Civil Measurement
Civil Measurement
Civil Measurement
[Modified CESMM)
This method of measurement has been developed from the Civil Engineering
Standard Method of Measurement 1983 edition. The modifications have been
made by Gauff Ingenieure to meet conditions and standard practices in
eastern Africa and to achieve a near uniqueness in the bill item numbers.
INDEX
Preamble to the Modified CESMM
(ii)
Class A
Class D
Class E
Earthworks ................................................................................................ 5
Class F
Class G
Class H
Precast Concrete..................................................................................... 13
Class I
Class J
Class K
Class L
Class M
Structural Metalwork............................................................................... 24
Class N
Class O
Timber ..................................................................................................... 27
Class R
Class U
Class V
Painting ................................................................................................... 31
Class W
Waterproofing ......................................................................................... 32
Class X
Miscellaneous Work................................................................................ 33
Class Y
In this document and in Bills of Quantities prepared according to the procedure set forth herein the
following words and expressions have the meanings hereby assigned to them, except where the context
otherwise requires
1.2
Words and expressions defined in the Conditions of Contract have the same meaning herein.
1.3
The word 'work' includes work to be carried out, goods, materials and services to be supplied, and the
liabilities, obligations and risks to be undertaken by the Contractor under the Contract.
1.4
The expression 'expressly required' means shown on the Drawings, described in the Specification or
ordered by the Engineer pursuant to the Contract.
1.5
'Daywork' means the method of valuing work on the basis of time spent by the workmen, the materials
used and the plant employed.
1.6
'Work Classification' means the Work Classification set out in Clause 8 hereof.
1.7
'Original Surface' means the surface of the ground before any work has been carried out.
1.8
'Final Surface' means the surface indicated on the Drawings to which excavation is to be carried out.
1.9
'Commencing Surface' means, in relation to an item in a Bill of Quantities, the surface of the ground
before any work covered by the item has been carried out. 'Commencing surface' means, in relation to
a group of items in a Bill of Quantities for work in different materials in the excavation or bored, drilled or
driven hole, the surface of the ground before any work covered by any item in the group has been
carried out.
1.10 'Excavated Surface' means, in relation to an item in a Bill of Quantities, the surface to which excavation
included in the work covered by the item is to be carried out. 'Excavated surface' means, in relation to a
group of items in a Bill of Quantities for excavation in different materials, the surface to which
excavation included in the work covered by any item in the group is to be carried out.
1.11 A hyphen between two dimensions means a range of dimensions which includes all dimensions
exceeding that preceding the hyphen but not exceeding that following the hyphen.
1.12 'Rock' shall be classified into categories i.e. class I and class II, which are based on the guidelines and
definitions set in the Specifications and in tables E1 & E2 in class E herein
CLAUSE 2. GENERAL PRINCIPLES
2.1
The title of this document is the Modified Civil Engineering Standard Method of Measurement. It is
intended to be used in conjunction with the Conditions of Contract and in connection with works of civil
engineering construction.
2.2
This document sets forth the procedure according to which the Bill of Quantities are to be prepared and
priced and the quantities of work expressed and measured.
2.3
2.4
Work has been itemised in the Bill of Quantities in different classes ("Work Classification") however in
pricing the Bills of Quantities Tenderers shall have due regard for all of their expected costs in fulfilling
their obligations under the Contract, and make due allowance for these costs within the available Bills of
Quantities items.
The Work Classification presented has divided types of work into 18 main classes. Each class
comprises up to a maximum of six divisions which classify work at successive levels of detail. Each
division comprises a list of up to nine descriptive features of work. Each item description in the Bill of
Quantities identifies the component of work covered with respect to one feature from each division of
the relevant class. e.g.
i
Class H (precast concrete) contains three divisions of classification. The first classifies different types of
precast units, the second classifies different units by their dimensions, and the third classifies them by
their mass. Each item description for precast concrete units therefore identifies the component of work in
terms of the type of unit, its dimensions and mass.
3.2
To avoid unnecessary length, item descriptions for Permanent Works generally identify the component
of the Works and not the tasks to be carried out by the Contract, e.g.
An item is described as 'Mild Steel bar reinforcement to Specification, nominal size 20 mm', not as
'Supply, delivery, cut, bend and fix mild steel bar reinforcement to Specification, nominal size 20 mm'.
3.3
Where the work identified by an item is specifically limited, the limitation is stated in the item
description, e.g.
'Mild steel bar reinforcement nominal size 20 mm excluding supply and delivery to the Site'.
Item descriptions for work which is divided between two classes has such limitations stated
Item descriptions for miscellaneous metalwork inserts which are to be cast in to concrete require
appropriate additional description if items are given in both class G for casting in the inserts and class N
for supplying the inserts.
3.4
In preparing the Bills of Quantities, an attempt has been made to have work divided into items in the
Bills of Quantities so that the component of work which is included in each item does not exhibit more
than one feature from each division of any one class of the Work Classification e.g.
One item for precast concrete work does not include more than one of the types of concrete unit listed in
the first division of Class H, neither does it include different units whose dimensions are not within one of
the classifications listed in the second division of class H, nor does it include different units whose mass
does not lie within one of the ranges listed in the third division class H.
3.5
Measurement rules in the Work Classification set out the conditions under which work shall be measured
and the method by which the quantities shall be computed, save as otherwise provided in the Contract.
3.6
Definition rules in the Work Classification define the extent and limits of the class of work represented by
a word or expression used in the Work Classification and in a Bill of Quantities prepared in accordance
with this document.
3.7
Coverage rules in the Work Classification provide that the work stated is deemed to be included in the
Contract. A coverage rule is not however exhaustive or limiting, does not state all the work covered by
an item and does not preclude any of the work stated being covered by a Method-Related Charge.
3.8
Where an Item as indicated herein includes the word stated, or to Specification or on Drawings, or
reference in the accompanying Notes indicates that additional information is to be supplied in the Bill of
Quantities, Specifications or Drawings, but Bidders find no such information has been provided, this
should be queried during the bidding process within the time period stipulated in the Bid documents.
Any bidder who is uncertain in any respect whatsoever as to the intent and comprehensiveness of any
Item shall query the same during the bidding process so as to receive the necessary clarification.
Failure to do so will preclude the right to subsequently submit any contractual claim due to a lack of
understanding or uncertainty of what was required by or included in the Item concerned.
For convenience of reference each item in the Work Classification has been assigned a bill number, a
code number consisting of a letter and a maximum of six digits. The initial number designates the Bill
Number, the next capital letter corresponds to the class in the Work Classification in which the item
occurs and the digits give the position of the item in the respective divisions of the class. In the case of
Class I, supply of pipes, sewers and fittings a final lower case letter defines the nominal diameter.
Code 4I 1 6 2.4 m identifies an item as
Bill Number
Class
First division
1
pipes & sewers
Second division
6
uPVC
Third division
2
S & S standard joints
(if there are more than three divisions a decimal point separates division three from division four)
ii
Fourth division
Fifth division
Sixth division
4
m
(1-9)
N.P. 9/10
dia. 200 mm.
if required to differentiate between items
4.2
Code numbers may be used to number the items in the Bill of Quantities.
4.3
Where a feature of an item is not listed in the Work Classification and the digit 9 has not been
categorised it may have been used in the appropriate positions in the code number.
Appropriate provisions of this Clause shall also apply to the measurement of completed work.
5.2
Daywork Schedule
5.3
The Daywork Schedule comprises a list of various classes of Labour, Material and Plant for which the
Tenderer is to insert his Daywork rates (inclusive of overheads and profit) for the separate items. These
are then be cumulated and carried forward to the respective Preliminary and General (Bill 1) items, as
Provisional Sums.
5.4
Daywork rates for staff shall include transport to the sites of work about the site, overtime unless work is
specifically instructed to be executed outside normal working hours, superintendence, allowances,
insurances, tools of the trade, protective clothing, and consumables normally occasioned in pursuit of
their trade. The rates are to be priced on the basis of the staff being on the site or engaged from the
vicinity of the site at the time works are ordered to be executed on Dayworks rates. Payment shall be on
the basis of the times actually worked, excluding any meal or recess times.
5.5
Daywork rates for materials shall include procurement, transport to site, loading, offloading, handling,
storage, transport to the place of usage and minor materials normally associated with usage of the
material such as nails for timber and binding wire for reinforcement.
5.6
Daywork rates for plant shall include fuel, oils, lubricants, maintenance, insurance, and the cost of any
operators, drivers, loaders and the like. Payment shall be for any reasonable time spent in actual travel
to the site (not exceeding that from the capital city) and for the time of actual active usage in executing
work. The costs of any loader to transport the plant shall not be paid for separately.
5.7
Each part of the Bill of Quantities has been given a heading and groups of items within each part has
been given sub-headings. Headings and sub-headings should be read as part of the item description to
which they apply. A line has been drawn across the item description column below the last item to which
each heading or subheading applies.
5.8
Generally, all work has been itemised and the items described in accordance with the Work
Classification, but there are deviations from this where the nature, location, importance or any other
special characteristic of the work is thought likely to give rise to special methods of construction or
consideration of cost.
iii
5.9
Descriptions in the Bills of Quantities items identify the work covered by the respective items, but the
exact nature and extent of the work is to be ascertained from the Drawings, Specification and Conditions
of Contract, as the case may be, read in conjunction with the Work Classification.
5.10 Any detail or description required to be given with the Work Classification may have been omitted from
an item description provided that a reference is given in its place which identifies where the omitted
information may be found on a drawing or in the Specification.
5.11 Where an item description compiled in accordance with the Work Classification is considered insufficient
to identify clearly the particular work covered by the item additional description may have been given to
identify the work by reference to its location or other physical features shown on the Drawings or
described in the Specification.
5.12 Where all the components of work included in an item are of one dimension within a range given in the
Work Specifications that dimension may be stated in the item description in place of the range of
dimensions.
5.13 Each Prime Cost Item is followed by an item for a percentage adjustment in respect of the Contractors
costs in connection therewith which, in the absence of any express provision in the Contract to the
contrary, shall include:
(a) in any case in which a nominated Sub-Contractor is to carry out work on the Site, for allowing him
to use temporary roads, scaffolding, hoists, mess-rooms, sanitary accommodation and welfare
facilities which are provided by the Contractor for his own use and for providing space for office
accommodation and storage of plant and materials, for disposing of rubbish and for providing light
and water for the work of the Nominated Sub-Contractor, for the Contractor supervising, coordinating the Nominated Sub-Contractor's work, and for the Contractor assuming risk and
responsibility in connection with such work; and
(b) in any case in which the work is not to be carried out by a nominated Sub-contractor, for making
procurement, unloading, storing and hoisting materials supplied by him and disposing of packaging
materials.
5.14 Where any goods, materials or services are to be supplied by a Nominated Sub-Contractor, reference
has been made in the description, or in the appropriate heading or sub-heading, of the Prime Cost Item
under which the goods, materials or service are to be supplied.
5.15 A Provisional Sum for a general contingency allowance, is given in the Grand Summary to the Bills of
Quantities for each Lot. This sum is only to be expended on the Engineer's instructions.
5.16 Quantities shall be computed net, unless directed otherwise by a measurement rule in this document or
by the Contract, and no allowance shall be made for bulking, shrinkage or waste.
5.17 The following units of measurement and abbreviation have been used.
Unit
millimetre
metre
square millimetre
square metre
hectare
cubic metre
kilogramme
tonne
sum
number
hour
week
month
dims.
n.b.
exc.
n.e.
Abbreviation
mm
m
2
mm
2
m
ha
3
m
kg
t
Sum
nr
h
wk
mth
dimensions
nominal bore
exceeding
not exceeding
iv
5.18 The Commencing Surface has been identified in the description of each item for work involving
excavation, boring or driving work which the commencing surface is not the Original Surface. The
Excavated Surface has been identified in the description of each item for work involving excavation for
which the excavated surface is not the Final Surface. The depths of excavation stated in accordance
with the Work Classification are to be measured from the Commencing Surface to the Excavated
Surface.
5.19 The Grand Summary for each Lot contains a tabulation of the parts of the Bill of Quantities for that Lot,
with provision for insertion of the total of the amounts brought forward from the individual Bill
Summaries.
CLAUSE 6. COMPLETION, PRICING AND USE OF THE BILL OF QUANTITIES
6.1
Rates and prices shall be inserted in the rate columns of the Bill of Quantities in the currency indicated.
Where appropriate, a unit rate shall be inserted for each item, and the unit rate extended against the
quantity to give the line totals. The line totals are to be summated on each page to give the page totals.
Summary pages are provided at the end of each Bill, into which the Tenderer shall carry the individual
page totals, and summate them to obtain the Bill totals. Bill totals shall be carried to the Grand
Summary of the respective Lot.
It has been found necessary to draw the attention to certain aspects of pricing and in particular to the
separation of supply of cement from the supply and placing of concrete and of the separation of the
supply of pipes and fittings from their laying. To ensure that this is understood and complied with, a
page for acknowledgement to this effect is incorporated within the Bills of Quantities.
For the supply of pipes and fittings, the rates to be inserted for each supply item shall be the Works-site
CIF price obtained from the pipe manufacturer or supplier without inclusion of any mark-up. A separate
item is then provided within each relevant Bill for the tenderer to insert the percentage mark-up he
wishes to be applied to all such items in that particular Bill. This need not be the same percentage
adjustment as used for Prime Cost sums in general which has to be indicated in the Appendix to Tender.
For the purpose of this Clause the following words and expressions shall have the meanings hereby
assigned to them.
(a) 'Method-Related Charge' means the sum for an item inserted in the Bill of Quantities by a Tenderer
in accordance with Sub-clause 7.2.
(b) 'Time-Related Charge' means a Method-Related Charge for work the cost of which is to be
considered as proportional to the length of time taken to execute the work.
(c) 'Fixed Charge' means a Method-Related Charge which is not a Time-Related charge.
7.2
A Tenderer may insert in the Bill of Quantities such items for Method-Related Charges as he may decide
to cover items of work relating to his intended method of executing the Works, the costs of which are not
to be considered as proportional to the quantities of the other items and for which he has not allowed in
the rates and prices for the other items.
7.3
Where possible the itemisation of Method-Related Charges should follow the order of classification and
the other requirements set out in class A of the Work Classification, distinguishing between TimeRelated Charges and Fixed Charges. Method-Related Charges may be inserted to cover items of work
other than those set out in class A.
7.4
Each item for a Method-Related Charge inserted in the Bill of Quantities shall be fully described so as to
define precisely the extent of the work covered and to identify the resources to be used and the
particular items of Permanent Works or Temporary Works, if any, to which the item relates.
7.5
The insertion by the Contractor of any item for a Method-Related Charge in the Bill of Quantities when
tendering shall not bind him to adopt the method stated in the item description in executing the Works.
7.6
7.7
In the event of the satisfactory execution of any part of the Works which has been the subject of an item
for a Method-Related Charge using, whether in whole in part, a method other than that described in the
item, the Contractor shall nevertheless be entitled to payment of the Method-Related Charge, or the
balance thereof, as the case may be, by such instalments at such times and upon such events as may
from time to time be agreed between the Engineer and the Contractor.
v
The amount of a Method-Related Charge shall be neither increased nor decreased by reason only of any
change in method made by the Contractor of Conditions of Contract, unless such change has been
ordered by the Engineer, in which case the provisions of Clause 5.2 shall apply.
CLAUSE 8. WORK CLASSIFICATION
Class A:
Class B:
Class C:
Class D:
Class E:
Class F:
Class G:
Class H:
Class I:
Class J:
Class K:
Class L:
Class M:
Class N:
Class O:
Class P:
Class Q:
Class R:
Class S:
Class T:
Class U:
Class V:
Class W:
Class X:
Class Y:
General Items
Ground Investigation (not included)
Geotechnical and other specialist processes (not included)
Demolition and site clearance
Earthworks
In-situ concrete
Concrete ancillaries
Precast concrete
Pipework pipes, sewers and fittings supply only
Pipework pipes, sewers and fittings install only
Pipework-manholes, sewers and pipework ancillaries
Pipework-supports and protection, ancillaries to laying and excavation.
Structural Metalwork
Miscellaneous metalwork
Timber
Piles (not used)
Piling ancillaries (not included)
Roads and pavings
Rail Track (not included)
Tunnels (not used)
Brickwork, blockwork and masonry
Painting
Waterproofing
Miscellaneous work
Sewer Renovation and Ancillary Works
vi
Page 1 of 37
Preliminary (contractual)
requirements
sum
SECOND DIVISION
THIRD DIVISION
1
2
3
4
1
2
FOURTH DIVISION
------------------------------------------2
1 Floor area n.e. 50 m2
2 Floor area 50 - 150 m 2
3 Floor area exc. 150 m
(stated)
sum
Contd
Contd
-------------------------------------------
------------------------------------------1 Provide
wk
2 Percentage on
%
3 Maintain
wk
4 Develop and print
wk
------------------------------------------1 Provide
wk
2 Percentage on
%
3 Maintain
wk
------------------------------------------1 Clay
2 Fine sand
3 Coarse sand
4 Aggregate
5 Stone fill
6 Rubble
7 Other (stated)
------------------------------------------1 Cement
2 Concrete cubes, (stated)
3 Steel reinforcement
4 Structural steel
5 Sheet steel
6 uPVC
7 PE
8 Fibre reinforced cement
9 Other (stated)
-------------------------------------------
FIRST DIVISION
SECOND DIVISION
Testing of materials
(cont'd)
General (specified)
requirements (cont'd)
THIRD DIVISION
FOURTH DIVISION
------------------------------------------2 Services
------------------------------------------3 Plant
------------------------------------------4 Plant
Contd
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
FIRST DIVISION
Method related charges
(cont'd)
SECOND DIVISION
FOURTH DIVISION
Temporary works
1
2
THIRD DIVISION
------------------------------------------1 Daywork
------------------------------------------2
Other Provisional
Sums (stated)
sum
------------------------------------------1 Including work on Site by a
nominated subcontractor
sum
2 Percentage adjustment to
work on site by a nominated
sub-contractor
%
3 Not including work on Site
by a nominated subcontractor
sum
4 Percentage adjustment to
prime cost sum not including work on site by a nominated sub-contractor
%
5 Supply only, item (stated)
6 Percentage adjustment to
supplied item
7 Percentage adjustment to
P.C. sum items (stated)
%
Access scaffolding
Support scaffolding &
propping
3 Piling
4 Formwork
5 Shafts & pits
6 Hardstandings
------------------------------------------1 Supervision
2 Administration
3 Labour teams
------------------------------------------1 Labour
sum
2 Percentage adjustment to
provisional sum for daywork labour
%
3 Materials
sum
4 Percentage adjustment to
provisional sum for
daywork materials
%
5 Plant
sum
6 Percentage adjustment to
provisional sum for
daywork plant
%
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
-------------------------------------------
NOTES:
1. The unit of measurement for
general items shall be the sum,
except where another unit of
measurement is indicated (see
note 5).
Page 4 of 37
General Clearance
ha
SECOND DIVISION
THIRD DIVISION
1 Urban land
2 Agricultural land
3 Woodland
4 Rough grassland
5 Open bush and thicket
6 Dense bush and thicket
7 Forest
8 Seasonal swamp
----------------------------------------------------1 Trees of girth:
500 mm. - 1 m
2 Trees of girth:
1-2m
3 Trees of girth:
2-3m
4 Trees of girth:
3-5m
5 Trees of girth: exc. 5 m., (stated)
6 Stumps of diameter: 150-500 mm
7 Stumps of diameter:
500- 1 m
8 Stumps of diameter:
exc. 1 m.,
(stated)
----------------------------------------------------1 Brickwork construction
2 Concrete construction
3 Masonry construction
4 Metal construction
5 Timber construction
6 No predominant material
7 Blockwork construction
8 Mud and pole construction
----------------------------------------------------1 Nominal bore
not exc. 100 mm
2 Nominal bore:
100 - 300 mm
3 Nominal bore:
300 - 500 mm
4 Nominal bore:
exc. 500 mm
----------------------------------------------------1 General site clearance
2 Along pipeline routes
2
3
4
----------------------------------------------------1 Volume:
not exc. 50 m3
2 Volume:
50 - 100 m3
3 Volume:
100 - 250 m3
4 Volume:
250 - 500 m3
5 Volume:
500 - 1000 m3
6 Volume:
1000 - 2500 m3
7 Volume:
2500 - 5000 m3
8 Volume:
exc. 5000 m3, (stated)
----------------------------------------------------1 Pipeline only
2 Pipeline and access track
NOTES:
1. General clearance shall include the
demolition and removal of all articles,
objects and obstructions which are
expressly required to be cleared, except
those for which separate items are given
as set out in this class.
2. Item
descriptions
for
general
clearance shall identify the area included
unless it is the total area of the Site.
3. Item descriptions for work from which
the materials arising remain the property
of the Employer shall so state.
4. Girths of trees shall be measured
one metre above ground level. Separate
items are not required for removal of
stumps of trees which are themselves to
be removed.
Page 5 of 37
CLASS E: EARTHWORKS
Includes: Excavation, dredging, filling, compaction, landscaping
Excludes: Excavation for: site investigation (inc. in class B): diaphragm walls (inc. in
class C): pipes, and sewers, manholes, trenches and ditches,(inc. in classes J,K,L): piles
(inc. in classes P and Q): tunnels, shafts, headings, and other subterranean cavities (inc.
in class T): foundations of fences and gates (inc. in class X)
1
2
3
4
THIRD DIVISION
FOURTH DIVISION
--------------------------------------1 topsoil
2 class I material
3 class II material
4 selected class III material
5 unselected class III
material
6 artificial material
------------------------------------------1 in topsoil
2 in class I material
3 in class II material
4 in class III material
5 in artificial hard material
6 in other artificial material
---------------------------------------
-------------------------------------------
---------------------------------------
---------------------------------------
-------------------------------------------
---------------------------------------
SECOND DIVISION
FIRST DIVISION
Excavation by dredging
Excavation for cuttings
Excavation for
foundations
General Excavation
3
m
3
m
3
m
3
m
-----------------------------------------8 Landscaping
Contd
Topsoil
----------------------------------------
FIRST DIVISION
Landscaping (cont'd)
SECOND DIVISION
THIRD DIVISION
NOTES
1. The location and limits of dredging
shall be stated in item descriptions
where its extent would otherwise be
uncertain. Such excavation classes in
the Bill of Quantities shall be measured
as dredging, irrespective of the method
of excavation adopted by the Contractor.
2. Excavation below embankments
shall be classed as excavation of
cuttings.
3. The location and limits of excavation
of foundations shall be stated in item
descriptions where the limits would
otherwise be uncertain.
Excavation
around pile shafts shall be so described
and
classed
as
excavation of
foundations.
4. Excavation from borrow pits on the
Site shall be classed as general
excavation and shall be measured only
to the extent that it is expressly required.
5. Excavated material shall be deemed
to be for re-use unless it is stated in item
descriptions to be for disposal. Disposal
shall mean disposal by the Contractor
off the Site unless otherwise stated in
item descriptions. Where material is for
disposal on the Site the location of the
disposal areas shall be stated in item
descriptions.
6. Material to be excavated shall be
deemed to be natural material other than
rock or topsoil, unless otherwise stated
in item descriptions. The nature of
artificial hard material to be excavated
shall be stated in item descriptions.
7. An item shall be given for each
separate stage of excavation where
separate stages in the conduct of the
work are expressly required.
8. The
volume
measured
for
excavation of a structure or foundation
shall be the volume which is to be either
occupied by or vertically above any part
of the structure or foundation. Additional
excavation necessary to provide working
space shall not be measured.
9. Separate items are not required for
disposal of excavated material upholding
the sides of excavations or keeping
excavations free of water.
10. Disposal of surplus excavated
material arising from piling operation
shall be classified as piling ancillaries
(class Q).
Class II:
"Compact gravel" or "Altered rock" detailed description of which is also outlined in specification
clause 206.
Class III:
"Normal" or "Soft material" detailed classification of which is given in Table 2 (page 6B). Description
of class III material characteristics is given fully in specification clause 206.
Assistance in identification for the three classes of material is given in Table E1 (below).
Table E2 on the following page gives a more detailed-classification for soil (Class III material).
Class III
Class II
Class I
Typical Material
Altered Rocks
Agglomerate and
Tuff
Hammer Blow
Drumming Noise or
crushed pieces
Dents
Sample
Pliers Crushing
Not possible or
Grani Fracture
Fractures or
Crushed small pieces
50 mm dia. Core
in Hand
Soaked in Water
for one Hour
No change
Disintegrates in the
hand after soaking
Expected
Crushing
Strength
Above 40 N/mm
Particle size
(mm)
Very
coarse
soil
BOULDERS
Visual Identification
Nature and
Plasticity
200
COBBLES
Term
Particle shape:
% of clay or silt
Angular
Subangular
coarse
slightly clayey
GRAVEL
Subrounded
Rounded
or
slightly silty
under 5%
SAND
Flat
Elongate
- clayey
Coarse Soils
Over 65% sand and gravel sizes
GRAVELS
medium
GRAVEL
or
- silty
SAND
very clayey
GRAVEL
5 to 15%
under represented)
or
Texture:
15 to 35%
very silty
SAND
Sandy GRAVEL
Gravelly SAND
2
coarse
Rough
Smooth
0.6
Polished
medium
fine
coarse
Fine Soils
Over 35% sand and clay sizes.
0.02
under represented)
Only coarse silt barely visible to naked eye;
Non plastic
or low
plasticity
Term
% of sand
medium
or gravel
sandy
CLAY
gravelly
SILT
fine
or
0.002
Dry lumps can be broken but not powdered
plasticity
(Lean clay)
- CLAY SILT
under 35%
ORGANIC
CLAY-SILT or Varies
SAND
vegetable matter.
Predominantly plant remains usually dark
PEATS
35 to 65%
Intermediate
Organic Soils
Varies
Page 9 of 37
SECOND DIVISION
THIRD DIVISION
1
2
3
1
2
3
in 50 kg. bags
in 200 kg. drums
in bulk by lorry
------------------------------------------------------1 aggregate
size 10 mm
2 aggregate
size 14 mm
3 aggregate
size 20 mm
4 aggregate
size 40 mm
5 aggregate
size (stated)
6 All-in aggregate, size range (stated)
------------------------------------------------------1 As blinding
2 In bases, footings, and ground slabs
3 In suspended slabs
4 In walls
------------------------------------------------------1 thickness:
not exc. 50 mm
2 thickness:
50 - 100 mm
3 thickness:
100 - 150 mm
4 thickness:
150 - 300 mm
5 thickness:
300 - 500 mm
6 thickness:
exc. 500 mm (stated)
------------------------------------------------------1 X- sectional area:
n.e. 0.03 m2
2 X- sectional area:
0.03 - 0.10 m2
3 X- sectional area:
0.10 - 0.25 m2
4 X- sectional area:
0.25 - 1 m2
5 X- sectional area: exc. 1 m2, (stated)
6 Special beam section:
m, (stated)
NOTES:
1. Items for provision of concrete shall be classified and
described in accordance with BS 8110:1997, Structural use of
concrete. Code of practice for design and construction'. The mix
specification and type of cement used shall be as stated in item
description for provision of concrete in accordance with BS
8110:1997. Concrete mixes shall be classed as designed mixes
for ordinary structural concrete where the mix proportions are
stated in the Contract and as special mixes for special structural
concrete where the mix proportions are to be selected by the
Contractor.
2. Pre-stressed concrete which is also reinforced shall be
classed as pre-stressed concrete.
3. The thickness used for classification of blinding shall be the
minimum thickness.
4. Columns and piers integral with a wall shall be measured as
part of the wall.
5. The cross-sectional dimensions of special beam sections
shall be stated in the item descriptions, except where a beam type
or mark number is stated for which dimensions are given on the
Drawings.
Details of the various classes of concrete are given in the following table:
MAXIMUM
AGGREGATE
SIZE
mm
MINIMUM FREE
WATER
CEMENT RATIO
MAXIMUM
CEMENT
CONTENT
3
kg/m
MINIMUM
CEMENT
CONTENT
kg/m3
C25/10/A
25
10
0.55
360
400
C25/20/A
25
20
0.55
360
400
C25/20/B
25
20
0.55
290
400
C25/20/C
25
20
240
540
C20/20/B
20
20
0.55
290
400
C20/40/B
20
40
0.55
260
400
C20/40/C
20
40
220
540
C15/40/B
15
40
180
540
C15/20/C
15
20
180
540
C10/40/C
10
40
150
540
CLASS
B-
C.
Page 11 of 37
SECOND DIVISION
THIRD DIVISION
1
2
3
4
1 Plane horizontal
2 Plane sloping
3 Plain battered
4 Plane vertical
5 Curved to one radius in one plane
------------------------------------------------------6 Other, curved to radius in m.
2
(stated)
m
------------------------------------------------------7 For voids
nr
1 Width:
not exc. 0.1 m
m
2 Width:
0.1 - 0.2 m
m
2
3 Width:
0.2 - 0.4 m
m
2
4 Width:
0.4 - 1.22 m
m
2
5 Width:
exc. 1.22 m (stated)
m
-------------------------------------------------------
Formwork:
Formwork:
Formwork:
Formwork:
rough finish
fair finish
other finish (stated)
surface features (stated)
Reinforcement
------------------------------------------------------2
1 Open surface plain joint
m
2
2 Open surface joint with filler
m
2
3 Formed plain surface joint
m
2
4 Formed surface joint with filler
m
------------------------------------------------------5 Plastic or rubber waterstop
m
6 Metal waterstop
m
Joints (stated)
Post-tensioned pre-stressing
Contd
nr
-------------------------------------------------------2
1 Nominal mass: not exc. 2 kg/m2
2 Nominal mass:
2 - 3 kg/m2
3 Nominal mass:
3 - 4 kg/m2
4 Nominal mass:
4 - 5 kg/m2
5 Nominal mass:
5 - 6 kg/m2
6 Nominal mass:
6 - 7 kg/m2
7 Nominal mass:
7 - 8 kg/m
2
8 Nominal mass:
exc. 8 kg/m (stated)
-------------------------------------------------------1 Width or depth:
not exc. 0.5 m
2 Width or depth:
0.5 - 1 m
3 Width or depth: exc. 1 m (stated)
-------------------------------------------------------1 Width:
not exc. 150 mm
2 Width:
150 - 200 mm
3 Width:
200 - 300 mm
4 Width:
exc.300 mm (stated)
--------------------------------------------------------
THIRD DIVISION
FIRST DIVISION
SECOND DIVISION
------------------------------------------------------2
2 Finishing of formed surfaces
m
------------------------------------------------------3 Inserts
nr
NOTES
1. Formwork shall be measured for all final
surfaces of in-situ concrete which require
temporary support during casting except
where otherwise stated.
2. Formwork shall be measured for the side
surfaces of in-situ concrete cast within
excavated volumes except where the
concrete is expressly required to be cast
against an excavated surface. Such side
surfaces shall back sloping surfaces inclined
at an angle not exceeding 45o to the vertical.
Upper surfaces of concrete inclined at angle
exceeding 15o to the horizontal shall be
deemed to require temporary support during
casting.
Item descriptions for formwork
which is to upper surfaces shall so state,
except where the surfaces are inclined at an
angle not exceeding 10o to the vertical.
3. Formwork for temporary concrete
surfaces shall be measured at locations
where temporary surfaces are expressly
required but not where temporary surfaces
are formed at the discretion of the
Contractor. Formwork for blinding concrete
shall not be measured.
4. Plane formwork shall be classified
according to its angle of inclination as
follows.
Class
Horizontal
Sloping
Battered
Vertical
Angle of inclination to
the vertical
85 - 90o
10 - 85o
0 - 10o
0o
0.35 - 0.7 m
Other voids
(area)
0.1 - 0.5 m2
Not exceeding
0.1 m2
Page 13 of 37
Beams
Pre-stressed pretensioned beams
Pre-stressed posttensioned beams
Columns
nr
nr
nr
nr
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
9
In concrete
grade 10
In concrete
grade 15
In concrete
grade 20
In concrete
grade 25
In concrete
grade 30
In concrete
grade 40
In concrete
grade 50
In concrete
grade 60
In concrete grade
(stated)
Length:
not exc. 5 m
Length:
5- 7m
Length:
7 - 10 m
Length:
10 - 15 m
Length:
15 - 20 m
Length:
20 - 30 m
Length:
exc. 30 m
(stated)
------------------------------------------1 Area:
not exc. 0.1 m2
2 Area:
0.1 - 0.5 m2
3 Area:
0.5 - 1.0 m2
4 Area:
1.0 - 5.0 m2
5 Area:
5.0 - 15 m2
6 Area:
exc. 15 m2
(stated)
Mass:
not exc.100 kg
Mass:
100 - 250 kg
Mass:
250 - 500 kg
Mass:
500 - 750 kg
Mass:
750 - 1 t
Mass:
1- 2 t
Mass:
2- 5 t
Mass:
5 - 10 t
Mass: exc. 10 t., (stated)
NOTES
1. The position of the Works
for each type of precast unit shall
be stated in item descriptions.
Unless otherwise stated, precast
units shall be deemed to be
reinforced but not pre-stressed.
Particulars of the pre-stressing
shall
be stated
in
item
descriptions for pre-stressed
units.
5. Units
with
different
dimensions shall be given
different mark or type numbers.
6. The
mass
used
for
classification in the fourth
division shall be the mass of
each unit. The length measured
for box units, copings, sills, and
weir blocks shall be the length of
identical units.
7. Where weir blocks are laid to
precise levels, item descriptions
shall so state.
Page 14 of 37
SECOND DIVISION
THIRD DIVISION
1
2
3
4
1
2
6
7
8
9
Material (stated)
Clay
Concrete (stated)
Ductile iron (coating/lining
stated)
Welded steel (coating/lining
stated)
uPVC
Asbestos cement (sewers
only)
G.S. or G.I.
Polyethylene PE100
Contd
-------------------------------------------
6TH sequence no
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
Adaptors, detachable
collars, couplings and
saddles
------------------------------------------7 Hydrants
------------------------------------------9 Meters
6TH sequence no
NOTES
1. Items shall be deemed to include the supply of both pipes and
fittings complete with all jointing materials, coatings and linings and
other related materials called for on the drawings or in the
specification unless such material is specifically excluded in the
item description
2. The nominal bores, and in the case of uPVC and PE pipes the
nominal external diameters are given in the table below for the
various types of pipe wall material.
TABLE I1: STANDARD PIPE, SEWER AND FITTINGS DIAMETERS in mm. (Fifth Division)
Ref.
Letter
Pipe material
stated.
Clay
Concrete
Ductile
Iron
Welded
Steel
(sewers only)
a
b
c
d
e
f
g
h
i
j
k
l
m
n
o
p
q
r
s
t
u
v
w
x
y
z
G.S. or
G.I.
(see note)
PE
75
150
40
80
20
50
10
15
100
225
50
100
25
60
15
20
150
300
(60)
150
32
25
225
375
65
200
40
32
300
450
80
250
50
125
20
32
40
375
525
100
300
63
150
25
40
50
450
600
125
350
75
175
32
50
65
75 (80)
100
10
20
15
25
65
525
675
150
400
90
200
40
80
600
750
200
(450)
110
250
50
80
100
675
825
250
500
125
300
65
100
125
750
900
300
(550)
140
350
(80)
125
150
825
975
350
600
160
400
(100)
150
200
900
1050
400
(650)
200
450
(125)
200
250
1125
(450)
700
225
500
(150)
250
300
1200
500
(750)
250
600
350
1350
600
800
280
700
400
1500
700
(850)
315
800
450
1650
800
900
355
900
500
1800
900
1000
400
1000
600
1950
1000
1200
450
1200
700
2100
1200
1600
500
1400
800
2250
1600
1800
560
1500
900
2400
1800
2000
630
1600
1000
2550
2000
1200
2700
Notes:
Asbestos
Cement
(sewers only)
10
1400
(NOD)
uPVC
(NOD)
(see note)
1800
2000
300
Page 17 of 37
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
1
2
1
2
2
3
6
7
8
9
----------------------------2 Testing
m
----------------------------3 Sterilisation
and flushing
m
----------------------------------2 Fittings
-----------------------------
-----------------------------------
FIFTH DIVISION
Not in trenches
In trenches, depth:
n.e. 1 m
3 In trenches, depth:
1 - 1.5 m
4 In trenches, depth:
1.5 - 2 m
5 In trenches, depth:
2-3 m
6 In trenches, depth:
3-4 m
7 In trenches, depth:
4- 6 m
8 In trenches, depth:
exc. 6 m (stated)
9 On piers, number and
height, (stated)
-----------------------------------
-----------------------------------
-----------------------------------
-----------------------------------
------------------------------------
FIRST DIVISION
6
7
Method of Measurement
type B, trench
excavation
Method of Measurement
type C, trench
excavation
3
m
SECOND DIVISION
THIRD DIVISION
1
2
1
2
3
4
5
6
7
3
3
m
Max. depth
Max. depth
Max. depth
Max. depth
Max. depth
Max. depth
Max. depth
(stated)
FOURTH DIVISION
n.e. 1 m
1 - 1.5 m
1.5 - 2 m
2 -3m
3 -4m
4 -6m
exc. 6 m
NOTES
1. Three methods of measurement are specified herein.
Methods of Measurement A and
B are used for new works that do
not directly involve any tie-in
works
although
they
may
subsequently
require
this.
Method of Measurement C is
specifically reserved for tie-in
work that can only be executed by
shutting down a live system.
2. Unless otherwise indicated in
the item description contained in
the Bill of Quantities, pipes shall
be measured in accordance with
Method A. If used, Method B will
generally be limited to intake
sites, treatment works, and
reservoir sites, where there are a
disproportionate
number
of
fittings involved.
3. Method A for the measurement of pipes and fittings.
a) The unit of measurement
shall be in metres.
b) Lengths of pipelines shall be
measured along their centreline and shall include
lengths occupied by fittings
and valves. Where pipes are
built into manholes and other
chambers, the lengths shall
be measured from the inside
surfaces of the chambers.
c) Depths shall be measured
from
the
Commencing
Surface to the invert of the
pipe.
ii)
iii)
iv)
v)
vi)
Backfilling of trenches
unless trenches are expressly required to be
backfilled with material
other than that excavated
from the trenches
Provision, cutting, laying, and jointing of pipes
and fittings.
Temporary supports
which are not expressly
required to be left in the
excavation
Keeping trenches clear
of water
Trimming of trench
bottoms
Any additional protection
at the time of laying if
called for on the
drawings or in the
specification.
ii)
iii)
iv)
v)
vi)
Backfilling of trenches
unless trenches are expressly required to be
backfilled with material
other than that excavated
from the trenches
Provision, cutting, laying, and jointing of pipes
and fittings, whether old
or new.
Temporary supports
which are not expressly
required to be left in the
excavation
Keeping trenches clear
of water
Trimming of trench
bottoms
Any additional protection
at the time of laying if this
is called for on the
drawings or in the
specification.
Page 19 of 37
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
FIFTH DIVISION
1
2
3
4
1
2
1
2
3
4
5
6
7
Brick
Brick with backdrop
In-situ concrete
In-situ concrete
with backdrop
Precast concrete,
shape in plan stated
Precast concrete
with backdrop
Masonry or
blockwork
Masonry or blockwork with backdrop
Other (stated)
---------------------------------3 Gullies
nr
---------------------------------1 Clay
2 Clay trapped
3 In-situ concrete
4 In-situ concrete
trapped
5 Precast concrete
6 Precast concrete
trapped
7 Plastics
8 Plastics trapped
---------------------------------1 Filling of french &
rubble drains with
3
graded material
m
2 Filling of french &
rubble drains with
3
rubble
m
---------------------------------3 Trenches for unpiped
rubble drains
m
4 Unlined rectangular
section ditches
m
5 Lined rectangular
section ditches
m
6 Unlined vee section
ditches
m
7 Lined vee section
ditches
m
8 Trenches for pipes or
cables to be laid
by others
m
---------------------------------1 Cable ducts: 1 way
2 Cable ducts: 2 way
3 Cable ducts: 3 way
4 Cable ducts:
exc. 3 way (stated)
5 Sectional corrugated
metal culverts n.i.d.
n.e. 0.5 m
6 Sectional corrugated
metal culverts n.i.d.
0.5 - 1 m
7 Sectional corrugated
metal culverts n.i.d.
1 - 1.5 m
8 Sectional corrugated
metal culverts n.i.d.
exc. 1.5 m (stated)
----------------------------------
----------------------------------
4
5
6
7
8
9
---------------------------------2
1 Area:
n. e. 0.5 m2
2 Area:
0.5 - 1 m2
3 Area:
1 - 2 m2
4 Area:
2 - 3 m2
5 Area:
3 - 4 m2
6 Area:
4 - 5 m2
7 Area:
exc. 5 m
(stated)
----------------------------------
Nom. bore
n.e. 100
mm
2 Nom. bore
exc 100
but n.e. 200 mm
3 Nom. bore
exc. 200
but n.e. 300 mm
4 Nom. bore
exc.300
but n.e. 400 mm
5 Nom. bore
exc.400
but n.e. 500 mm
6 Nom. bore
exc. 500
but n.e. 600 mm
7 Nom. bore
exc.600
but n.e. 900 mm
8 Nom. bore
exc 900
but n.e. 1200 mm
9 Nom. bore
exc.
1200 mm (stated)
--------------------------------
Depth:
Depth:
Depth:
Depth:
Depth:
Depth:
Depth:
(stated)
n.e. 1.5 m
1.5 - 2 m
2-3m
3-4m
4-5m
5-6m
exc. 6m
----------------------------------
----------------------------------
----------------------------------
----------------------------------
----------------------------------
----------------------------------
----------------------------------
----------------------------------
FIRST DIVISION
6
Crossings
nr
-----------------------------------------m
7 Reinstatement
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
1
2
3
4
5
6
1
2
3
------------------------------------------
------------------------------------------
-----------------------------------------1 Area:
not exc. 0.1 m2
2 Area:
0.1 - 0.5 m2
3 Area:
0.5 - 1 m2
4 Area:
1 - 5 m2
5 Area:
5 - 15 m2
6 Area: exc. 15 m2 (stated)
NOTES
1. Type or mark numbers shall be stated
in item descriptions for manholes and
other chambers of which details are given
elsewhere in the Contract.
Item
descriptions
shall
identify different
configurations of manholes and other
chambers.
Separate items are not
required for different arrangements of
inlets and outlets or for access shafts of
different heights.
1
2
11
14
13
12
10
'x'
OD
'x'
trench width
B
3
4
5
6
7
8
9
10
11
12
13
14
a
b
c
Surface
Bottom of road or railway
construction (if any)
Trench walls
Top soil
Main backfill
Initial backfill
Sidefill
Upper bedding
Lower bedding
Trench bottom
Depth of cover
Depth of bedding
Depth of embedment
Trench depth
Depth of lower bedding
Depth of upper bedding
Depth of initial backfill
Page 22 of 37
SECOND DIVISION
THIRD DIVISION
1
2
3
4
5
6
7
In pipe trenches
In manholes and chambers
In headings
In thrust borings
In pipe jackings
In foundations
Other (stated)
3
4
----------------------------------------3 Bedding
m
4 Haunches
m
5 Side fill
m
6 Embedment
m
----------------------------------------6 Wrapping & lagging of m
----------------------------------------7 Concrete stools and thrust
blocks, concrete class
(stated)
nr
FOURTH DIVISION
----------------------------------------1 Height:
n.e. 1 m.
2 Height:
1 - 1.5 m.
3 Height:
1.5 - 2 m.
4 Height:
2 - 3 m.
5 Height:
3 - 4 m.
6 Height:
4 - 5 m.
7 Height:
5 - 6 m.
8 Height: exc. 6 m.(stated)
----------------------------------------3
1 Volume:
n.e. 0.1 m3
2 Volume:
0.1 - 0.2 m3
3 Volume:
0.2 - 0.5 m3
4 Volume:
0.5 - 1 m3
5 Volume:
1 - 2 m3
6 Volume:
2 - 4 m3
7 Volume:
4 -8 m
8 Volume:
exc. 8 m3
(stated)
NOTES
1. Items shall be given in this class in
addition to the items for the provision
and jointing of pipes, ducts and culverts
and for the excavation, laying and
backfilling of pipes, ducts and culverts
laid in trenches in classes I and J.
Items shall be given in this class in
addition to the items for manholes and
other chambers in class K.
Page 24 of 37
----------------------------------------------------------nr
8 Off-site surface treatment
SECOND DIVISION
THIRD DIVISION
1 Rolled sections
2 Plates or flats
3 Built-up box or hollow sections
4 Other, (stated)
---------------------------------------------------------1 Deck panel
2 Bracings
3 External diaphragms
4 Other, (stated)
---------------------------------------------------------1 Columns
t
2 Beams
t
3 Trestles, towers and built-up
columns
t
4 Trusses and built-up girders
t
5 Bracings
t
6 Purlins and cladding rails
t
---------------------------------------------------------7 Grillages
t
8 Anchorages and holding down
assemblies
nr
---------------------------------------------------------1 Trial erection
t
2 Permanent erection
t
---------------------------------------------------------3 Site bolts: black
nr
4 Site bolts: HSFG general grade
nr
5 Site bolts: HSFG higher grade
nr
6 Site bolts: HSFG load indicating or
load limit types, general grade
nr
7 Site bolts: HSFG load indicating or
load limit types, higher grade
nr
8 Expansion bolts: anchor type
nr
----------------------------------------------------------1 Blast cleaning
2 Pickling
3 Flame cleaning
4 Wire brushing
5 Metal spraying
6 Galvanizing
7 Painting
1 Straight on plan
2 Curved on plan
3 Straight on plan and cambered
4 Curved on plan and cambered
---------------------------------------------------------
----------------------------------------------------------
------------------------------------------------------------------------------------------------------------------1 Diameter:
not exc.16 mm
2 Diameter:
16 - 20 mm
3 Diameter:
20 - 24 mm
4 Diameter:
24 - 30 mm
5 Diameter:
30 - 36 mm
6 Diameter:
36 - 42 mm
7 Diameter:
exc. 42 mm (stated)
-----------------------------------------------------------
NOTES
1. The materials and grades of materials
shall be stated in item descriptions for fabrication of members.
2. Item descriptions shall identify temporary
structural metalwork. Item descriptions for
fabrication shall identify tapered and
castellated members.
3. The mass of mild steel to BS 7668:2004
Weldable structural steels. Hot finished
structural hollow sections in weather
resistant steels. Specification grades 43A1
and 43A shall be taken for measurement as
785 kg/m3 per 100 mm thickness (7.85
t/m3). The mass of other metals shall be
taken as stated in the Specification or, where
not so stated, as stated in the supplier's
catalogues.
4. The mass of members shall be calculated from the overall lengths of the members
with no deductions for splay cut or mitred
ends.
Page 25 of 37
SECOND DIVISION
1
2
3
4
5
----------------------------------------------------------4 Handrails
m
5 Bridge parapets
m
----------------------------------------------------------6 Miscellaneous frames,
dimensions, (stated)
m
----------------------------------------------------------2
7 Flooring, dimensions, (stated)
m
----------------------------------------------------------2
8 Screens, dimensions, (stated)
m
----------------------------------------------------------2
9 Plate, dimensions, (stated)
m
----------------------------------------------------------2
1 Cladding
m
2
2 Welded mesh panelling
m
2
3 Duct covers
m
4 Tie rods
nr
5 Walings
nr
----------------------------------------------------------6 Bridge bearings
nr
----------------------------------------------------------2
9 Hand stops (stated)
m
THIRD DIVISION
----------------------------------------------------------1 Roller
2 Slide
3 Rocker
4 Cylindrical
5 Spherical
6 Plain rubber
7 Laminated rubber
8 Rubber pot
----------------------------------------------------------3
1 Volume:
n.e.
1 m3
2 Volume:
13 m3
3 Volume:
3 - 10 m3
4 Volume:
10 - 30 m3
5 Volume:
30 - 100 m3
6 Volume:
100 - 300 m3
7 Volume:
300 - 1000 m3
8 Volume:
exc. 1000 m
----------------------------------------------------------1 Cover description (stated)
----------------------------------------------------------1 Roof vent assembly, dia.: 50 mm
2 Roof vent assembly, dia.: 80 mm
3 Roof vent assembly, dia.: 100 mm
4 Roof vent assembly, dia.: 150 mm
-----------------------------------------------------------
NOTES
1. Item descriptions shall state the
specification and thickness of metal used
off-site surface treatments and principal
dimensions of miscellaneous metalwork
assemblies.
Alternatively,
item
descriptions may identify assemblies by
mark numbers related to detail shown on
the Drawings or given in the
Specification.
2. Masses calculated for measurement
of miscellaneous metalwork assemblies
shall include the mass of all metal
components and attached pieces.
Separate items are not required for the
components of miscellaneous metalwork
assemblies.
Page 27 of 37
CLASS O: TIMBER
Includes:
Timber components and fittings Timber decking
Excludes: Formwork to concrete (included in class G). Timber piles (included in class
P). Timber sleepers (included in class S). Timber fencing (included in class X).
Building carpentry and joinery.
1
2
3
THIRD DIVISION
SECOND DIVISION
FIRST DIVISION
m
m
m
----------------------------------------------------------8 Roofing
nr
m2
m2
m2
m2
m2
2
1 X-sect. area:
n.e. 0.01
2 X-sect. area:
0.01 - 0.02
3 X-sect. area:
0.02 - 0.04
4 X-sect. area:
0.04 - 0.10
5 X-sect. area:
0.10 - 0.20
6 X-sect. area:
0.20 - 0.40 m
7 X-sect. area: exc. 0.4 m2 (stated)
----------------------------------------------------------1 Thickness:
25 mm
2 Thickness:
50 mm
3 Thickness:
75 mm
4 Thickness:
100 mm
5 Thickness:
125 mm
6 Thickness:
150 mm
7 Thickness:
200 mm
8 Thickness:
225 mm
9 Thickness
exc. 225 mm, (stated)
----------------------------------------------------------1 Straps of dimensions, (stated)
2 Spikes of length, diameter, (stated)
3 Coach screws of length, diameter,
(stated)
4 Bolts of diameter, length, (stated)
5 Plates of dimensions, (stated)
----------------------------------------------------------1 Truss assemblies, (stated)
2 Rafters, (stated)
1 Length:
n.e. 1.5 m
2 Length:
1.5 - 3 m
3 Length:
3 - 5 m
4 Length:
5 - 8 m
5 Length:
8 - 12 m
6 Length:
12 - 20 m
7 Length:
exc. 20 m (stated)
----------------------------------------------------------1 Width
75 mm.
2 Width
100 mm.
3 Width
125 mm.
4 Width
150 mm.
5 Width
225 mm.
6 Width
250 mm.
7 Width
300 mm.
8 Width
450 mm.
9 Width,
exc. 450 mm., (stated)
-----------------------------------------------------------
-----------------------------------------------------------
NOTES
1. Timber components in buildings which
may be included in civil engineering contracts
need not be measured according to the
procedure set down in this class
2. The nominal gross cross-sectional
dimensions or thickness, species and any
impregnation requirements or special surface
finishes shall be stated in item descriptions
for timber components and decking.
Page 28 of 37
SECOND DIVISION
THIRD DIVISION
1 Depth:
n.e. 30 mm
2 Depth:
30 - 60 mm
3 Depth:
60 - 100 mm
4 Depth:
100 - 150 mm
5 Depth:
150 - 200 mm
6 Depth:
200 - 250 mm
7 Depth:
250 - 300 mm
8 Depth:
exc. 300 mm (stated)
-----------------------------------------------------------
----------------------------------------------------------m
5 Joints in concrete pavements
-----------------------------------------------------------
-----------------------------------------------------------
----------------------------------------------------------1 Depth:
n.e. 30 mm
2 Depth:
30 - 60 mm
3 Depth:
60 - 100 mm
4 Depth:
100 - 150 mm
5 Depth:
150 - 200 mm
6 Depth:
200 - 250 mm
7 Depth:
250 - 300 mm
8 Depth:
exc. 300 mm (stated)
-----------------------------------------------------------
----------------------------------------------------------1 Depth:
n.e. 30 mm
2 Depth:
30 - 60 mm
3 Depth:
60 - 100 mm
4 Depth:
100 - 150 mm
5 Depth:
150 - 200 mm
6 Depth:
200 - 250 mm
7 Depth:
250 - 300 mm
8 Depth:
exc. 300 mm (stated)
----------------------------------------------------------2
1 Nom. mass:
n.e. 2 kg/m2
2 Nom. mass:
2 - 3 kg/m2
3 Nom. mass:
3 - 4 kg/m2
4 Nom. mass:
4 - 5 kg/m2
5 Nom. mass:
5 - 6 kg/m2
6 Nom. mass:
6 - 7 kg/m2
7 Nom. mass:
7 - 8 kg/m 2
8 Nom. mass:
exc.8 kg/m , (stated)
----------------------------------------------------------1 Diameter:
6 mm
2 Diameter:
8 mm
3 Diameter:
10 mm
4 Diameter:
12 mm
5 Diameter:
14 mm
6 Diameter:
16 mm
7 Diameter:
20 mm
8 Diameter:
25 mm or greater,
(stated)
-----------------------------------------------------------
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
----------------------------------------------------------2
m
7 Light duty pavements
----------------------------------------------------------8 Ancillaries
2
3
4
5
m
m
nr
nr
nr
----------------------------------------------------------1 Depth:
n.e. 30 mm
2 Depth:
30 - 60 mm
3 Depth:
60 - 100 mm
4 Depth:
100 - 150 mm
5 Depth:
150 - 200 mm
6 Depth:
200 - 250 mm
7 Depth:
250 - 300 mm
8 Depth:
exc. 300 mm (stated)
----------------------------------------------------------1 Non-illuminated
nr
2 Illuminated
nr
----------------------------------------------------------1 Using non-reflecting road studs,
(stated)
nr
2 Using reflecting road studs,
(stated)
nr
3 Using letters and shapes,
(stated)
nr
4 Using continuous lines, (stated)
m
5 Using intermittent lines, (stated)
m
NOTES
1. Item description for all courses of paving
and road making materials and pavement
slabs shall identify the materials and state the
depth of each course or slab.
2. Item descriptions for work in this class
which is applied to surface inclined at an
angle exceeding 10 to the horizontal shall so
state.
3. The width of each course of material shall
be measured at the top surface of the course.
The area of a manhole cover or other intrusion
into a surface shall not be deducted where the
are of the intrusion is less than one square
metre.
4. Item descriptions for steel fabric
reinforcements to Specification shall include
the type number or letter in accordance with
the method indicated in the specification.
Item descriptions for other fabric reinforcement shall state the material sizes and its
nominal mass per square metre. The area of
additional fabric in laps shall not be measured.
Page 30 of 37
SECOND DIVISION
THIRD DIVISION
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Common brickwork
Facing brickwork
Engineering brickwork
Lightweight blockwork
Dense concrete blockwork
Artificial stone blockwork
Ashlar masonry
Rubble masonry
---------------------------------------------------------9 Ancillaries
NOTES
1. Item descriptions for brickwork and
blockwork shall either state the materials,
nominal dimensions and types of brick or
block or give equivalent references to
applicable Standard specifications.
The
thickness of mass brickwork and blockwork
shall be stated in item descriptions where it
does not excess one metre.
2. The materials and nominal thickness shall
be stated in item descriptions for masonry.
3. Separate items are not required for joints,
pointing, fixings or ties to brickwork,
blockwork or masonry.
4. Item
descriptions
for
brickwork,
blockwork and masonry which is in cavity or
composite construction shall so state. Where
different bonding patterns are specified for the
same material, the bonding pattern shall be
stated in the item descriptions.
Page 31 of 37
CLASS V: PAINTING
Includes: In-situ painting, and in-situ surface preparation
Excludes: Painting and other surface treatment carried out prior to delivery of components
to Site and maintenance of such surfaces until completion (measured only for metalwork in
classes M & N)
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
1
2
3
4
5
6
7
8
2
3
4
5
6
----------------------------------------------------------2
7 On metal sections
m
2
8 On pipework
m
NOTES
Page 32 of 37
CLASS W: WATERPROOFING
Includes: Damp proofing, tanking and roofing
Excludes: Waterproofed joints (included in classes C, G, H, I, J, K, R, T, and X). Damp
proof courses in brickwork, blockwork and masonry (included in class U).
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
1
2
3
1
2
3
4
5
Using asphalt
Using sheet metal, material (stated)
Using waterproof sheeting
Using waterproof coating of (stated)
Using rendering in ordinary cement
mortar
6 Using rendering in waterproof cement
mortar
7 Using rendering with proprietary mix
mortar (stated)
----------------------------------------------------------1 Sand asphalt
2 Flexible sheeting
3 Sand
4 Sand and cement screed
5 Tiles
-----------------------------------------------------------
Damp proofing
Tanking
Roofing
-----------------------------------------------------------
NOTES
1. Item descriptions for work in this class
shall state the materials used and the number
and thickness of coatings or layers.
2. Separate items are not required for
preparing surfaces or for joints, overlaps,
mitres, angles, fillets, and built-up edges or
for laying to falls and cambers.
3. Surfaces of width not exceeding one
metre shall not be distinguished by inclination
or curvature.
Page 33 of 37
Fences
SECOND DIVISION
THIRD DIVISION
1
2
3
4
5
6
1 Height:
n.e.
1m
2 Height:
1 - 1.25 m
3 Height:
1.25 - 1.50 m
4 Height:
1.50 - 2 m
5 Height:
2 - 2.50 m
6 Height:
2.50 - 3 m
7 Height:
exc. 3 m (stated)
----------------------------------------------------------1 Width:
n.e. 1.5 m
2 Width:
1.5 - 2 m
3 Width:
2 - 2.5 m
4 Width:
2.5 - 3 m
5 Width:
3 - 4 m
6 Width:
4 - 5 m
7 Width:
exc. 5 m (stated)
----------------------------------------------------------1 Gutters
m
2 Fittings to gutters
nr
3 Downpipes
m
4 Fittings to downpipes
nr
-----------------------------------------------------------
----------------------------------------------------------nr
2 Gates and stiles
----------------------------------------------------------6 Windows
nr
----------------------------------------------------------7 Doors
nr
----------------------------------------------------------3
m
8 Filter media
Graded gravel
-----------------------------------------------------------
----------------------------------------------------------1 Diameter:
100 mm
2 Diameter:
150 mm
3 Diameter:
200 mm
4 Diameter:
250 mm
5 Diameter:
exc. 250 mm (stated)
----------------------------------------------------------2
1 Area:
n.e. 1 m2
2 Area:
1 - 2 m2
3 Area:
2 - 3 m2
4 Area:
3 - 4 m2
5 Area:
4 - 5 m2
6 Area:
exc. 5 m (stated)
NOTES
1. The types and principal dimensions
of fences, gates and stiles and of their
foundations shall be stated in item
descriptions.
Page 35 of 37
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
1
2
3
4
5
6
7
8
9
1 Cleaning
m
-------------------------------2 Removing
intrusions
nr
Preparation of
existing sewers
N.b.
n.e. 100 mm
N.b. exc. 100 - 200 mm
N.b. exc. 200 - 300 mm
N.b. exc. 300 - 400 mm
N.b. exc. 400 - 500 mm
N.b. exc. 500 - 600 mm
N.b. exc. 600 - 900 mm
N.b. exc. 900 - 1200 mm
N.b. exc. 1200 mm
(stated)
5 Local internal
repairs
----------------------------2 Stabilisation of
existing sewers
-----------------------------3 Renovation of
existing
sewers
m
-----------------------------2
Laterals to
renovated
nr
sewers
------------------------------
-------------------------------
---------------------------------------1 material
N.b. (stated)
n.e. 100 mm
2 N.b. exc. 100 - 200 mm
3 N.b. exc. 200 - 300 mm
4 N.b. exc. 300 - 400 mm
5 N.b. exc. 400 - 500 mm
6 N.b. exc. 500 - 600 mm
7 N.b. exc. 600 - 900 mm
8 N.b. exc. 900 - 1200 mm
9 N.b. exc. 1200 mm
(stated)
---------------------------------------1 N.b.
n.e. 100 mm
2 N.b. exc. 100 - 200 mm
3 N.b. exc. 200 - 300 mm
4 N.b. exc. 300 - 400 mm
5 N.b. exc. 400 - 500 mm
6 N.b. exc. 500 - 600 mm
7 N.b. exc. 600 - 900 mm
8 N.b. exc. 900 - 1200 mm
9 N.b. exc. 1200 mm
(stated)
---------------------------------------1 N.b.
n.e. 100 mm
2 N.b. exc. 100 - 200 mm
3 N.b. exc. 200 - 300 mm
4 N.b. exc. 300 - 400 mm
5 N.b. exc. 400 - 500 mm
6 N.b. exc. 500 - 600 mm
7 N.b. exc. 600 - 900 mm
8 N.b. exc. 900 - 1200 mm
9 N.b. exc. 1200 mm
(stated)
---------------------------------------1 N.b.
n.e. 100 mm
2 N.b. exc. 100 - 200 mm
3 N.b. exc. 200 - 300 mm
4 N.b. exc. 300 - 400 mm
5 N.b. exc. 400 - 500 mm
6 N.b. exc. 500 600 mm
7 N.b. exc. 600 mm (stated)
----------------------------------------
nr
-------------------------------1 Sliplining
-------------------------------------1 Polyethylene
2 Polypropylene
-------------------------------------1 Polyethylene
2 Polypropylene
3 Glass reinforced
plastic
-------------------------------------1 Glass reinforced
plastic
2 Glass reinforced
concrete
3 Sprayed gunite
4 Resin concrete
--------------------------------------
-------------------------------2 Flapvalves
--------------------------------
--------------------------------------
FIRST DIVISION
SECOND DIVISION
THIRD DIVISION
FOURTH DIVISION
1
2
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
New manholes in
new locations nr
New manholes
replacing existing
manholes
nr
3
4
5
6
Brick
Brick with backdrop
In-situ concrete
In-situ concrete
with backdrop
Precast concrete
Precast concrete
with backdrop
Masonry or
blockwork
Masonry or block
work with backdrop
Other (stated)
N. b.
n.e. 100 mm
N. b. exc. 100 - 200 mm
N. b. exc. 200 - 300 mm
N. b. exc. 300 - 400 mm
N. b. exc. 400 - 500 mm
N. b. exc. 500 - 600 mm
N. b. exc. 600 - 900 mm
N. b. exc. 900 - 1200 mm
N. b. exc. 1200 mm
(stated)
---------------------------------------1 Depth:
n.e. 1.5 m
2 Depth:
1.5 - 2 m
3 Depth:
2-3m
4 Depth:
3-4m
5 Depth:
4-5m
6 Depth:
5-6m
7 Depth:
exc. 6m (stated)
FIFTH DIVISION
--------------------------------1 Preparation of
existing sewers
2 Stabilisation of
existing sewers
--------------------------------3 Renovation of
existing sewers
-----------------------------------1 Abandonment
2 Alteration
------------------------------------
-----------------------------------1 Sliplining
2 In-situ jointed pipe
lining
3 Segmental lining
4 Proprietary lining,
(stated)
5 Gunite coating
6 Annulus grouting
------------------------------------
MEASUREMENT RULES
M1 Lengths of sewers shall
be measured along their
centre lines between the
inside surfaces of manholes but shall exclude
lengths occupied by pipes
and fittings comprising
backdrops to manholes.
M2 Where work is expressly required to be carried out by excavation,
crossings, reinstatement
and other sewer-work
ancillaries
shall
be
measured in class K and
extras to excavation and
backfilling
shall
be
measured in class L.
D4
D5
M3 No deduction shall be
made from the areas of
sewer surfaces measured
for pointing for openings
or voids each not exceed2
ing 0.5 m in area.
D1
D2
D3
DEFINITION RULES
A4
ADDITIONAL
DESCRIPTION RULES
A1
A2
A3
A5
A6
A7
A8
A9