Irc SP 112 2017

f RC:SP:112-2017
MANUAL FOR QUALITY CONTROL

IN
ROAD & BRIDGE WORKS
INDIAN ROADS CONGRESS

2017
IRC:SP:112-2017
to be rectified. Generally, the contract specifies a definite time period of rectification for each
type of distress. Accordingly, the Contiactor shall prepare a maintenance programme and
carry out the rectification accordingly'
Engineer shall inspect the works at all the 3 stages i.e. before, during and after rectification
anj verify compliance to the requirements of the Specifications. The requirements of sub-
section A.S of this Manual shall apply mutatis mutandis to the various inspection and test
rcquirements during O&M.
Any other tests or surveys required during O&M viz., visual condition surveys, BBD/FWD
and roughness tests shali be carried out in accordance with relevant codes and conformance
to the rJquirements of the agreement shall be verified and ensured. Any non-conformance
shall be processed as per Section 11 of this Manual.
8.7 Third PartY testing

Some of the tests may have to be conducted in the third party laboratories in case of special
tests and also if the Contractor does not have the test equipment and expertise to carry
out the tests, which include special tests on Cement, Bitumen, Steel, Bearings, Agregate,
Geogrid, other forms of soil reinforcement, RE fill, stone polishing value of aggregate etc'
In
some cases the Employer/Authority or the Engineer may like to order confirmatory tests in
external laboratories, euen though the Contractor has the test facility at site. Such cases may
also include extensive and pooriy explained failure of structural and pavement elements'
Sampling shall be carried out joinfly by the parties including the Authority, Contractor and the
Engineei and the samples shall be cirefully numbered for unique identification and packed
for-despatch. lf the laboratory allows, the tests shall also be conducted in the presence of the
parties who sampled the materials. The external laboratories shall fulfill the requirements of
Section 5 and 6 of this Manual.
8.8 SamPling
Sampling of the materials should be done with utmost care as the right product may fail on
account of preparing and / or testing a wrong sample and vice versa. Moreover, the consituent
materials of road ire of heterogeneous quality and further subjected to heterogeneous
processes. Hence, sampling done at adjacent locations may still yield different results.
il"nc", statistical procedureJ shall oe appiied for sampling and testing as per Section 10 of
this Manual.
8.8.1 Sampling of Quarries

While sampling the stone quarries, the entire quarry shall be visually inspected for its
homogen q he quality and extent of over burden. Representative
sample s ly r conducting various tests. lf the quarry is being used
in any of c regared shall also be collected from the crushers for
approval of the source.
8.8.2 SamPling of Borrow Pits

The extent of the borrow pit
'25 shall be identified
and marked for delineating the area in to
various sections of aleast m X 25 m. Samples shall be collected from each such section
85
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G
IRC:SP:112-2017
F
which the
with an excavator if possible. Sample should represent the entire depth up to C
depth of such
contractor proposes to extract. Approval shall indicate the plot number and the
plot. e
8.8.3 SamPling of Stock Piles
e
Material is generally segregated in the stock
g
the size of the stock pile. Well Stocked piles u s
But, huge stock piles of 10 to 20 m also are A
collection of samples from such piles' Samp t-
front
from deep inside the stock pile. Surface samples are generaly segregated. Alternatively,
end loaders can be used to take out samples from deep inside and the required quantity can e
to quartering
be collected from each such scoop. The material so collected shall be subjected €
number and quantity of sample
and coning to arrive at the required sample for testing. The ;
shall be as per lS:383. u
e
8.8.4 Sampling of Trucks and Pavers
Segregation is possible ateach location in the tA
in the trucks or pavers to avoid segregation. t,
ease if such loading process is followed. lt is
t
behind the Paver than the hoPPer' t
(
8.8.5 SamPling on laYers
a
Sample of b layerwithout affecting the size of the aggregates. \t
In sampling it tter to cut a rectangular section than the core, if
to
we want g bitumen content. Core, cuts the aggregates and
(
the gradation or bitumen content found from such samples is not correct. I
8.8.6 Sfafisfica/ SamPling

Sample locations on the road layers can numbers to be
generated by some electronic gadgets. T the length and
ilriOtf' sequ"nti"lly, to choose thJlocations.
ng personnel in
the
selecting , all the defects g up the testing
so thatJampt ve and reflects the quality of the layer'
8.9 General Guidelines for Inspection & Testing

and
ln-process inspection and final inspection are very important aspects in QualityAssurance
hold points,
Control. Inspection should be done against a standard checklist at all important
requiring final or stage approvals. The check list shall inc steps and parameters
indicated in the method statements and the MORTH Speci Road & Bridge Works'
The work carried out using a set of equipment, material itions in a day can be
grouped for the purpose oideterming the'frequency/no. of tests, irrespective of the spread
puncturing of
of the locations. tt irre frequency splcified in the codes result in excessive
prior approval of
the layer or component, the frequency may be suitably reduced subject to
the Engineer. Reduction in number of destructive tests may be compensated by conducting
more non-destructive tests like nuclear density tests etc.
86
IRC:SP:112-2017
Annexure 8.1
SAMPLE FORMATS
st. Description Format lD

No
1 Test Frequency Schedule A-1
2 Formwork Inspection Checklist B-1
3 Reinforcement nspection Checklist

I B-2
4 Inspection Checklist before approval to concrete B-3
5 Proforma for Concrete Delivery and Pour Record B-4
6 Post Concreting lnspection B-5
7 Grain Size Analysis c-1
8 Determination of Particle Size by Hydrometer Method c-2
9 Liquid Limit & Plastic Limit c-3
10 Free Swell lndex c-4
11 Soil Specific Gravity Test c-5
12 Compaction Test c-6
13 CBR Test Results & CBR Test c-7 & c-8
14 Direct Shear Test c-9
15 Triaxial Shear Test c-10
16 Consolidation Test c-11
17 Soil Permeability Test - Constant Head Method & Variable Head Method c-12 & C-13
18 Swell Pressure Test by Constant Volume Method c-14
19 U nconfined Compressive Strength c-15
20 Aggregate lmpact Value - AIV c-16
21 Flakiness Index & Elongation Index c-17
22 Individual Gradation of Coarse Aggregate c-18
23 Sieve Analysis of Fine Aggregate c-19
24 Deleterious Material and Organic lmpurities c-20
25 Point Load Test c-21
26 Soundness Test by using Sodium Sulphate c-22
27 Specific Gravity & Water absorption of Fine Aggregate c-23
28 Specific Gravity & Water absorption of Coarse Aggregate c-24
87

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f RC:SP:112-2017

MANUAL FOR QUALITY CONTROL

ROAD & BRIDGE WORKS

INDIAN ROADS CONGRESS

8.7 Third PartY testing

8.8.1 Sampling of Quarries

8.8.2 SamPling of Borrow Pits

8.8.6 Sfafisfica/ SamPling

8.9 General Guidelines for Inspection & Testing

st. Description Format lD

3 Reinforcement nspection Checklist

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