QCS 2014 - 3.7 Roller Shutter FIre Doors

QCS 2010 Section 17 Part 3 Metal Doors and Windows Page 7
3.5.3 Steel Windows
1 Steel windows shall be constructed and assembled in accordance with the specification for
proprietary steel windows shall be as detailed in the Project Documentation. In addition, steel
windows shall comply with the provisions of BS 5368 and BS 6375 for testing and
performance.
2 Steel windows and frames shall be manufactured in properly equipped workshops by

tradesmen proficient in such work. All machinery employed shall be capable of accurately
preparing, producing and finishing window frames.
3 Steel windows and frames made of hot dip galvanised steel shall additionally conform to BS
729.
Qatar Project Management

4 Steel windows shall be finished as shown in the Project Documentation. They shall be
cleaned, filed, ground smooth and either painted with one coat of redhead primer prior to the
finished painting or stove enamelled to a colour chosen by the Engineer
3.6 INSTALLATION OF STEEL DOOR FRAMES
3.6.1 General Requirements
1 Frames will be fixed plumb, level and securely to prevent deflection or movement.
2 Frames built-in as the surrounding structure is constructed are to be fixed with cramps at
maximum 600 mm centres. One cramp is to be located 200 mm from the bottom of the frame
and 200 mm from the top or at the nearest adjacent bed joint. Voids in the backs of frames
are to be filled in solid with grout as the work proceeds.
3 Frames which are to be built-in are to be braced with temporary struts to prevent distortion.
Base ties to be removed after the blockwork has set and before the floor finish is laid.
4 Frames to previously prepared openings are to be fixed with screw fastenings extending into
the structural reveal at least 40 mm and at maximum 450 mm centres. One fastening to be
located 200 mm from the bottom of the frame and one 200 mm from the top.
3.7 ROLLER SHUTTER FIRE DOORS
3.7.1 General
1 Operation of rolling shutter fire doors shall be manual (push up, chain hoist or waist high
crank hoist) or motor operated as stated in the Project Documentation.
2 Mounting of door shall be either interior face mounted on a prepared opening or interior
mounted between jambs and under a lintel in a prepared opening.
3 Fire rating of doors to be 3 hours rated sized in accordance with BS 476, the Project
Documentation and tested and approved by the Civil Defence Department.
4 Automatic Closing. To be fitted with an automatic closing device, triggered by a closing

mechanism by melting of a fusible link at 71 ºC unit to be in operative during normal
operations. The release mechanism to be easily reset. Smoke detection is also to be fitted to
the release device.
QCS 2010
5 Quality Assurance
(a) furnish each overhead roller shutter door as a complete unit produced by one
manufacturer, including hardware, accessories, mounting and installation of
components.
(b) inserts and anchorages: Furnish inserts and anchoring devices to be set in concrete
or built into masonry to install units. Provide setting out drawings, templates,
instructions, and directions to install the anchorage devices.
3.7.2 Components
1 The shutter door panel or curtain shall include at minimum the elements as follows:
(a) slats, formed in continuous lengths of stainless steel to BS 1449 or galvanized steel
(b) each end of the slats to be fitted with malleable iron end locks, continuous, to act as

wearing surface in the guides to maintain slat alignment and to prevent flame passage
(c) the curtain shall be reinforced with a stainless steel or galvanized steel bottom bar of
two (2) angles. Lift handles to be provided on both sides of the door.
2 The spring counter balance shall comply with the following:

(a) the counter balance shall be housed in a steel pipe of diameter and wall thickness to
restrict maximum defection to 2.5 mm/m of door width
(b) springs shall be the helical torsion type designed to include an over load factor of 25 %
and for optimum ease of operation. Springs to be grease packed and mounted on a
cold rolled steel inner shaft
(c) spring tension shall be adjustable from outside of end bracket plate
(d) ball bearings shall be sealed to minimise wear of pipe rotation around inner shaft
3 Bracket plates shall comply with the following:

(a) plates are to be made of stainless or galvanized steel thickness 6.35 mm carrying a
pipe counter balancing shaft to house ends of door coil
(b) the drive end bracket plate shall be fitted with a sealed ball bearing
(c) the door shall be equipped with an oscillating governor as required to control the speed
of descent.
4 Guides/wall angles shall be stainless or galvanized steel angles of 4.76 mm minimum

thickness.
5 Hoods to house the coil are to be fabricated of stainless or galvanized steel.
6 Locking shall one of the following as stated in the Project Documentation:

(a) slide bolts - on bottom bar or manual push up, suitable for pad locks
(b) hand chain lock - locking bracket to be provided on guide angle
(c) locking disc - to be provided on crank box of crank hoist
(d) integral gearing - on motor to provide locking of door.
7 The finish on galvanized surfaces shall be as follows:

(a) baked on coat of epoxy modified polyester on slabs and hood
(b) shop coat of rust inhibiting metallic primer on all remaining ungalvanized surfaces,
except bearings.
3.7.3 Electrically Operated Doors
1 Electric door operators shall conform to BS 7036
QCS 2010
2 Unless otherwise indicated as having manual operation, provide electric operators for doors.
Provide an electric door operator assembly of size and capacity recommended and provided
by the door manufacturer, complete with electric motor and factory-prewired motor controls,
gear-reduction unit, solenoid-operated brake, remote control stations, control panels conduit
and wiring from controls to motor and central stations, and accessories required for proper
operations
3 Disconnect mechanism - provide a hand operated disconnect or a mechanism for

automatically engaging a sprocket-and-chain operated and releasing brake for emergency
manual operation. Mount disconnect and operator so they are accessible from floor level.
Include interlock device to automatically prevent motor from operating when emergency
operator is engaged
4 Door operator type - provide a wall or bracket-mounted door operator units consisting of

electric motor, worm gear drive from motor to reduction gear box, chain or worm gear drive
from a reduction box to a gear wheel mounted on a counterbalanced shaft, and a disconnect
release for manual operation. Provide a motor and drive assembly of horsepower and design
as determined by the door manufacturer to the size of door required. The operator shall be
designed so that motor may be removed without disturbing the limit-switch adjustment and
without affecting the emergency auxiliary operator
5 Electric motors - provide high-starting torque, reversible, Class A insulated electric motors
with overload protection. Size the motor to move the door in either direction, from any
position, at not less than 0.2 m nor than 0.3 m per second. The wiring requirement and
current characteristics of the motors shall be co-ordinated with the building electrical system.
Supply totally enclosed, fan-cooled type motors, fitted with a plugged drain.
6 Remote control station - provide a momentary contact, three button control station with push-
button controls labelled “Open”, “Close”, and “Stop”. Supply a keyed lockout feature with a
key cylinder masterkeyed to the building system. Provide interior units with a fully guarded,
surface-mounted, heavy-duty, general purpose NEMA type 1 enclosure
7 Automatic reversing control - supply each door with an automatic safety switch, extending the
full width of the door bottom, and located within neoprene or rubber astragal mounted to
bottom of the door rail. Contact with switch before closing will immediately stop downward
travel and reverse direction to a fully opened position. Connect to control circuit through
retracting safety cord and reel, or self-coiling cable. Provide electrically actuated automatic
bottom bar. Ungalvanized or non stainless steel surfaces to be coated with rust inhibiting
metallic primer on exposed ferrous surfaces, except bearings
8 Fail safe - depending on the location of doors the below systems shall be used for
circumstances as follows:
(a) bi-parting doors to exterior: doors drive fully open automatically on power failure/fire
alarm. Fail-safe shall consist of a 12 V DC/110 V AC inverter also incorporating
battery alarm/monitory to alert user if power is low. Doors automatically return to
original function mode when power is returned or fire signals are de-activated
(b) bi-parting doors within building which serve to section off or divide fire zones:
(i) doors to close under power failure/smoke alarm
(ii) continuous operations under power failure (min. 50 operations required)
(iii) to be operable manually
3.8 INSTALLATION
3.8.1 General Requirements
1 Installation of units shall be undertaken by the manufacturer’s authorised representative and

in accordance with manufacturer’s standards and instruction.
2 Installation shall comply with the latest NFPA 80.
QCS 2010

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QCS 2010 Section 17 Part 3 Metal Doors and Windows Page 7

3.5.3 Steel Windows

2 Steel windows and frames shall be manufactured in properly equipped workshops by

Qatar Project Management

3.6 INSTALLATION OF STEEL DOOR FRAMES

3.6.1 General Requirements

3.7 ROLLER SHUTTER FIRE DOORS

4 Automatic Closing. To be fitted with an automatic closing device, triggered by a closing

Qatar Project Management

2 The spring counter balance shall comply with the following:

3 Bracket plates shall comply with the following:

4 Guides/wall angles shall be stainless or galvanized steel angles of 4.76 mm minimum

5 Hoods to house the coil are to be fabricated of stainless or galvanized steel.

6 Locking shall one of the following as stated in the Project Documentation:

7 The finish on galvanized surfaces shall be as follows:

3.7.3 Electrically Operated Doors

1 Electric door operators shall conform to BS 7036

3 Disconnect mechanism - provide a hand operated disconnect or a mechanism for

Qatar Project Management

3.8.1 General Requirements

1 Installation of units shall be undertaken by the manufacturer’s authorised representative and

2 Installation shall comply with the latest NFPA 80.

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