B.
Use only factory made, threaded or toggle type inserts as required for supports and
anchors, properly sized for the load to be carried. Place inserts only in portions of the
main structure and not in any finishing material.
C. Use factory made expansion shields where inserts cannot be placed, but only where
approved by the Consultant and for light weights.
D. Do not use powder activated tools except with the written permission of the Consultant.
E. Supply and locate all inserts, holes, anchor bolts, and sleeves in good time when walls,
floors, and roof are erected.
F. Pass insulation unbroken where pipe or duct is insulated. Size sleeves to provide
adequate clearance all around and in accordance with specialist supplier’s
recommendations.
G. Use the following materials for pipe sleeves:
1. Through all interior walls above grade use uPVC Class C pipes, machine cut,
flush with finished structure. For nonmetallic pipe crossing in fire wall use steel
pipe (medium).
2. Through all exterior walls above grade use uPVC Class C pipes, machine cut,
flush with finished structure inside and to suit flashing on outside. Puddle flange
to be used as mentioned in clause3.08.
3. Through all exterior walls below grade and all other waterproof walls use uPVC
Class D sleeves, machine cut. Check flashing specification for further details.
4. Through all waterproof floors, janitor's closets, mechanical rooms, kitchens,
roofs, use uPVC Class 150 sleeves, machine cut. Extend sleeves 100 mm above
finished floor upwards and cut flush with underside of floor. Refer to flashing
detail through waterproof floors.
5. Provide 100 mm high, 100 mm wide watertight concrete curbs with 20 mm
chamfered edges around all pipes passing through waterproof floors except
where furred in. Read Concrete specification before proceeding with curbs. All
gaps to be filled up with waterproof type sealant.
6. Where uPVC pipes/ other pipework material passes through fire rated
walls/partitions, provide fire rated sleeves.
H. Pack all sleeves between the insulated pipe and the sleeve or where un-insulated
between the pipe and the sleeve with loose fibreglass insulation. Seal the annular space
as follows:
1. For all horizontal sleeves in exposed areas, use a seal equal or better fire rated
than the wall to be sealed.
2. For all vertical sleeves through roofs, janitor's closets, equipment rooms, use
permanently resilient silicone-based sealing compound, non-inflammable and
waterproof (fire sealant). Ensure that the seal is compatible with floor and ceiling
finishes. Check the room finishing schedules for further details and clarify if
necessary with the Consultant.
3. Cover exposed floor and wall pipe sleeves in finished areas with satin finish
chrome or nickel-plated solid brass or with satin finished stainless steel
escutcheons with non-ferrous set screws. Split cast plates of the screw locking
type may not be used. Do not use stamped steel friction type split plates Through
roofs, provide curbs and sleeves as shown on drawings and to suit flashing
requirements.
KEO/21-7387-0004 23 0500 / 17 Common Work Results For Hvac
Reem Hills Development
Twin Villas & Townhouses, Abu Dhabi
