| CONTENTS SCOPE OF WORK SUBMITTALS SITE INSTALLATION WORKS FRAME WORK INSPECTION, MEP CLEARNCE & CLOSURE FINISHING GYPSUM BOARD ASSEMBLIES FINAL CHECK UP AND HANDING OVER SNAGGING / DESNAGGING |
- SCOPE OF WORK
- Supply and installation of Gypsum ceiling all in accordance with specification, contract documents & BOQ.
- SUBMITTALS
- All the layout and construction details to be incorporated into the work shall be prepared on shop drawing and submitted for consultant’s approval. Consultants approval should be obtained prior to the commencement of work. Commented drawings will be resubmitted incorporating the comments.
- All the material submittals will be made and which are to be approved by the Consultants prior to the incorporation into the works. On receipt of material approval the material procurement will follow by placing orders with suppliers.
- SITE INSTALLATION WORKS
- SITE SURVEY
- On receipt of the shop drawings approved by the Consultants, the site will be surveyed and any discrepancy found will be notified to the Main Contractor for clarification.
- SITE SURVEY
- SETTING OUT
- Setting out & marking will be done as per approved shop drawing. The surveyor will carry out the layout markings as per the approved drawings in concurrence with the schedule of works, area availability and as per the Site Engineer’s instructions. Ceiling layout shall be marked based on the datum line provided by the Main Contractor. Based on the datum lines, chalk lines will be marked for fixing the wall angle according to the ceiling level. Any discrepancies to the drawing and the setting out found will be brought to the notice of the main contractor. Once the wall angles are fixed the framing of the ceiling is done and the same is submitted for inspection of the engineer for approval.
- FRAME WORK
- Based on the datum lines, chalk lines will be marked for fixing the wall angles. From the datum the ceiling level is marked and the wall angle is fixed. Then the position of ceiling hangers is marked at 1200 mm centers both directionally. Hangers will be fixed on the structural soffit as per the approved shop drawing detail along the main carriers. Spacing of hangers shall not exceed 1200 mm. The bottom of the hanger is fixed to the carrying channel by using chrome plated self tapping screws. To the carrying channels the furring channels are fixed perpendicularly at 600 mm centers. The furring channels are fixed by using self tapping channel screws 12 mm long. The bottom level of the furring will be to the level of the wall angle fixed. The framing is complete for boarding.
- FRAME WORK INSPECTION, MEP CLEARNCE & CLOSURE
- Upon receipt of framework approval and MEP clearance, closure can be commenced by fixing the gypsum board to the framing with screw fixings as recommended by the manufacturer. The gypsum board is fixed to the framing by a staggering adjacent layer of boards and perpendicular to the furring.
- FINISHING GYPSUM BOARD ASSEMBLIES
- Upon completion of the gypsum boarding to the frame, the joints are treated with the approved joint compound with a level 4 finish. The open joints and damages are pre-filled with the compound. The joints are taped with a fibre tape. Then the joint compound is applied in two layers for width 75 mm each to either side of the joint. After drying the joint compound is sanded smooth to receive paint.
- FINAL CHECK UP AND HANDING OVER
- On completion of boarding and finishing the DESTEC site-in-charge will inspect the area and make sure that the ceiling is in true line and level and raise an RFI for Main Contractor’s and Consultant’s approval. All MEP services mounted on the ceiling is marked by the MEP team and the same to be cut according to the markings.
- SNAGGING / DESNAGGING
- Any minor discrepancy/snags identified during Main Contractor’s/Consultant’s Inspection which would be listed areas wise for desnagging.
- Upon completion of de-snagging, a witness request would be raised to the Main Contractor to “sign off” the snag list for the issuance of completion of works certificate.
