Metal framed suspended ceiling comprises of G.I perimeter channel having 0.55 mm thickness, two unequal flanges of 20 and 30 mm and web of 27 mm is fixed to surrounding walls/partition using nylon sleeves and screws at 450 mm centres. Then intermediate channel (0.91mm thick) having two equal flanges of 15 mm each and a web of 45 mm is suspended from the soffit at 1220 mm centre with ceiling angle of width 25 mm x 10 mm x 0.55 mm thick, fixed to soffit with G.I cleat and steel expansion fasteners. Ceiling section of 0.55 mm thickness having knurled web of 50.5 mm and flanges of 26 mm each with lips of 10.5 mm are then fixed to the intermediate channel with connecting clips across to the Intermediate channel, at 610/457 mm centers. 8 mm thick square/tapered edge Hilux Calcium Silicate Boards are then screw fixed along/across the ceiling sections with 25 mm long self drilling & tapping screws having Phillips head with under head cutter, at 200 mm centres through the Hilux Calcium Silicate Board fillets.
The joints of the face boards are finished with specially formulated jointing compound and 48 mm wide fibre tape to provide seamless finish.
G.I. perimeter channel and supporting materials are to be provided to make any opening for light fittings, diffusers etc. and should be supported properly to maintain the integrity of the ceiling, and should be charged extra.
| S.No. | ITEM | DESCRIPTION | QUANTITY |
|---|---|---|---|
| 1. | Hilux Board | 6’ x 4’ – 8 mm | 40 Nos. |
| 2. | Perimeter channel | 0.55 x 20 x 30 x 27 x 3660 mm | 11 Nos. |
| 3. | Intermediate channel | 0.9 x 45 x 15 x 15 x 3660 mm | 23 Nos. |
| 4. | Ceiling Section | 0.55 x 50.5 x 26 x 26 x 10.5 x 10.5 x 3660 mm | 63 Nos. |
| 5. | Ceiling Angle | 25 x 10 x 0.55 mm [Based on 0.9 m suspension] | 18 Nos. |
| 6. | Connecting clip | 2.64 mm 1 | 80 Nos. |
| 7. | Soffit cleat | 0.55 x 25 x 37 x 25 mm | 64 Nos. |
| 8. | Rawl Plug | 12.7 mm | 64 Nos. |
| 9. | Self drilling & tapping screws | 25 mm long | 1200 Nos. |
| 10. | Jointing compound | 20 Kg | 3 Bags |
| 11. | Self-adhesive fibre tape | 48 mm wide | 2 Rolls |
Exposed grid ceiling comprises of pre-coated steel angle of size 24 x 24 mm, fixed to the brick wall/partition at the perimeter of the ceiling by nylon sleeves and wood screws at 450 mm centres. Main "T" with pre-coated steel at the bottom, and 'H' notches at 300 mm centres, interlocking notches at both end, of size 24 x 38 x 3600 mm is suspended from the soffit at 1200 mm centres with the help of metal rowl plug, soffit cleat and a level clip with 4 mm dia. G.I. wire. Cross "T" of size 24 x 38 x 1200 mm with bottom pre-coated steel and 'H' notch in the centre and interlocking notches at both the ends, is to be inserted fixed to the Main "T" at 600 mm centres to form a grid of 600x1200 mm. Another cross 'T' of size 24 x 38 x 600 mm with inter locking notches at both ends is inserted fixed to the centre notch of above cross 'T' to form a grid of size 600 x 600 mm. Hilux Calcium Silicate Boards cut to size 595 x 1195 or 595 x 595 mm are then laid on to the grid accordingly.
| S.No. | ITEM | DESCRIPTION QUANTITY | |
|---|---|---|---|
| 1. | Hilux Board | 6’ x 4’ – 6 mm | 139 Nos. |
| 2. | Pre coated wall angle | 24 x 24 mm | 11 Nos. |
| 3. | Pre coated Main “T” | 24 x 38 x 3600 mm | 24 Nos. |
| 4. | Pre coated Cross “T” | 24 x 38 x 1200 mm | 140 Nos. |
| 5. | Soffit cleat | 0.55 x 25 x 37 x 25 mm | 64 Nos. |
| 6. | Rawl Plug | 12.7 mm | 64 Nos. |
| 7. | Level clip | 4 mm | 64 Nos. |
| S.No. | ITEM | DESCRIPTION | QUANTITY |
|---|---|---|---|
| 1. | Hilux Board | 2’ x 2’ – 6 mm | 278 Nos. |
| 2. | Pre coated wall angle | 24 x 24 mm | 11 Nos. |
| 3. | Pre coated Main “T” | 24 x 38 x 3600 mm | 24 Nos. |
| 4. | Pre coated Cross “T” | 24 x 38 x 1200 mm | 117 Nos. |
| 5. | Pre coated Cross “T” | 24 x 38 x 600 mm | 140 Nos. |
| 6. | Soffit cleat | 0.55 x 25 x 37 x 25 mm | 64 Nos. |
| 7. | Rawl Plug | 12.7 mm | 64 Nos. |
| 8. | Level clip | 4 mm | 64 Nos. |