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| 1 | S & F for Wind turbo ventilator Model Hurricane 600E wind driven turbine ventilators of neck diameter 600mm with 24 Nos vertical straight vanes, cylinderical shape centrifugal type rotating head. The thickness of the vanes is of 0.71mm, top dome 1.0mm, neck and vari -pitch elbow of0.71mm aluminium construction. The head supporting brackets are made of 4mm thick aluminium alloy strips. The NSK bearings of heavy duty double row type on top and double sealed ball bearing on the bottom side of the shaft. Shaft shall be of stainless steel. The wind driven ventilator shall be free enough to rotate even at a wind speed of 2kmph. The rotating head with aluminium variable angle throat shall be mounted on aluminium ring andshall be able to counter the roof slope of range 0-18 degree and enable vertical-to-ground installation of the head. The grey colour FRP base shall be 2mm thick and UV stabilised. The Ventilaor system shall be resistant to leakage during rain as per AS 2428.1. The system to be fitted by cutting and fixing existing pattern roof sheet in roof top and completely packed and making good and fixed with self tapping screws complete all as specified and directed by the Engr-in-Charge Note: (i) The turbo ventilator should have minimum 5 years of manufacturer\"s warranty. (ii) Make: SVS or equivelant as approved by GE(iii) Ventilator is required to be installed at height upto 12 meter. Bidders are requested to consider this aspect while quoting. Nothing extra shall be paid on this account. |
| 2 | Specification details are as under :-(a) Neck/Throat diameter-600mm(b) Turbine dia/Centre width - 765mmm, + or - 5mm tolerance(c) Height- 640mmm, + or - 5mm tolerance(d) Bottom ring dia - 625mmm, + or - 5mm tolerance(e) Vanes (blades) - 24vanes, Aluminium 0.71mm thick, Alloy 8011/5005(f) Top plate MOC - Aluminium 1.0mm thick(g) Rotation (Bearings) - Tandaco double row heavy duty ball bearing system(h) Centre Shaft - Diameter 19mm SS410(j) Outer arms/Throat brackets - Aluminium strip -4mm thick(k) Variable Angle Elbow - Aluminium elbow 0.71mm thick capable of countering roof slope up to 18 degrees.(l) FRP base plate - 1.5mm-2mm thick 1mtr wide (approx) and 1mtr long matching roof sheet profile.(m) Installation hardware - Stainless Nut & bolts(n) Rivets - Aluminium alloy blind /pop rivets. |
| 3 | Dismantling of Plain or corrugated steel sheeting, any gauge, thickness, including Nainital or similar pattern roof coveringsor semi corrugatedsheet etcanythicknessincluding ridges as in roof covering and stacking at site where directedand removal of debris to a outside MOD land and depositing where directed complete all as directed. |
| 4 | S&F pre-painted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws complete all as specified and directed. |
| 5 | M & L Framed brackets of angles or tees with web and flanges cut to shape, drilled and countersunk for screw, including bending and welding angles, as necessary, gusset plates, riveting, etc.. n exc 10 kg each brackets, conforming to Fe.290.Gde-E-165 (Brackets over 10 kg each to be measured\"Structural Steel\") complete all as specified and directed. |
| 6 | S&FPoly corbonate corrugated sheet 2mm thick with color coated and water proofas in roof covering/cladding to wall, fixed with self tapping screws all as specified and directed. |
| 7 | M&L for painting to new steel surfaces of any description, over 10cm width or girth two coats with synthetic enamel paint over a coat of red oxide primer including preparation of surfaces complete all as specified. |
| 8 | M&L for preparation of old painted Steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying one coat of Synthetic enamel paint (ordinary tint) complete all as specified and directed. |
| 9 | S & Fin repairs8mm thick Fire reistant Sheet glass with inbuilt metal mesh of any size quality as per ISO9001 and fixing arrangements with steel frame with clips etc completeall as directed by Engr-in-Charge and as specified.Note : Work to be executed at height upto 12 meter. Cost for the same is deemed to be included in quoted rate. Nothing extra shall be paid on this account. |
| 10 | S&F for Plain, galvanised, mild steel sheeting, 1mm thickness as in ridges, hips, valley gutters, drip and straight flashings (length and girth as fixed) with grade of zinc coating 275 including necessayr frame work etc Complete all as specified and directed. |
| 11 | Schedule of credit amount of Rs 382288.00 to be deducted during AOC. |
