₹4,305.85 per Sqm
Rates include GST and contractor’s profit & overheads (15%), effective 01-08-2024.
Designing, fabricating, testing, protection, installing and fixing in position semi (grid) unitized system ofstructural glazing (with open joints) for linear as well as curvilinear portions of the building for allheights and all levels, including:
(a) Structural analysis & design and preparation of shop drawings for the specified design loadsconforming to IS 875 part III (the system must passed the proof test at 1.5 times design wind pressurewithout any failure), including functional design of the aluminum sections for fixing glazing panels ofvarious thicknesses, aluminium cleats, sleeves and splice plates etc. gaskets, screws, toggles, nuts,bolts, clamps etc., structural and weather silicone sealants, flashings, fire stop (barrier)-cum-smokeseals, microwave cured EPDM gaskets for water tightness, pressure equalisation & drainage andprotection against fire hazard including:
(b) Fabricating and supplying serrated M.S. hot dip galvanised / Aluminium alloy of 6005 T5 brackets ofrequired sizes, sections and profiles etc. to accommodate 3 Dimentional movement for achievingperfect verticality and fixing structural glazing system rigidly to the RCC/ masonry/structural steelframework of building structure using stainless steel anchor fasteners/ bolts, nylon seperator to preventbimetallic contacts with nuts and washers etc. of stainless steel grade 316, of the required capacity andin required numbers.
(c) Providing and filling, two part pump filled, structural silicone sealant and one part weather siliconesealant compatible with the structural silicone sealant of required bite size in a clean and controlledfactory / work shop environment, including double sided spacer tape, setting blocks and backer rod, allof approved grade, brand and manufacture, as per the approved sealant design, within and all aroundthe perimeter for holding glass.
(d) Providing and fixing in position flashings of solid aluminium sheet 1 mm thick and of sizes, shapesand profiles, as required as per the site conditions, to seal the gap between the building structure andall its interfaces with curtain glazing to make it watertight.
(e) Making provision for drainage of moisture/ water that enters the curtain glazing system to make itwatertight, by incorporating principles of pressure equalization, providing suitable gutter profiles atbottom (if required), making necessary holes of required sizes and of required numbers etc. complete.This item includes cost of all inputs of designing, labour for fabricating and installation of aluminiumgrid, installation of glazed units, T&P, scaffolding and other incidental charges including wastages etc.,enabling temporary structures and services, cranes or cradles etc. as described above and as specified.The item includes the cost of getting all the structural and functional design including shop drawingschecked by a structural designer, dully approved by Engineer-in-charge. The item also includes thecost of all mock ups at site, cost of all samples of the individual components for testing in an approvedlaboratory, field tests on the assembled working structural glazing as specified, cleaning andprotection till the handing over of the building for occupation. In the end, the Contractor shall provide awater tight structural glazing having all the performance characteristics etc. all complete as required, asper the Architectural drawings, as per item description, as specified, as per the approved shopdrawings and as directed by the Engineer- in-Charge.
Note:- 1. The cost of providing extruded aluminium frames, shadow boxes, extruded aluminium sectioncapping for fixing in the grooves of the curtain glazing and vermin proof stainless steel wire mesh shallbe paid for separately under relevant items under this sub- head. However, for the purpose of payment,only the actual area of structural glazing (including width of grooves) on the external face shall bemeasured in sqm. up to two decimal places.
Note:-2. The following performance test are to be conducted on structural glazing system if area ofstructural glazing exceeds 2500 Sqm from the certified laboratories accreditated by NABL(NationalAccreditation Board for Testing and Calibration Laboratories), Department of Science & Technologies,India. Cost of testing is payable separately.
The NIT approving authority will decide the necessity of testing on the basis of cost of the work, cost ofthe test and importance of the work. Performance Testing of Structural glazing system Tests to beconducted in the NABL accredited lab or any other accreditation body which operates in accordancewith ISO/IEC 17011 and accredits labs as per ISO/IEC 17026
1 Performance Laboratory Test for Air Leakage Test (-50pa to - 300pa) & (+50pa to +300pa) as per ASTME-283-04 testing method for a range of testing limit 1 to 200 mVhr
2 Static Water Penetration Test. (50pa to 1500pa) as per ASTME- 331-09 testing method for a range upto 2000 ml.
3 Dynamic Water Penetration (50pa to 1500pa) as per AAMA 501.01- 05 testing method for a range upto2001 ml
4 Structural Performance Deflection and deformation by static air pressure test (1.5 times design windpressure without any failure) as per ASTME-330-10 testing method for a range upto 50 mm
5 Seismic Movement Test (upto 30 mm) as per AAMA 501.4-09 testing method for Qualitative test, Teststo be conducted on site.
6 Onsite Test for Water Leakage for a pressure range 50 kpa to 240 kpa (35psi) upto 2000 ml
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