Providing double skin insulated roofing and conversion of Single sheet roofing into double skin roofing false ceiling etc at CISF camps and other buildings inside the BARC Trombay Mumbai

Amount

Providing and fixing lay in false ceiling 600 x 600 mm perforated corrosion resistant Aluminium magnesium alloy metal panel fixed in 24 mm 'T' frame work of module 600 x 600 mm. Panels shall be manufactured of size 575 mm x 575 mm with perforation of 1.50 mm dia in a 3 diagonal square pattern giving 22% perforated area of approved colour in 0.70 mm thick Aluminium alloy 3105 with square edges Tiles to be stove enamelled on a continuous application for pre-treatment. The coils to be go through 4 stages of pre treatment three times of oven baked through conversion coating, priming and finish coat ensuring superior adhesion, high corrosion resistance and good colour stability.The coils to be painted on both sides after degreasing. inside surface to have a primer of 5 microns and a coat of natural colour of 5 microns, exposed surface to have a primer of 5 microns, binder of 5 microns and a top coat of approved colour 15 microns. Grid system for fixing ceiling tiles shall comprise of tees. The 24mm main tee runers shall be suspended at an interval of 1200mm centre to centre. The 24mm cross tee runner shall be suspended at an interval of 600mm centre to centre and further supported with 24mm cross tee with inter locking arrangements to form a Grid of 600mm x 600m. The main tee shall be supported by means of 4mm G.I.rod from slab / roof. The suspension shall be provided at 1200 to 1500mm centre to centre.provision for lights, diffusers etc. to be made including extra supports wherever necessary. A non-woven felt made of glass reinforced fibre glued oner the perforation for sound absorbtion Measurements shall be as per actual area of false ceiling with out deductions for lights and diffusers. Tentative/Suggested make for the guidance of bidders: "LUXALON" make of M/s Hunter Douglas or approved equivalent.

Providing and fixing double tubular scaffolding system using H- frames with cup lock type on the exterior side upto seven story height made with 40 mm dia M.S. tube 1.5 m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S. tube challies, M.S clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with building etc. wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and as approved by the Engineer -in - charge. The elevational area of the scaffolding shall be measured for payment purposes. The payment shall be made once irrespective of duration of scaffolding.

Dismantling roofing including ridges, valleys and gutter etc and stacking the material within 50 m lead. AC Sheet

Dismantling cement asbestos, Celotax or other hard board ceiling or partiton walls including stacking of serviceable materials and disposal of unserviceable materilas within 100 m lead

Providing and fixing precoated Galvalume roofing accessories using self drilling / self tapping screws or with polymer coated J or L hooks, bolts and nuts and or G.I. seam bolts and nuts, G.I. plain and bitumen washers complete. Roofing accessories of galvalume sheet above 600mm total width up to 1200 mm for ridges, gutters, aprons and flashings.

Supplying, fabricating, testing, transporting, handling and erecting at required positions and levels metal roofing and canopy roofing including flashings and insulation etc. as per approved drawings and design complete as directed by the Engineer-in-charge including all consumables comprising of the following: Double skin insulated standing seam roofing system comprising of 0.50 mm thick colour coated / bare Al-Zinc Alloy coated steel 0.50 mm with overall width of 400 to 500mm by seaming for 100% water tightness on outer face and 0.50 mm thick inner linear sheet with galvalume sheet profile and physical material properties as specified. These sheets shall be fixed on specially reinforced polyamide or acetylyte anti friction di electric brackets at every location for permitting unhindered, free sheet movement at all required locations. The profile shall have a special in built drainage joint at side laps to make it fully watertight even in fully submerged condition. It shall have overall depth of 100 mm from horizontal after fixing . The side laps shall be of interlocking type without requirement of any mechanical seamer. Insulation: This shall be comprising of two layers of rockwool insulation each of 50 mm thick with density of 48 kg / Cu. M. Sub Grit (Top Hat) 1.5 mm thick Glavanised steel hat section fixed to main purlins, above first layer of insulation, to support the aluminium sheets. Inner linear sheet of 0.50 mm nominal TCT of physical material properties as specified. Vapour Control layer : The vapour contol layer to reduce the movement of water vapour from inside the building through the roof construction to reduce the risk of condensation shall consists of 3 layer membrane to be laid continuous across its surface shall be fully sealed at laps, perimeters, penetrations to ensure effectiveness & aluminium foil of 0.50mm thick laid over insulation board.

Supplying, fabricating, testing, transporting, handling and erecting at required positions and levels metal roofing and canopy roofing of approved make including flashings and insulation etc as per approved drawings and design including all consumables and taxes comprising of the following: Providing and fixing of top sheet and insulation layer on double layer roofing system comprising of 0.60 mm thick (Bottom sheet already fixed at site at position) Galvalume alloy comprising of profile sheeting manufactured from Galvalume sheet and physical material properties as specified. These sheets shall be fixed on specially reinforced polyamide or acetylene anti-friction di-electric brackets at every location for permitting unhindered, free sheet movement at all required locations. The profile shall have a special in built drainage joint at side laps to make it fully watertight even in fully submerged conditions. It shall have overall depth of 50 mm from horizontal after fixing and 550 mm covered width. The side laps shall be of interlocking type with requirement of mechanical seamer. Cost including if any ridge sheet required, shall be provided. Note: (i) Top sheet 0.60 mm thick colour coated Galvalume sheet metal roofing/Screwless Fixing System. (ii) Bottom/inner lining sheet already fixed at site. (iii) Insulation: This shall be comprising of 100 mm thick Rockwool insulation with aluminum foil each of 50 mm thick with density of 48 kg/cum Over a vapor barrier (Three layers of Aluminum foil). (iv) Sub Grit (Top Hat) 1.5 mm thick Galvaised steel hat section fixed to main purlins, above first layer of insulation, to support the aluminum sheets. (v) Top sheet of 0.60 mm thick physical material properties as specified.

Supply and fixing of Ridge, Cap flashings, Apron flashings, barge Board etc wherever required as per manufacturers recommendation wit material as per above specifications. All girth of the flashings shall be ranging from 0 to of 3000 or 6000 mm only.

up to 600mm girth in standard length or as per design requirement.

Supplying unskilled man power along with necessary tools, machines etc. when decided by Engineer-in-charge to work for eight hours ( excluding lunch ) per day to carry out the repairs of furniture and other departmental work allotted by Engineer-in-charge.

vikas construction

S.V ASSOCIATES

RESHMA CONSTRUCTION