Provision of new roofing Sheets on terminal building, Fire station building and other allied structures at Shimla Airport

Amount

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-Charge) of total coated thickness 0.50mm (base metal of minimum 0.45mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and laying water proofing treatment on roofs of slabs by applying cement slurry mixed with water proofing cement compound consisting of applying: (a) after surface preparation, first layer of slurry of cement @ 0.488 kg/sqm mixed with water proofing cement compound @ 0.253 kg/sqm. (b) laying second layer of Fibre glass cloth when the first layer is still green. Overlaps of joints of fibre cloth should not be less than 10 cm. (c) third layer of 1.5 mm thickness consisting of slurry of cement @ 1.289 kg/sqm mixed with water proofing cement compound @ 0.670 kg/sqm and coarse sand @ 1.289 kg/sqm. This will be allowed to air cure for 4 hours followed by water curing for 48 hours. The entire treatment will be taken upto 30 cm on parapet wall and tucked into groove in parapet all around. (d) fourth and final layer of brick tiling with cement mortar (which will be paid for separately). For the purpose of measurement the entire treated surface will be measured.

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete. Hot finished seamless type tubes

Painting with synthetic enamel paint of approved brand and manufacture of required colour to give an even shade : Two or more coats on new work over an under coat of suitable shade with ordinary paint of approved brand and manufacture

Dismantling wooden ballies in posts and struts including stacking within 50metres lead.

Demolishing clay tile covering in terracing including demolshing of mortar and disposal of unserviceable material within 50 metres lead.

Dismantling roofing including ridges, hips, valleys and gutters etc., and stacking the material within 50 metres lead of: CGI Sheet

Deduct for taking away of wooden balli/battens. The material so received shall be the property of contractor after dismantling duly weighed/ measured before removing from the site in the presence of Engineer-in-charge or his authorised representative all complete. The payment will be made on the basis of actual weight measured at site.

Deduct for taking away of CGI Sheet. The material so received shall be the property of contractor after dismantling duly weighed/ measured before removing from the site in the presence of Engineer-in-charge or his authorised representative all complete. The payment will be made on the basis of actual weight measured at site.

Providing complete structural design and drawings for fixing of precoated galvanised iron profile sheets of total coated thickness 0.50mm over steel frame on the existing RCC roof of terminal building, fire station, substation etc. as per direction of Engineer-in-charge. The item includes design of steel frame work with adequate size and thickness and installation of profile sheet above the frame work with complete details form reputed agency ascertain safe bearing capacity, preparation of preliminary sketches, structural design etc. as per relevant IS code and provide at least three sets of good for construction structural drawings for the same. Note: 1). Structural design drawing shall be vetted from IIT/NIT, Govt. Engg. College and copies to be submitted to Engineer-in-charge before actual execution of work. 2). Prior approval of Engineer-In-charge shall be taken before engaging the structural consultant and agency for soil investigation works. 3). Total area of terminal building is approx. 1150 sqm, Total area of fire station is approx. 1000 sqm, Total area of substation is approx. 130 sqm. and Total area of other allied structures is approx. 200 sqm.

JAI BALAJI CONSTRUCTION COMPANY (BID ID -834262)

kailash chawla (BID ID -833934)

M/S M L BROTHER (BID ID -831602)

SABUR ALAM (BID ID -834606)

M/S MEHRAJ UD DIN RATHER (BID ID -832745)

SHARMA CONSTRUCTION CO (BID ID -834092)

shubhom prefabs and associates (BID ID -834149)