PROVISION OF COVERED SHED FOR COMMON ASSEMBLY AREA AT P25 BUILDING CG ASSEMBLY AT CG ENCLAVE MALKAPURAM VISAKHAPATNAM UNDER GE (I) (CG) VIZAG

Excavating in trenches, n exc 1.5 m wide and n exc 1.5m in depth; for foundation, etc. or for shafts, wells, cesspits, manholes, pier holes, in cable tench etc. n exc 10 sqm on plan and getting out in soft / loose soil complete all as directed.

Excavating over area n exc 1.5m in depth and getting out in soft / loose soil complete all as directed.

M&L for sand filling under floors or in foundations including watering and consolidation for cushioning complete all as specified and as directed.

M & L for plain cement concrete 1:3:6 type C2 (using 40 mm graded stone aggregate) as in foundation filling and mass concrete complete all as specified and directed.

M & L for designing , providing fabricated , assembling and erection of pre stressed special Arch Membrane roofing structure with MS tubular frame work ( As per is structural steel ) in desired profile as per conceptual drawing with type II Precontraint as per manufacturing and supplying standards by Serge Ferrari /Mehler /Verseidag /Sioen . The membrane should confirm to the manufacturing and supplying standards by being pre stretched in both weft and weft direction manufacturing to perform best dynamic stability in both warp and warp direction with approved installers and manufacture for Arch roofing with and atleast two executed job reference in this connection. The fabric must be of HT polyester yarns 1100D tex coated with uniform 230 micron PVC coating over the polyester yarn . The top quote over the PVC must be of height concentration with easy clean availability and superior white pigmentation of the membrane . The dimensional stability of the fabric should be measure as per elongation test of 24 hrs - 10DAN / 5cm which should confirm < 1 % - < 1 % ( EN15977 ) and residual elongation should confirm < 0.4 % -0.4% ( EN15977 ) ensuring dimensional stability in both weft and warp direction , minimum weight should be 900 to 950gm per sqm (EN ISO 2286-2 ) , 4200/4000 N / 50mm ( EN ISO1421 ) and tear strength of 550 / 500N ( DIN53363 ) and with a guarantee of 10 yrs ( with non depreciating guarantee for first three years ) from the manufacturer , pole to pole spacing of the fabric should be as Arch drg , Plan area of covering used for Covered Shed Chargeable area will be fabric surface area inducing the measurement of the fitting used for fixing the civil drawing of foundation will be provided by the supplier and the foundation if any shall be made by contractor as per drawing produced by manufacturer. The wind pressure report along with foundation drawing shall be provided by the supplier / contractor for future reference as per direction of Engr - in - Charge approved by GE . Minimum design criteria of structure: Round pipe pillar 200mm dia, Rafter round 125mm dia, Connecting Rafter Pole to pole 125mm dia, Covered shed round pipe/ Purlin 75mm dia, Base plate 450x550 mm, SS plate and 25 mm dia. nut bolt , Gl wire rope for fabric , Deco Primer and Paint , 900 GSM Sione white Fabric ,complete all as specified and directed. (Note: Excavation, PCC work, Formwork, RCC work, TMT work and tubular truss will be measured and paid separately in relevant items.

Material and labour for steel work in tubular columns (273.0 x 6.3), bowstring arch trusses (top chord 139.7 x 4.85, bottom chord 114.3 x 4.5, webs 60.3 x 3.6), eaves beams, purlins and X-bracing using ERW/induction butt-welded tubes conforming to IS 1161 (Yst 240), including special-shaped washers, end caps and gusset allowance, fabrication, erection at all heights, complete anchor bolts M24 x 900 mm with nuts, washers and end plates, MS screw bolts, machine made, hexagonal heads, 11-15 mm dia, not exceeding 10 cm long (M12 connection bolts) with nuts and washers base plates (600 x 600 x 25), column cap plates, stiffener ribs, plain angle cleats and similar small articles conforming to Fe 290 (Grade E165). High tensile steel holding down anchor bolts 25mm dia (400-600mm long) with nuts and washers for column base plates (18 columns x 4) complete all as specified and directed.

S&F non shrink cementious grout 30mm thick under column base plate including shuttering and curing complete all as specified and directed.

S & F mild steel bands, straps, supports or stays of rain water, ventilating pipes including bolts, hooks (stay) for large gates, hook and pintel hinges, clamps, hold fasts, wall ties, flat iron fillets for securing wire mesh, wind tie, fan hook and similar work including necessary drilling bolting or riveting etc conforming to Fe – 290 Gde E – 165 complete all as specified and as directed.

S&F Mild steel screw bolts (machine made) 11 to 15mm dia with hexagonal or square heads at one end and screwed the other, or screwed both ends, each screwed end to be fitted with washers and one hexagonal or square nut, exc 5cm and n exc 10cm long complete all as specified and directed.

M & L for Preparation of new steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide, zine chrome primer complete all as specified and directed.