Delhi Development Authority Tender

Top Vent naturally ventilated polyhouse : 1) Bay Size: Preferably Length 18.0 m and Width 6.0 m (total 5 bay) 2)Central Ridge height: 4.5 m 3) Side Hieght: 3.0 m 4) Vents: The Ridge vent should have 80 cm and the side vent depending upon the requirement and opening should be fixed with 40 mesh UV stabilized MONO screen (IS : 16513-2016) 5) Column spacing: 3.0 m 6) Span: 6.0 m (Single span with top vent) 7) Structural Design :• The structural design needs to be sound enough to withstand wind speeds of a minimum of 100 km/hrs., and minimum load of 25 kg/ sq m. There should be a provision for opening one portion on either side for entry. • Complete Structure made of G.I. Pipe fitted. • All pipes should be pre galvanized/hot dip iron material, corrosion resistant and ISI mark. 8)Main Column: 60 mm OD class A confirming BIS standard IS: 1161-2019. 9) Middle column:60 mm OD class A confirming BIS standard IS: 1161-2019. 10) Foundation slab: 48 mm OD class A confirming BIS standard IS: 1161-2019. 11)Bottom Chord: 48 mm OD class A confirming BIS standard IS: 1161-2019. 12) Trusses member & Purlin: 48 mm OD class A confirming BIS standard IS: 1161-2019. 13) Purlin & Others:42 mm OD class A confirming BIS standard IS: 1161-2019. 14) Curtain pipe Handel and acessories: 21mm OD 15) Locking Profile:C type GI profile 250 GSM per MTR or above. Smooth edged in standard length of 4 MTR. with 2.3 mm high carbon steel zigzag spring to fix net & plastic film to the structure by means of self-tapping screws 16) Foundations: Telescopic in CC 1:2:4 (1 cement: 2 Sand: 4 stone aggregate 20 mm nominal size 15 x 15 x 45 cm) below ground level 17) Door:Size 900 mm G.I. frame covered with 200 Micron Poly sheet, double door hinged with poly sheet covering, locking arrangement 18) Cladding material:UV stabilized 200- micron (clear in hilly areas and diffused in plain areas) plastic films confirming to Indian standard IS 15827:2019), multi-layered, anti- drip, uniform light and have a minimum 85 percent of level of light transmittance. 19) Fixing of cladding materials:All ends/joints of plastic film need to be fixed with two-way GI profiles with suitable locking arrangements along with a curtain top. 20) Zigzag spring:Zigzag high carbon steel with spring action wire of 2-3 mm diameter must be inserted to fix the cladding material into GI Profile with overlap of 2-3 inch. 21) Curtain and Inspect screen: Roll up UV stabilized 200-micron transparent plastic film as curtains need be provided should be equal to height on all sides having manual opening 50 mesh white/green mono net of equivalent size need to be fixed inside the curtains. Anti-flapping strips are suggested to ensure the smooth functioning of the curtain (curtain open 1.5 meter for better ventilation and increased air circulation for temperature control). 22) Drip irrigation system:The drip irrigation system having drip line spaced at 50 cm x 30 cm V, with Disk/Screen Filter 10 cubic meter/hour, Control Valve, By Pass Assembly 1.5", Air Release Valve 1", Non - Return Valve 1.5", Throttle valve 1.5", Flush Valve 50 mm, HDPE PVC pipe 40mm/4kg/ Sq cm, Drip line 16 mm, and fittings and accessories. 23)Apron: Bottom Apron (Both sides across the length): UV stabilized skirting film 160 GSM, the apron plastic must be 1.0 m above the ground level and 0.5 m buried below ground level. 24) Water harvesting:Provision of Water Harvesting System (WHS) must be provided on double side of length to collect the roof top rain water, through HDPE/UPVC pipe.

Providing and placing on terrace (at all floor levels) polyethylene waterstorage tank, IS : 12701 marked, with cover and suitable lockingarrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank.

Demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of Engineer-in-charge In cement mortar