bids are invited for boq total quantity : 1--1 single-tier sleeping bunks. prefabricated single sleeping bunk made of ms hollow section of size 25 mm x 25 mm x 2.65 mm thick and angle iron of size 40 mm x 40 x 5 mm nos 52 sketch ‘a’ jindal / prakash surya conforming to is 1038-1983 and hsn code 940320 2 two-tier sleeping bunks :ms pipe two tier sleeping bunks a detachable ladder made up with 20 mm ms pipe with four steps to be provided in each bunk. male / female ms rectangular box of size 40 mm x 25 mm x 75 mm long to be welded, two side protector bars of 15 mm dia ms pipe on top bunk to be welded as per details shown in drawing. the outer size of the bunk will be 1970 mm x 950 mm horizontally and 1775 mm x 950 mm vertically. the bunk should have provision to place a removable type mattress of size 1830 mm x 910 mm to angle iron frame with adequate holes pre drilled in the frame should have central support of 40 x 6 mm of flat iron as per shelter. nos 110 sketch ‘b’ 3 sleeping bunks folding type double decked bunk of size 1830 x 910mm with cushion made of 100mm thick puff foam of denacity 40 kg / cum as applicable of size 1830 x 910mm to provided with each bunk ( removable type ) . 12mm thick plywood of make kitply / national of size 1830 x 910mm to be fixed to bed with suitable fasterners the puff foam is to be provided with standerd quality rexene cover of olive green colour to be provided.