supply of pre-fabricated steel tubular bc 3/1 structure of size 3.60mtr x 2.40mtr (including 0.90 mtr wide verandah). height at front side and rear side 2.10mtr and 2.7mtr gable height (set of three cubical of size 1.50mtr x 1.20mtr each) all as per hq 15 corps drg no 3534/bc 3/1/001/sheet 1/3,2/3and3/3 attached as per appendix (sheet-1,sheet-2 and sheet -3 ).