bids are invited for 1. supply and constr of def pds , 2. supply and constr of mmg bkr , 3. supply and constr of rl trench bkr , 4. supply and constr of rl trench bkr , 5. supply and constr of comn trench - supply & constr of pds of internal size 2.50m x 2.50m. pds consist of a fighting bay with one door and three loop holes. tech specification as per appx a and store details as per annx-1 & ii. supply & constr of mmg bunker of size (command area) 3.00m x 2.13m and entrance size 1.80m x 0.90m as per drgs att. tech specification as per appx a and store detalis as per annx-4 & ii. supply & constr of rl trench bkr of size 1432mmx1242mm with trapezoidal ends, open from top and rcc wall of 200mm thick as shown in drawing. flooring would be of 100mm thick pcc over 100mm thick hardcore, 2mm ms shutter lid of size 1900x1700mm fabiracted out of ms angle for cover to be provided. tech specification as per appx a and store details as per annx-1 & il supply & constr of comn trench. tech specification given in appx a and all dimensions as per drg. store list att as per annx-t total quantity : 316