ABSTRACT
NOTES The cost of precast concrete items is very much dependent on the complexity of the moulds, the number of units to be cast from each mould and the size and weight of the unit to be handled. The unit rates below are for standard precast items that are often to be found on a civil engineering project. It would be misleading to quote for indicative costs for tailor-made precast concrete units and it is advisable to contact Specialist Manufacturers for guide prices. BEAMS Concrete mix C20 Beams 100 x 150 x 1050 mm long 1.00 5.74 - 12.15 nr 17.89 225 x 150 x 1200 mm long 1.00 7.99 1.90 35.16 nr 45.05 225 x 225 x 1800 mm long 1.00 10.20 3.96 62.41 nr 76.57 PRESTRESSED PRE-TENSIONED BEAMS Concrete mix C20 Beams 100 x 65 x 1050 mm long 1.00 3.22 - 6.09 nr 9.31 265 x 65 x 1800 mm long 1.00 4.03 2.53 22.96 nr 29.52 Bridge beams Inverted 'T' Beams, flange width 495 mm section T1; 8 m long, 380 mm deep; mass 1.88t - - - - nr 755.18 section T2; 9 m long, 420 mm deep; mass 2.29t - - - - nr 904.66 section T3; 11 m long, 535 mm deep; mass 3.02t - - - - nr 1061.98 section T4; 12 m long, 575 mm deep; mass 3.54t - - - - nr 1179.99 section T5; 13 m long, 615 mm deep; mass 4.08t - - - - nr 1219.32 section T6; 13 m long, 655 mm deep; mass 4.33t - - - - nr 1219.32 section T7; 14 m long, 695 mm deep; mass 4.95t - - - - nr 1415.97 section T8; 15 m long, 735 mm deep; mass 5.60t - - - - nr 1533.98 section T9; 16 m long, 775 mm deep; mass 6.28t - - - - nr 1651.99 section T10; 18 m long, 815 mm deep; mass 7.43t - - - - nr 1848.65 'M' beams, flange width 970 mm section M2; 17 m long, 720 mm deep; mass 12.95t - - - - nr 4011.94 section M3; 18 m long, 800 mm deep; mass 15.11t - - - - nr 3775.94 section M6; 22 m long, 1040 mm deep; mass 20.48t - - - - nr 6057.25 section M8; 25 m long, 1200 mm deep; mass 23.68t - - - - nr 7866.56 'U' beams, base width 970 mm section U3; 16 m long, 900 mm deep; mass 19.24t - - - - nr 6765.23 section U5; 20 m long, 1000 mm deep; mass 25.64t - - - - nr 8653.21 section U8; 24 m long, 1200 mm deep; mass 34.56t - - - - nr 11721.19 section U12; 30 m long, 1600 mm deep; mass 52.74t - - - - nr 16047.79
Item
Gang hours
Labour £
Plant £
Material £ Unit
Total rate £
SLABS Prestressed precast concrete flooring planks; Bison or similar; cement mortar grout between planks on bearings 100 mm thick floor 400 mm wide planks 0.21 11.03 6.82 38.30 m2 56.15 1200 mm wide planks 0.12 6.15 3.80 39.40 m2 49.35 150 mm thick floor 400 mm wide planks 0.26 13.79 8.53 38.30 m2 60.61 1200 mm wide planks 0.14 7.69 4.75 39.40 m2 51.84 SEGMENTAL UNITS COPINGS, SILLS AND WEIR BLOCKS Concrete mix C30 Coping; weathered and throated 178 x 64 mm 1.00 7.29 4.72 22.48 m 34.50 305 x 76 mm 1.00 5.48 3.37 17.13 m 25.98
