ABSTRACT
Place 675mm dia. shaft rings m/hr 1.00 0.30
Place 900mm manhole rings m/hr 0.60 0.20
Place 1200mm manhole rings m/hr 0.40 0.10
Place 1500mm manhole rings m/hr 0.30 0.10
Place 900/675mm tapers nr/hr 1.00 0.30
Place 1200/675mm tapers nr/hr 0.60 0.20
Place 1500/675mm tapers nr/hr 0.50 0.20
Place cover slabs to 675mm rings nr/hr 2.50 0.80
Place cover slabs to 900mm rings nr/hr 2.00 0.70
Place cover slabs to 1200mm rings nr/hr 1.40 0.50
Place cover slabs to 1500mm rings nr/hr 0.90 0.30
Build in pipes and make good base:
150mm dia. nr/hr 4.00 –
300mm dia. nr/hr 2.00 –
450mm dia. nr/hr 1.00 –
Benching 150mm thick m²/hr 1.20 1.20
Benching 300mm thick m²/hr 0.60 0.60
Render benching 25mm thick m²/hr 1.10 1.10
Fix manhole covers frame nr/hr 1.30 1.30
