Calculations we provide
- Foul flow calculations and pipe/gradient design
- Surface water runoff (including greenfield rates) and restricted discharge
- Attenuation storage sizing for storm events, including climate change allowances
- Infiltration design from percolation test results
- Hydraulic checks of existing systems taking new load
Presented for approval
Calculations only help if the approving body accepts them. Ours are presented with the drawings, levels and supporting information reviewers expect - whether that's a Building Control officer checking an extension's drainage or a flood authority scrutinising a development's discharge rate.