Standard Loads of Materials

Schedule of Permanent Loads commonly found in Residential Properties

Pitched Roof (Measured on slope)
Clay Tiles (Plain) 0.65 kN/m²
Clay Tiles (Interlocking) 0.45 kN/m²
Concrete Tiles (Plain) 0.75 kN/m²
Concrete Tiles (Interlocking) 0.45 kN/m²
Slates 0.35 kN/m²
Artificial Slates 0.25 kN/m²
Battens + Felt 0.05 kN/m²
Rafters 0.10 kN/m²

Pitched Roof (Measured on plan)
Timber Trussed Rafters 0.25 kN/m²
Ceiling Joists 0.10 kN/m²
9.5mm Plasterboard + Skim 0.15 kN/m²

Flat Roof – Asphalt Finish
2 Layer Asphalt 0.42 kN/m²
Felt 0.02 kN/m²
Boarding 0.10 kN/m²
Insulation 0.01 kN/m²
Joists 0.10 kN/m²
9.5mm Plasterboard + Skim 0.15 kN/m²

Flat Roof – Felt Finish
10mm Stone Chippings 0.14 kN/m²
3 Layer Felt 0.07 kN/m²
Boarding 0.10 kN/m²
Joists 0.10 kN/m²
Insulation 0.01 kN/m²
9.5mm Plasterboard + Skim 0.15 kN/m²

Timber Floor
Boards 0.10 kN/m²
Joists 0.15 kN/m²
12.5mm Plasterboard + Skim 0.20 kN/m²
Lath + Plaster 0.30 kN/m²

Precast Concrete Floor
65mm Screed 1.60 kN/m²
150mm Precast Concrete Floor 3.00 kN/m²
2 Coat Plaster 0.20 kN/m²

Walls
Sandstone 24 kN/m³
102.5mm Brickwork 2.00 kN/m²
Glazing 0.25 kN/m²
Render 0.30 kN/m²
2 Coat Plaster 0.20 kN/m²

Typical Design Loads Schedule.pdf