The common width-height relations used: —Width = 0.4 – 0.6 Height —Height = (width +1.2)m

General sizes used:

a) Residential

    External door – 1.0 x 2.0 to 1.1 x 2.0 m

    Internal door  – 0.9 x 2.0 to 1.0 x 2.0 m

    Bath & WC – 0.7 X 2.0 to 0.8 x 2.0 m

    Garages for cars – 2.25 x 2.25 m to 2.40 x 2.25 m

b) Public     1.2 x 2.0 m        or     1.2 x 2.1 m       or      1.2 x 2.25