Library

The ABIS library is a collection of useful reference material relating to buildings and their problems as well as timber pests such as termites.

The library is a combination of material written by ABIS as a result of our own research and practical experience together with useful information gleaned from other authoritative sources.

 

Stair Pitch

The Pitch is the angle between the pitch line and the horizontal where the Pitch Line is the line connecting the nosings of all treads in a flight of stairs. The slope or pitch of the stairs is the total rise divided by the total run or going (not the individual riser or treads due to the nosing) and is sometimes called the rake of the stairs. The pitch line is the imaginary line along the tip of the nosing of the treads.

WIKIPEDIA ENTRY FOR STAIRWAY.

Stair Pitch Picture