Self-supporting Roofs

In putting up, for instance, self-supporting roofs, or ceilings with wide spans, and steeples or towers, the bridge principle of trussed members should be understood.

The most simple bridge or trussed form is the well-known A-shaped arch.

Fig. 235. Fig. 235.

Sector And Segment Setting Door And Window Frames facebooktwittergoogle_plusredditpinterestlinkedinmail