Sight along beams to check for sag

Structure · Beams · printed page 48 (PDF page 49)

Original page Sign in to save

Book index entries

Sight Along Sagging Beam Structural

Text in the illustration

even with a mason's level, it can be difficult to determine if a beam is sagging by looking at it from the side
sighting along the bottom edge of the beam gives a much clearer indication of whether it's sagging
side view
perspective view

Generated explanation

The illustration shows side and perspective views of a wood beam spanning between brick masonry piers. A mason's level is placed against the underside of the beam in the side view, where slight sag is difficult to recognize. The perspective view exposes the beam's curved bottom edge along its span. The annotations recommend sighting along the bottom edge to obtain a clearer indication of beam sag.