Masonry Wall Dead Load

Wall dead load = hollow (NCMA) weight + grout adder prorated by grout spacing (capped at full). 8 in CMU, grouted 48 in o.c. -> 59.8 psf (598 lb/ft at 10 ft); fully grouted -> 84 psf, a 40% heavier wall. Line load and total from height/area. The NCMA tables and engineer of record govern.

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Formula and source

grout_term = grout_adder x min(cell_spacing/grout_spacing, 1) (0 if ungrouted); wall_psf = hollow_psf + grout_term; line_load = wall_psf x height; total = wall_psf x area.

The NCMA (National Concrete Masonry Association) TEK wall-weight tables and the grout-proration method, by name.

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