Masonry Wall Dead Load
Wall dead load = hollow (NCMA) weight + grout adder prorated by grout spacing (capped at full).
Example
You enter
- Hollow wall weight (psf, NCMA) 55
- Full-grout weight adder (psf, NCMA) 29
- Grouted-cell spacing at full grout (in; 8 CMU) 8
- Grout/rebar spacing (in; 0 = ungrouted) 48
- Wall height (ft, for line load) 10
You get
- Wall (psf) 59.83
- Line load 598 lb/ft
Details, formula, and sources
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.
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.
The NCMA TEK wall-weight tables (by unit thickness and density) are published free at ncma.org. The NCMA tables and the engineer of record govern.
Estimate. AHJ and licensed professional govern.
Field names used by the API: hollow_psf, grout_adder, cell_spacing, grout_spacing, height_ft, wall_psf, line_load_plf
- Grout proration grout_term = adder x (cell/grout spacing), capped at the full adder; 0 if ungroutedNCMA TEK
- NCMA weights hollow weight and grout adder from the NCMA table for the unit thickness/densityNCMA TEK tables
- Wall only the masonry wall dead load; no veneer/floor/roof loadsscope of this tile