Mortar Mix and Yield
Bags of mortar mix from brick / CMU count and joint thickness.
Example
You enter
- Unit count 600
- Unit kind brick
- Joint thickness (in) 0.375
- Mortar type N
You get
- Bags of mortar mix 20
- Joint factor 1
Checked against published worked examples from: PCA.
Details, formula, and sources
Formula or tableBag yields per PCA / NCMA: 1 bag (94 lb Type N) yields ~3.0 ft³ mortar; joint volume from joint_thickness × wall_area_per_bag; brick / 8-inch CMU joint-thickness adjustment.
Source and editionPCA (Portland Cement Association) Design and Control of Concrete Mixtures by name; ASTM C270 mortar specs by name.
Free accessPCA / ASTM licensed; engineering-practice yield values free in published trade references.
What governsEstimate. AHJ and licensed professional govern.
API field namesunit_count, unit_kind, joint_in, mortar_type, bags, joint_factor
- Mortar type yield Type N: 94 lb bag → 3.0 ft³ per PCA TablePCA