Materials & Quantities

Masonry, brick & block

Anything laid in courses and bedded in mortar or grout.

  • 39Calculators
  • 36Work in imperial
  • 36Work in metric

What this covers

Brick, block and stone counts; mortar and grout volumes; CMU cell and bond-beam fill; arches, lintels and parapets; wall ties and veneer support; and the checks a masonry wall has to pass — prism ratio, shear, pier capacity, equivalent thickness.

What decides which one you need

Whether the unit is carrying load or covering something that is. A veneer is an estimating problem — area, unit size, waste, ties. A loadbearing wall is a capacity problem, and those calculators ask for the mortar type, the unit strength and the grouting pattern because the answer changes with all three.

What this does not cover

The render or stucco over it, which is cladding; block paving laid on sand, which is paving; and the footing under it.

Every calculator in this family

39 calculators

Brick Calculator

Estimate how many bricks and how much mortar you need for a wall, calculated dynamically from your brick size and mortar joint width.

Imperial / Metric

Brick Movement Joint Spacing Calculator

How many vertical movement (expansion) joints a straight run of clay brickwork needs at a maximum spacing, where they fall, and the sealant they take.

Imperial / Metric

CMU Equivalent Thickness Calculator

Compute a hollow CMU block's equivalent (solid) thickness, a key input to fire-resistance rating and thermal analysis tables.

Imperial / Metric

Fireplace Hearth Size Calculator

The smallest non-combustible hearth: the IRC's extension for a masonry fireplace, or Approved Document J's constructional hearth for a recess or a stove.

Imperial / Metric

Fireplace Mantel Clearance Calculator

How far a combustible mantel or trim may stand out at a set distance from a masonry fireplace opening, and the least distance for its depth, by the IRC.

Imperial / Metric

All of Materials & Quantities