Masonry corner bond cut list calculator

Calculate per-course cut sequence and cut length quantities [mm,count] with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use per-course cut sequence and cut length quantities [mm,count] to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

JSON Approved course pattern [course ID,finished wall run mm,corner-prefix piece lengths mm]
[["course1",2000,[215]],["course2",2000,[102.5,215]]]
Full brick unit length (mm)
215
Specified vertical joint (mm)
10
Per-course cut sequence (mm)
[["course1",[215,215,215,215,215,215,215,215,200]],["course2",[102.5,215,215,215,215,215,215,215,215,87.5]]]
Cut length quantities [mm,count]
[[87.5,1],[102.5,1],[200,1],[215,16]]
Total brick material length (mm)
3830

Try another scenario

JSON Approved course pattern [course ID,finished wall run mm,corner-prefix piece lengths mm]
[["course1",2200,[215]],["course2",2200,[102.5,215]]]
Full brick unit length (mm)
215
Specified vertical joint (mm)
10
Per-course cut sequence (mm)
[["course1",[215,215,215,215,215,215,215,215,215,175]],["course2",[102.5,215,215,215,215,215,215,215,215,215,62.5]]]
Cut length quantities [mm,count]
[[62.5,1],[102.5,1],[175,1],[215,18]]
Total brick material length (mm)
4210
Calculation method

Calculation method

Per-course cut sequence (mm)

Subtract supplied corner prefix and its joining joints; fill full units then a positive final edge cut, accounting joints.

Cut length quantities [mm,count]

Aggregate equal cut lengths across courses.

Total brick material length (mm)

Sum all cut lengths excluding joints.

Symbols and units
a
JSON Approved course pattern [course ID,finished wall run mm,corner-prefix piece lengths mm]
b
Full brick unit length (mm)
c
Specified vertical joint (mm)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Derives full-unit and residual cuts after an explicit externally approved per-course corner prefix. User must provide correct bond prefix/thickness detail; no bond standard invented. Supported limits: Up to 100 courses; run>0, 0≤joint<unit, maximum 10000 cut pieces.
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