blocklayer.com Directory 👈 Inch or Metric Search by Image


Concrete Block Gable Cutting Calculator - Cut and number all blocks before laying - Match off-cuts

Length
Angle Calc Angle
Type
Bond
Beams
1st Height first height (H1) of first cut in rake - no bed joint. Alter this slightly to get more matches
Settings Colour

Gable Type

Calculate all the cut block dimensions in a raking wall, matching the off-cuts and positioning the bond beams ( if any ) for easy placement of vertical reinforcing steels (droppers). This system is very accurate and extremely fast, compared to the old 'stick and string' method. By slightly altering the height of the rake, you can optimize off-cut matching, often saving half your cutting. Enter length to apex, angle, corner / end type, bond and bond beam specifications to generate a cut sheet listing all the blocks in the rake.

The diagram above will display the selected end, corner, bond and bond beam settings.

Mark and cut the blocks first, numbering cut and off-cut. Then it's easy to lay the blocks up the rake by number.

The cut sizes are very accurate, so it's easy to keep the rake line straight without a string line. If you can't build the high end corner to the top of the rake, for the line, it's better not to use one. As ascending courses have less perp joints, the rake will center itself if you keep bond.

Just keep gauge and bond and you'll be amazed how straight and accurate the rake ends up. With 2 bond beam courses, the second course bond is staggered forward, so the core centres line up vertically, allowing easy placement of vertical reinforcing steels.

Repeating sets With a plain rake (not corner up) if you can alter the angle and starting height of your rake, you can optimize offcut matching, and use repeating sets of same size cuts, sometimes with just 1 cut size for the entire rake.

This makes marking and cutting much faster, because there are only a few different size cuts in the whole rake, and they repeat.

These are some angles and starting heights with matching sets. Select an entry to re-calculate the rake.

Repeating Sets


Circular Raking Walls with Arch or Bullseye You can combine this Gable Cutting System with the Circular Wall System to easily build curved or circular raking walls. Neither system requires a string line, so they combine easily. You can also use the Templateless Arch System to build arches or bulls-eyes in your circular raking wall. If you'd like more detailed info, please contact us ( ph: Australia +61 7 40987645 )





DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray too!

How should we spell it?



Results


Built something using our calculators? Please Send Photos! See examples

Blue Dragon Childrens Foundation If you've benefited from this free service please consider supporting Blue Dragon Children's Foundation



Please help promote this free service - Tell a Friend about this site!

Create PDF to print diagrams on this page. Help & Settings Printing Help (new window)

Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare.

View page on Phone via QR Code (Not current calculation result)

Contact Us

blocklayer.com calculators

All calculators on this site are geometric only.
Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.


Disclaimer   |   Privacy & Cookie Policy

Copyright © 2020 - blocklayer.com
Zoom 100%
?


Keyboard
Fine tune Sliders




Printing Help
Help - Settings

Share

↑ Remove Margins
Jump to Top ↑

blocklayer.com calculators

If you've benefited from this free service please consider supporting
Please help us support Blue Dragon Children's Foundation Built something using our calculators? Please Send Photos!
See examples

Jack up
longLength of block no joint DiscardSmallDon't include blocks under this height
highHeight of block no joint Min Cut offDon't include blocks with less than this cut off
jointsize of joint   Match to the closest off-cut or the F away
Match+Accept matches up to this much higher Match -Accept matches up to this much lower
  Soft Metric 8" Reset 200 Close