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To use the calculator, select slab shape to display side length inputs. Enter side lengths, footing dimensions,
concrete thickness (depth), total internal thickening length etc to calculate cubic metres of concrete needed.
Hit 'Demo' button to automatically pre-fill side lengths, foundation dimensions etc and calculate concrete volume.
Check 'Splay Internal Edges' to splay internal footing edges at 45° (see drawing)
Your iPad or Android Tablet is a valuable On-Site tool!
Lay your tablet on an angle to directly measure angles and automatically enter them into Roofing and Pitch Angle Calculator Apps.
If you've benefited from this free service, please consider a small donation to
The Fred Hollows Foundation - Help Change a Life
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Questions or Suggestions? ph: +61 7 40987645
ALWAYS CHECK WITH YOUR LOCAL BUILDING AUTHORITY BEFORE LAYING OUT
OR BUILDING ANYTHING
AND FOLLOW ALL LOCAL CODES. VERIFY ALL DIMENSIONS AND
ANGLES BEFORE CONSTRUCTION
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