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Concrete Volume Calculator with Edge and Internal Beams
To use this calculator, first draw the shape of your concrete slab:
Starting at top left of slab plan, enter side lengths clockwise around slab (top left to right) and hit correct direction arrow to draw sides.
The diagram will re-size and re-scale to fit the slab diagram as it grows.
button to see how it works.
Hit Clear + Start
and enter Side Length of first side to draw, then hit appropriate direction (Arrow) button to draw.
You can also use cursor
◄ ▼ ►
keyboard keys instead of arrow buttons.
key = Undo Last.
Repeat and continue to draw complete (closed) slab shape. DO NOT overlap sides.
When shape is complete, it will fill with solid color. Enter Slab Thick, edge and internal thickenings if required, then click Calculate
To enter Side Lengths and draw diagram, enter length and use direction buttons (arrows) or keyboard cursor keys
◄ ▼ ►
to draw the side. Hit Q
to remove the last entered side, and C
to close the diagram.
You can enter multiple length sides in same direction, but cannot go back (against) the previous direction, cross or intersect any other side.
The current distance (X and Y) to start point is displayed below the Side Length entry. Draw a side at 1 of the lengths displayed to get back to a point horizontally or vertically
so you can close the diagram. If the last drawn side end is in line with the start point (not diagonal), hit C
to auto add the last side and close the diagram.
Clicking the X or Y entry will enter its length into the Side Length box. You can then hit the appropriate direction button and then C
key to close the diagram.
Check Splay Internal Edges
to splay internal footing edges at 45° (see drawing).
Left click in diagram, hold button down and drag to measure dimensions and area at full scale.
To fine tune Slider Controls click to select and use ◄ ►
(cursor) keyboard keys.
Open new window containing only diagram images in current page ↓ This will better fit printed page. Printing to Scale Help
Your iPad, iPhone or Android Tablet or Phone is a valuable On-Site tool!
Lay your phone or tablet on an angled surface (roof ?) to directly measure angles and automatically calculate Roofing
and Pitch Angle Apps
If you've benefited from this free service please consider a small donation to:
Starlight Children's Foundation
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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
Copyright © Greg Tarrant