The small dotted image shows the cross-section and the gray one shows the surface.
You need to divide it into six rectangular blocks, calculate their respective volumes, and sum them up. You get the volume as length*width*height. You get the width and height from the small view and length from the large one.
It seems symmetrical, so calculating three on one side and doubling the results also works.
Looks like a school assignment?
The simplest method would be to take the cross-section of the footing and multiply it by the number of meters.
That is, 350 x 250 x L
Then you add up all the volumes to get the total.
You get L from the drawing, but as stated, you have to be careful not to double-count the corners (i.e., you need to subtract 350mm either from the long sides or the short sides).
You can also think of the length as laying out the footing like a "sausage" and then you can use 350x250xLtot, where Ltot is the total length: Ltot = 2700+2700+2700+2700+(3035-350)+(3035-350)
It's also advantageous to use meters instead of mm (or dm if you want the answer in liters instead of m3)
Looks like a school assignment? The simplest way would be to take the cross-section of the sole and multiply it by the number of meters.
That is, 350 x 250 x L Then you add up all the volumes and get the total.
L you get from the drawing, but as stated, you must be careful not to count the corners twice (i.e., you must deduct 350mm either on the long sides or the short sides). You can also think of the length as if you lay out the sole as a "sausage" and then you can use 350x250xLtot, where Ltot is the total length: Ltot = 2700+2700+2700+2700+(3035-350)+(3035-350)
You can also use meters instead of mm (or dm if you want the answer in liters instead of m3)
Look at the geometry, you have two identical parts, calculate one and double it.
To calculate the area, it is easiest to calculate the entire area (outer dimensions) and then subtract the "hole" (the white part, inner dimensions are obtained by subtracting the sole's width given in the cross-section image as 350 mm). Once you have the area, multiply by the sole's height to get the volume (250 mm). Finally, multiply by 2 since you have now calculated half the sole. Calculate in meters as stated in the tip.
FredrikR said:
