suppose you have a gradient of (1:40) divide 1000mm by 40mm = 25mm
so for every meter run gradient fall by 25mm till you get to the invert level.
That's it.
If you are asking about the correct gradient. It is 1:40 (meters)
Drainage system
true
true
you * it by the length of your floor
How to calculate the net floor area when you know the gross floor area
Bricks, drainage pipes, insulators,floor tiles...
true
Usually the second floor.
How do I calculate floor space of 600 sqare meters, and how do I calculate 600 cubic meters
There are three levels, in the air, middle ground, or on the floor.
clogged drainage hole in the cowl (under the wipers)...