Example: a drain pipe with a diameter of 110mm, surface. diameter 95cm², could therefore drain a horizontal surface of approximately 100m² (in case of heavy rainfall).
A tube of 160mm, opp. diameter 201 cm², would therefore be appropriate for a horiz. area of about 200m².
Is this correct?
How did you arrive at this formula?
Several experts (architects, engineers, insurance,..) have used this rule of thumb in our apartment building.
Answer
When I do a classical calculation for a given surface to determine the necessary diameter of the sewer pipe, I always find a smaller diameter than the one obtained with the rule of thumb.
This rule of thumb therefore comes from practical experience, in my opinion, whereby one can be sure that with the obtained diameter even very heavy precipitation can be discharged, provided that this rule is applied.
Best regards
Answered by
Prof. dr. dr.ir. Ronny Verhoeven
hydraulics, water management, sediment transport, water transport
http://www.ugent.be
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