John, Longer ago than I care to remember I attended lectures on building construction and remember that the fall needed for drainge was 1 in 400 for surface water, and 1 in 40 for sewage. The greater the fall the faster it drains, and I suspect the figures I have mentioned are minimum.
I hope this helps Anthony ----- Original Message ----- From: "John Carmichael" <[EMAIL PROTECTED]> To: "Sundial List" <[email protected]> Sent: Friday, March 08, 2002 7:08 PM Subject: Sundial water drainage > Hi All > > I'm designing a monumental horizontal sundial for the University of > California library in San Marcos. The face will probable be made from > concreter aggregate. Since it is in a high foot traffic area and will be > walked on, there is some concern about water puddling and people slipping > because the water will not drain off. I'm thinking that I could tilt the > face slightly and make it a reclining dial. > > Does anybody know the MIMIMUM amount of slope that would be needed for > drainage? I'm thinking that architects must have some set standard for > this. > > Thanks > > John > > John L. Carmichael Jr. > Sundial Sculptures > 925 E. Foothills Dr. > Tucson Arizona 85718 > USA > > Tel: 520-696-1709 > Email: [EMAIL PROTECTED] > Website: <http://www.sundialsculptures.com> > > - > -
