Jan 2, 2007 #1 eriksasha Structural Apr 4, 2006 14 0 0 IE I'm trying to set up an excel spreadsheet for BS8100 concerning wind loading on masts but have not been able to find an equation for determioning Kr (terrain roughness factor). Does anyone out their know the equation?
I'm trying to set up an excel spreadsheet for BS8100 concerning wind loading on masts but have not been able to find an equation for determioning Kr (terrain roughness factor). Does anyone out their know the equation?
Jan 3, 2007 #2 Bagman2524 Structural Jul 14, 2005 706 0 0 US ASCE-07 has a topographical factor Kzt which is equal to (1 + K1*K2*K3)^2 (i.e square of everything in paranthesis). K1 is determined from a table that depends on exposure category K2 is (1 - !x!/uLh) K3 is e^(-yz/Lh) Upvote 0 Downvote
ASCE-07 has a topographical factor Kzt which is equal to (1 + K1*K2*K3)^2 (i.e square of everything in paranthesis). K1 is determined from a table that depends on exposure category K2 is (1 - !x!/uLh) K3 is e^(-yz/Lh)