It's in the catalog... http://www.rohnnet.com/rohnnet2001/catalog/html/gtowers.html allowable loads for bracketed tower http://www.rohnnet.com/rohnnet2001/catalog/pdfs/25G/25G-3.pdf self supporting loads for GT series http://www.rohnnet.com/rohnnet2001/catalog/pdfs/25G/25G-1.pdf