A client of ours is considering covering most of his (150,000 sq.ft.) flat warehouse roof with solar collector panels. The building is in Toronto, Canada and the roof live load in this area is for about 20" of snow. The base of the panels are 1'-0 off the roof and they are sloped at 45 degrees...
I am designing a 500,000 sq.ft., 70'-0 high single storey steel framed 'big-box' warehouse facility. Plan dimensions will be 770'-0 x 650'-0. I intend to provide a roof expansion joint cutting the 770'-0 dimension in half but am wondering about the merit's of a second, perpendicular, expansion...
