The five most important points for the design of glass canopies
1. Did you know that the loads on canopies are often much greater, even twice as great, than the loads on roofs? Snow loads on the roof vary by location, but can be around 60 lbs per square foot. Therefore, loads can reach up to 120 lbs per square foot for some awnings due to snow being blown off the roof by the wind. 2. With such high loads, anchors are often a weak point. In most cases, 4 fixings (one at each corner) will not be sufficient. Depending on the size of the glazing and the loads, it is sometimes necessary to have 8 point fixings and sometimes even more . Make sure the fixings can handle the loads. 3. Also make sure that the fixing system (spider arm+omega) can take the movements and tolerances of the structure Spider arms should have fixed points (fixed holes), slotted/expanding points (oblongs) and free points (oversized). Note: These holes are only for expansion. Tolerances in the glass and structure should be addressed using a separate element (omega). 4. I've men...