Help in finding the weight an I section can hold
Hi, Not too sure how to even ask the question but shall explain what I am trying to do. I need to place a water tank on a I section frame. I need to know the size of I sections I must use. My frame will be 7ft by 12ft (as I am putting on existing posts). I will be laying 2, 12ft I sections on posts and lay 3, 7 ft I sections perpendicularly. I will have a steel plate on the structure and keep a water tank. Total weight on structure will be 1800kg. My current plan was to use 6inx3in I sections but they are very expensive and want to see if I can use a smaller size. Please help in either calculating the correct size or even better if someone can tell me the size I should use. Thanks.