I am on a project where the contractor installed a trapeze strut rack for conduit. The rack is made from 3/8 inch all-tread, 3/8 inch mallable iron beam clamp, 108 inch piece of 1-5/8 by 1-5/8 inch 14 gauge slotted strut bolted in two places to a 108 inch 7/8 by 1-5/8 inch 14 gauge slotted strut. The rack is carrying 4-3 inch emt, 1-4 inch emt, 5-2 inch emt, 3-1-1/4 emt and 12 3/4 inch emt. The rack is already bowing in the middle without cable. What are the problems with this trapeze?