Hello Everyone. I create a dummy beam with density=0 and E=0 (Figure.1) then I assign the beam (Figure.2) then Staad Error occurs( ***ERROR*** MATERIAL NAME MUST NOT CONTAIN ANY BLANK SPACE )(Figure.3), What is the solution?

Hello, I am modeling a floor slab (1 ft thick) with concrete beams (all 24" wide x 36" deep). These beams will be cast monolithically with the floor slab, therefore the beams are modeled as 24" deep. My question is how does STAAD determine the following…