Construction drawings of ceiling steel structure of a commercial street Construction drawings of ceiling steel structure of a commercial street include layout plan of embedded parts, layout plan of steel structure, side view, 3-3 section, axonometric drawing, sectional drawing of member, node number drawing, node detail drawing, etc., for your reference! The ridge height of the project is 28.925m, and the cornice elevation is 22.65m. The safety level of steel structure of daylighting roof is