When the span of a single beam is 4m, the bay is not more than 3.6m, and there are no more walls and floors on it: concrete grade C25, reinforcement HRB400, section 200mm×300mm, upper lacing 2 φ 10, lower longitudinal reinforcement 2 φ 14, stirrup φ6@200.
The span of a single beam is 4m, and the bay is not more than 3.6m When there is a layer of wall and roof board on it, the cross section is 200mm×400mm, with 2 upper vertical rods φ 10, 3 lower vertical rods φ 16 and stirrup φ8@200.