I only see the span is greater than 4M of the beam arch height is 1/1000~3/1000, if that is 5m, 8m, 12M, 16m and even assuming 20m, the supply is only 1/1000~3/1000????
Span multiplied by 1/1000~3/1000, can not be so precise, the general is probably about two or three cm
4.4.6 on the span of not less than 4m of the beam, the plate, the height of the template arch should be the beam, plate span 1/1000~3/1000.
1, in order to prevent the concrete weight and construction load to other beam and plate template pendulous; if there is no design provisions, the arch height is the length of the cross beam and plate 1/1000~3/1000; (general wood template for 1.5/1000~3/1000; steel template for 1.5/1000~2/1000.)
