【问】我有一个问题请教,就是每米螺旋箍筋长度不知应如何计算?我曾在一些杂志上找到了每米螺旋箍筋长度表(见表1),但螺距到9厘米为止,当遇到大于9厘米的螺距时,我便用螺旋公式(1)l=n(p~2+π~2d~2)~(1/2)(式中l为螺线长,p为螺距,d为直径,n为螺旋的数)计算,并用螺旋公式(2) [Q] I have a question to ask, is the length of spiral stirrups per meter I do not know how to calculate? I have found in some magazines per meter length of spiral stirrups (see Table 1), but the pitch to 9 cm so far, when When the pitch greater than 9 cm is encountered, I use the spiral formula (1) l=n(p~2+π~2d~2)~(1/2) (where l is the length of the spiral and p is the pitch, d is the diameter, n is the number of spirals), and the spiral formula (2)