
REINFORCING & PREFABRICATION 






Shape Code  Total length of bar (L) measured along centre line 




π (Ad) + B
Where B is the overlap 




Cπ (Ad)
Where B is greater than A/5
this equation no longer applies,
in which case the following
formula may be used:
L = C ((π(Ad))² + B²)0.5
C = Number of turns 




A + 2B + C + (D)  2r  4d
Isometric sketch.
Neither C nor (D) shall be less
than P in Table 2 








