Recommended End Hooks All Grades of Steel

D = Finished bend diameter

 
Minimum length of bar, La(mm) to form a standard hook or cog
Type of Bar Min pin dia., d Bar diameter, db(mm)
6 10 12 16
Fitments:          
D500L & R250N bars 3 db 100 110 120 *
D500N bars 4 db 110 130 140 170
Reinforcement other than those below 5 db 120 140 160 180
Bends designed to be straightened or subsequently rebent 4 db 110 130 140 170
5 db * * * *
6 db * * * *
Bends in reinforcement epoxy-coated or galvanized either before or after bending 5 db 120 140 160 180
8 db * * * *

 

Minimum length of bar, La(mm) to form a standard hook or cog
Type of Bar Min pin dia., d Bar diameter, db(mm)
20 24 28 32 36
Fitments:            
D500L & R250N bars 3 db * * * * *
D500N bars 4 db 200 230 270 300 340
Reinforcement other than those below 5 db 220 260 300 340 380
Bends designed to be straightened or subsequently rebent 4 db * * * * *
5 db 220 260 * * *
6 db * * 330 380 430
Bends in reinforcement epoxy-coated or galvanized either before or after bending 5 db * * * * *
8 db 290 340 390 440 500