강연선 Type 정착구 정착구 간격(최소거리) 보강철근
Ø12.7
mm
Ø15.2
mm
A
mm
B
mm
C
mm
중심간격
mm
끝단간격
mm
E
mm
F
mm
n
    
e
mm
1x12.7 1x15.2 170 170 1000 170/170 105/105 - - - -
3x12.7 3x15.2 220 360 1000 220/360 110/180 - - - -
4x12.7 4x15.2 230 430 1000 230/430 115/215 - - - -
5x12.7 5x15.2 280 280 1000 280/280 160/160 200 300 5 10
7x12.7 7x15.2 330 280 1000 280/330 160/185 200 300 5 10
9x12.7 9x15.2 280 380 1000 380/280 210/160 200 300 5 10
12x12.7 12x15.2 330 380 1000 380/330 210/185 200 300 5 12
15x12.7 15x15.2 380 380 1000 380/380 210/210 200 300 5 14
20x12.7 19x15.2 480 380 1000 380/480 210/260 200 350 6 14