Number

R1

R2

R3

R4

R5

R6

R7

R8

R9

R10

R11

R12

Groove spacing/mm

23.15

23.15

23.15

23.15

23.15

23.15

23.15

23.15

23.15

23.15

23.15

23.15

Groove depth/mm

0.88

0.88

0.88

2.02

2.02

2.02

3.04

3.04

3.04

3.95

3.95

3.95

Bolt diameter/mm

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.40

18.64

/20.4

18.64

/20.4

18.64

/20.4

Anchorage length/mm

260

260

260

260

260

260

260

260

260

260

260

260

Temperature/˚C

22

22

22

22

22

22

22

22

22

22

22

22

Ultimate tension/kN

175.6

179.5

183.9

186.5

190.3

187.6

201.2

200.9

200.6

208.9

207.8

208.1