Curved Guardrail Data

R-mm

oc

c
Approx
mm

H
Approx
mm

6000

38° 11'

3926

333

7500

30° 33'

3953

265

9000

25° 27'

3966

221

10500

21° 49'

3974

188

12000

19° 06'

3980

166

13500

16° 58'

3984

148

15000

15° 16'

3987

133

16500

13° 53'

3989

121

18000

12°44'

3990

111

20000

11° 27'

3992

100

22500

10° 11'

3993

89

25000

9° 10'

3994

80

27500

8° 20'

3995

73

30000

7° 38'

3995

67

35000

6° 33'

3996

57

40000

5° 44'

3997

50

45000

5° 6'

3997

44

Mechanical and Physical Properties

Area of Cross Section

1305(mm)²

Moment of Inertia - Horizontal

.98x10⁶(mm)⁴

Moment of Inertia - Vertical

12.70x10⁶(mm)⁴

Section Modulus - Horizontal

2.28x10⁴(mm)³

Section Modulus - Vertical

8.16x10⁶(mm)⁴

Quantities

A. Guardrail

Divide length of barrier (metres) by 4 to determine the number of rails required

B. Posts

Multiply the number of rails by 2 and add I unit per run.

C. Blocks

Number of blocks is equal to the number of posts.

D. Stiffeners

Number of stiffeners is equal to the number of rails.

E. Terminal
    Ends

Provide I terminal end at each end of barrier

F. Splice Bolts
    M16x32

Multiply the number of rails by 8 then add 8 units per length of run

G. Block Bolts
    M16x35

Multiply the number of blocks by 2.

H. Rail Bolts
    M16x50

Same quantity as posts.

1. Rectangular
    Washers

Same quantity as posts.