Encyclopedia of Anchoring (CA06114E)

BOLT SHEAR STRESS vs. INSTALLATION TORQUE 10,000 FT. -LB. TOOLING 5-¼ INCH BOLT CIRCLE

Bolt Shear Stress (PSI)

60,000

Minimum Yield in Shear for Grade 5 Bolt

55,000

50,000

45,000

B

40,000

35,000

Note: The shear strength for a Grade 5 bolt (52,400 psi) is reduced under the following conditions:

9,000 10,000 11,000

12,000 13,000 14,000 15,000

INSTALLATION TORQUE (FT.-LBS.)

Based on SAE J429 Gr. 5 ½” Bolts

BOLT SHEAR STRESS vs. INSTALLATION TORQUE 15,000 FT. -LB. TOOLING 7-⅝ INCH BOLT CIRCLE

Bolt Shear Stress (PSI)

50,000

40,000

30,000

6-Bolt Pattern

20,000

12-Bolt Pattern

10,000

0 11,000 12,000 13,000 12,000

15,000 16,000

INSTALLATION TORQUE (FT.-LBS.)

Based on SAE J429 Gr. 2 ⅝” Bolts

High-strength Kelly bar adapter. Socket lengths 7 - 8 ⅛ ”.

Standard-strength Kelly bar adapter. Socket lengths 3 ½ - 8 1 ⁄8”.

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B-91