5.1 Appendix A: BSI Concrete Expansion Anchor Specifications

Note: The manufacturer's specifications for installing the anchor's must be carefully followed including hole diameter, depth of embedment and installation torque. Failure to follow the manufacturer's published instructions could result in significantly lower values of pull-out strength and overall performance.

Test Spec. References:

ASTM 488-90--Standard Test Methods for Strength of Anchors in Concrete and Masonry Elements

ASTM C 172-- Standard Method for Sampling Freshly Mixed Concrete

ASTM C 31 -- Standard Method for Making and Curing Concrete Test Specimens in the Field

Expected Minimum Ultimate Loads (lb.)

Concrete Strength(psi)

3000 4000
Anchor Size Tension(lbs) Shear(lbs) Tension(lbs) Shear(lbs) Installation Torque (ftlbs)
l0M 7200 12,000 8500 13,000 30-40
12M 9500 17,000 11,000 18,000 50-60
16M 17,000 30,000 20,000 33,000 65-80*

* Actual value used for testing was 105 ft-lbs.

Anchor Size Hole Depth(min) Hole Diameter
l0M 85 mm 15 mm
12M 100 mm 18 mm
16M 125 mm 24 mm

5.2 Appendix C: Anchor Individual Test Results

TENSILE TESTS

SIZE l0M

Test # Torque Pull-Out Strength (lb.) Failure Mode (ft-lb.)
Test 1 35 10,081 Concrete Shear Cone Failure (CSCF)
Test 2 35 9,198 CSCF
Test 3 35 8,436 CSCF
Test 4 35 9,700 CSCF
Test 5 35 8,609 CSCF
Test 6 35 8,955 CSCF

SIZE 12M

Test 1 65 11,969 CSCF
Test 2 55 10,705 CSCF
Test 3 55 10,081 CSCF
Test 4 55 10,358 CSCF
Test 5 55 10,097 CSCF
Test 6 55 11,675 CSCF

Size 16M (1045)

Test 1 90 19,383 CSCF
Test 2 90 16,870 CSCF
Test 3 90 14,740 CSCF
Test 4 90 16,438 CSCF
Test 5 90 15,538 CSCF
Test 6 90 15,520 CSCF

SHEAR TESTS

Note: The Shear test contained with the Belcore Technical Audit Report was transcribed incorrectly. Shear values represented here are from a typical internal shear test performed by the Boykin Anchor Company for grade 5 (1045) steel.

SIZE l0M (1045)

Test # Torque (ft-lb.) Shear Strength (lb.) Failure Mode
Test 1 35 10,012 Bolt Failure
Test 2 35 9,750 Bolt Failure
Test 3 35 10,046 Bolt Failure
Test 4 35 10,151 Bolt Failure
Test 5 35 11,069 Bolt Failure
Test 6 35 11,120 Bolt Failure

Size 12M (1045)

Test 1 55 14,256 Bolt Failure
Test 2 65 14,100 Bolt Failure
Test 3 65 15,278 Bolt Failure
Test 4 65 13,545 Concrete Failure
Test 5 65 14,914 Bolt Failure
Test 6 65 13,398 Bolt Failure

Size 16M (1045)

Test 1 90 28.450 Bolt Failure
Test 2 90 31,200 Bolt Failure
Test 3 90 29,760 Bolt Failure
Test 4 90 28,012 Bolt Failure
Test 5 90 29,944 Bolt Failure
Test 6 90 29,072 Bolt Failure