Code of Massachusetts Regulations
780 CMR - STATE BOARD OF BUILDING REGULATIONS AND STANDARDS
Chapter 19 - Concrete
Section 1911 - ANCHORAGE TO CONCRETE- ALLOWABLE STRESS DESIGN
Subsection 1911.2 - Allowable service load

Universal Citation: 780 CMR MA Code of Regs 1911.2
Current through Register 1531, September 27, 2024

The allowable service load for headed anchors in shear or tension shall be as indicated in Table 1911.2. Where anchors are subject to combined shear and tension, the following relationship shall be satisfied:

(Ps / Pt )5/3 + (Vs / Vt ) 5/3 <= 1 (Equation 19-1)

where:

Ps = Applied tension service load, pounds (N).

Pt = Allowable tension service load from Table 1911.2, pounds (N).

Vs = Applied shear service load, pounds (N).

Vt = Allowable shear service load from Table 1911.2, pounds (N).

TABLE 1911.2 ALLOWABLE SERVICE LOAD ON EMBEDDED BOLTS (pounds)

BOLT DIAMETER
(inches) 		MINIMUM EMBEDMENT
(inches) 		EDGE DISTANCE
(inches) 		SPACING (inches) MINIMUM CONCRETE STRENGTH (psi)
f'c= 2,500 f'c= 3,000 f'c= 4,000
Tension Shear Tension Shear Tension Shear
1/4 21/2 11/2 3 200 500 200 500 200 500
3/8 3 21/4 41/2 500 1,100 500 1,100 500 1,100
1/2 4
4 		3
5 		6
6 		950
1,450 		1,250
1,600 		950
1,500 		1,250
1,650 		950
1,550 		1,250
1,750
5/8 41/2
41/2 		33/4
61/4 		71/2
71/2 		1,500
2,125 		2,750
2,950 		1,500
2,200 		2,750
3,000 		1,500
2,400 		2,750
3,050
3/4 5
5 		41/2
71/2 		9
9 		2,250
2,825 		3,250
4,275 		2,250
2,950 		3,560
4,300 		2,250
3,200 		3,560
4,400
7/8 6 51/4 101/2 2,550 3,700 2,550 4,050 2,550 4,050
1 7 6 12 3,050 4,125 3,250 4,500 3,650 5,300
11/8 8 63/4 131/2 3,400 4,750 3,400 4,750 3,400 4,750
11/4 9 71/2 15 4,000 5,800 4,000 5,800 4,000 5,800

For SI: 1 inch = 25.4 mm, 1 pound per square inch = 0.00689 MPa, 1 pound = 4.45 N.

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