PART 3 TENSION LOAD
Steel Failure
Variables A se , N
Variables ACI 318-14 Chapter 17 Provision Comments for PROFIS Engineering
A se , N
17.4.1.1 The nominal strength of an anchor in tension as governed by the steel , N sa
, shall be evaluated by calculations based on the properties of the anchor material and the physical dimensions of the anchor .
17.4.1.2 The nominal strength of an anchor in tension , N sa , shall not exceed
N sa
= A se , N
F uta
( 17.4.1.2 )
Where A se , N is the effective cross-sectional area of an anchor in tension , in . 2 , and f uta shall not be taken greater than the smaller of 1.9f ya and 125,000 psi . PROFIS Engineering cast-in-place anchor portfolio values for A se , N
.
MATERIAL SPECIFICATION
AES D1.1
ASTM F 1554
ASTM F 1554
ASTM F 1554
GRADE OR TYPE
DIAMETER ( d 0
) ( in )
TENSILE STRENGTH
( f uta ) ( ksi )
YIELD STRENGTH
( f ya ) ( ksi )
GROSS AREA ( in 2 )
EFFECTIVE AREA ( A se
)
( in 2 )
B |
0.500 |
65 |
51 |
0.196 |
|
B |
0.625 |
65 |
51 |
0.307 |
|
B |
0.750 |
65 |
51 |
0.442 |
|
B |
0.875 |
65 |
51 |
0.601 |
|
36 |
0.500 |
58 |
36 |
0.196 |
0.142 |
36 |
0.625 |
58 |
36 |
0.307 |
0.226 |
36 |
0.750 |
58 |
36 |
0.442 |
0.334 |
36 |
0.875 |
58 |
36 |
0.601 |
0.462 |
36 |
1.000 |
58 |
36 |
0.785 |
0.606 |
36 |
1.125 |
58 |
36 |
0.994 |
0.763 |
36 |
1.250 |
58 |
36 |
1.227 |
0.969 |
36 |
1.375 |
58 |
36 |
1.485 |
1.160 |
36 |
1.500 |
58 |
36 |
1.767 |
1.410 |
36 |
1.750 |
58 |
36 |
2.405 |
1.900 |
36 |
2.000 |
58 |
36 |
3.142 |
2.500 |
55 |
0.500 |
75 |
55 |
0.196 |
0.142 |
55 |
0.625 |
75 |
55 |
0.307 |
0.226 |
55 |
0.750 |
75 |
55 |
0.442 |
0.334 |
55 |
0.875 |
75 |
55 |
0.601 |
0.462 |
55 |
1.000 |
75 |
55 |
0.785 |
0.606 |
55 |
1.125 |
75 |
55 |
0.994 |
0.763 |
55 |
1.250 |
75 |
55 |
1.227 |
0.969 |
55 |
1.375 |
75 |
55 |
1.485 |
1.160 |
55 |
1.500 |
75 |
55 |
1.767 |
1.410 |
55 |
1.750 |
75 |
55 |
2.405 |
1.900 |
55 |
2.000 |
75 |
55 |
3.142 |
2.500 |
105 |
0.500 |
125 |
105 |
0.196 |
0.142 |
105 |
0.625 |
125 |
105 |
0.307 |
0.226 |
105 |
0.750 |
125 |
105 |
0.442 |
0.334 |
105 |
0.875 |
125 |
105 |
0.601 |
0.462 |
105 |
1.000 |
125 |
105 |
0.785 |
0.606 |
105 |
1.125 |
125 |
105 |
0.994 |
0.763 |
105 |
1.250 |
125 |
105 |
1.227 |
0.969 |
105 |
1.375 |
125 |
105 |
1.485 |
1.160 |
105 |
1.500 |
125 |
105 |
1.767 |
1.410 |
105 |
1.750 |
125 |
105 |
2.405 |
1.900 |
105 |
2.000 |
125 |
105 |
3.142 |
2.500 |
ACI 318-14 Section 17.4.1.2 defines the parameter A se , N as “ the effective crosssectional area of an anchor in tension .” A se , N corresponds to the “ tensile stress area ” of an anchor element , which is calculated using the minor diameter of the element : π ( d minor
) 2
A se , N
= 4
The PROFIS Engineering cast-in-place anchor portfolio includes the following anchors :
• AWS D1.1 Type B headed studs ( 1 / 2 ” – 7 / 8 ” nominal diameter )
• ASTM F1554 hex head bolt , Gr . 36 , Gr . 55 , Gr . 105 ( 1 / 2 ” – 1 1 / 2 ” nominal diameter )
• ASTM F1554 heavy hex head bolt , Gr . 36 , Gr . 55 , Gr . 105 ( 1 / 2 ” – 2 ” nominal diameter )
• ASTM F1554 square head bolt , Gr . 36 , Gr . 55 , Gr . 105 ( 1 / 2 ” – 1 1 / 2 ” nominal diameter )
• ASTM F1554 heavy square head bolt , Gr . 36 , Gr . 55 , Gr . 105 ( 1 / 2 ” – 1 1 / 2 ” nominal diameter )
The table to the left shows the A se , N
-values for the PROFIS Engineering cast-inplace anchor portfolio . PROFIS Engineering uses these values to calculate N sa per
Equation ( 17.4.1.2 ).
Post-installed anchor ICC-ESR include pre-calculated values for the nominal steel strength of an anchor element ( N sa
). A se , N
-values may also be given in the ICC-ESR , however , PROFIS Engineering uses the pre-calculated N sa
-values instead of calculating N sa per Equation ( 17.4.1.2 ).
Reference the Calculations and Results section of the PROFIS Engineering report for more information on :
N sa
: Nominal steel strength in tension
Reference the Variables section of the PROFIS Engineering report for more information on :
f uta
: Ultimate tensile stress of an anchor element
133 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions