PART 3 TENSION LOAD
Side-Face Blowout Failure
Variables f ́c
Variables ACI 318-14 Chapter 17 Provision Comments for PROFIS Engineering
f ́c
17.2.7 The values of f ́c used for calculation purposes in this chapter shall not exceed 10,000 psi for cast-in anchors , and 8000 psi for post-installed anchors . Testing is required for post-installed anchors when used in concrete with f ́c greater than 8000 psi .
17.4.4.1 For a single headed anchor with deep embedment close to an edge ( h ef > 2.5c a1
), the nominal side-face blowout strength , N sb , shall not exceed
N sb
= 160c a1
A brg λ a f ́c ( 17.4.4.1 ) f ́c is a parameter used to define concrete compressive strength . This parameter is used to calculate the nominal side-face blowout strength for a single anchor ( N sb
) per Eq . ( 17.4.4.1 ).
PROFIS Engineering only performs side-face blowout calculations for the cast-in anchors in its portfolio . Users can input an f ́c-value within the range 2500 psi ≤ f ́c ≤ 10,000 psi for calculating N sb
. The maximum f ́c-value for calculations will be limited to 10,000 psi .
The PROFIS Engineering cast-in anchor portfolio is as follows :
• 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 )
Reference the Variables section of the report for more information on the parameters c a1
, c a2 , A brg
, λ a and s .
Reference the Calculations section of the report for more information on the parameters N sb
.
114 NORTH AMERICAN PROFIS ENGINEERING ANCHORING TO CONCRETE DESIGN GUIDE — ACI 318-14 Provisions