Single Fastener in Tension and Shear Near an Edge
Based on ACI 31802

INPUT
DATA & DESIGN SUMMARY


CONCRETE
STRENGTH



f_{c}'

=








SPECIFIED
STRENGTH OF FASTENER

f_{ut}

=


ksi






(The strength
of most fastenings is likely to be controlled by the embedment strength
rather













than the steel strength, so it is
usually economical to use ASTM A307 Grade A fastener.)





FACTORED
DESIGN TENSION LOAD

N_{u}

=


k






FACTORED
DESIGN SHEAR LOAD


V_{u}

=


k






EFFECTIVE
EMBEDMENT DEPTH


h_{ef}

=


in






FASTENER
DIAMETER



d

=


in


FASTENER
HEAD TYPE












( 1=Square, 2=Heavy Square, 3=Hex, 4=Heavy
Hex, 5=Hardened Washers )







DIST.
BETWEEN THE FASTENER AND EDGE

c

=


in

















ANALYSIS










EFFECTIVE
AREA OF FASTENER


A_{se}

=


in^{2}






BEARING
AREA OF HEAD


A_{b}

=


in^{2}, ( or determined from
manufactures's catalogs.)

CHECK
FASTENER TENSILE STRENGTH :





















=


k


N_{u}















where :

f

=











CHECK
CONCRETE BREAKOUT STRENGTH :


















































=


k


N_{u}







where :

f

=












y_{3} term is 1.0 for location where concrete cracking is likely to
occur.






CHECK
PULLOUT STRENGTH :






















=


k


N_{u}















where :

f

=












y_{4} term is 1.0 for location where concrete cracking is likely to
occur.






CHECK
SIDEFACE BLOWOUT STRENGTH : (Since c > 0.4hef , this type of failure mode
is applicable.)
















=


k


N_{u}















where :

f

=











DETERMINE
DESIGN TENSILE STRENGTH :

















=


K














CHECK
FASTENER SHEAR STRENGTH :





















=


k


V_{u}















where :

f

=












































=


k


V_{u}














where :

f

=












y_{7} term is 1.0 for location where concrete cracking is likely to
occur.







A_{V}/A_{Vo} and y_{6} terms are 1.0 for single shear fastener not influenced by
more than one free edge.




l term is load bearing length of the
anchor for shear, not to exceed 8d.





















































































=


k


N_{u}







where :

f

=

0.75











y_{3} term is 1.0 for location where concrete cracking is likely to
occur.







k_{cp}

=


for h_{ef} > 2.5 in.








DETERMINE
DESIGN TENSILE STRENGTH :




























=


K



















CHECK
TENSION AND SHEAR INTERACTION :











Since

N_{u}


0.2 f N_{n}

and










V_{u}


0.2 f V_{n}

































Summary of Dimensional
Properties of Fasteners





Effective










Fastener

Gross

Area of

Bearing Area of Heads,
Nuts, and Washers





Diameter

Area of

Threaded

( A_{b} ) ( in^{2} )





( in )

Fastener

Fastener

Square

Heavy

Hex

Heavy

Hardened







( in^{2 })

( in^{2 })

Square

Hex

Washers

























































































































































































