Group of Tension and Shear Fasteners Near Two Edges Based on ACI 318-02
INPUT DATA & DESIGN SUMMARY
CONCRETE STRENGTH
fc' =
SPECIFIED STRENGTH OF FASTENER fut = 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 Nu = k
FACTORED DESIGN SHEAR LOAD
Vu = k
EFFECTIVE EMBEDMENT DEPTH
hef = in
FASTENER DIAMETER
d = in
FASTENER HEAD TYPE
  ( 1=Square, 2=Heavy Square, 3=Hex, 4=Heavy Hex, 5=Hardened Washers )
FASTENER CENTER-TO-CENTER SPACING s = in
DIST. BETWEEN THE FASTENER AND EDGE c1 = in
DIST. BETWEEN THE FASTENER AND EDGE c2 = in
ANALYSIS
NUMBER OF FASTENERS
n =
EFFECTIVE AREA OF FASTENER
Ase = in2
BEARING AREA OF HEAD
Ab = in2, ( or determined from manufactures's catalogs.)
CHECK THE FASTENERS TENSILE STRENGTH :
= k Nu
where : f =
CHECK CONCRETE BREAKOUT STRENGTH :
= k Nu
where : f =
       y1 term is 1.0 for no eccentricity in the connection.
       y3 term is 1.0 for location where concrete cracking is likely to occur.
= k Nu
where : f =
       y4 term is 1.0 for location where concrete cracking is likely to occur.
CHECK SIDE-FACE BLOWOUT STRENGTH :
cmin 0.4hef
Since the fasteners are located far from a free edge of concrete, c>0.4hef ,this type of failure mode is not applicable.
DETERMINE DESIGN TENSILE STRENGTH :
= K
CHECK FASTENERs SHEAR STRENGTH :
= k Vu
where : f =
= k Vu
where : f =
       y5 term is 1.0 for no eccentricity in the connection.
       y7 term is 1.0 for location where concrete cracking is likely to occur.
       l term is load bearing length of the anchor for shear, not to exceed 8d.
= k Nu
where : f = 0.75
       y3 term is 1.0 for location where concrete cracking is likely to occur.
kcp = for hef > 2.5 in.
DETERMINE DESIGN TENSILE STRENGTH :
= K
REQUIRED EDGE DISTANCES AND SPACINGS TO PRECLUDE SPLITTING FAILURE :
Since headed cast-in-place fasteners are not like to be highly torqued, the minimun cover requirements of ACI 318 Sec. 7.7 apply.
CoverProvd CoverReqd
[Satisfactory]
CHECK TENSION AND SHEAR INTERACTION :
Since Nu 0.2 f Nn and
Vu 0.2 f Vn
Summary of Dimensional Properties of Fasteners
Effective
Fastener Gross Area of Bearing Area of Heads, Nuts, and Washers
Diameter Area of Threaded ( Ab )  ( in2 )
( in ) Fastener Fastener Square Heavy Hex Heavy Hardened
( in2 ) ( in2 ) Square Hex Washers