Concrete Anchor Tension Pullout Force Design Calculator

Concrete Anchor Tension Pullout Force Design Calculator per ACI 318-02.

 Group of Concrete Anchors Tension Pull Away Calculator ACI 318-02 INPUT DATA & DESIGN SUMMARY CONCRETE STRENGTH fc' = ksi 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 LOAD Nu = 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 ) ECCENTRICITY e = in FASTENER CENTER-TO-CENTER SPACING s = in DIST. FR. THE OUTER FASTENERS TO ED c = in ANALYSIS TOTAL NUMBER OF FASTENERS n = EFFECTIVE AREA OF FASTENER Ase = in2 BEARING AREA OF HEAD Ab = in2, ( or determined from manufactures's catalogs.) CHECK HIGHTEST TENSILE STRENGTH : = k = where : f = CHECK CONCRETE BREAKOUT STRENGTH : = k Nu where : f = y3 term is 1.0 for location where concrete cracking is likely to occur. CHECK PULLOUT STRENGTH OF SINGLE STUD : = k Nu, max, 1 stud where : f = y4 term is 1.0 for location where concrete cracking is likely to occur. EVALUATE SIDE-FACE BLOWOUT : c 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. REQUIRED EDGE DISTANCES AND SPACINGS TO PRECLUDE SPLITTING FAILURE : Since a welded, headed fastener is not torqued, the minimun cover requirements of ACI 318 Sec. 7.7 apply. CoverProvd CoverReqd 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 Techincal Reference: 1. Ronald Cook, "Strength Design of Anchorage to Concrete," PCA, 1999. Note: For seismic Design Category C, D, E or F, the design strength of anchors shall be taken as 0.75 fNn & 0.75fVn. (ACI318-02 D3.3.3, IBC 1913.3.3)