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°. E sySeals CALCULATIONS FOR FREESTANDING SIGNS W earyseals wm Cast-in-Place Concrete Anchor Bolts ACI 318-11,Appendix"D" Required Strength: Wind pressure: W= 24.7 psf Tributary area: A= 36.0 sqft Dead load: D= 0 lb Load eccentricity: e = 3.4 ft ASCE 7-10,2.3.2: U = (1.2)D+(1.0)W Mu= 3.02 kip-ft ..._[(1.2)D+(1.0)W]*A*e Anchor & Concrete Specs: Concrete: Pc= 2500 psi Anchor bolt size: 3/4" da = 0.75 in nt= 10 threads/in Anchor material: SAE Grade 2/A307 futa = 74 ksi Embedment: hef= 11 in Edge distance: ED= 16 in Qty anchors in group: Q= 2 anchors Anchor group offset: a = 4 in Anchor Strength: Steel: (�s= 0.75 Tension: U <_ 0.75 (� Nn Conc, no suppl reinf: #= 0.70 Steel Strength: Ase= n/4*(da-0.9743/nt)Z Nsa = Ase*futa Ase= 0.33 in' Nsa = 24.8 kips 4s*Nsa= 18.6 kips Concrete Breakout: Anc= [ED+s+1.5*hef]*[ED+1.5*hef] _ Anco= 9*hef^2 Anc= 1056 in' Anco = 1089 in' Nb= kc*A*df'c*hef^1.5 Cracked Concrete: Lpc= 1.0 Nb = 43.8 kips Cast-in anchors: Lpcp= 1.0 Limit=16*A*Vf'c*hef^(5/3) = 43.5 kips LPed =0.7+0.3*ED/(1.5*hef) LPed = 0.99 kc= 24 ...cast-in anchors No eccentricity between anchors: 4Jec= 1.0 R= 1.0 ...normal weight concrete Concrete breakout strength: Ncb= (Anc/Anco)*LUc*LPcp*LPed*LPec*Nb NO= 42.1 kips 4)c*Ncb= 29.5 kips Concrete Pullout: Headed Stud/Bolt: Head diameter: dh = 1 in Np= 8*Abrg*f'c Abrg= 0.8 in' Np= 15.7 kips Cracked Concrete: U)c,p= 1.0 Concrete pullout strength: Npn= LPc.p*Np Npn= 15.7 kips 4)c*Npn= 11.0 kips _ Concrete Blowout: _ Headed Stud/Bolt:R� Nsb= 160*ED*VAbrg*,X*df'c Concrete blowout strength: Nsb= 113.4 kips 4c*Nsb= 79.4 kips Critical Anchor Strength: 4)Nn = min(4)s*Nsa,q)c*Ncb,(�c*Npn,(�c*Nsb) 4)Nn= 11.0 kips 4)Mn = Q*4)Nn*a 4)Mn= 7.3 kip-ft Mu 5 0.75 4) Mn 3.02 kip-ft < 5.5 kip-ft OK Page 5