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Beam on Elastic Foundation <br />LIC# : KW-06015027, Build:20.23.12.07 GeoStructural, LLC (c) ENERCALC INC 1983-2023 <br />DESCRIPTION:Slab On Grade - "Beam" on Soil Spring Design <br />GeoStructural LLC <br />Jesse Drennen, PE <br />Project File: 3 GEN calcs MERGE.ec6 <br />Project Title:AT&T Generator Upgrade Project <br />Engineer:Jesse Drennen, PE <br />Project ID: <br />Project Descr:Standby Generator on Concrete Slab <br />CODE REFERENCES <br />Calculations per ACI 318-19, IBC 2021, ASCE 7-16 <br />Load Combinations Used : ASCE 7-16 <br />Material Properties <br />2.50 <br />7.50 <br />150.0 <br />Elastic Modulus 2,850.0 ksi <br />Soil Subgrade Modulus =47.0 psi / (inch deflection) <br />11.0Lt Wt FactorO = <br />=60.0 <br />29,000.0 <br />40.0 <br />29,000.0 <br />3 <br />Beam is supported on an elastic foundation, <br />2 <br />=0.90 <br />0.750 <br />f'c ksi <br />fy - Main Rebar ksi <br />Density <br />1/2 <br />= <br />fr = f'c *375.0 <br />pcf <br />E - Main Rebar ksi <br />psi <br />= <br />Fy - Stirrups ksi <br />== <br />= <br />E - Stirrups ksi <br />E 0.850 <br />== <br />= <br />Shear : <br />Stirrup Bar Size # <br />Number of Resisting Legs Per Stirrup <br />Phi Values Flexure : <br />\ <br /># <br />I <br />Load Combination :ASCE 7-16 <br />.Cross Section & Reinforcing Details <br />Rectangular Section, Width = 48.0 in, Height = 9.0 in <br />Span #1 Reinforcing.... <br />5-#5 at 4.0 in from Top, from 0.0 to 10.0 ft in this span <br />.Service loads entered. Load Factors will be applied for calculations.Applied Loads <br />Beam self weight calculated and added to loads <br />Load for Span Number 1 <br />Moment : W = 1.670, E = 4.320 k-ft, Location = 5.0 ft from left end of this span <br />Point Load : D = 5.077 k @ 5.0 ft <br />Point Load : E = 1.040 k @ 5.0 ft <br />.Design OKDESIGN SUMMARY <br />Maximum Bending Stress Ratio =0.460 : 1 <br />Load Combination +1.405D+E <br />Span # where maximum occurs Span # 1 <br />Maximum Soil Pressure =0.288 ksf at 6.33 ft LdComb: +D+0.70E <br />Allowable Soil Pressure =OK1.0 ksf <br />Location of maximum on span 5.059 ft <br />Mn * Phi : Allowable 24.720 k-ft <br />Typical SectionSection used for this span <br />Mu : Applied 11.377 k-ft <br />Maximum Deflection <br />Max Downward L+Lr+S Deflection 0.000 in <br />Max Upward L+Lr+S Deflection 0.000 in <br />Max Downward Total Deflection 0.042 in <br />Max Upward Total Deflection 0.021 in <br />.Shear Stirrup Requirements <br />Entire Beam Span Length : Vu < PhiVc/2, Req'd Vs = Not Reqd, use stirrups spaced at 0.000 in <br />.Maximum Forces & Stresses for Load Combinations <br />Span # <br />Bending Stress Results ( k-ft )Location (ft)Load Combination <br />Mu : Max Stress RatioSegment Length Phi*Mnxin Span <br />MAXimum Bending Envelope <br />Span # 1 1 5.059 11.38 24.72 0.46 <br />+1.40D <br />2621 S Birch St - 101119515 & <br />20182981 <br />7/24/2024