10.0Design of Baseplate and Anchor Bolts

CalcsProject Name:Job NumberSheet No.RevEducation City InfrastructureMN00037Client:Prepared byChecked by41st Floor Philamlife TowerQatar FoundationROCKY D8767 Paseo De Roxas,Section of Project:DateDateMakati City, PhilippinesDesign of Baseplate and Anchor Bolts12/1/07REFERENCECALCULATIONSOUTPUTBS5950-1Location:Truss T01 SupportNote: Design is using non-preloaded bolts.4.131) Given Datapy=355N/mm2c=1mmd=20mmps=160N/mm2t=12mmAs=245mm2pbb=460N/mm2a=24mme=55mmpbs=550N/mm2b=24mmkbs=1pt=240N/mm2h=50mmPx=13kNfcu=35N/mm2n=2pcsPy=32kNBolt Grade =8.8, threads included from shear planePu=30kN4.13.2.22) Thickness of Baseplatetp = c*(3w/pyp)^1/2 =0.42mmok!BS8110-1:Use: w = 0.6fcu =21N/mm25.2.3.4From bearing of concrete: Ae = Py / 0.6fcu =1525.7mm23) Thickness of Baseplate(Assume slab base)tp = [(2.5w/pyp)(a2 - 0.3b2)]^1/2 =7.7mmok!4) Bolt CapacityBy Shearing:6.3.2.1Ps = ps*As =39.2kNBy Bearing:6.3.3.2Pbb = d*tp*pbb =110.4kN6.3.3.35) Bearing Capacity of BaseplatePbs1 = kbs*d*tp*pbs =132kNPbs2 = 0.5*kbs*e*tp*pbs =181.5kNPbs = min(Pbs1, Pbs2) =132kN6) Design Capacity of ConnectionP = Min(Ps, Pbb, Pbs) =39.2kNok!7) Uplift Capacity of ConnectionConical Surface Area, Acs = 4.44*h2Acs =11100mm2By Tension of bolts:6.3.4.2Pt = 0.8*pt*At =47.04At = As =245mm2By Concrete Pull-out:Pp = pp*Acs =52.5kNUsing: pp = min[0.8*fcu1/2, 5.0] =4.73N/mm2Ppc = Min(Pt, Pp) =47.0kNok!8) SummaryThickness of baseplate =12mmDiameter of Anchor Bolts =20mm

&L&Z&Frdmn0118:Taken from quadratic equation.rdmn0118:This design of baseplate and anchor bolts consider no bending moment.

NotationsProject Name:Job NumberSheet No.RevEducation City InfrastructureMN00037Client:Prepared byChecked by41st Floor Philamlife TowerQatar FoundationROCKY D8767 Paseo De Roxas,Section of Project:DateDateMakati City, PhilippinesDesign of Baseplate and Anchor bolts12/1/07REFERENCECALCULATIONSOUTPUTPx=Factored Vertical ForcePy=Factored Horizontal Forcepy=Design strength of steelps=Shear Strength of boltpbs=Bearing strength of connected partpbb=Bearing strength of boltt=Thickness of baseplated=Nominal diameter of boltAs=Shear area of boltkbs=Coefficient for type of holen=Number of anchor boltse=Edge distanceDt=Diameter of holeex=Eccentricity of axial forcePs=Shear capacity of boltPb=Bearing capacity of boltPbs=Bearing capacity of baseplatefcu=Compressive strength of concrete basept=Tension strength of boltsc=Largest perpendicular distance from the edge of the effective portionof the baseplate to the face of the column cross-sectionAe=Effective bearing areaa=Greater projection of plate beyond the rolled sectionb=Lesser projection of plate beyond the rolled sectionh=Embedment depth

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