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Steel I - Beam Calculation Note Issue:DesignPage
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Date:5/24/19991 of 1
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Project:Assignment #5 - Problem 5.6 (a)Revised by:Mohd Darwish
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Checked by:Mohd DarwishLRFD
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Concentrated Loads (kips)
Distributed Loads (kips/ft)
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xi (ft)Dead LiveWindEPixli (ft)xri (ft)Dead LiveWindEwi
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5110360.0760000.076
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00360.8331.252.083
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00
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00
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00
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00
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End Moments (kips-ft)
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Ml0
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Mr0
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Span L (ft) =
Deflection Condition
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L / Dmax =
240
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Zones Between Lateral Supports
Fy (ksi) =
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36
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FromTo
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Designation
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612W24x76
Reactions Rl & Rr (kips)
RlRr
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1218Dead#NAME?#NAME?
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1824Live#NAME?#NAME?
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2430Wind#NAME?#NAME?
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E#NAME?#NAME?
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Beam PropertiesTOTAL#NAME?#NAME?
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A (in2)d (in)tw (in)bf (in)tf (in)T (in)Ix (in4)Sx (in3)rx (in)Iy (in4)ry (in)Zx (in3)J (in4)Cw (in6)
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22.423.920.448.990.68212100176.09.6982.51.92200.02.6811100
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Lateral buckling (LRFD p.6-53)
Plastic buckling moment (LRFD p.4-6)
Local buckling
flangeweb(LRFD p.4-7)
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Lp (ft) =8
Mp (kips-ft) =
600l =6.61029411847.72727273
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Lr (ft) =23.45176032
Limiting buckling moment (LRFD p.4-6)
lp =10.83333333106.6666667
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Mr (kips-ft) =
381.3333333lr =27.65237505161.6666667
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Results:
Max Deflection Dmax (in) =
#NAME?at x (ft) =#NAME?
due to live load
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Load Combinations
1.4D1.2D+1.6L1.2D+1.0E+0.5L1.2D+1.3W+0.5L
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Moment Mu (kips-ft) =
#NAME?#NAME?#NAME?#NAME?
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at x (ft) =#NAME?#NAME?#NAME?#NAME?
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Shear Vu (kips) =
#NAME?#NAME?#NAME?#NAME?
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at x (ft) =#NAME?#NAME?#NAME?#NAME?
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Required Flexural Strength Mu (kips-ft) =
#NAME?at x (ft) =#NAME?
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Required Shear Strength Vu (kips) =
#NAME?at x (ft) =#NAME?
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Checkings:
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Deflection (LRFD p.4-29)
L / Dmax =
#NAME?#NAME?240#NAME?
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Nominal Flexural Strength Mn (kips-ft) (f = 0.9) (LRFD p.4-6,4-7)
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Critical unbraced length for lateral torsional buckling:
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ZoneformtoLb (ft)CbMu (ft-kips)Mn
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#NAME?#NAME?#NAME?#NAME?#NAME?#NAME?
Mu / f Mn =
#NAME?#NAME?
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Local buckling in flange
600
Mu / f Mn =
#NAME?#NAME?
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Local buckling in web
600
Mu / f Mn =
#NAME?#NAME?
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Nominal Shear Strength Vn (kips) (f = 0.9) (LRFD p.6-56)
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Nominal Shear Strength Vn (kips)
227.33568
Vu / f Vn =
#NAME?#NAME?
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Steel I - Beam Calculation Note Issue:DesignPage
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Date:1 of 1
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Project:Test1Revised by:Test1
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Checked by:Test2LRFD
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