Spreader Beam Calculation
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Transcript of Spreader Beam Calculation
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Spreader Beam Calculation© 2009 Dharma Sakti Engineering
41450.5 N 41450.5 N
Input Load [42]
5,640.00 kg
82,901.00 N
Impact factor 2
Beam Sizing a. Bending Stress
Beam Size IWF600 x 190 x 75 x 13 Bending Stress (Sb) 126.37 N/mm2
h 600 mm Allowable Bending Stress (Sb.all) 159.27 N/mm2
Material A-36 Check OK..
Moment of Inertia (I-x) 9.84E+08 mm4
Cross Section Area of Beam (A) 16940 mm2 b. Compressive Stress
Length of Member (L) 5000 mm Compressive Force (Fc) 82,901.00 N/mm2
Modulus of Elasticity (E) 2.00E+05 N/mm2 Compressive Stress (Sc) 4.89 N/mm
2
Specified of Yield Stress (Sy) 241.32 N/mm2 144.79 N/mm
2
Check OK..
c. Combined Stress
U 0.83
Check OK..
Lug Sizing a. Allowable Stress
Lug Radius (rL) 50 mm Allowable Bending Stress (Sbx.all) 159.27 N/mm2
Lug Thickness (tL) 25 mm Allowable Bending Stress (Sby.all) 180.99 N/mm2
Lug base width (wL) 200 mm Allowable Tensile Stress (St.all) 144.79 N/mm2
Diameter of hole (d) 30 mm Allowable Bearing Stress (Sbr.all) 217.19 N/mm2
150 mm Allowable Shear Stress (Ss.all) 96.53 N/mm2
0 mm
0 mm b. Design Load
Material A-36 N Sling Tension (P) 55,326.00 N
Specified yield stress (Sy) 241.32 N/mm2 Vertical Force on Pad Eye (Fz) 47,913.72 N
Component force acting on beam
(F)
Allowable Compressive Stress (Sc.all)
Distance from lug hole to base (hL)
Collar Ring Diameter (dCP)
Collar Plate Thickness (tCP)
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Actual Load at Spreader Beam
Specified yield stress (Sy) 241.32 N/mm Vertical Force on Pad Eye (Fz) 47,913.72 N
27,663.00 N/mm2 Out of Plane Force (Fyl) 2,766.30 N
Factor of Safety (FOS) 2.00 Horizontal Force on Pad Eye (Fx) 27,663.00 N
Lifting Angle (a) 60.00 °
Actual Out of Plane (b) 0.00 ° c. Moment Calculation at Base (at distance h)Horizontal dist. Pin CL to N.A (exl) 0.00 In Plane Moment (My) 16,597,800.00 N-mm
Out of Plane Moment (Mx) 414,945.00 N-mm
d. Tensile Stress at Base
Maximum Tensile Stress (St) 9.58 N/mm2
Check OK..
e. Bending Stress at Base (In Plane)
Maximum Bending Stress (Sbx) 19.92 N/mm2
Check OK..
f. Bending Stress at Base (Out Plane)
Maximum Bending Stress (Sby) 99.59 N/mm2
Check OK..
g. Combined StressU 0.74
Check OK..
h. Shear Stress at Base (In Plane)
Maximum Shear Stress (Ssx) 5.53 N/mm2
Check OK..
i. Shear Stress at Base (Out Plane)
Maximum Shear Stress (Ssy) 0.55 N/mm2
Check OK..
j. Checking Von-Misses Criteria
Sum of Stress in X-Plane (Sx) 109.17 N/mm2
Sum of Stress in Y-Plane (Sy) 29.50 N/mm2
Average Shear Stress (Sxy) 5.56 N/mm2
98.29 N/mm2
Check OK..
Maximum Sling Tension on Pad Eye
Maximum Combined Stress (Scomb.)
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Page 2 of 2
Spreader Beam Calculation© 2009 Dharma Sakti Engineeringhttp://www.wbsakti.wordpress.com
k. Tensile Stress at Pin HoleMaximum Tensil Force (P) 41,450.50 N
1,750.00 mm2
Tensile Stress (St) 23.69 N/mm2
Check OK..
l. Shear Stress at Pin HoleMaximum Shear Force (P) 41,450.50 N
1,750.00 mm2
Shear Stress (Ss) 23.69 N/mm2
Check OK..
m. Combined StressU 0.41
Check OK..
Weld Size Calculation a. Tensile StressWeld Leg used 8 mm Maximum Tensil Force (Ft) 41,450.50 N
Weld Throat Thickness used (tr) 6 mm 2,700.00 mm2
Filler metal Material E-43 Tensile Stress (St) 15.35 N/mm2
Fillet Weld Joint Eff. (E) 0.49 Check OK..
125 N/mm2
61.25 N/mm2 b. Shear Stress
Maximum Tensil Force (Fs) 41,450.50 N
Shear Stress (Ss) 15.35 N/mm2
Check OK..
c. Bending StressMaximum Bending Force (Fb) 46,424.56 N
Shear Stress (Ss) 17.19 N/mm2
Check OK..
Cross Sectional Area of Lug Eye (At)
Welding Stress for Steel Grade 43
(E-43)
Allowable Welding Stress (Sw)
Area of Weld (Aw)
Cross Sectional Area of Lug Eye (At)
Shackle Selection a. Clearance CheckA 42.9 mm Lug Thickness OK.. 25.00 mm
C 84 mm Lug Radius OK.. 50.00 mm
Schakle rating (S.W.L) 6.5 tons Check OK..
Type of shackleBolt type Anchor Schakle
G213025.4 mm b. Hole Dimension Check
Max of Dp + 3 mm 28.40 mm
Dp x 1.05 26.67 mm
Dp + 6 mm 31.40 mm
28.40 30 31.40 OK..
Pin size (Dp)
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