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����� CALCULATIONS FOR FREESTANDING SIGNS
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ALUMINUM DESIGN MANUAL
Specifications for Aluminum Structures (Buildings)
Design Check of 6"O x 0.188"Aluminum Pipe
Alloy: 6063 Temper: T6 Welded: N
SECTION PROPERTIES —
d 6.000" Outer Diameter
t 0.188" Thickness
Ix 14.51 in"4 Moment of Inertia about axis parallel to flange t
ly 14.51 in"4 Moment of Inertia about axis parallel to web
j Sc 4.84(n^3 Section modulus, compression side (about X-axis)
rx 2.06 in Radius of gyration about centroidal axis parallel to flange
ry 2.06 in Radius of gyration about centroidal'axis parallel to web
1 29.02 in^4 Torsion constant
A 3.43 in^2 Cross sectional area of member
MATERIAL PROPERTIES
Ftu 30 ksi Tensile ultimate strength {
Fty 25 ksi Tensile yield strength
Fcy 25 ksi Compressive yield strength
Fsu 19 ksi Shear ultimate strength
E 10,100 ksi Compressive Modulus of Elasticity I
I ALLOWABLE STRESSES
� I�^�si+.sa ssm.•+ .- srs. � �._.;.-......v..� __ _-___ _- _ __ —_ _ �•^y i
Fb=.16A4 ksi Allowable bending stress �#
i Fac= 10.81 ksi: Allowable axial stress,compression -
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MEMBER LOADING '
Design wind pressure: P= 45.4 psf End Supports: Cantiliever
Sign area: A1= 10.5 sq ft ...trib area for each post(e.g.sign+post) !
c
Eccentricity of applied force: e1= 12.5 ft ...dist to area centroid(weighted avg hl,h2)
!
Bending Moments
Mz 5.96 kip-ft Bending momemt developed in member Ma= 6.5 kip ft
fb= 14.78 ksi Bending stress developed in member
Fb= 16.14 ksi Allowable bending stress of member fb< Fb OK
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