Diamond Rib

Diamond Rib

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1. Steel conforms to ASTM A653.
2. Section properties are in accordance with CSA-S136-07.
3. Values in row “S” are based on strength.
4. Values in row “D” are based on a deflection limit of 1/180 of the span.
5. Web crippling not included in strength values. See example calculation in notes to designer.
6. Contact the sales department for stocked colours and gauges.
7. The load table contained on this data sheet was prepared by Dr. R.M. Schuster P.Eng. Professor Emeritus of Structural Engineering, University of Waterloo, Ontario, Canada.

Specifications
Gauge Length Coverage
Minimum Maximum Minimum Maximum
30241654036
30241648030
Gauge Length Coverage
Minimum Maximum Minimum Maximum
302440613.72914
302440612.92780
Section properties
Base Steel
Thickness
Weight
G90
Yield
Stress
Section
Modulus
Deflection Moment
of Inertia
Mid Span Support Mid Span
in psf ksi in3 in3 in4
0.01200.64330.02210.02020.0144
0.01350.71800.02270.02030.0152
0.01800.93330.03810.03610.0227
0.02401.22330.05500.04980.0302
0.03001.51330.06830.06370.0376
Base Steel
Thickness
Mass
Z275
Yield
Stress
Section
Modulus
Deflection Moment
of Inertia
Mid Span Support Mid Span
mm kg/m MPa x 103 mm3 x 103 mm3 x 106 mm4
0.3053.112301.191.090.0196
0.3433.465501.221.090.0207
0.4574.522302.041.940.0309
0.6105.942302.962.680.0412
0.7627.362303.673.420.0514