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BAR SIZES
WEIGHT
NOMINAL DIMENSIONS – ROUND SECTIONS
OLD (INCHES)
NEW (NOS.)
POUNDS PER FOOT
DIAMETER INCHES
CROSS SECTIONAL AREA - SQ. IN.
PERIMETER INCHES
0.167
0.250
0.05
0.786
0.376
0.375
0.11
1.178
0.668
0.500
0.20
1.571
1.043
0.625
0.31
1.963
1.502
0.750
0.44
2.356
2.044
0.875
0.60
2.749
2.670
1.000
0.79
3.142
3.400
1.128
1.00
3.544
4.303
1.270
1.27
3.990
5.313
1.410
1.56
4.430
The new bar numbers are based on the number of 1/8 inches included in the nominal diameter of the bar. Bar number 2 in plain rounds only. Bars numbered 9, 10 and 11 are round bars and equivalent in weight and nominal cross-sectional area to the old type 1", 1-1/8" and 1-1/4" square bars.
LOS ANGELES COUNTY FLOOD CONTROL DISTRICT
Revised 1-19-71
DATE – JULY, 1932
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