huangyhg

carnegie brothers historical sections
building is very early 1930s and the framing plans list the steel members such as 10cb23, 14cb30, 21cb92, etc. i have determined that the cb stands for carnegie brothers, and i assume that the first numbers are depth and the last numbers are weight per foot, but beyond that i cannot find section properties for these members. i have a copy of aisc design guide 15 for historical members, but the only cb members it shows have the nomenclature such as cb83 and the 83 does not appear to be depth or weight.
is there a correlation between what my drawings show and what design guide 15 lists for carnegie brothers sections, or is there another reference that would help me find some section properties?
perhaps this will help, i copied them from the aisc tables (cd version); they were all produced by carnegie during the time frame you mentioned.
possible 10 cb23?
library: historic
type: all (weight)
id = 661
designation = cb101
w = 23
a = 6.76
d = 10
tw = 0.23
bf = 6
tf = 0.381
t = 8.513
k = 0.744
bf_2tf = 7.87
h_tw = 37
fy3p = 47
x1 = 2237
x2 = 5813
ix = 122.2
zx = 26.9
sx = 24.4
rx = 4.25
iy = 13.7
zy = 7
sy = 4.6
ry = 1.43
j = 0.27
cw = 317
a = 54.6
wno = 14.4
sw = 8
qf = 5.29
qw = 13
fstr = c 1927,c 1930,
possible 14cb30?
library: historic
type: all (weight)
id = 252
designation = b14
w = 30
a = 8.89
d = 14
tw = 0.265
bf = 6.75
tf = 0.393
t = 12.03
k = 0.925
bf_2tf = 8.59
h_tw = 45.4
fy3p = 31
x1 = 1904
x2 = 12393
ix = 294.9
zx = 47.1
sx = 42.5
rx = 5.76
iy = 16.8
zy = 8.2
sy = 5
ry = 1.38
j = 0.46
cw = 764
a = 65.6
wno = 22.8
sw = 15
qf = 8.59
qw = 23
fstr = s24 1927,s27 1928,s35 1930,s40 1931,
possible 21cb92?
library: historic
type: all (weight)
id = 482
designation = cb213
w = 92
a = 27.05
d = 21
tw = 0.502
bf = 9.064
tf = 0.935
t = 17.745
k = 1.748
bf_2tf = 4.85
h_tw = 35.3
fy3p = 52
x1 = 2653
x2 = 3228
ix = 2086.4
zx = 219.2
sx = 196.5
rx = 8.78
iy = 116.3
zy = 39.6
sy = 25.7
ry = 2.07
j = 6.27
cw = 11987
a = 70.4
wno = 46
sw = 98
qf = 40.6
qw = 110
fstr = cb 213 ,cb 212,cb 211 ,c 1927,c 1929,cb 213, 21x13 ,cb 212, 21x9 ,cb 211, 21x8 ,c 1930,

what exactly is that reference? i'll need to get a hold of that because i have many more
here is the link to
aisc shapes database v13.0 - current (393 kb zipped microsoft excel file)
aisc shapes database v13.0 - historic (2.4 mb zipped microsoft excel file)
if you need a field reference for whatever reason, you could try to track down an illinois pocket companion from this time period. the one i have from 1934 has these shapes in it (first 20 or so pages).
see

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