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Black Rock Prefabricated Fireproof Columns (Round Type OH)

Column Shape: Round Type OH Sizes

Rating Р2 Hour Rating Р3 Hour  Rating Р4 Hour
Core Size Available Shell Size Weight per foot
(lbs./ft)
Available Shell Size Weight per foot
(lbs./ft)
Available Shell Size Weight per foot
(lbs./ft)
W4x13 Pipe8SCH20 57.08 Pipe8SCH20 57.08 Pipe9SCH40 73.56
W6X25 Pipe11SCH40 110.22 Pipe11SCH40 110.22 Pipe12SCH40 126.35
W8X31 Pipe14SCH10 128.31 Pipe14SCH10 128.31 Pipe16SCH1 154.22
W8X67 Pipe16SCH1 185.56 Pipe16SCH1 185.56 Pipe16SCH1 185.56
W10X60 Pipe18SCH10 208.21 Pipe18SCH10 208.21 Pipe18SCH10 208.21
W10X112 Pipe18SCH10 253.48 Pipe18SCH10 253.48 Pipe20SCH10 285.06
W12X50 Pipe18SCH10 199.5 Pipe18SCH10 199.5 Pipe20SCH10 231.07
W12X120 Pipe20SCH10 292.02 Pipe22SCH10 326.44 Pipe22SCH10 326.44
W12X336 Pipe24SCH10 551.76 Pipe24SCH10 551.76 25X0.25 573.25
W14X26 Pipe18SCH10 178.6 Pipe18SCH10 178.6 Pipe20SCH10 210.18
W14X90 Pipe24SCH10 337.56 Pipe24SCH10 337.56 Pipe24SCH10 337.56
W14X145 Pipe24SCH10 385.45 Pipe24SCH10 385.45 24.92X0.25 405.33
W14X665 29.93X0.25 967.5 30.43X0.25 979.39 31.43X0.25 1003.71
W14X730 30.68X0.25 1042 31.18X0.25 1054.16 32.18X0.25 1079.01
W16X100 Pipe22SCH10 309.02 Pipe24SCH10 346.27 Pipe24SCH10 346.27
W18X40 Pipe22SCH10 256.78 Pipe22SCH10 256.78 Pipe24SCH10 294.02
W18X283 26.88X0.25 566.17 27.38X0.25 576.98 28.38X0.25 599.13
W21X50 Pipe24SCH10 302.73 24.33X0.25 310.9 25.33X0.25 330.89
W21X101 26.64X0.25 402.56 27.14X0.25 413.29 28.14X0.25 435.28
W24X94 27.95X0.25 424.95 28.45X0.25 436.14 29.45X0.25 459.06
W27X102 30.88X0.25 500.02 31.38X0.25 512.25 32.38X0.25 537.25
W30X90 33.31X0.25 550.68 33.81X0.25 563.77 34.81X0.25 590.48
W30X433 39.15X0.25 1013.31 39.65X0.25 1028.47 40.65X0.25 1059.32
W33X468 42.32X0.25 1142.91 42.82X0.25 1159.2 43.82X0.25 1192.3

See Complete Round Type OH Sizing Chart

The sizes in the chart to the left are only a small fraction of the number of sizes we offer. To see all sizes, please click the button below and fill out the form. Our complete sizing sheets will be sent to you via email and someone from our team will reach out to you shortly to answer any questions you may have.