Corrected Tables A and B for 1926 Subpart R, the Steel Erection Standard

Standard Number: 1926.757(c)(3)

December 19, 2002

R. Donald Murphy
Managing Director
Steel Joist Institute
3127 10^th Avenue North Ext.
Myrtle Beach, SC 29577-6760

Re: Errors in Tables A & B of 29 CFR Part 1926 Subpart R (steel erection standard)

Dear Mr. Murphy:

This is in response to your letter of October 4, 2002, in which you ask that OSHA make several corrections to erection bridging Tables A and B in the new steel erection standard (29 CFR Part 1926 Subpart R). You note that in several instances the Tables erroneously indicate that certain joists require erection bridging. You also point out that the definition of the abbreviation "NM" is incorrect.

Response: We agree that there are several errors in Tables A and B. The Tables were originally designed for the proposed rule, which required bridging on all joists over 40 feet long. However, the final rule differs from the proposed rule in that only certain joists over 40 feet are required to have erection bridging. Errors were made in adjusting the Tables for the final rule; some spans in the tables were incorrectly identified and the note under the tables was not revised. There are also two typographical errors.

In addition, the definition of the abbreviation "NM" is incorrect; the correct definition is: "NM = diagonal bolted bridging not mandatory." The correct tables are printed below with the changes identified.

TABLE A. - ERECTION BRIDGING FOR SHORT SPAN JOISTS		TABLE A. - ERECTION BRIDGING FOR SHORT SPAN JOISTS - Continued
Joist	Span	Joist	Span
~~8L1~~ 8K1	NM	10KCS1	NM
10K1	NM	10KCS2	NM
12K1	23-0	10KCS3	NM
12K3	NM	12KCS1	NM
12K5	NM	12KCS2	NM
14K1	27-0	12KCS3	NM
14K3	NM	14KCS1	NM
14K4	NM	14KCS2	NM
14K6	NM	14KCS3	NM
16K2	29-0	16KCS2	NM
16K3	30-0	16KCS3	NM
16K4	32-0	16KCS4	NM
16K5	32-0	16KCS5	NM
16K6	NM	18KCS2	35-0
16K7	NM	18KCS3	NM
16K9	NM	18KCS4	NM
18K3	31-0	18KCS5	NM
18K4	32-0	20KCS2	36-0
18K5	33-0	20KCS3	39-0
18K6	35-0	20KCS4	NM
18K7	NM	20KCS5	NM
18K9	NM	22KCS2	36-0
18K10	NM	22KCS3	40-0
20K3	32-0	22KCS4	NM
20K4	34-0	22KCS5	NM
20K5	34-0	24KCS2	39-0
20K6	36-0	24KCS3	44-0
20K7	39-0	24KCS4	NM
20K9	39-0	24KCS5	NM
20K10	NM	26KCS2	39-0
22K4	34-0	26KCS3	44-0
22K5	35-0	26KCS4	NM
22K6	36-0	26KCS5	NM
22K7	40-0	28KCS2	40-0
22K9	40-0	28KCS3	45-0
22K10	~~40-0~~ NM	28KCS4	53-0
22K11	~~40-0~~ NM	28KCS5	53-0
24K4	36-0	~~30KC53~~ 30KCS3	45-0
24K5	38-0	30KCS4	54-0
24K6	39-0	30KCS5	54-0
24K7	43-0
24K8	43-0	NM = diagonal bolted bridging not mandatory f~~or joists under 40 feet.~~
24K9	44-0
24K10	NM
24K12	NM
26K5	38-0
26K6	39-0
26K7	43-0
26K8	44-0
26K9	~~45-0~~ 44-0
26K10	49-0
26K12	NM
28K6	40-0
28K7	43-0
28K8	44-0
28K9	45-0
28K10	49-0
28K12	53-0
30K7	44-0
30K8	45-0
30K9	45-0
30K10	50-0
30K11	52-0
30K12	54-0

TABLE B.- ERECTION BRIDGING FOR LONG SPAN JOISTS
Joist	Span
NM = diagonal bolted bridging not mandatory ~~for joists under 40 feet.~~
18LH02	33-0
18LH03	NM.
18LH04	NM.
18LH05	NM.
18LH06	NM.
18LH07	NM.
18LH08	NM.
18LH09	NM.
20LH02	33-B0
20LH03	38-0
20LH04	NM.
20LH05	NM.
20LH06	NM.
20LH07	NM.
20LH08	NM.
20LH09	NM.
20LH10	NM.
24LH03	35-0
24LH04	39-0
24LH05	40-0
24LH06	45-0
24LH07	NM.
24LH08	NM.
24LH09	NM.
24LH10	NM.
24LH11	NM.
28LH05	42-0
28LH06	~~42-0~~ 46-0
28LH07	~~NM.~~ 54-0
28LH08	~~NM.~~ 54-0
28LH09	NM.
28LH10	NM.
28LH11	NM.
28LH12	NM.
28LH13	NM.
32LH06	47-0 through 60-0
32LH07	47-0 through 60-0
32LH08	55-0 through 60-0
32LH09	NM through 60-0
32LH10	NM through 60-0
32LH11	NM through 60-0
32LH12	NM through 60-0
32LH13	NM through 60-0
32LH14	NM through 60-0
32LH15	NM through 60-0
36LH07	47-0 through 60-0
36LH08	47-0 through 60-0
36LH09	57-0 through 60-0
36LH10	NM through 60-0
36LH11	NM through 60-0
36LH12	NM through 60-0
36LH13	NM through 60-0
36LH14	NM through 60-0
36LH15	NM through 60-0

We anticipate making these changes through a technical correction to the standard, and also noting the changes in our upcoming revision to the steel erection directive [CPL 02-01-034 (formerly CPL 2-1.34)].

We appreciate your bringing these problems to our attention. We value our cooperative relationship with SJI and appreciate the extraordinary amount of time and effort your organization has provided throughout the steel erection rulemaking process.

If you need additional information, please contact us by fax at: U.S. Department of Labor, OSHA, Directorate of Construction, [Office of Construction Standards and Guidance], fax # 202-693-1689. You can also contact us by mail at the above office, Room N3468, 200 Constitution Avenue, N.W., Washington, D.C. 20210, although there will be a delay in our receiving correspondence by mail.

Sincerely,

Russell B. Swanson, Director
Directorate of Construction

[Corrected 6/2/2005]

['Specialized Industries']

['Steel Erection']

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