Mar 8, 2004 #1 ick2 Structural May 16, 2003 41 0 0 CY I have a building in Manhattan from the early 1900's. It is steel construction with flat arch floors. What could be the structural steel members ultimate capacity?
I have a building in Manhattan from the early 1900's. It is steel construction with flat arch floors. What could be the structural steel members ultimate capacity?
Mar 8, 2004 #2 JAE Structural Jun 27, 2000 15,432 0 36 US There were numerous types of steel in use in the early 1900's - per AISC, the governing specification would be ASTM A9 - which had: Rivet Steel - Fy=25-30 ksi Fu=50-60 ksi Medium Steel - Fy=30-35 ksi Fu=60-70 ksi These above values are for dates up to about 1908. For dates up to 1931: Structural Steel - Fy = 27.5 to 32.5 ksi Fu = 55 to 65 ksi Rivet Steel - Fy = 23 to 28 ksi Fu = 46 to 56 ksi Source: AISC Rehabilitation and Retrofit Guide, (Steel Design Guide Series No. 15), Feb 2002. You would be wise to get sample coupons from steel in the building and have them tested. Use the above values for preliminary work only. Upvote 0 Downvote
There were numerous types of steel in use in the early 1900's - per AISC, the governing specification would be ASTM A9 - which had: Rivet Steel - Fy=25-30 ksi Fu=50-60 ksi Medium Steel - Fy=30-35 ksi Fu=60-70 ksi These above values are for dates up to about 1908. For dates up to 1931: Structural Steel - Fy = 27.5 to 32.5 ksi Fu = 55 to 65 ksi Rivet Steel - Fy = 23 to 28 ksi Fu = 46 to 56 ksi Source: AISC Rehabilitation and Retrofit Guide, (Steel Design Guide Series No. 15), Feb 2002. You would be wise to get sample coupons from steel in the building and have them tested. Use the above values for preliminary work only.
Mar 9, 2004 Thread starter #3 ick2 Structural May 16, 2003 41 0 0 CY thanks JAE. what do you mean by rivet steel? Upvote 0 Downvote
Mar 9, 2004 #4 JAE Structural Jun 27, 2000 15,432 0 36 US The steel used in the making of rivets (prior to the advent of bolts) Upvote 0 Downvote