Steel Joist 20 H7 1

[Vfigueroa]

We are evaluating a series of cracks that has been developing during the last month on a lightweigth mezzanine structure. The structure was built on 1985 and five years ago a series of cracks developed on the 2.5 thin concrete slab. The construction drawings describes the joist elements as 20 H7 supporting a 2.5 inches concrete slab and a wire mesh reinforcemnt. The mezzanine slab was rated at that time capable to resit live loads up to 125 psf.

Where can I find the mechanical properties, load tables or any information on that specific type of steel joist.

 

[UcfSE]

The Steel Joist Institute

75 YEAR MANUAL 1928 - 2003

http://www.steeljoist.org/publications/

 

[JAE]

SJI has the 75 year manual available which has all the info you need for a 20H joist. This is a very good, valuable document you should have.

SJI Publications

 

[archeng59]

the manual is a "must have".

 

[UcfSE]

JAE: Great minds think alike?

 

[JAE]

I bet we hit the SUBMIT button within a second of each other.

 

[sda97]

Values from SJI - 1978

20H7: Nominal Depth = 20 in
Resist Moment = 499,000 in-lbs
Max End Reaction = 5400 lbs
Approx WT = 10.7 lbs
Maxmum Tensile Stress= 30,000 psi

If you have the span, I can give you the allowable loads.

 

[smullenpe]

I went to SJI seminar and got education credits and free 41st Edition manual for free. It was a great seminar and the breakfast and lunch wasn't bad either. I went to one in Long Beach, California although I live and practice in NY. They have it all throughout the country at various time. Check them out. It was definitely worth the money for me.