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RE: Old Joist Type

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Have you contacted SJI directly?  There is an online form located on the 
SJI website called the Joist Investigation Form.  I filled one out a about 
last year for a roof joist on a 1960’s tilt-up building, and they sent me 
 a pdf of an old manual.  I was able to identify the existing roof joist. 
To pin down the joist, I took field measurements using a micrometer for 
angle thicknesses, diagonal diameter, etc.  It sounds like your joist has 
similar cross section properties as the joists in my project.  Below is a 
link to the Joist Investigation Form.

Good luck.

Ricardo G. Gonzalez, P.E.

C S W | S T 2

CSW/Stuber-Stroeh Engineering Group, Inc.

45 Leveroni Court, Novato, CA  94949

Civil Engineering ∙ Structural Engineering

Planning ∙ Land Surveying & Mapping

main: 415-883-9850          fax: 415-883-9836

direct: 415-884-6442        e-mail: RicardoG(--nospam--at)

links: Web Site ∙ Blog ∙ LinkedIn ∙ Facebook ∙ Twitter

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of Dilip Patel Sent: Wednesday, September 19, 2012 4:00 PM
To: seaint-seaosc(--nospam--at)
Subject: [SEAINT-SEAOSC] Old Joist Type

I need to determine joist property with following members.

Top & bottom chord: W shape, 5- 1/2"x1".

Digonals 1" diameter pipes, crimped at panel points., 30" c/c panels 
points, no verticals. About 30" jost depth, 40' joist span, 5'-0" o/c 
spacing, Roof joist.

It appears propriety shape, not listed in SJI 60 year manual.

Anyway to locate manufacturer to determine proprties.


Dilip Patel, PE

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