# RE: Old Steel Section Properties

• To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
• Subject: RE: Old Steel Section Properties
• From: "Canitz, Charles F NAB02" <Charles.F.Canitz(--nospam--at)nab02.usace.army.mil>
• Date: Wed, 28 Mar 2001 16:40:40 -0500
```Kip -

ST4WF20
Wt = 20 plf
Area = 5.88 in^2
Depth = 4.13 in
Flange width = 8.077 in
Flange thickness = 0.558 in
Stem thickness = 0.365 in
d/t = 11.3
Ix = 5.8 in^4
Sx = 1.71 in^3
rx = 0.99 in
y = 0.74 in
Iy = 24.5 in^4
Sy = 6.05 in^3
ry = 2.04 in

ST4WF10
Wt = 10 plf
Area = 2.94 in^2
Depth = 4.07 in
Flange width = 5.268 in
Flange thickness = 0.378 in
Stem thickness = 0.248 in
d/t = 16.4
Ix = 3.66 in^4
Sx = 1.13 in^3
rx = 1.12 in
y = 0.83 in
Iy = 4.25 in^4
Sy = 1.61 in^3
ry = 1.20 in

Charlie
-----Original Message-----
From: Kipp.A.Martin(--nospam--at)us.mw.com [mailto:Kipp.A.Martin(--nospam--at)us.mw.com]
Sent: Wednesday, March 28, 2001 2:46 PM
To: seaint(--nospam--at)seaint.org
Subject: Old Steel Section Properties

I am working on a project at the Dalles Dam between Washington and Oregon.
The
drawings that I am looking at are dated 1955.  One detail calls out a steel
section at eithe "ST4WF10" or "STAWF20".  I assume that this is a T cut from
a
Wide Flange.  I don't see any 20" wide flanges in any of my manuals or
catalogs.
Also, assuming that the detail is drawn to scale, the section does not
appear to
be 10" deep.  It might be 4".  Could that be what the 4 in the designation
means?  Could this be a 4" deep T cut from a 20" wide flange?  Can any one
give
me the dimensions on this section, i.e. flange width and thickness, web
depth
and thickness, etc.?

Thank you,

Kipp A. Martin, S. E.
Portland, Oregon

```