Hello amarash, WT refers to a structural steel shape which looks like
the result of cutting a wide flange beam down the center of the web.
It looks like the letter "T". Here is the list of all structural steel
shapes from the AMERICAN INSTITUTE OF STEEL CONSTRUCTION MANUAL OF
STEEL CONSTRUCTION :
Discussion of Dimensions and Properties 1-9
W Shapes 1-10 -1-33
M Shapes 1-34 -1-35
S Shapes 1-36 -1-37
HP Shapes 1-38 -1-39
American Standard Channels (C) 1-40 -1-41
Miscellaneous Channels (MC) 1-42 -1-45
Angles (L) 1-46 -1-52
STRUCTURAL TEES (WT, MT, ST) 1-53 -1-73
DOUBLE ANGLES 1-75 -1-81
COMBINATION SECTIONS 1-82 -1-90
STEEL PIPE AND STRUCTURAL TUBING
You will notice that the 4th line from the bottom refers to all the
structural Tee shapes one of them being the WT.
Here is a definition taken from this JOIST AND STRUCTURAL GLOSSARY :
A hot rolled structural tee shape with symbol WT which is cut or split
from W Shapes.
It is my experience that Tees (WT, MT, ST) are primarily used in the
fabrication of steel trusses. However, they could be used in many
I couldn't find a chart showing the dimensions of structural Tees
online. I do have an old copy of the AISC Manual of Steel Construction
and can give you dimensions and properties of a particular WT if you
want. They range in size from WT18 x 150 to WT2 x 6.5.
I hope that this answers your question, but if there is something else
you need please ask for a clarification.
I just had another thought as I was getting ready to click on the Post
Answer button. You say "steel reinforcement" in your question. Could
you possibly be talking about steel used to reinforce concrete. If so,
WT could refer to "wire ties" used to fasten sections of rebar
together. Let me know if this is what you want info on and I will post
an answer for that. I doubt that that is what you want, but I just
wanted to make certain.