In article .com,
(marson) says...

Here is a link for the engineering of an attic truss. Note the splice
in the bottom chord. Note the bottom chord loading of 40 psf.
http://www.wsitruss.com/Prod_Frame.asp?Truss=A248. Why would you use
an attic truss if you couldn't use the space created for a room?

You need to learn to read a spec sheet. The bottom chord is designed
for a 10 psf live load (note 9).

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