On Wed, 27 Dec 2017 09:05:17 -0500, Clare Snyder
wrote:

On Wed, 27 Dec 2017 07:28:17 -0500, "Jim Wilkins"
wrote:

wrote in message
...
Installing structure for shed with galvalume roof top. How to
calculate the material strength which is best suitable. Shed should
resist with air flow at 150 km/hr

I sized the wooden posts, beams and purlins of my
corrugated-steel-roofed sheds for a snow load of 60 pounds per square
foot. They have also held up well to hurricanes and large falling oak
trees.
http://www.fabral.com/media/1965/sto...tall-guide.pdf

There are many load tables and calculators like this on line.
https://www.mycarpentry.com/rafter-span-tables.html

Pressure-treated wood is often southern yellow pine (SYP).
-jsw

and just as aften it is some kind of spruce or fir, or even tamarak.
Anything with needles instead of leaves is fair game - - -

I wasn't aware that SPF came in channel or square pipe[sic], guys.
And why aren't you doing this guy's homework for him, anyway? He
needs all his time to party on Christmas Break. Oops, sorry. That's
Holiday Break. Can't be religious. (unfair to Muslims/atheists)

I'd go with SIPs nowadays. Pre-insulated and you can hang a bit of
shelving on the inside without a problem. Rock solid, too.

For a metal framing, I'd likely go square tube. Jus'cuz. What size
and wall thickness should I use, scplpurchase3? I won't tell you the
use for the building, what size it will be, what weather it's in, or
whether it will be insulated, either. Those details might completely
change your advice.

"I want you to build a boat for me. How much will it cost?"

--
Do not let your fire go out, spark by irreplacable spark.

In the hopeless swamps of the not quite, the not yet, and
the not at all, do not let the hero in your soul perish
and leave only frustration for the life you deserved, but
never have been able to reach.

The world you desire can be won, it exists, it is real,
it is possible, it is yours.
-- Ayn Rand