Stop in for a cup of coffee

Winds this summer have been strong, shelter has moved a couple times, i keep forgetting to screw in the anchors, guess i should get on with it.
My 30x40 is well anchored and its in the open so no snow buildup.
One thing, leave the snow on the sides, it helps prevent buckling if it does get loaded with snow.

What weight is the material Frank? Do you know?