Answer Happy

for joist and beM: take live load of 30 psf and dead load of as 10 psf. take Fb as 1000 psi and Fv as 100 psi for beams. E should be 1,200,000 psi. use chart for appropriate sections.
for truss members: take compressive stress of truss memebers at 1500 psi and tensile as 800 psi. take only maximum compressive and tensile values to determine dimensions of truss members.
40 ft 10 10 RI 3oft
TOFF Tot A -40 TRI 3067