I am building a mixed species timber frame home. One of the species is yellow (tulip) poplar, but my copy of the NDS does not have design values for yellow poplar timbers 5 X 5 and larger. Can someone tell me the design values (bending Fb, shear parallel to grain Fb, compression perpendicular to grain Fc, compression parallel to grain Fc, and modulus of elasticity E) for #1 yellow poplar posts and timbers?