The 3 "x 6" (nominal section) lower chord of a truss has an expected loading which results to 3.0 kN-m for bending and a tensile force equal to 30 kN. Connections are assumed to be pinned the total span is 4.5 m. Assume that the lateral buckling is prevented by the ceiling. Properties of Liusin Wood: Fb=Ft=25.0 MPa, E=9.36 GPa. Consider actual size 2.75" x 5.75" (69.85 mm x 146.05 mm). Consider normal load duration and dry service condition visually graded sawn lumber. Determine the following in MPa:

a) Ft' Blank 1

b) ft 2.94

c) Fb* Blank 3

d) Fb** Blank 4

e) fb Blank 5

f) Adequacy (Type Safe or Not Safe) Blank 6