can someone help me with problems 6.2-6.4. i will rate

Note: In Problems 6.1 through 6.5, determine the adjusted reference design values and the strength capacities for the following members. In all cases, consider dry-service conditions, normal tem- perature range, and no-incision application. In practice, all loading combinations must be checked. However, in these problems only a single load condition should be considered for each member, as indicated in the problem 6.1 Floor joists are 2 in. x 6 in. at 18 in. on center (OC) of Douglas Fir-Larch #2. They support dead and live loads. 6.2 Roof rafters are 2 in. x 8 in. at 24 in. OC of Southern Pine #2. The loads are dead load and roof live load. 6.3 Five floor beams are of 4 in. x 8 indimension lumber Hem Fir #1, spaced 5 ft. apart. The loads are dead and live loads. 6.4 Studs are 2 in. x 8 in. at 20 in. OC of Hem Fir #2. The loads are dead load, live load, and wind load