For The Truss And Loading Shown, Determine The Average Normal Stress In Member , Knowing That The Cross-Sectional Area Of That Member Is And The Load Is .. The average normal stress in a truss member is calculated using the formula σ = f/a. Maximum safe value of w if the working stresses are.

The average normal stress in a truss member is calculated using the formula σ = f/a. Maximum safe value of w if the working stresses are. Truss supporting a block of weight w.