02. Determine the smallest allowable cross-sectional areas of members JK, DK, and DE of the truss shown. The working stresses are 120 MPa in tension and 80 MPa in compression. (A reduced stress in compression is specified to reduce the danger of buckling.) 40 kN 80 kN 40 kN 80 kN 6 m B D E F 6 at 4 m = 24 m SUMMARY OF ANWERS: CROSS-SECTIONAL AREA, МЕМBER mm JK DK DE

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