3. Plot the bending moment diagrams for the following beams using the principle of superposition and determine the bending moment within section C. 题3.13 图 题3.14 图 题3.15 图 题3.16 图 题3.17 图 题3.18 图

Extracted text: 3. Plot the bending moment diagrams for the following beams using the principle of superposition and determine the bending moment within section C. 题3.13 图 题3.14 图 题3.15 图 题3.16 图 题3.17 图 题3.18 图


Extracted text: 3 kN/m 2 kN/m 10 kN 13 kN CE D E 2 m 2 m 2 m 2 m 2 m2 m2 m +2m 题3.19 图 题3.20 图 |4 kN 2 kN/m |2 kN 2 kN/m PB E D 4 m 4 m 2 m 2 m 2 m m to 题3.21 图 题3.22 图