1. $F_{AC} = 375\;lb$, $F_{BC} = 780\;lb$, $F_{AB} = 300\;lb$
3. $F_{AB} = F_{BC} = 31.5\;kips$ (T), $F_{AD} = 335.7\;kips$ (C), $F_{BD} = 10.8\;kips$ (C), $F_{CD} = 33.3\;kips$ (C)
5. $F_{AD} = 318\; lb$ (C), $F_{AB} = 225\; lb$ (T), $F_{BC} = 225\; lb$ (T), $F_{BD} = 0$, $F_{CD} = 318\; lb$ (T)
7. $F_{DC} = 1.34\; kN$ (C), $F_{DE} = 1.20\; kN$ (T), $F_{CE} = 0$, $F_{CB} = 1.34\; kN$ (C), $F_{EB} = 1.27\; kN$ (C), $F_{EA} = 2.10\; kN$ (T)
9. $F_{AD} = 849\; lb$ (C), $F_{AB} = 600\; lb$ (T), $F_{BD} = 400\; lb$ (C), $F_{BC} = 600\; lb$ (T), $F_{DC} = 1130\; lb$ (T), $F_{DE} = 1600\; lb$ (C)
11. $F_{CB} = 8\; kN$ (T), $F_{CD} = 6.93\; kN$ (C), $F_{DE} = 6.93\; kN$ (C), $F_{DB} = 4\; kN$ (T), $F_{BE} = 4\; kN$ (C), $F_{BA} = 12\; kN$ (T)
13. $F_{AB} = F_{FH} = 1500\; lb$ (C), $F_{AC} = F_{CE} = F_{EG} = F_{GH} = 1200\; lb$ (T), $F_{BC} = F_{FG} = F_{BD} = F_{DF} = 1000\; lb$ (C), $F_{BE} = F_{EF} = 500\; lb$ (C), $F_{DE} = 600\; lb$ (T)
14. $F_{CF} = 1980\; lb$ (T), $F_{FE} = 800\; lb$ (T), $F_{BC} = 2200\; lb$ (T)
15. $F_{EF} = 600\; lb$ (C),$F_{CF} = 346\; lb$ (T), $F_{BC} = 346\; lb$ (T)
16. $F_{BD} = 216\; kN$ (T), $F_{DE} = 270\; kN$ (T)