Question

Determine the force in all members of the roof truss below. State whether each member is in tension or compression. Don't try to cram the work on this one sheet. You may use Method of Joints or Method of Sections. 1.6 m 1.6 m 1.6m 16 m 1.6 m 1.6 m 24 kN 1.2 kN 2.4 kN 2.4 kN IH 1.2 kN 2.4 K 0.9 m 1.8 18m 1.8m 1.8m 2.4m

Answer 1

2-U m 0.9 Flest Col culativ ne Sapportesetion ca p Taking momeni dbeeut A 312 kN Calculation十member hore rentile force is taken possitivse っ.landl compressi ve Dorce [l tak enan nerative

Toint f RE 2 4.2 orikontal Sum 아 vertical Sam。 fosce force s。 43) (26 RFE =123 KN Tengileforce Compmewive At Joint ta nøこ1.ctane 0-% 2 af Sumo 0-2

Su Combrisive empressive CyE = 1.53 KN tentile forta At Toint 3-C 14-03 。 EA 1-03 0-394EH+0-24 E D from (D and (1)

Toi nt ane 2.nu'04S H t 2 4418)-32 FHG 63 u 3 H E um o rgonHl forces) Sum ot venti al fortzd HE from @リand Gり HI 2163kN| Compre sti ve FHD362 esile force - се C0 oC 92.89 43-99 140 Sum hosiyon tal force o

Sum ventical for ce-o 1 H SIn43-41 01 S foc sinuos foe 3-62sIn n lu inu ot -36 Compre 8sive At Joint A FA O 3-6 R A

verti car for CE FA 0-41 at pint heme FLAF At Toine 3 eno Fesce membe joint cs 0-9 cE 3-6 CD も-3.2

V l nvetrcal force CI Sin S34 233 K N Camprenive 14 60 14 O-