Question $5/$ Vraag $5($A$1-2022)$

Consider the truss shown in the figure. The truss is pin$-$supported at A and roller supported at B$.$ Show all calculations and free$-$body diagrams.

Determine the reaction forces at supports A and B$.(6)2.$ Identify all zero force members. Wrong answers will be marked negatively. $(4)$

Using Method of Sections, determine the force in members GD$,$ GH$,$ and ED and state whether they are in tension or compression. Only one section is required. $(13)$

Beskou die vakwerk in die figuur. Die vakwerk het n roller konneksie by B$.$ Wys alle berekeninge en vryliggaam diagramme.

Bereken die reaksie kragte by ondersteunings A en B $.$

$(6)$

Identifiseer alle nul$-$krag elemente. Verkeerde antwoorde sal negatief gemerk word. $(4)$

Gebruik Metode van Snitte om die kragte in elemente GD$,$ GH$,$ en ED te bereken en noem of dit in trek of druk is$.$ Slegs een snit is nodig. $(13)$

Answer $/$ Antwoord

$B_x=135$kNlarr

$A_Y=90karr$

$A_x=75kN$

ZERO$-$FORCE

MEMBERS

KL; KJ; IL; GE

$F_{GH}=50\mathrm{.}31kN(T)$

$F_{DG}=16\mathrm{.}95kN(C)$

$F_{DE}=90kN(C)$