Problem

For this problem, consider the truss below.

a$)$ Construct an influence line diagram showing the vertical reaction at point F considering

a $1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$

c$,$ d$,$ e$,$ and f$)$

b$)$ Construct an influence line diagram showing the axial load in member BC considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

d$,$ e$,$ and f$).$ Be sure your diagram differentiates between tension and compression.

c$)$ Construct an influence line diagram showing the axial load in member BI considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

d$,$ e$,$ and f$).$ Be sure your diagram differentiates between tension and compression.

d$)$ Construct an influence line diagram showing the axial load in member GA considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

d$,$ e$,$ and f$).$ Be sure your diagram differentiates between tension and compression.

e$)$ Determine the peak axial load in member BC and the peak reaction at point F that would

result from a $4\mathrm{.}25-$kip vehicle traveling across the bottom cord of this truss.

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$8\text{'}$ Problem

For this problem, consider the truss below.

a$)$ Construct an influence line diagram showing the vertical reaction at point F considering

a $1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$

c$,$ d$,$ e$,$ and f$)$

b$)$ Construct an influence line diagram showing the axial load in member BC considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

$d,e,$ and f $).$ Be sure your diagram differentiates between tension and compression.

c$)$ Construct an influence line diagram showing the axial load in member BI considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

$d,e,$ and f $).$ Be sure your diagram differentiates between tension and compression.

d$)$ Construct an influence line diagram showing the axial load in member GA considering a

$1$ kip load pointed downward that moves along the bottom cord of the truss $($nodes a$,$ b$,$ c$,$

$d,e,$ and f $).$ Be sure your diagram differentiates between tension and compression.

e$)$ Determine the peak axial load in member BC and the peak reaction at point F that would

result from a $4\mathrm{.}25-$kip vehicle traveling across the bottom cord of this truss.