Problems: Chapter $6$ Exercise $2$

Deliverables: Submit single pdf to Bridges folder and hardcopy in class.

Present work clearly in labeled steps.

Complete graphic solutions of the two trusses in Exercise $2$ noted above.

Draw a separate diagram of each truss labeling it with $JUS{T}_{?}$ member forces and their characters

$($for clarity, do not show any other information$)$

Compare the member forces in each truss in a few written sentences.

Remember to:

Label all diagrams properly.

Include appropriate scales.

Find reactions.

Check reactions.

Evaluation: You will be evaluated on the thoroughness, accuracy, completeness, labeling and

neatness$/$clarity of your presentation.

Note: Please submit a complete, well$-$organized submission.Exercises

Design a trussed roof for an art exhibition room that is $24$ ft wide and $36$ ft long.

with walls that are uniformly II ft tall. Shape the wooden trusses in such a way that

clerestory windows admit light to the space from one direction only. Assume that

the total of live and dead loads is $50$ lb per square ft of horizontal projection.

Find and campure the foeces in thic members of the gabte insses in Figune $6\mathrm{.}50,$

Figure $6\mathrm{.}51$ depicts a steel truss for a sloping footbridge. Find the forces in its

members.

$($a$)$

Determine the effects of the horizontal and vertical loa

in Figure $6\mathrm{.}52.$

Find the forces in the cantilever truss in Figure $6\mathrm{.}53.$

Prepare a preliminary design for a footbridge to span a dit

abutments on either side of a stream. The bridge will hav

of $44$ in $.$ Total live and dead loads have been estimated at

With the aid of a handbook of standard steel shapes, assign $.$

members, using square steel tubing with welded joints.

$($b$)$