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Engineering Do Now

Engineering Do Now. Include force, acceleration and mass at least once each in your answers. Why did some of the masking tape bridges break? Why did some of the masking tape bridges NOT break? If a person weighs 140 lbs, what is his/her load on the structure?. Shear, Axial & Torsional Loading.

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Engineering Do Now

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  1. Engineering Do Now Include force, acceleration and mass at least once each in your answers. • Why did some of the masking tape bridges break? • Why did some of the masking tape bridges NOT break? • If a person weighs 140 lbs, what is his/her load on the structure?

  2. Shear, Axial & Torsional Loading Aim: What different types of loading do civil engineers worry about?

  3. Review: Force DEFINITION: a push or pull that can cause a change in motion. Changes in motion… …speed up …slow down …change directions

  4. At rest… …accelerating downward

  5. At rest… …accelerating downward At rest – all forces are in EQUILIBRIUM (cancel each other out) NO ACCELERATION Accelerating downward – forces out of balance (do not cancel each other out)

  6. Forces on Structures HW Review

  7. Forces on Structures THREE TYPES OF LOADING • Axial • Shear • Torsional

  8. AXIAL Forces are applied parallel to the structure of the material TENSION

  9. SHEAR Forces are applied perpendicular to the material

  10. TORSIONAL Force is applied in a twisting motion to the material

  11. OVERVIEW

  12. CHECK FOR UNDERSTANDING What types of loading are pictured here: The ropes of a swing The ankles of the baby The towel The seat of a swing

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