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STRONG STRUCTURES

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TRY IT: Corrugation

Get a regular piece of paper

How much weight can you make it support on its short top side

CAN YOU BEAT �MR. STAV?

I made it support a 300 page hardcover book!

(I used NO tape)

STUDENT RECORD:

10 Books (Carter – 2023)

9 Books (Jasmine - 2021)

9 Books (Najaela - 2021)

13 Smaller Books (Demi - 2021)

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Strong Structures

BEAM

TRUSS

ARCH

DOME

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1) Beam

  • a beam is a horizontal surface that is designed to support a load
  • the strength of the beam is determined by the material that the beam is made of
    • e.g. a wooden beam will be able to hold �less weight than a steel beam

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Strengthening Beams

  • I-beams are commonly used in construction applications
  • corrugation (multiple folds) within a beam increases stability
  • rebar (reinforcement bars) are made of steel and imbedded in concrete to increase its tension strength

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TRY IT: Corrugation

How much weight can you make it support on its short top side

Get a regular piece of paper

MRSTAV

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Strengthening Beams

  • I-beams are commonly used in construction applications
  • corrugation (multiple folds) within a beam increases stability
  • rebar (reinforcement bars) are made of steel and imbedded in concrete to increase its tension strength

​

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Beams

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2) Truss

  • a truss is a network of beams arranged in triangles
    • the truss works by distributing the force of a large load across a beam or do a different, well-supported point
      • different beams in the truss undergo different forces (compression or tension) depending on their position

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3) Arch

  • an arch is a curved structure used to support loads
  • the arch works by distributing the force on the top of the arch down the sides of the arch and eventually to the ground

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3) Arch

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4) Dome

  • a dome is another curved structure that supports loads
    • the curve is three dimensional on a dome and exists in a plane on an arch
  • the dome also works by distributing the force from the top down along the sides of �the arch to the ground

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Dome

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Minnesota Metrodome

TO BE CONTINUED!!

(next class)

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Strong Structures

BEAM

TRUSS

ARCH

DOME

Summarize each one in 1 sentence

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