The Three Types Of Structures

What are the advantages of mass structures?

• Mass structures are supported by their own weight. Using the layered effect can increase the strength of the structure.

• Mass structures are supported by their own weight.

• Mass structures are expensive to build.

• They are easy and inexpensive to build.

• Snowman, Beaver dam, Coral, Pyramid, Sand Castle.

What are the disadvantages of mass structures?

• They are expensive, they take a long time to construct, not always solid.

• Held in place by own weight, losing small parts has little effect, can be eroded for a long period of time.

• Bending or collapsing issues, weak joints. expensive, they take a long time to construct.

• Tiny weaknesses can ruin the whole structure, Break easily if not perfectly shaped.

Choose the examples of mass structures...

• Beaver dam, coral, snowman, pyramid, sandcastle.

• Bike, spiderweb, Skeletons, Bridges, Effiel tower.

• Igloo, Hot air balloon, vase, egg, pot.

• Football helmet, house, car.

What are the advantages of frame structures?

• Their strong, they may be simple or complex, They may be hidden or exposed, They are easy and inexpensive to build.

• They hold up their own weight, using the layer effect can increase the strength of the structure.

• Use very little building material, are inexpensive, are very easy to make, they have strong joints.

Frame structures have issues...

Fastening the parts together, limited materials available to use, bending & collapsing issues.

• True

• False

Choose the best examples of frame structures.

• Bikes, Spiderwebs, bridges, skeletons. Branches of trees.

• Reefs, snowmen, pyramids, beaver dams, sandcastles.

• Vase, egg, hot air balloon, igloo.

• Books, computers, pencils, hats, sweatshirts.

______ structures have the advantage of being inexpensive, are hollow, have higher strength with respect to their self-weight, cover large areas, simple design.

Problems with shell structure designs... (Pick all answers that apply)

• Tiny weaknesses can ruin the whole structure.

• Break easily if not perfectly shaped.

• Building material must be round/rounded.

• Limited material issues.

• Shell structures are expensive to build.

Bungie jumping is a good example of...

• Tension

• Compression

• Shearing

• Torsion

A pencil scratching and leaving a mark on a piece of paper is an example of...

• Bending

• Tension

• Torsion

• Shearing

• Pressure