Unit E: 1.0-1.3

Question 0

What is a frame structure

Answer 0

It is made up of rigid arrangements of parts, or structural components fastened together.

Question 1

What is a solid structure

Answer 1

A solid structure has little or no space inside a and relies on its own mass to resist forces that act on it.

Question 2

What is a shell structure

Answer 2

It has a solid outer face, which may be rounded or flat in shape, and a hollow inner area.

Question 3

What is the definition of function.

Answer 3

What something is used for

Question 4

What is a force

Answer 4

It is a push or pull that tends an object to change its movement or shape.

Question 5

What does the actual effect of the force depend on?

Answer 5

The magnitude, or size of the force
The direction of the force
The location where the force is applied

Question 6

10N=?

Answer 6

10N= 1kg

Question 7

What is an external force

Answer 7

It is a force applied on a structure by something else.

Question 8

What is mass

Answer 8

It is the amount of matter in an object. The more mass in an object the greater gravitational force.

Question 9

What is static load & dynamic load on a bridge?

Answer 9

The materials used to make the bridge is a static load. Cars and trucks on a bridge are the dynamic load.

Question 10

What is a dynamic load?

Answer 10

An external force that moves or changes with time.

Question 11

What is a static load?

Answer 11

The weight of the structure and the non moving load it supports.

Question 12

What do the designers take into consideration when building a bridge?

Answer 12

What the bridge is crossing

What kinds of loads the bridge will be supporting

Question 13

What is a beam bridge?

Answer 13

The most common bridge used. A simple beam that is flat and is supported at its 2 ends

Question 14

What is a truss bridge?

Answer 14

A lightweight but strong bridge, made of trusses (triangle shaped frames) along its sides.

Question 15

What is a suspension bridge?

Answer 15

Hangs between 2 ends that hold it up. A modern suspension has tall towers on either end support the main cables holding up the bridge. The main cables are anchored in concrete at each end of the bridge. Smaller cables which support the roadway are suspended from the main cables.

Question 16

Arch bridge

Answer 16

Designed to withstand heavy loads. The dynamic load of people and other traffic causes each piece of wood or stone in the arch to push up against the piece of wood next to it. this push is eventually transported to the end supports which are embedded in the ground. the ground pushes back (resists) an the resistance is placed through all the peices creating an arch.

Question 17

How do you calculate performance?

Answer 17

Divide the weight of the bridge by how much weight it is supposed to hold.

Question 18

Arch

Answer 18

is a common shape in a structures such as bridges. An arch can support a large load because the load is carried down to the arch to the foundation. This spreads out the load.

Question 19

Beams

Answer 19

Beams are common components in a wide range of structures a simple being is a flat structure that is supported at each end. if too much weight is put on a beam in the middle it will bend in a U-shaped and may even break, changing the shape of the beam however can increase it’s strength. the shape of an I-beam gives it strength I-beams have less mass than solid beams girders or box beams are long beams in the shape of hollow rectangular prisms.

Question 20

What are the three main structural components?

Answer 20

Arches, columns, beams