# What is the science behind spaghetti bridge?

Compression pushes the bridge inward, preventing it from being pulled apart. Tension opposes compression, pulling the bridge apart and preventing it from caving in. The balance of compression and tension is what allows bridges to hold weight.

## What forces act on a spaghetti bridge?

Compression force is present on the top surface of the bridge and tension force is present on the bottom surface of the bridge. When the compression force overcomes the bridge’s ability to handle it, the bridge buckles.

## What is the strongest type of spaghetti bridge?

The 1/3 Arch Bridge held about the same weight as the 1/4 Arch Bridge. My conclusion is that the combination of arch and truss structure is the strongest bridge.

## What is the strongest bridge design?

With the bridge#s designs researched and tested, it was determined that the truss is the strongest bridge, with arch the second, and span/beam dramatically weaker than the other two.

## Is spaghetti tension or compression?

The vertical (up and down) pieces of spaghetti in your tower will be in compression, and the compression will be greatest at the bottom (base) of the tower. The horizontal (sideways) and diagonal pieces of spaghetti in the tower may be in tension.

## What is compression and tension in bridges?

Tension forces pull and stretch material in opposite directions, allowing a rope bridge to support itself and the load it carries. Compression forces squeeze and push material inward, causing the rocks of an arch bridge to press against each other to carry the load.

## What forces affect bridges?

Two major forces act on a bridge at any given time: compression and tension. Compression, or compressive force, is a force that acts to compress or shorten the thing it is acting on. Tension, or tensile force, is a force that acts to expand or lengthen the thing it is acting on.

## Where is tension on a bridge?

The very top of the beam experiences the most compression, and the very bottom of the beam experiences the most tension. The middle of the beam experiences very little compression or tension.

## What type of bridge holds the most weight?

The arch bridge can hold the most weight of the three, the deck truss bridge can hold an average amount of weight, and the beam bridge could hold the least amount of weight. This experiment tested the arch, deck truss, and beam bridges to see which could hold the heaviest amount of weight.

## What are the 4 main types of bridges?

• Beam Bridge.
• Truss Bridge.
• Suspension Bridge.
• Arch Bridge.

## How much weight can a spaghetti bridge hold?

Student pasta bridges need hold only 25 pounds to receive full credit, but any of the decently constructed ones can support 40 to 50 pounds, Ometz said. Each year there are about 10 bridges school-wide that withstand over 200 pounds. The all-time record is 795 pounds.

## What is the weakest type of bridge?

We did further research after our experiment and learned that beam bridges are actually the weakest of all bridges and suspension bridges are the strongest.

## What are the 5 main types of bridge designs?

There are five types of bridges, and these are, Girder, arch, cable, rigid framed and truss. Each has its unique features and uses. This is a bridge in its simplest and most common form.

## What is a good bridge efficiency?

While this analysis is only an estimate, an efficiency value of almost 1.0 indicates quite an efficient design. This is especially important in bridges because the dead load makes up a majority of the weight on a bridge , and because the more material a designer uses, the stronger the bridge must be.

## What is tension and compression?

Tension is a force that stretches something. Compression is a force that squeezes something together. Materials are only useful if they can withstand forces. Force flows through a material like water flows through a pipe.

## Why is spaghetti length?

Spaghetti originated in Naples and got their name from Antonio Viviani in 1842, as they looked like small pieces of string, from the Italian word “spago”. Originally they measured 50cm in length however due to time and space related needs, they have been shortened until they reached their current length of 25cm.

## What do you mean by tensile strength?

Tensile strength is defined as the “resistance to lengthwise stress, measured by the greatest load in weight per unit area pulling in the direction of length that a given substance can bear without tearing apart” (Webster’s New World Dictionary of the American Language, 1959).

## What is Torque on a bridge?

A torque is the measure of a force’s tendency to produce torsion and rotation about an axis. A torque is defined as τ=DF where D is the perpendicular distance to the force F. A rotation point must also be chosen as well.

## What is stress in bridges?

Tension is a stretching stress. When you pull on two ends of a rope in a game of tug-of-war, the rope experiences tension. Many parts of a bridge, including the cables of a suspension bridge, are under high tension. When the tension in a beam or cable is too great, it will stretch or snap apart. •

## What is buckling in a bridge?

It’s the job of the bridge design to handle these forces without buckling or snapping. Buckling occurs when compression overcomes an object’s ability to endure that force. Snapping is what happens when tension surpasses an object’s ability to handle the lengthening force.

## What 4 forces act on a bridge?

Bridges must be able to withstand several types of forces. The two most common to model bridges are compression and tension, pushing and pulling respectively. The other two are torsion (twisting) and shear.

## What supports a bridge?

Abutment: Abutments are the elements at the ends of a bridge that support it. They absorb many of the forces placed on the bridge and act as retaining walls that prevent the earth under the approach to the bridge from moving.

## How does gravity affect bridges?

Gravity has the most profound impact on a bridge. Gravity is a constant – no matter what the other conditions, gravity is always acting on a structure, trying to pull it down. Bridges are at an even more unfair advantage against gravity since they span open spaces.

## How do I make spaghetti stronger?

1. Add beams across the floor to increase the strength.
2. Bundles of spaghetti are a lot stronger than individual pieces.
3. Diagonal pieces can stop your bridge from falling over!

## Is Spaghetti good in compression?

Spaghetti cannot hold much tension or compression; therefore, it breaks very easily. Marshmallows handle compression well, but do not hold up to tension.