PT 1.1 Engineering goals

Problem Statement

There were lots of bridge that were faulty in the past few years of construction, for example, the Fourth Road bridge. Many of these bridges broke down due to the steelwork, or the architectural design and from there we thought, how can we make a bridge that is strong and stable and can hold heavy weights.

  1. How do we design a bridge which is light but yet can still support the weights?
  2. How can we design the bridge in a more effective way which will reduce the number of resources that we use?
  3. How can we design a bridge with different truss patterns?
  4. How can we design our bridge in such a way that it would be affordable by every country?
  5. How can we build the bridge such that the mass of the weights is evenly spread out ?
  6. What are the different shapes to use when designing the bridge?
  7. How do we ensure that the dimensions of the bridge doesn't affect the weight bearing of the bridge?
  8. How does the weight of the bridge effect the amount of weights that it can carry? 

Specific Requirements 

1. The entire bridge has to be made from standard size ice cream sticks only the estimated specifications of which are as follows:

     Length: 113mm
     Width: 10mm
     Thickness: 2mm

2. The sticks can be cut, but must be joined with commonly available glue only.

3. The bridge must have a minimum length of 550 mm and have a maximum length of 650 mm

4. The bridge cannot exceed 200 mm in height, 120 mm in width and 500 g in weight.

5. The load will be applied downwards via a loading bar, placed in the centre of the deck.

6. The bridge must have a deck for vehicles to travel on so as to simulate real life.

7. The bridge must be constructed to allow the loading bar to be placed across the centre of the deck.

8. The loading will stop when any part of the bridge breaking or total collapse, whichever happens first.

9. Structural efficiency is calculated by dividing the load supported in kg to the mass of the bridge in kg.

10. All construction and materials requirements will be checked prior to testing by the judges. Bridges that fail to meet these specifications will be disqualified. 


There are a few requirements to consider when designing a bridge

The weight (How heavy is the bridge and does it takes lots of resources to build it?)
The Strength (How much weight it can handle before it starts breaking down
The Durability (How durable is the bridge when it is pulled down for a long period of time)
The Size (Is it long enough to fit the gap? Is it wide enough so that the force applied is even spread?)
Availability of materials (Enough resources and cost to build it?)

All of these requirements links up to one another so these are the main key ideas to take note of

Engineering Goals

  1. To build a strong bridge design to help engineers in future
  2. To build a bridge that is not very expensive so that all countries are able to build it 
  3. To build a strong bridge with a truss pattern of our own while meeting the design criteria 
  4. To investigate which type of bridge has the greatest weight bearing capacity  
  5. To find out what is a better and more effective way to use lesser materials and get stronger bridges
  6. To reduce the costs of construction of the bridge while retaining the efficiency 
  7. To carry at least 30kg of weight using our bridge 
  8. To allow constructors to reduce the amount of natural resources being used to allow  to build a strong and green bridge using our design 

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