Question

to submit tenders for a structure to help people safely cross the river at KwaDukuza The Thukela Municipality placed a tender request in the newspaper asking contractors village. Municipalities are not allowed to choose a contractor without giving as many contractors as possible a chance to apply. This is to stop anyone from being favoured over others, and to prevent corruption. Each contractor writes a tender document, which is a description of their plan for the project and shows how much they will charge to complete the work. The job is given to the contractor who presents the best plan at the lowest price. You are going to build a structure to help the community. Read the story again and then investigate the different bridges below to decide which structure will be the best solution for the problem.​

Answer 1

ANSWER : PONTOON BRIDGES

OR SUSPENSION BRIDGES

PONTOON BRIDGES:

take a bunch boats or rafts

tie them together

put a path/road on top of them

if a boat can carry a truck then so can a pontoon bridge

armies use them

smaller cost & safe

SUSPENSION BRIDGES:

source of strength its flexibility to wind,gravity, physical considerations

can be made of steel

but even cheaply with rope or jute etc.

When considering the strength in terms of load-bearing capacity and versatility, truss bridges are often considered to be the strongest type of bridge. Truss bridges are made up of interconnected triangles that distribute weight evenly across the structure, making them highly resistant to bending and compression forces. They are also relatively easy to construct using simple materials such as wood or steel, which may make them a more practical option for underserved communities.

That being said, arch bridges can also be quite strong and durable, as they rely on the inherent strength of their curved shape to distribute weight. Suspension and cable-stayed bridges, on the other hand, require more advanced engineering and construction techniques, and may be less feasible for communities with limited resources. Beam bridges are typically the simplest type of bridge, but may not be as strong or versatile as truss or arch bridges.

ChatGPT

Answer 2

In general, the choice of bridge design will depend on various factors such as the location, the environment, the length of the span, the expected traffic, the budget, and the construction time. Different types of bridges, such as beam bridges, arch bridges, suspension bridges, and cable-stayed bridges, have different strengths and weaknesses, and are suitable for different situations.

Some factors to consider when choosing a bridge design include:

Span: If the river is wide, a longer span bridge such as a suspension or cable-stayed bridge may be required.

Location: The local geology, topography, and environmental conditions may dictate the type of bridge that can be built.

Budget: Some bridge designs are more expensive than others. A beam bridge may be the most cost-effective option.

Traffic: If the bridge will carry heavy vehicles or high volumes of traffic, a stronger, more durable bridge such as a cable-stayed bridge may be required.

Ultimately, the choice of bridge design will depend on a careful evaluation of these factors and the needs of the community. It is important to consult with experts and stakeholders to ensure that the chosen design is safe, effective, and meets the requirements of the project.

Step-by-step explanation: