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I think they have to be painted because if you do not paint something that is steel than it will rust beyoned repair.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoit reacts with air easily and so it rusts and corrodes. If there is a layer of paint, it is not contact the air as much.
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What impact can mild steel have on the environment?
Mild steel pipes must be coated or painted so that it won't corrode. If it did break down, this would mean that not only does the pipe affect the environment, but the material in the pipe as well.
What materials go into building a bridge?
Bridges are very complex structures that must be carefully engineered using long-lasting and strong materials. Some of the materials that are used for bridge building includes stones, cement, steel, wood, and composites.
What are the golden gate bridges materials?
The main materials used to make the Golden Gate Bridge were 75,293,000 kg of steel; two main cables, each made of 27,572 strands of wire; 600,000 rivets in each of the towers; and concrete.The steel was made in New Jersey, Maryland and Pennsylvania and shipped through the Panama Canal.
What are the advantages and disadvantages of steel as a structural material?
Advantages:Maintains its strength indefinitely- does not deteriorate with age like timber and concrete, provided its surface is protected from rust.Very strong and flexible - steel framed houses are ideal in cyclone/hurricane prone regions. The best material for bridges and skyscrapers.Can be recycledStructures can be prefabricated (welded) in large sections, and lifted into place with cranes and bolted together- buildings can be erected quickly. Many section types are made (square, tube, H-section, etc).Versatile- Radical architecture is possible using steel.Disadvanages:Heavy and thus expensive to transport, susceptible to corrosion- steel bridges must be painted continuously, particularly in a salty environment.Has a high expansion rate in changing temperatures, and this must be allowed for in the engineering. In conditions of repeated stress and changing temperatures, can suffer fatigue and cracks, and more corrosion.Energy intensive to produce.
A fee you must pay as on some bridges?
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Why do you use steel to make bridges?
Lets' look at this from a simplistic point of view. The predominant factors when dealing with a bridge is strength and weight. The strength of the bridge is how much load it can handle. The weight is how much the bridge weighs before loads (such as cars) are applied. The weight of the construction material must be included when considering the total strength of the bridge. For instance, if a bridges strength is 110 pounds, and the weight of material is 100 pounds, then you can only put 10 pounds on the bridge before failure. Bridges can be made from any material. Wood is commonly used on hiking trails, Composite (Plastics) have been used on some small bridges. However, the two most popular are Steel, and reinforced concrete (Reinforced Concrete has steel rods inside the concrete to increase the strength). The reason for this is because of the incredible strength of the steel or concrete per pound of material. This allows for a very strong structure that does not generate a lot of weight. This means that the load carrying capacity of the bridge is maximized. Furthermore, the structural design of a bridge allows for load shifting. This explains the grid pattern above, or below, some bridges, the big arch under some concrete bridges, or the characteristic look of suspension bridges.
What are the bridges made of?
Usually bridges are made of steel and/or concrete. Concrete bridges have steel reinforcement embedded within the concrete, because concrete is weak in tension. Steel is strong in tension and compression, which makes suspension bridges practical. Every nut and bolt, steel member size and thickness, and every other component on a bridge has been located and sized by using mathematics to calculate all the forces applied to each component of the bridge, which must be resisted by the materials used.
Why do many bridges look not look the same?
Some materials must be used in a specific area, and the battle to make the sturdiest bridges at the lowest cost rages on.
Who is allowed to be painted in the archibald prize?
a man or women is allowed to be painted they must be distinguished in art, letters, science or politicsalso.... gemma is awesome
How many bridges did the Roman Empire build?
It is not known. The Romans must have built thousands of bridges because the empire was massive, it covered many mountain areas and it was crossed by many rivers. The bridges were built by the Romans, not the Roman Empire.
How do we use steel in sentence?
He must have nerves of steel.The steel marbles are usually ball bearings.I hope this "smart car" has a steel frame.
Must metal skewers for cooking be stainless steel?
Stainless steel is the best because it does not oxidize (rust).
