Question

1,You might have observed as you walk on the road that there are lines on it. These are called expansion joints. What is the importance of these expansion joints in concrete or steel roads?

2,It is common to see cooking utensils made of metal and wood and comparing the price of the utensils, metal utensils are much cheaper compared to wooden utensils. Why do you think so? *

Answer 1

Answer:

1.Bridge expansion joints are designed to allow for continuous traffic between structures while accommodating movement, shrinkage, and temperature variations on reinforced and prestressed concrete, composite, and steel structures

2.Because wooden utensils dont scratch the surface of your pan, it doesnt conduct heat, they are comfortable to use, and eco-friendly

Explanation:

Brainliest pls

Answer 2

1. Expansion joints are used for control the irregular expansion or contraction of objects (usually metal) during certain seasons like summer, winter etc.

• Expansion joints or bridge joints are present usually in metal structures like train tracks, certain machines, etc.

• These expansion joints can be a hollow void or a gap filled with a relatively elastic material which can conform easily.

• These expansion joints are used to maintain the structure of metal heavy objects like train tracks so that they can still retain their functionality irrespective of metal expansion or contraction due to seasonal changes.

2. Metal utensils are usually cheaper than wooden ones as the wooden ones need to be made from proper good quality wood to be functional, while metal ones can be recast and sold for lower prices.

• Metal utensils conduct heat very easily and thus take less time to cook food.

• They can be recycled and recast or even re-plated and are thus cheaper than wooden utensils which are not usually recycled.