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Why do sidewalk have built in cracks every few feet?
Sidewalks have built-in cracks, often referred to as expansion joints, to allow for the natural expansion and contraction of the concrete due to temperature changes and moisture. These joints help prevent the concrete from cracking unevenly, which can lead to structural damage. Additionally, they facilitate drainage and can help manage the natural settling of the ground underneath. Overall, these cracks are essential for maintaining the longevity and safety of the sidewalk.
How much concret for sidewalk 5 feet wide 120 feet long depth of 6 inch?
To calculate the volume of concrete needed for a sidewalk that is 5 feet wide, 120 feet long, and 6 inches deep, first convert the depth to feet: 6 inches is 0.5 feet. The volume in cubic feet is calculated as width × length × depth: 5 ft × 120 ft × 0.5 ft = 300 cubic feet. Therefore, you will need 300 cubic feet of concrete for the sidewalk.
How much cement is needed for sidewalk that is 4 inches thick 3 feet wide and 40 feet long the cement is sold for 76 per cubic yard?
To calculate the amount of cement needed, first convert the dimensions of the sidewalk into cubic yards. The sidewalk's volume is ( \frac{4}{12} ) feet thick × 3 feet wide × 40 feet long = 40 cubic feet. Since there are 27 cubic feet in a cubic yard, the volume in cubic yards is ( \frac{40}{27} \approx 1.48 ) cubic yards. At $76 per cubic yard, the total cost would be approximately ( 1.48 \times 76 \approx 112.48 ).
How many square feet of a 4 inch sidewalk to a cubic yard of concrete?
81 Square feet.
Please show work. A sidewalk is 20 feet by 14 feet The width of the sidewalk is 2 What is the outside perimeter?
A 2-foot border around a 20 x 14 area makes the area 24 x 18 making the perimeter 84 feet.
How many feet before an expansion joint is installed in concrete sidewalk?
10 feet.
Why do sidewalk have built in cracks every few feet?
Sidewalks have built-in cracks, often referred to as expansion joints, to allow for the natural expansion and contraction of the concrete due to temperature changes and moisture. These joints help prevent the concrete from cracking unevenly, which can lead to structural damage. Additionally, they facilitate drainage and can help manage the natural settling of the ground underneath. Overall, these cracks are essential for maintaining the longevity and safety of the sidewalk.
Sidewalks are built with cracks because in the summer something occurswhat is it?
they r called contraction joints. then every few of those then expansion joint. concrete is going to crack, so make it crack so it can't be seen,under the man made ones. concrete tends to crack symmetrically. so if ur sidewalk is 3 feet wide the contraction joints will be every 3 feet. then expansion joint, 3/4 inch with expansive material, every 4th one.
What is the maximum size a concrete slab can be without the need for expansion joints?
The maximum size for a concrete slab without needing expansion joints is typically around 100 to 150 feet in either direction. Beyond this size, expansion joints are usually necessary to prevent cracking due to temperature changes and shrinkage.
What is meant by expansion joint and Where expansion joints are used in refinerieswhythis type joint used now?
Expansion joints are used on long runs (over 100 feet) of pipe or ducts where the expansion of steel will create stress on the pipe or its supports. for every 1 degree change in metal temperature the pipe will expand 6 millionths of a foot per foot of length. on a steam pipe 400 foot long carrying 750 degree steam this expansion would amount to a change in length of the pipe of 1.632 feet. this could tear down the supporting structure if this expansion weren't relieved by an expansion joint every 100 feet. expansion joints could be flexible corrugated pipe, reinforced rubber sheet, sliding pipe joints, or expansion loops, among other things.
How much concret for sidewalk 5 feet wide 120 feet long depth of 6 inch?
To calculate the volume of concrete needed for a sidewalk that is 5 feet wide, 120 feet long, and 6 inches deep, first convert the depth to feet: 6 inches is 0.5 feet. The volume in cubic feet is calculated as width × length × depth: 5 ft × 120 ft × 0.5 ft = 300 cubic feet. Therefore, you will need 300 cubic feet of concrete for the sidewalk.
How many cubit feet in a four by twenty five feet sidewalk?
Impossible to answer - without knowing the depth of the sidewalk !
Where i use the expansion joint?
For sidewalk code is generally every 30 ft. For a masonry wall it is also every 30 ft. Place celotex every 30 feet on a sidewalk and this will eliminate buckling of the slab. www.masonryworktools.com
When you walk bearfoot across a hot sidewalk you feel heat on your feet. explain What is happening with the molecules in both the sidewalk and your feet and in which direction thermal energy is moving?
As you walk barefoot on a hot sidewalk, the sidewalk molecules vibrate more due to the heat, transferring thermal energy to your feet. The heat is moving from the sidewalk (higher temperature) to your feet (lower temperature), causing your feet to feel hot. The increased molecular vibrations in the sidewalk result in the sensation of heat on your feet as thermal energy is transferred.
A sidewalk borders a rectangle play area The play area measure 20 feet by 14 feet The width of the sidewalk is 2 ft What is the perimeter of the outside border of the sidewalk?
84
How much cement is needed for sidewalk that is 4 inches thick 3 feet wide and 40 feet long the cement is sold for 76 per cubic yard?
To calculate the amount of cement needed, first convert the dimensions of the sidewalk into cubic yards. The sidewalk's volume is ( \frac{4}{12} ) feet thick × 3 feet wide × 40 feet long = 40 cubic feet. Since there are 27 cubic feet in a cubic yard, the volume in cubic yards is ( \frac{40}{27} \approx 1.48 ) cubic yards. At $76 per cubic yard, the total cost would be approximately ( 1.48 \times 76 \approx 112.48 ).
If you have 152 cubic yards of concrete you are building a sidewalk 6 feet wide by 6 high how many linear feet of sidewalk will you have?
152/(6*6) = 4.22... (recurring) feet.
