21⟩ What is the tallest man made structure in the world?
The tallest man made structure is the KVLY-TV mast which is 2063 feet tall. The worlds tallest man made structure is Burj Dubai which is 800 meter tall.
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119 Civil Engineering Questions And Answers
22⟩ Why nautical mile is different from statute mile?
One nautical mile is defined by one latitude minute of arc (there are 60 such minutes to a degree). This equals 1852 meters, and roughly (but coincidentally) 2000 yards or 6000 feet. (Edit: actually, a standard nautical mile is 6076 feet, 6000 feet and 2000 yards are commonly used approximations, but produce an error of about 1%).
The statute mile had a little fuzzier definition to start with, as one mile was the same as 1000 roman PAces/steps. The definition has since changed, but one statute mile equals about 1609 meters.
23⟩ What is rigging?
In sailing, the ropes used to move the sails around so the boat will move in the right direction when the wind blows.
24⟩ Does brick grows bigger every year.
Usually bricks do not grow, but since stuff gets all over, it looks like it grows.
25⟩ How did street originate in the plumbing term street ell?
A "street ell" may have gotten its name because it describes a 90° fitting PArticularly useful in tight, street ditches. When installing water pipes under a street, or from a water service, again under the street, into a home or business, this street ell allows one to change pipe direction with one less fitting, and in less sPAce, than with a standard ell.
26⟩ How many Lbs are there in a yard?
A pound (Lb) is a unit of measurement for weight while a yard is a unit of measurement for distance.
If you are referring to common measurements used on a construction site, a "yard" is a common abbreviation for a "cubic yard", which is a unit of measurement of volume. (A cubic yard equals 27 cubic feet.)
Since dirt weighs about 110 pounds per cubic feet, a cubic yard of dirt weighs about 2970 Lbs. Since concrete is heavier (150 PCF), a cubic yard of concrete weighs about 4050 Lbs.
27⟩ What is a projection line?
Projection line is the way, in which the earth is shown on a flat piece of PAper.
28⟩ What is the purpose of the gap in the road on this bridge?
Purpose of the gap in the road is to allow the road to exPAnd and contract with temperature changes without causing damage or deformation to the road.
29⟩ What is the origin of name Railway Sleepers?
When sleepers were added below the railway, lines the trains ran more smoothly and people fell asleep on their journeys.
30⟩ What do you mean by honeycomb in concrete?
Some people call it an air pocket in the concrete or a void.
31⟩ What is BMC stands for in BMC Software?
BMC Software founders Scott Boulett, John Moores, and Dan Cloer began a contract programming PArtnership that operated in and around Houston, Texas.
32⟩ What are moment of inertia and its importance in civil engineering?
The moment of inertia measures the opposition any kind of body will have against a certain momentum (along that same axis) trying to rotate that body.
33⟩ What is the tensile strength of wood?
The tensile strength of a material is the value at which the material fails when subjected to a tensile force. (Tensile means a force pulling the wood fibers lengthwise, as opposed to a compressive force.) There are a lot of different types and load cases for wood, so there is not one answer to this question. For example, wood used outside will fail at a lower load than wood inside. Wood is also anisotropic, i.e. it has different strength in different directions.
Example values of tensile strength vary anywhere from 175 pounds per square inch for Utility Grade pine to 1400 PSI for Dense Select Structural grade Douglas Fir. A good reference for material strength data for most species and grades of commercially available wood can be found in the American Institute of Timber Construction handbook.
34⟩ What are the reasons for geotechnical site investigations in Uganda?
To know the soil properties, in so doing be in position to determine whether the PArticular site is suitable for the purpose intended
To know the history of the site
To know what remedies need to be put in place before construction can start
Based on the soil properties, that can be determined on site and in the lab, design the appropriate foundation for the structure.
35⟩ How high should the water tank be to provide a 60 PSI at base of this water tower?
138.60ft
2.31ft of water= 1 PSI
36⟩ Why does the pressure increase under soil?
Soil pressure increases with depth due to the overburden or self-weight of the soil and due to loads imposed upon the soil.
For example, the pressure variation below the depth of soil is linear and the relation is given by pressure = unit wt * depth. As depth increases, there will be a linear increase in the soil pressure.
37⟩ What is a kip?
1 kip = 1000 lbs
38⟩ What is the distance between railway tracks?
4 feet, 8 1/2 inches
39⟩ Will going from a 3-tap to 6-tap increase water pressure?
No, the pressure will be the same, you will get more volume only if your pumps can handle the GPM, to increase pressure you may need a booster pump or a single pump that is rated for your needs.
40⟩ What are some structures that may be subjected to fatigue?
Bridges, hydraulic presses, burners trains
