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Civil Engineering
Civil Engineering is a profession of designing and executing structural works that serve the general public, like houses, buildings, roads, etc. A Civil Engineer is an engineer trained in the design and construction of public works, such as bridges or dams, and other large facilities.
4,921 Questions
What kind of bridge is the Donghai Bridge?
Donghai bridge is a kind of mixed-kind bridge. The first part is the arch bridge. The middle one is the suspension bridge and the last part is the arch bridge.
What are the wastage limits for steel cement sand and aggregate?
For steel it can be taken as 2.5 % to 3%
Concrete does not have a very good insulating value, and neither does steel. The mixture of the two will add structural stability to what you are building, but it (commonly) will not enhance the concrete's insulating value.
What is the difference between lap splice length and development length for rebars?
The difference between the two is in the application. A development length is the amount of rebar length that is needed to be embedded or projected into concrete to create a desired bond strength between the two materials. The lap splice length is the length two rebar pieces must overlap and be tied together to create a bond as if there was no break and the run is "continuous". So simply put, development is rebar to concrete, splice is rebar to rebar. The lengths of both splice and development do vary. They are dependent upon different factors. These include but are not limited to concrete strength, rebar size, rebar coating and concrete cover or clearance. So when you see a chart on one project, it can differ from another for these reasons.
Under Reinforced Section
What is the weight of a Cubic meter weight of galvanised steel plate?
The density of steel is 7850 KG/M3
What was the Shannon Scheme 1927?
I believe it is a hydroelectric power station built on the Shannon River in 1927.
What is the name of chemical for improve compressive strength and fast hardening of hollow bricks?
Concrete
What are advantage and disadvantages of flyash bricks?
- Due to high strength, practically no breakage during transport and use.
- Due to uniform size of bricks mortar required for joints and plaster reduces almost by 50%.
- Due to lower water penetration seepage of water through bricks is considerably reduced.
- gypsum plaster can be directly applied on these bricks without a backing coat of lime plaster.
- These bricks do not require soaking in water for 24 hours. Sprinkling of water before use is enough.
- Mechanical bonding strength is weak. But this can be rectified by adding marble waste.
- Limitation of size. Only modular size can be produced. Large size will have more breakages.
HOW to calculate shear stress in a coupling?
I suggest you refer to an engineering text-book because there are so many variables in the calculation your question as put is not answerable.
Where would you use precast concrete?
Bridge sections, tunnel sections and other places where setup of a normal pour is cost prohibitive.
What is 'engineering management'?
Engineering management can usually be one of two things: (1) The managing of engineering personnel. The manager does not actually perform the technical engineering tasks, but coordinates the overall project effort by assigning the different technical tasks to the available staff. The engineering manager may be in charge of setting the overall project schedules and budget, and needs to have the ability to keep a "big picture" perspective. (2) The managing of a specific project during construction, usually called Construction Engineering Management. Will be in the main person or company in charge of getting a project constructed, including preparing the overall bid, managing subcontractors, maintaining the relationship with the owner, etc.
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What challenges did builders face in making the London bridge?
The old (1830) bridge was still in situ.
What are the disadvantages you can get from using compost pits?
Composting involves the burying of dead organic matter and allowing it to rot. Some disadvantages of using compost pits are: cost of equipment, the loss of ammonia and the time and effort required to build compost pits.
The Boulder Canyon Project helped to control floods of the what with the building of the Hoover Dam?
The Colorado River.
What is web buckling and flange buckling?
the web in a rolled steel suction behaves like a column when placed concentrated load.
What is chain surveying as used in civil engineering?
chain surveying is one of the types of survey methods. It is used to survey short
length lands
Why using surcharge for cbr test?
The California bearing ratio (CBR) is a penetration test for evaluation of the mechanical strength of road subgrades and basecourses.
The study of "Effect of soaking period and surcharge load on resilient modulus and California bearing ratio of gypsiferous soils" revealed that the resilient modulus increased with surcharge load and a correlation to soaked CBR was developed. The correlation between the strength ratio CBRL/CBR45 and surcharge load is insensitive to soil type.
Surcharge is the volume of the test, like weights testing how a balance works.
Allowable longitudinal slopes for highway road construction?
allowable longitudinal slopes for highway road construction
When shear stress exceeds the permissible limit in rcc slab then how does this problem is solved?
You may increase the slab thickness and/or calculate the steel reinforcement required to withstand against the applied shear stress.
How do yo calculate the margin of safety?
Let's say you're building an elevator.
You put a sign up saying "maximum capacity 10 people / 800 Kg" (about 1600 lbs)
But you're using a cable that's listed as being able to take 4 000 Kg(about 8000 lbs) before breaking.
This give you a margin of safety for the cable is 4000/800 = 5
The cable can take 5 times the rated load w/o breaking.
Oviously, this doesn't mean much unless the pulleys, the elevator cage, the brakes etc also have a similar margin of safety.
