Can you write an abstract of 300 words about (Asphalt pavement: traditional hot mix asphalt vs. warm mix asphalt based on Life Cycle Assessment)? Include REFRENCE!!!!
Thank you
In: Civil Engineering
1.state 3 impacts each of nitrate, phosphorus and sulphur on the environment.
2. What is the name of the bacteria that begins the nitrofication process and write the chemical reaction of the nitrofication process
3.Describe biological oxygen demand
4. Describe chemical oxygen demand tests
In: Civil Engineering
Discuss the different estimating techniques that are used for construction projects by answering the following questions in your post:
In: Civil Engineering
Construction Engineering question: Produce a environmental management plan
Company has been awarded the contract for a bridge replacement, including 2km approach resurfacing on each side and has placed you and your team in charge. Produce a environmental management plan. Thanks!!
In: Civil Engineering
Determine the batch weights needed for all materials for a 10 yd3 batch given the following information. Show all work for partial credit.
Slump = 4 inch maximum
w/cm = 0.45
Cementitious content = 525 lbs/yd3
Slag content = 30% by weight
Fly ash content = 30% by weight
CA (limestone) specific gravity (SSD) = 2.49
FA (sand) specific gravity (SSD) = 2.58
Cement (type I) specific gravity = 3.14
Slag (grade 100) specific gravity = 2.86
Fly ash (class C) specific gravity = 2.59
Air content = 1.0 percent (non-air entrained)
CA absorption = 1.0%
CA moisture content = 2.5%
FA absorption = 1.5%
FA moisture content = 3.3%
Aggregate Volume: 55% CA, 45% FA
|
Material |
Uncorrected batch weights for 1 yd3 |
Corrected batch weights for 1 yd3 |
Batch weights for 10 yd3 |
|
Portland Cement |
|||
|
Slag |
|||
|
Fly Ash |
|||
|
Water |
|||
|
Coarse Aggregate |
|||
|
Fine Aggregate |
In: Civil Engineering
Design an overflow spillway profile for a design discharge of 1200 m3/s.
The upstream water surface level is at an elevation of 220 m and the upstream channel floor is at 180 m.
The spillway, having a vertical face, is 40 m long.
In: Civil Engineering
How do differences in ax affect the arrival time of the leading edge of the contaminant plume
In: Civil Engineering
What are different types of live loads consider in the design of RCC bridges
In: Civil Engineering
What are the other more accurate ways of finding the specific gravity of soil without using pycnometer?
In: Civil Engineering
Why is fracking an issue in Texas? Think at a governmental level, especially involving Public Opinion.
In: Civil Engineering
Mold Design: In a 2-page report discuss the importance of mold design; specifically, for injection molding processes.
In: Civil Engineering
. A dump truck is purchased for $110,000 and has an estimated salvage value of $10,000 at the end of the recovery period. Prepare a depreciation schedule for the dump truck with a recovery period of five years using: a) the straight-line method b) the sum-of-the-years method c) the declining-balance method
In: Civil Engineering
DESIGN SECONDARY SEDIMEMTATION TANK TO FIND OUT THE DIAMETER THE DEPTH AND NUMBER OF TANKS FOLLOWING INFORMATION:
MLSS = 2600-2900
DIAMETER = 3-50M
WATER DEPTH = 3-5M
40-50% OF WASTERWATER WILL BE RECIRCULATED TO THE AERATION TANK
In: Civil Engineering
As per ASCE 37-02 mention the standard loading of Combined construction loads (personnel, equipment, and materials) based on the level of use for the working surface.
| Sparsely populated with personnel; hand tools; very small amounts of construction materials |
sf |
| Sparsely populated with personnel; hand operated equipment; staging of materials for lightweight construction | |
| Concentrations of personnel; staging of materials for average construction | |
| Material placement by motorized buggies; staging of materials for heavy construction. |
In: Civil Engineering
What are the problems arised in simply supported beam bridge(any component of the bridge or steel trusses type) and how to improve the qualities or the problems arised?
In: Civil Engineering