Compare work place safety in the 1890’s and early 20th century, as compared to today safer working conditions
Please explain, be as detailed as possible
In: Civil Engineering
For a dual-media filter with 0.5 m of anthracite coal and 0.3 of sand. Other data for anthracite: specific gravity is 1.67, porosity is 0.5, d90 grain size is 1.5 mm. Other data for sand: specific gravity is 2.65, porosity is 0.4, d90 grain size is 0.9 mm. The water temperature is 20C, so the mass density of water (ρ) is 998.2 kg/m3 , density of sand is 1650 kg/m3 , density of anthracite coal is 1506 kg/m3, the absolute viscosity is 1.002 x 10-3 kg/m-s. Assuming a 30% margin of safety for backwash, calculate the following:
a) the recommended backwash rate for the filter (gpm/sf)
b) the pressure drop through the filter during fluidization (psi)
Note: multiply (L/m2-s) by 1.473 to get gpm/sf. Multiply (N/m2) by 0.000145 to get psi.
In: Civil Engineering
Two discharge wells (1 and 2) penetrating an unconfined aquifer are pumped at constant rates of 3,000 and 500 m^3 per day , respectively. The steady-state head (i.e., water table height) measured at an observation well is 40 meters . The observation well is 50 meters from well 1 and 64 meters from well 2. The water table height measured at a second observation well is 32.9 meters , which is located 20 meters from well 1 and 23 meters from well 2. Determine the aquifer permeability K (in m/day).
In: Civil Engineering
Q4. A rigid strip footing is constructed on a layered soil deposit, as shown in the figure.
Before construction of the footing, laboratory tests on a saturated clay sample, taken at a depth of 6 m below the ground surface, gave the following results:
Saturated unit weight of clay: gsat = 19.5 kN/m3
In: Civil Engineering
Q3. The total load of a chimney and its circular footing is 35 MN, as shown in the figure. Assume the average unit weight of soil below and above the water table is the same.
According to SPT results, the average N-value for sandy soil below the footing is 20.
In: Civil Engineering
As a groundwater engineer, it is our responsibility to keep the stakeholders aware of information and insights related to the containment of any factors that cause groundwater contamination. Extensive knowledge among the community on this matter will contribute to a sustainable conservation of groundwater resources at all level of ages. Develop a best method and approach to achieve this goal based on the following criterias :
i. Knowledge, perception and understanding of groundwater contamination.
ii. Perceptions of groundwater quality in terms of impacts and consequences for each sector though comparisons in two different situations.
In: Civil Engineering
Course: CIVE 4309: SOLID WASTE MANAGEMENT
Subject: Case study
landfill area and state fully the operational method that applies to chosen landfill The slide presentation must have:
1) The definition of landfill
2) Background of the chosen landfill
3) Landfill operation should include:
1) Landfill layout and design
2) Landfill operation and management (include the diagram)
3) The reaction occur in the landfill
4)The management of leachate o Environmental monitoring (Gas monitoring)
5) Landfill closure
Assessment based on the rubric
with resources.
In: Civil Engineering
Hint: Express the capacity of the pile in terms of the unknown length, L. Solve for L
In: Civil Engineering
What are the main issues of the construction industry, including its economics, statistics, technological advances and challenges?
In: Civil Engineering
In: Civil Engineering
In your opinion, how this pandemic changed the way of engineering education in universities as well as engineering career post-Covid-19 and how you as a newly-graduated engineer can still contribute to the United Nation Development Plan (UNDP) Sustainable Development Goal (SDG) 2030 despite this pandemic challenge?
USE TYPING
In: Civil Engineering
In retrospect to the currently challenging global economic state, recommend five (5) preemptive or anticipatory actions from the perspective of engineering economics that could be taken by engineers in ensuring their organization will continue to survive.
In: Civil Engineering
What are some reasons for various errors in the open channel flow experiment(fluid mechanics)?
In: Civil Engineering
Can explain 5 point. What engineering sustainability do for contain toxic/ harmful material with an example... Thankyou..
In: Civil Engineering
Where is dewatering required. Explain its types along with its context and types of dewatering?
In: Civil Engineering