Let's just say some random guy approaches you on the street asking what an "influence line" is. He claims to be a structural engineer but has never heard of such a thing. How would you explain it to him? Try to explain in laymen's terms while still appearing competent
In: Civil Engineering
produce and explain five types panel used for slab construction.
Annotated sketches can be made to support the answers. EV,10
In: Civil Engineering
2. A wastewater treatment plant discharges an effluent containing 3 mg/L of dissolved oxygen to a river that has a dissolved-oxygen concentration of 6 mg/L upstream of the discharge. The saturation dissolved oxygen for the river is 8 mg/L. Assume that the WWTP discharge rate represents 80% of the river flow rate which travels 0.5 km in an hour. The CBOD5 of the river is 5 mg/L with a decay coefficient of 0.25/day. The reaeration coefficient of the river is 0.5/day. What is the location of the critical point: (a) in time; (b) in distance? (c) Why is critical dissolved oxygen a concern and (d) what are the ways to avoid it?
In: Civil Engineering
Design a short square tied column to carry a factored axial load of 1300k and a factored moment of 550kft. Place the reinforcement uniformly around the column. Design the ties. Assume interior exposure, f’c = 4000psi, fy = 60,000psi.
In: Civil Engineering
If you needed to reduce deflection in a loaded aluminum rectangular box beam in your structural design, which of the following variables would you INCREASE? :
-Length
-Outer width
-Outer height
-Inner width
-Inner height
Which would be the MOST effective in reducing deflection?
What material could you substitute for aluminum in your design to decrease deflection? Why?
In: Civil Engineering
Please explain in detail the effects of different moisture conditions (saturated/dry) in soil to rainfall-runoff relationships? Expound on the concepts of rainfall volume, runoff volume, runoff coefficient, and interflow.
In: Civil Engineering
Define marshall test? Why we are using stability correction ratio?
In: Civil Engineering
1. what is the quality problem often met in the bored piles with the hole being supported by the mud
2. introduce the different types of the enclosure structure for excavation of basement. what are the advantages and the disadvantages of the steel bracing compared with RC bracing
In: Civil Engineering
Circular bars subjected to torsion experience Pure Shear over the cross section. Then, why a classroom chalk subjected torsion experience brittle failure by tension cracking at 45° to the circular cross section? Do some research and explain how shafts made of ductile materials fail when subjected to torsion. Compare and contrast both the brittle failure in chalk and ductile failure in shaft. Explain your answer using the plotted graphs.
In: Civil Engineering
Explain with THREE (3) examples of prototypes and their corresponding models flow that have geometric similarity, but not kinematic similarity, even though the Reynolds numbers match.
In: Civil Engineering
In: Civil Engineering
A chemical company started producing a new chemical which produces cyanuric fluoride (C3N3F3) and diazomethane (CH2N2) as waste products. The process waste stream has a concentration of 200 mg/L cyanuric fluoride and 200 mg/L diazomethane. The flow rate of the waste stream is 1000 L/min. The effluent concentration limit is 5 micrograms/L for both of the waste products. Cyanuric fluoride undergoes a first-order decay at the rate of 0.5 min^(-1), while diazomethane undergoes a second-order decay at the rate of 0.5 L*mg^(-1)*min^(-1). The plant was debating between using a single-stream CMFR or PFR to treat the waste stream. Calculate the required volume for the CMFR and PFR to reach the effluent standards for both of those wastes.
In: Civil Engineering
Find the maximum bending moment and locate the point of inflection for a propped cantilever beam of span 8 m due to a uniformly varying load, whose intensity is 10 kN/m at the fixed support and 2 kN/m at the simple support
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What are the significance and the accuracy of asphalt flash and fire test
In: Civil Engineering
■ Who were the BOLSHEVIKS and the MENSHEVIKS and what were their disagreements?
■ How did LENIN make use of the SOVIETS in challenging the
PROVISIONAL GOVERNMENT in Russia after the fall of the tsar?
■ What policies did the BOLSHEVIKS follow after seizing power in
Russia?
■ What were WOODROW WILSON’S GOALS at the negotiations for the
Versailles Treaty?
What treatment did germany recieve undwr thebterms of the yreaty of versailles?
In: Civil Engineering