Explain, with reasons, whether you can use the following tests to simulate the behavior of sand in liquefaction

i) Unconsolidated Undrained Triaxial Test

ii) Direct Shear Test

iii) What is the most suitable type of triaxial test that should be used? (Does not have to be (i) or (ii))

QUESTIONS:

Design a square column footing for a 20-in. square tied interior column that supports loads of DL (170) k and Live load LL (210) k. The column is reinforced with eight No 8 bars, the bottom of the footing is 5 foot below final grade, and the soil weighs 100 lb. /ft3 the allowable soil pressure is 4 w ksf. The concrete strength is 4,000 psi and the steel is Grade 60.

Environmental lapse rate = 0.1 degree C/100m upto 100 m altitude (surface temperature drop at nighttime).

Environmental lapse rate = -0.7 degree C/100m after 100 m altitude

The adiabatic lapse rate is based on moist air.

Find the atmospheric condition from the example below.

a) Mixed radiational inversion

b) Radiational inversion

c) Subsidentail inversion

d) Frontal inversion

e) Advective inversion

Will upvote, thanks in advance

A Class I two-lane highway is on level terrain with passing permitted throughout. The highway has 3.6 m lanes with 1.1 m shoulders. There are 13 access points per kilometer. The base FFS is 96.5 km/hr. During the peak hour, 500 vehicles are traveling in the analysis direction and 400 vehicles are traveling in the opposing direction. If the PHF is 0.8 and there are 7% large trucks, 7% buses, and 7% recreational vehicles, what is the level of service?

The rate of change of the grade of a parabolic summit curve is 0.5%. The grade of ascending and descending tangents are 6% and -2.0% respectively. The elevation of VPT is 200 ft at Sta 15+80. Determine the:

a) length of curve;

b) elevation of the summit,

c) location of the summit;

d) the vertical distance from VPI to the curve;

e) elevation at Sta 06+80.

Give reason:

why when velocity across a pipe fitting increases the pressure drop also increases.

For a coastal area, you are asked as the responsible sanitary engineer to design a waste treatment plant. Briefly select the following and give a sound engineering justification: Effluent treatment train, Sludge treatment train, Effluent reuse/recycle/reclamation or ultimate disposal, Treated sludge usage or final disposal, Location of your suggested wastewater treatment plant, and Methods to be used for unit engineering design

please solve this question with a clear hand writing

A speed field; It is defined by V(u,v)=(V1/L)(-xi+yj) , here V1 and L are fixed. This flow is 2 dimensional and stable.

(a)In which position in the flow area does the velocity equal the velocity V1? Make an outline of the speed field by drawing arrows for x>=0 , these arrows should represent fluid velocity in representative positions.

(b)Draw the flow line. (dx/u=dy/v)

Design a space within a building (could be one room) indicating the interior thermal
mass and construction. The design should illustrate the best location for thermal mass
and window placement in order to improve indoor comfort and building's thermal
performance.

design a RCC beam as per aci 318 2014
f'c = 32 N/mm^2
fy=400 N/mm^2
live load acting =10 KN/m
span=6 m
do all checks including check for minimum area of rebar
clearly mention all assumption and clause of code used(compulsory)

2) calculate cracking moment for the section

aci 318 pls

Operating problems and solutions that will occur in the waste water treatment facility.

(at least 4 problems and these solutions)

#Environmental Engineering

The California Aqueduct transports water from northern California to southern California. For most of its length, it is an open concrete trapezoidal channel. Consider a segment with a bottom width of 40 ft, a longitudinal slope of 0.004% (So = 0.00004) and 1.5 H:1V sideslopes (z = 1.5). Assume n = 0.013.

(a) Determine the discharge (in cfs and mgd) if the normal depth is 18 ft.

(b) Determine the normal depth if the design discharge is 6400 mgd.

i need a research talks about High performance concrete that's include

1.abstract

2.summary of the research

3.objective

4.methodology

5.result

6.future work

7. resources