Questions
Interstate Highway (4 lanes both direction) with AADT of 6000 (90% car, 10% truck) in one...

Interstate Highway (4 lanes both direction) with AADT of 6000 (90% car, 10% truck) in one direction takes a week for water to be drained from pavement and pavement will be exposed to moisture levels approaching saturation for 30% of the time. Consider design life as 20 years and traffic growth 4%.

Resilient modulus of asphalt concrete at 68°F = 450,000 lb/in2

CBR base = 100, Mr = 31,000 lb/in2

CBR subbase = 22, Mr = 13,500 lb/in2

CBR of subgrade = 6

Determine suitable pavement structure. Use the tables from your book or handouts*** Garber and Hoel, Traffic and Highway Engineering, Brooks/Cole, Current Edition Textbook, or Indiana Regulations.

In: Civil Engineering

15. A concrete footing, exerting an applied pressure of 200 kPa on the soil, may fail...

15. A concrete footing, exerting an applied pressure of 200 kPa on the soil, may fail from bearing capacity (B) or excessive settlement (S). Due to soil variation, the following are given:
• Bearing capacity is normally distributed with mean, μ=500 kPa and standard deviation, σ = 200 kPa
• Settlement is log-normally distributed with μ=1.5 cm and σ =0.3 cm.
• The probability that the footing fails in bearing capacity knowing that it had settled excessively is 0.2
• Maximum permissible settlement is 2.5 cm. (i.e. S> 2.5 cm is considered excessive settlement).
(a) Calculate the probability that the footing will fail.
(b) If the foundation system of a multistory building consists of 30 such footing, calculate the probability that none of the footing will fail.

In: Civil Engineering

Writing a report on {Industrial Process Heat, Chemistry Applications, and Solar Dryers } (Renewable Energies) less...

Writing a report on {Industrial Process Heat, Chemistry Applications, and Solar Dryers } (Renewable Energies)

less than 500 words and mentioning the source

please write it in word or pdf

In: Civil Engineering

Describe and sketch shallow slope failure and base slope failure. Explain three aspects that make the...

Describe and sketch shallow slope failure and base slope failure. Explain three aspects that make the method of slices more versatile compared to mass procedure of slope stability analysis. Explain the parameters stability number and stability factor and their relationship. Please answer the question from principle of geotechnical engineering 9th edition book

In: Civil Engineering

A 4.5m4.5m foundation carries a load of 3000 kN. The foundation rests at a depth of...

A 4.5m4.5m foundation carries a load of 3000 kN. The foundation rests at a depth of 1.5m
below the ground surface. The bearing soil is an extended sand with a saturated unit weight
(γsat) of 19 kN/m3
, modulus of elasticity (E) of 35 MPa, and Poisson’s ratio (µ) of 0.3. The
water level coincides with the ground surface.
a) Determine the effective vertical stresses (σ̍v) for points underneath the corner and
center of the foundation and located at a depth of 6.0 m from the ground surface.
Note: for estimating Δσ̍v (i.e., the additional vertical stresses), use both of the
influence coefficient and approximate methods. Comment on your results.
b) If we consider this foundation as a rigid element, what would be its uniform
settlement under the given load? Is it safe (and why)?
c) Calculate the time-dependent maximum, minimum, and differential settlements of the
foundation if sand is interrupted by a 2m-thick clay layer that starts at a depth of 5m
below the ground surface. Is it safe (and why)?
Note: For the clay, take Cc = 0.2 and e = 0.7.

In: Civil Engineering

Q2 A concrete strip footing with a width of B is founded at the depth of...

Q2

A concrete strip footing with a width of B is founded at the depth of D, below the surface of a level site. The water table is at a depth of d below the base of footing. The soil at the site consists of clay having the following properties:

The unit weight = gt,   the undrained cohesion = cu, the undrained friction angle = fu, the drained cohesion = c′ and the drained friction angle = f

Use Hansen’s theory of bearing capacity to determine the allowable bearing pressure, which could be placed on the footing assuming a factor of safety of F for the following cases:

a) Immediately after loading the footing

b) Long time after loading the footing

Notes: The load is vertical. The ground and the base of footing are horizontal. D should be less than or equal to 2.5 B. The variable d can be positive (below the base), negative (above the base) or zero (at the base). Assume water level cannot be above the ground surface.

In: Civil Engineering

Trying to study this question on stress transformations and mohr's circle and am having some difficulty...

Trying to study this question on stress transformations and mohr's circle and am having some difficulty

The state of stress at a point is defined by sigma x = -30 MPa, sigma y = 20 MPa, and tau xy = 15 MPa. 1) Draw the Mohr’s circle and label the key features (e.g., sigma 1, sigma 2, tau max, theta p1, and theta p2). 2) Draw the element showing the principal planes, principal stresses and principal directions with proper labels. 3) Determine the normal and shear stresses on a plane inclined at alpha (degrees) = 30 to horizontal turned anticlockwise. Show the procedure in the Mohr’s circle, with proper labels.

In: Civil Engineering

Explain why hydraulic fill is a poor way to place fill.

Explain why hydraulic fill is a poor way to place fill.

In: Civil Engineering

SURVEY LAW Part 1: A survey of a lot for the purpose of obtaining a mortgage...

SURVEY LAW

Part 1: A survey of a lot for the purpose of obtaining a mortgage would be considered a/an:

A) Forensic survey

B) Litigation survey

C) Utility survey

D) Original survey

Part 2: Why? Give another example.

In: Civil Engineering

Broad crested weir lab report introduction and background.

Broad crested weir lab report introduction and background.

In: Civil Engineering

A 12-inch diameter cast iron pipe conveys 1500 gpm of liquid at an industrial facility. At...

A 12-inch diameter cast iron pipe conveys 1500 gpm of liquid at an industrial facility. At one point in the pipe, call it point A, a gage indicates that the pressure is 45 psi. Another point in the pipe, call it point B, is 175 ft downstream of point A (measured along the pipe).

(a) Determine the head loss (ft) between points A and B if the liquid is: (i) SAE 30 oil at 60°F; (ii) water at 60°F.

(b) Determine the pressure at point B, for both liquids, in the following cases: (i) point A is 18 ft higher than point B, (ii) point A is at the same elevation as point B, (iii) point A is 18 ft lower than point B.

In: Civil Engineering

listing cladding hazards related to exterior work and osha requirements

listing cladding hazards related to exterior work and osha requirements

In: Civil Engineering

Using the compressive stress-strain data provided in fig below and the Australian standard AS 1012.17 test...

Using the compressive stress-strain data provided in fig below and the Australian standard AS 1012.17 test method for determining the modulus of elasticity of concrete, determine the modulus of elasticity of concrete for the following two scenarios: a. concrete requiring complete hydration f the Portland cement and minimal porosity b. Concrete that will simulate equivalent workability to the concrete mix listed in bullet point (a) but with HWR added to the mix to maximize the plasticising effect

In: Civil Engineering

Size the hot water tank (i.e. determine its rating, storage capacity, and dimensions) for a duplex...

Size the hot water tank (i.e. determine its rating, storage capacity, and dimensions) for a duplex that has 2 families, with 3 adult occupants each. Assume the typical morning routine includes taking a shower, face/hand washing, tooth bushing, food preparation, and automatic dishwashing.

In: Civil Engineering

Design a space within a building (could be one room) indicating the interior thermal mass and...

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.

In: Civil Engineering