Questions
A rectangular cross section beam (A) made of steel constructed in an industrial building between two...

A rectangular cross section beam (A) made of steel constructed in an industrial building
between two columns which are “X” m apart. The beam is acting as a support for one end of a pair of crane wheel (B). The distance b/w wheels are “Y” m. The crane is used to lift max. of Z tonnes of load which is having hook at the centre of crane. Draw shear force and B.M of all types of beam
diagram of the beam.
Case i) If the crane wheels are positioned at equal distances from centre of the beam.
Case ii) If one of the crane wheels is exactly at the centre.
Case iii) If one of the crane wheels comes exactly over a column.
Also find the max. bending stresses in the beam for the first case considering the depth (d) as twice the width of the beam.
X =6m,Y =1m ,Z=15 tonnes, Depth (d)=500mm

In: Civil Engineering

Please provide step be step solution At a depth of 7km in the ocean,the pressure is...

Please provide step be step solution

At a depth of 7km in the ocean,the pressure is 71.6Mpa assume a specific weight at the surface 10.03kn/m3 and average bulk modulus of elasticity of 2.34Gpa for that pressure range find (a) the change in specific volume between the surface and 7km (b) specific volume at 7km (c) the specific weight at 7km

In: Civil Engineering

Select four (4) large projects (local or international) and carry out the following: i. Suggest the...

Select four (4) large projects (local or international) and carry out the following:
i. Suggest the most suitable (unique for each one) forms of contract for them.
ii. Provide a brief description for why each of the form of contracts is suitable for
the projects.
iii. Describe one (1) advantage for using each of the form of contracts for the projects.
iv. Describe one (1) disadvantage for using each of the form of contracts for the
projects.

In: Civil Engineering

A groundwater contains the following constituents to be treated by the lime-soda process to the minimum...

A groundwater contains the following constituents to be treated by the lime-soda process to the minimum hardness possible has the following characteristics:

CO2 = 62.0 mg/L HCO3- = 250.0 mg/L as CaCO3

Ca2+ = 80.00 mg/L Cl- = 35 mg/L

Mg2+ = 36.6 mg/L SO42- = 96.0 mg/L

Na+ = 23.0 mg/L

The facility is to treat 50 x 106 L/day of water from this source using lime-soda ash to reduce the hardness.

a) Determine the total hardness, carbonate hardness, and non-carbonate hardness in mg/L as CaCO3.

b) Determine the lime and soda-ash dosages for softening (units of kg/day). Assume that the lime is 90 percent CaO by weight and the soda ash is pure sodium carbonate.

In: Civil Engineering

Explain why ‘Discovery’ is not carried out in criminal court cases.

Explain why ‘Discovery’ is not carried out in criminal court cases.

In: Civil Engineering

Explain the differences between Hot Extrusion, Hot Forging, and Swaging in detail. Define the spring-back and...

Explain the differences between Hot Extrusion, Hot Forging, and Swaging in detail. Define the spring-back and mention how spring-back effects can be taken into consideration in bending process?

In: Civil Engineering

Define Compressible index and swell index, whats preconsolidation pressure and what does it tell about the...

Define Compressible index and swell index, whats preconsolidation pressure and what does it tell about the soil,Errors that can affect the consolidation test

In: Civil Engineering

What does the word "slew" mean with regard to tower cranes? what are two different ways...

What does the word "slew" mean with regard to tower cranes? what are two different ways a tower crane can slew?

List dynamic factors that affect crane capacity.

(6 pts) List the seven rules for pumping concrete. What are the three rolling steps when paving asphalt? What is TMPH? What is the possible consequence for not considering TMPH?

Why are cycle times typically larger for a hoe than a shovel?

In: Civil Engineering

(4 pts) Define the term of “windrow” in grader operations. How can you minimize spillage from...

(4 pts) Define the term of “windrow” in grader operations. How can you minimize spillage from the blade?

(3 pts) In what soils is a vibratory pile driver/hammer effective?

(7 pts) List major factors that should be considered when laying out a construction site.

List 4 functions that required to process and produce suitable aggregate materials

In: Civil Engineering

The Wilson Wastewater Treatment Plant currently provides primary treatment for a flow rate of 2500 m3/day....

The Wilson Wastewater Treatment Plant currently provides primary treatment for a flow rate of 2500 m3/day. The effluent from the primary tank has a soluble BOD5= 240 mg/L. You need to design an activated sludge treatment to update the plant. The secondary effluent standards to meet are 25.0 mg/L BOD5 total (suspended and soluble BOD) and 30 mg/L suspended solids. Use the following assumptions:

  • Target soluble BOD5 in the effluent of the secondary treatment is 2.5 mg/L.
  • Growth constants can be estimated as Ks=145 mg/L BOD5; kd=0.025 d-1; mm=8 d-1; Y=0.8 mg VSS/mg BOD5 removed.
  • The designed MLVSS is 3,000 mg/L.
  • The settler is designed to achieve 12,000 mg SS/L in the settled sludge.
  • The MLVSS fraction of MLSS is expected to be 0.7
  1. (4 pts) Estimate the sludge age (qc) to achieve the target effluent criteri
  2. (6 pts) Estimate the hydraulic retention time and volume of the aeration tank (in m3).
  3. (4 pts) Compute the F/M ratio.
  4. (4 pts) Estimate the observed yield in the system (mg VSS/mg BOD5 removed)
  5. (4 pts) Calculate the net waste activated sludge produced (kg VSS/day).
  6. (4 pts) Calculate the cell solids (VSS) in the effluent in mg/L based on the designed suspended solids target for the effluent.
  7. (4 pts) Calculate the cell solids (VSS) in the settled sludge in mg/L based on the designed SS concentration in the secondary settler.
  8. (4 pts) Determine the sludge waste flow rate (m3/day) using sludge age. Do not ignore biomass in the effluent.
  9. (4 pts) Determine the sludge return flow rate (m3/day). Do not ignore biomass in the effluent.

In: Civil Engineering

A cantilever of circular solid cross section is fixed at one end and carries a concentrated...

A cantilever of circular solid cross section is fixed at one end and carries a concentrated load P at the free end. The diameter at the free end is 200mm and increases uniformly to 400 mm at the fixed end over a length of 2m. At what distance from the free will the bending stresses in the cantilever be maximum? Also calculate the value of the maximum bending stress if the concentrated load P=300 KN

(a) 1.23 m, 12.32 MPa

(b) 1.5 m, 11.23 MPa

(c) 1.0 m, 11.32 MPa

(d) 1.33 m, 13.42 MPa

In: Civil Engineering

Block B is initially at rest. Then block A slides on the smooth surface to the...

Block B is initially at rest. Then block A slides on the smooth surface to the right and collides with block B with a velocity vAvA. Consider three following collision cases where: i) elastic impact; ii ) perfectly plastic impact; iii ) e = 0.5. Just after the collision, rank these three cases where the relative velocitiy of B with respect to A is from largest to smallest magnitude.

In: Civil Engineering

- When subcritical flow goes over a step down, does the kinetic energy increase, decrease or...

- When subcritical flow goes over a step down, does the kinetic energy increase, decrease or remain constant?


- You have subcritical flow going through a channel constriction that does not influence upstream water levels. If the critical depth is observed in the constriction, the minimum specific discharge is passing through the constriction

True or false?

- Subcritical flow encounters a step up transition that is smaller than the maximum step height. Does the specific energy:

increase

decrease

remain the same

- In supercritical flow that does not encounter a hydraulic structure, the upstream water is influenced by downstream conditions.

True or False?

In: Civil Engineering

Calculate the monthly average evaporation to occur from the surface of the water in open July,...

Calculate the monthly average evaporation to occur from the surface of the water in open July, taking into account the following data for a lake,
£ using the Penman method.£
Latitude: 40.5 N.
Monthly Avg. Temperature: 21.3 C.
Real daylight hours: 9.8 hours
.2m wind speed: 145 km / h.
Albedo: 7%.
Relative Humidity: 55%

no sir it is homework I have to solve it by penman rules

In: Civil Engineering

#1 You are overseeing the plans for construction of a new highway. Someone proposes using cheaper,...

#1 You are overseeing the plans for construction of a new highway. Someone proposes using cheaper, substandard materials to control/treat water flowing off the construction site. The water on the construction site contains measureable concentrations of sediments, oils from vehicles, heavy metals, and components of asphalt. A recreational lake is nearby and downgradient from the construction site. This is a substantial slope (10% grade) across the site.

Parts pertaining to #1:

a) LIST the three pillars of sustainability and EXPLAIN how this issue connects to each pillar.

b) Assuming you are a licensed engineer, what is your ethical obligation to the public AND other licensed engineers working on this job? [Your response should cover ethical obligations to both parties.]

Will like right away!!

In: Civil Engineering