Questions
The laboratory analysis of 25 mL sample after filtration gave the following data: Weight of the...

  1. The laboratory analysis of 25 mL sample after filtration gave the following data:
  • Weight of the filter disk after drying at 103 oC and 550 oC = 5.31g
  • Weight of the filter disk and sample after drying at 103 oC = 5.374g
  • Weight of the filter disk and sample after igniting at 550 oC = 5.339g

Determine the concentrations (in mg/L) of: a) Total suspended solids (TSS), b) Volatile suspended solids (VSS), and c) Fixed suspended solids (FSS) of the water sample.

In: Civil Engineering

Determine the lightest W14 section to carry LRFD factored compression load of 900 kips and LRFD...

Determine the lightest W14 section to carry LRFD factored compression load of 900 kips and LRFD factored strong axis moment of 600 foot-kips.

In: Civil Engineering

There are several things you need to know before you attempt to select the proper pump....

There are several things you need to know before you attempt to select the proper pump. List at least three points about "How to select the right pump for the job" with brief discussion for each item. Refer to the Pump Application Manual.

In: Civil Engineering

use double integration method. consider a simply supported beam with uniformly distribution of load of w....

use double integration method.
consider a simply supported beam with uniformly
distribution of load of w. compute the deflection at midspan and at L/4 . Draw the deoformed structure.

use L=8 meters, W=8

In: Civil Engineering

Q2) In a roofless elevator, which rises vertically at the constant speed of 2m / s,...

Q2) In a roofless elevator, which rises vertically at the constant speed of 2m / s, a stone is thrown upward at the initial speed of 17.6 m / s relative to it. calculate what the elevator has gone up when the bass falls again in it.

step by step plis

In: Civil Engineering

Describe the SlutWalk. What is the purpose? What interventions do its participants seek to accomplish? Summarize...

Describe the SlutWalk. What is the purpose? What interventions do its participants seek to accomplish? Summarize the critiques that Theresa Ann Hunt makes in “A Movement Divided: SlutWalks, Protest Repertoires and the Privilege of Nudity.” Why does Hunt find the SlutWalk problematic?

In: Civil Engineering

Determine the magnitude and direction of the resultant force. Show your work. A. R = 80.3...


Determine the magnitude and direction of the resultant force. Show your work.

A.

R = 80.3 lb, = 106.2°

B.

R = 80.3 lb, = 73.8°

C.

R = 72.1 lb, = 63.6°

D.

R = 72.1 lb, = 116.4°

In: Civil Engineering

How is Pumzi dystopic and Afrofuturist? How is Pumzi both allegorical and speculative? Use examples. Taking...

How is Pumzi dystopic and Afrofuturist? How is Pumzi both allegorical and speculative? Use examples. Taking all that you know about both current realities and this film, what year could the setting of Pumzi take place? Explain.

In: Civil Engineering

Outline the health hazards of ROAD WORKS

Outline the health hazards of ROAD WORKS

In: Civil Engineering

Assume you are the Design/Build Contractor for a CVS Pharmacy in Logan, OH. The building is...

Assume you are the Design/Build Contractor for a CVS Pharmacy in Logan, OH. The building is 11,945 square feet in size with construction scheduled to commence on January 18, 2017. Use the progress completion schedule from a similar CVS Pharmacy in Athens, OH, to organize the overall schedule for the project by weekly progress for a completion date (turn over to owner) on May 23, 2017.
1. Progress in one week: awnings, landscaping, permanent electrical power, gas service
2. Progress in two weeks: compactor pad poured with concrete, drive through poured with concrete, water line, dumpster pad
3. Progress in two weeks: drywall finishing, painting, electrical rough-in, glass and glazing
4. Progress in two weeks: pharmacy window and pneumatic tube, flooring, lights, ceiling tiles
5. Progress in three weeks: demolition, clear and grub site, excavation and erosion control
6. Progress in two weeks: block cleaning, transformer set, base coat of paving
7. Progress in two weeks: exterior wall block, irrigation, grading, demo for turning lanes
8. Progress in one week: footers, column pads, curb layout, parking lot layout, site grading
9. Progress in two weeks: interior framing, doors and hardware, window frames, electrical rough-in, plumbing rough-in
10. Progress in two weeks: interior slab, block work, storm sewer
11. Progress in one week: landscaping, exterior signage, parking lot striping, site clean-up, project completion
12. Progress in one week: millwork, lights, electrical finish, plumbing finish, HVAC finish
13. Progress in two weeks: sanitary pump station, service panels set, sidewalks poured, stone base for pavement
14. Progress in two weeks: steel erection, exterior framing, HVAC roof curbs, roofing, concrete curb, sanitary sewer, relocate telephone lines, parking lot light conduit

In: Civil Engineering

A 30 ft long beam (W24x68) supports a 5 kips/ft uniformly distributed live. Loading due to...

A 30 ft long beam (W24x68) supports a 5 kips/ft uniformly distributed live. Loading due to self-weight of the beam is negligible, The beam is laterally supported at its ends and at third points. What is the flexural strength (kip/ft) of the section based on lateral torsional buckling (FLB)  failure mode?


units should be in kip/ft

In: Civil Engineering

Your client is a small community of 5000 people. They want to begin a municipally operated...

Your client is a small community of 5000 people. They want to begin a municipally operated refuse collection and disposal program and ask your advice on the purchase of collection vehicles.  They want to collect refuse once a week. What would you recommend? (you are asked to provide recommendation regarding type of vehicles as well as a rough estimate on numbers, make appropriate assumptions).

In: Civil Engineering

a. A symmetrical rectangle box section prestressed concrete beam of external width of 300 mm and...

a. A symmetrical rectangle box section prestressed concrete beam of external width of 300 mm and external depth of 600 mm with a uniform thickness of 40 mm is prestressed with 7 numbers straight steel wires of 7 mm diameter located at a distance of 15 mm from the bottom of the soffit and 5 number of 5mm diameter of the steel wires located at the 575 mm from the bottom of the beam . The wires were initially tensioned on the prestressing bed with an initial
prestress of 1500 N/mm . The beam is subjected to point load of 48 + 0.2 (35) kN at the center of the beam and a uniformly distributed load of 20 kN/m entire length
of the beam with a length of 10 m. Calculate the resultant stresses at the end and mid span
section with neat stress distribution diagram. Assume the density of the concrete is 24 kN/m^3.

b. In the above problem, how to control the resultant stresses such that they do not exceed 25 N/mm2 at mid span section.
kN/m .

In: Civil Engineering

a. An unsymmetrical I section prestressed concrete beam of top flange (350 X 40 mm) in...

a. An unsymmetrical I section prestressed concrete beam of top flange (350 X 40 mm) in size, bottom flange of (200 X 40 mm), 30mm thickness of web and overall depth of 400 mm is prestressed with 19 numbers straight steel wires of 7 mm diameter located at a distance of 15 mm from the bottom of the soffit and 9 numbers of straight steel wires of 6 mm diameter located at a distance of 15 mm from the top of the beam. The wires were initially tensioned on the prestressing bed with an initial prestress of 1.2 + 0.01 (35) GPa. The length of the beam is 10 m. Calculate the total percentage loss of stress in the wires at top and bottom. Assume the beam is post tensioned beam and all the wires stressed simultaneously by using the following data:

Relaxation of steel stress= 4.5% of initial stress
Shrinkage strain in concrete for post tensioning = 200 x 10-6
Creep Coefficient ɸ=1.6
Friction coefficient for wave effect=0.0015 + 0.001 (35) per metre Slip at anchorage= 1.5 mm
Modulus of elasticity for steel = 210 GPa
Modulus of elasticity for concrete= 35 GPa

b. In the above problem, how to control the resultant stresses such that they do not exceed 25 N/mm2 at mid span section.

b. What are the measures that are suggested to be taken to reduce the losses in prestressed concrete members for the above problem?

In: Civil Engineering

explain two new personal insights on persons 65 plus. Also, discuss two ways that foresee learning...

explain two new personal insights on persons 65 plus. Also, discuss two ways that foresee learning about age differentiation and the aged helpful to your current or future career field.

In: Civil Engineering