Design for flexure a simple span beam 26’ long to carry P_D = 1000# and P_L = 2000# at the center of the span. f’_c = 4,000psi and f_y = 60,000psi. show all work

In railroad industry,

Describe the tradeoffs to be assessed between using a "broadly" or a "narrowly" graded ballast.

You work for a general contractor experiencing increased rate of “high frequency, low impact” incidents. Specifically, the company has observed an increased rate of incidents associated with overexertion, slips trips, and falls at the same level, back pain, sprain and strains, and fatigue. You are asked to propose a solution to this problem. Your boss mentioned that they are open to implementing technologies or a combination of technology and effective safety practices. In about 300 to 500 words:  

• Describe how you would develop a safety program aimed at tackling this problem.
• Justify the selection of each item in your proposed program and provide information on the effectiveness of the program.
• Provide the approximate cost of implementing the items in the program, where available.
• Include a brief description of the strengths and potential weakness(es) of the program

please type the answer instead pr writing

Question 1:

A) Identify five promising technologies used for construction, safety and health management. For each technology, highlight at least three benefits and three limitations.

B) Using Hierarchy of Control framework as a guide, discuss the impact/effectiveness of technologies discussed in problem 1.

Plz type the answer instead of writing it

1. Primary sludge containing trickling filter sludge is gravity thickened in a circular tank with a diameter of 12 ft, and side water depth of 10.0 ft. The applied sludge is 2600 gpd with 4.5 % solids (by wt.) and the thickened sludge withdrawn is 1300 gpd at 7.5 % solids (by wt.). The sludge blanket in the tank is 3.0 ft deep. For odour control, and to enhance thickening, 45,000 gpd of treated wastewater is pumped to the tank along with the sludge to increase the overflow rate. Calculate the solids loading on the tank, the solids capture efficiency, the overflow rate, and the solids retention time in the tank, assuming that all the tank solids are in the sludge blanket.
2. If the thickened sludge from the tank that is anaerobically digested, at an SRT of 15 days with a VS destruction efficiency of 50%, calculate the size of the anaerobic digester, and the daily methane production rate. Assume that the volatile fraction of solids is 70%.

A grit chamber is designed to treat an average wastewater flow of 1 m³/sec at an overflow rate of 4752 m³/m² –d to capture sand with the following particle size distribution:

         % by wt.                        Diameter (mm)

               30                                         1.0

               30                                         0.5

               30                                         0.2

               10                                         0.1

The design overflow rate is such that 100% removal of the 0.5 mm diameter particles will be achieved. The operating temperature is 20°C and the specific gravity of the sand particles is 2.65. Assume that the stickiness coefficient (k) for sand is 0.04 and the Darcy-Weisbach friction factor (f) is 0.03.

a. Determine the surface area and vertical cross-sectional area of the grit chamber if only the 0.1 mm diameter particles will be scoured away

b. Calculate the removal efficiency assuming that only the 0.1 mm diameter particles will be

     scoured away.

c. If the ratio of peak to average flow is 1.4, calculate the overall removal efficiency at the      peak flow.

Select one of the rating systems appropriate for commercial buildings, and provide a one paragraph description of the rating system, as well as why a builder may choose this system over other rating systems for commercial buildings.

Many options:

LEED

BREEAM

Green Globes / BOMA

BESt

WELL Building Standard

One Planet Living

Living Building Challenge

NZEB

Energy Guide

Energy Star

R-2000

Passivhaus/ Passive House

BuiltGreen

CHBA Net Zero / Net Zero Ready

Select one of the rating systems appropriate for homes, and provide a one paragraph description of the rating system, as well as why a builder may choose this system over other rating systems for homes.

Many options:

LEED

BREEAM

Green Globes / BOMA

BESt

WELL Building Standard

One Planet Living

Living Building Challenge

NZEB

Energy Guide

Energy Star

R-2000

Passivhaus/ Passive House

BuiltGreen

CHBA Net Zero / Net Zero Ready

Draw a sag curve. surveying class

Introduction

Transportation accounts for a signification amount of the total energy consumed in any country, and Trinidad and Tobago is no exception. The bulk of the energy so used comes from burning fossil fuels.

The Task

You are required to determine the reduction in energy consumption if electric vehicles are used instead of internal combustion engines.

You must also determine the reduction in carbon dioxide generated if the electricity used to charge the vehicles comes from the power stations burning fossil fuels or from solar power.

Finally, you must do an economic analysis to determine the reduction in expenditure with the present subsidy on fuel and if instead the subsidy is given as a subsidy on capital expenditure for electric vehicles and solar panels (CAPEX) and not on fuel (OPEX).

Introduction

Transportation accounts for a signification amount of the total energy consumed in any country, and Trinidad and Tobago is no exception. The bulk of the energy so used comes from burning fossil fuels.

The Task

You are required to determine the reduction in energy consumption if electric vehicles are used instead of internal combustion engines.

You must also determine the reduction in carbon dioxide generated if the electricity used to charge the vehicles comes from the power stations burning fossil fuels or from solar power.

Finally, you must do an economic analysis to determine the reduction in expenditure with the present subsidy on fuel and if instead the subsidy is given as a subsidy on capital expenditure for electric vehicles and solar panels (CAPEX) and not on fuel (OPEX).

3. How does the climatic requirements, site conditions and pollution level of any place affect the day-lighting features/elements to be applied in the design of houses there?

Dynamics of Rigid Bodies

1. The body has a mass of 100 kg and is pulled up a 75 percent inclined by a force P. The coefficient of friction f is 0.25 between contacting surfaces.
a) determine the constant value of P required to bring the body from the rest to a velocity of 6 m/s in 10s

b) what value of P will then suffice to maintain that velocity?

2. A nozzle on the end of a fire hose is 20 m from a vertical wall and makes an angles of 45 degrees with the horizontal. If the stream strikes the wall at a point 8 m above the nozzle, what us the velocity of water as it leaves the nozzle?