I am an enginnering student and I have been given an assignment on how to model a stormwater management system.

Can you please provide me with some help and the steps necessary to complete the assignment

A simple example of a drawing would be much appreciated.

I have all information on porosity and permeability of the materials through which the rainwater will pass through.

State also any assumption that can be made to facilitate this task.

1-A building requires a 100-foot long by 83-foot wide by 5-inch thick concrete slab. Using a waste factor of 10 %, Include calculations. a)determine the number of cubic yards of concrete needed to pour the slab. (2 points)

2-Determine the number of rolls of wire mesh needed if there are 750 SF of wire per roll and 12% of waste. Include calculations. (2 points) 9 BCT 2770 Estimating Fundamentals

3-Determine the amount of rebar needed for the slab if it is reinforced with #4 rebar at 12 inches on center both ways. Assume 2 inches of cover and add 10% for lap and waste. Include calculations.(11 points) Tip=Use the density method

4-Determine the cost to finish the slab using a productivity of 0.011 labor hours per SF and an average labor rate of $29.92 per labor hour. Include calculations.(2 points)

5-A vapor barrier is to be placed below the slab. Determine the number of 10-foot by 100-foot rolls of vapor barrier needed. The vapor barrier needs to be lapped one foot. Hint: Subtract the lap from the width of the roll. Include calculations. (2 points)

write a informations about (Slenderness effects for concrete columns in sway frame _ moment magnification method)?

Note:i want many of informations about this.

1. What is the name of the stage of "being less than potential absorption"?

   	a.	Saturated Surface Dry
   	b.	Air dry
   	c.	Oven dry
   	d.	Damp

1 points   

QUESTION 2

1. Fine aggregates are particles that . . .

   	a.	are all of these items
   	b.	completely pass through a 3/8 inch (9.5 mm) sieve.
   	c.	are created from crushing stone.
   	d.	are made of natural sands.

1 points   

QUESTION 3

1. The amount of Fine Aggregate passing the #50 and the #100 sieves will affect . . .

   	a.	strength of the concrete
   	b.	workability and bleeding of the concrete
   	c.	the durability of the concrete.
   	d.	color of the concrete

1 points   

QUESTION 4

1. New concrete made from recycled aggregate, as compared to conventional aggregate, has all of the following properties except . . .

   	a.	some reduction in compressive strength using recycled fine aggregates only.
   	b.	dry shrinkage and creep of the concrete up to 100% lower.
   	c.	equal or better freeze-thaw resistance.
   	d.	good durability.

1 points   

QUESTION 5

1. Care in selecting gap-graded aggregates is not affected by . . .

   	a.	the cost of processing the material is much less than in regularly graded aggregate.
   	b.	excess fine particle sizes may have a higher water demand.
   	c.	homogenizing or segregation may be a problem.
   	d.	certain particle sizes are intentionally omitted.

1 points   

QUESTION 6

1. Aggregates used to produce insulating light-weight concrete (15 - 90 lb/cubic foot) include . . .

   	a.	sand, gravels, crushed stone, and air-cooled blast furnace slags.
   	b.	expanded shale, clay, and slates.
   	c.	barite, limonite, magnetite, ilmenite, hematite, iron and steel punchings or shot.
   	d.	pumice, scoria, vermiculite, and diatomite.

1 points   

QUESTION 7

1. A factor that does not increase acid or corrosive resistance of a fresh mixed concrete is . . .

   	a.	a low permeability.
   	b.	a low-to-moderate cement content.
   	c.	a low water-cement ratio.
   	d.	a protective coating.

1 points   

QUESTION 8

1. Natural aggregates are . . .

   	a.	dug or dredged from a pit, river, lake or seabed.
   	b.	created by screening and washing large quantities of mined material for needed sizes.
   	c.	created by crushing large rock, boulders or cobbles
   	d.	created by crushing recycled pavements and other concrete materials.

1 points   

QUESTION 9

1. The larger the value of the fineness modulus, the . . .

   	a.	ratio has nothing to do with aggregate size.
   	b.	finer the aggregate size.
   	c.	ratio must be a value less than 2.3 for best concrete results.
   	d.	coarser the aggregate size.

1 points   

QUESTION 10

1. Aggregates used to produce fresh-mixed normal-weight concrete (140 - 150 lb/cubic foot) include . . .

   	a.	sand, gravels, crushed stone, and air-cooled blast furnace slags.
   	b.	expanded shale, clay, and slates.
   	c.	barite, limonite, magnetite, ilmenite, hematite, iron and steel punchings or shot.
   	d.	pumice, scoria, vermiculite, and diatomite.

the engineers wants to check the strength of hollow rectangular section of size 20 cm X 24 cm and 16 cm X 20 cm. For that purpose how will you help the engineers in finding the strength by using its moment of inertia, polar moment of inertia and radius of gyration?                                                                                                                          
                                                                                                       

If the flow ratios for the lane groups NBLT, SBLT, NB, SB, EB, and WB are 0.19, 0.16, 0.30, 0.28,0.30, and 0.26, respectively, do we need an overlap phase, yes or no?

What is “average speed” we use in the relationship where flow is density times speed?

a. time mean speed

b. space mean speed

What types of locomotive works best for urban transit system?

a. diesel-locmotive

b. diesel-electric locomotives

c. electric locomotives

d. steam locomotives

A hydrologic budget is performed on a section of lake to determine the expected evaporation in inches per month. The surface area of the of the lake is 250 acres. The inflow is 1500 cfs, the outflow was 1450 cfs, the infiltration is 5 inch/month, and the precipitation is 10 inches/month of precipitation over the lake. The overall increase in storage is 0.4 ft/day. Note: Assume that 1 month has 30 days.(show work)

(a) Schematically explain how size of a rock sample affects the strength of the rock in a triaxial experiment. (4.0 mark) (b) Using a schematic graph explain how different loading rates affect the elastic properties and strength of the rock. (4.0 mark)   

1. Discuss the different burdens of proof for both criminal inquiries and civil proceedings.

The shear strength of a normally consolidated clay can be given by the equation f =  tan 30. A consolidated-undrained triaxial test was conducted on the clay. Following are the results of the test:
Chamber confining pressure = 100 kN/m2
Deviator stress at failure = 80 kN/m2
Determine
a) Consolidated Undrained friction angle (CU), (6 points)
b) Using formula, calculate shear and normal stresses on the failure plane inside the soil sample, (6 points)
c) Pore water pressure developed in the clay specimen at failure. (8 points)

A 12-in-diameter well completely penetrates a 130-ft-thick, unconfined aquifer with a coefficient of permeability of 0.00055 ft/sec. If the radius of influence of the well is 500 feet and the drawdown at an observation well 250 ft away is 5 ft, determine the steady state well discharge and the drawdown at the well.