Aerial photography can be used to produce a variety of map products useful for landscape management and engineering applications.

i. Briefly explain how a Digital Elevation Model (DEM) of a landscape can be generated from overlapping aerial photographs.

ii. What is an orthophoto? How does it differ from an aerial photograph?

iii. A potentially very useful product that can be supplied to landscape managers and engineers is a ‘stereo-model’ that can be viewed, interpreted, and measured using heads-up 3-dimensional viewing technology:

a. Explain how two images can be displayed on a computer screen and visualised in 3-dimensions?

b. What advantages might this technology offer a practising land manager or engineer?

What diameter of cast iron pipe would be required to ensure that a discharge of 0.2 m3/s would not cause a head loss in excess of 0.01 m/100 m of pipe length, assume water temperature is 20 oC

Write a one page on design philosophy for concrete buildings for gravity and lateral loads. Why are they important to be designed correctly?

A subbasin in Mississippi has a predominant urban land use (high density development) under soils with a hydrologic soil group D and a potential abstraction of 0.53-in. Analyses of flow data indicate that for a 6-hr runoff event the flow of the unit hydrograph linearly increased to reach a peak of 9.6 ft3/s in 8 hours. As well, the time that takes runoff to travel from headwaters to outlet is 12-hr. Considering the recession phase of the hydrograph in also linear, determine the subbasin area (acres).

Q1: Design L2L3 member as shown below using double-angle section with 3/8-in gusset plate between the angles. Assume two-lines of three ¾-in bolts in each vertical angle-leg, spaced at 4-in on center. Use A36 steel. ​

Q2: Draw (sketch) the connections at L2 and L3 assuming all truss members are designed using double angle sections, and using the same amount of bolts.

PD= 60 kips, PL=48 kips​

A car is traveling at 20 mi/h on a roadway covered with hard-packed snow (coefficient of road adhesion of 0.25). The car has CD = 0.30, A_f = 22 ft², and W = 2800 lb. The wheelbase is 120 inches, and the center of gravity is 20 inches above the roadway surface and 50 inches behind the front axle. The air density is 0.002045 slugs/ft³. The car’s engine is producing 100 ft-lb of torque and is in a gear that gives an overall gear reduction ratio of 4.5 to 1, the wheel radius is 14 inches, and the mechanical efficiency of the drivetrain is 80%. If the driver needs to accelerate quickly to avoid an accident, what would the acceleration be if the car is front-wheel drive

Select one:

a. 3.78 ft/s^2

b. 3.83 ft/s^2

c. 2.83 ft/s^2

d. 2.78 ft/s^2

Please create a hypothetical construction project (residential, bridge, airport,

dam etc.) case and prepare a project baseline schedule.

a. Project name and description.

b. Project goals, objectives and scope.

c. Map out the resources

d. Outline your plan and schedule

e. Write down the full Project plan and activity definitions and relations.

f. Write down a one page summary of the project according to the “project management

knowledge areas”.

question:

Objective function: Zmax = 6X1 + 10X2

LIMITS: 3X1 + 6X2 ≤ 24
And 5X1 + 6X2 ≤ 30
X1, X2 ≥ 0 and integer (integer)

Apply the following to the question above.
a. Branch-bound algorithm
b. (0-1) Integer programming
c. Gomory cutting plane

1) A hydraulic shovel with a bottom-dump bucket with a heaped bucket volume of 10 m³ is excavating tough clay. The swing angle is 103 degrees and the job efficiency is 0.85 + (8/100). Calculate the shovel production in BCM.

2) Estimate the time required to load 408 m³ of gravel from a stockpile into trucks using a clamshell having a heaped bucket capacity of 0.57 m³. Estimated cycle time is 20s. Swing depth factor = 1.0. Job efficiency is estimated to be 58 min/h.

3) A small hydraulic excavator will be used to dig a trench in hard clay. The trench size is 0.76 m wide by 1.50 + (58/100) m deep. The excavator bucket available is 0.76 m wide and has a heaped capacity of 0.50 + (8/100) m³. The maximum digging depth of the excavator is 4.90 m. The average swing angle is expected to be 75° and the job efficiency is 78 %.  Estimate the hourly trench production in BCM and in linear meters of trench.

Reducing the water footprint is a universal goal to be accomplished, how this can be done in Oman?

discuss and describe the particle electrical charge theory with emphasis on electrical double layer theory and its significance during the design of water treatment coagulation unit?

A road of formation width 12 m is to be constructed with side slopes of 1 vertical to 2 horizontal in cut and 1 vertical to 3 horizontal in fill. The existing ground surface has a cross fall of 1 vertical to 8 horizontal and it will intersect the formation 1.5 m to the left of the center line and 1.0 m to the right of the center line at two cross sections 20 m apart. Calculate the areas related to the cut and fill at the two sections. Hence calculate the outstanding volume of cut or fill remaining after the establishment of the formation between the two sections.

If wastewater recirculation rates are too high ---------------

solids will wash out of the secondary clarifier

effluent will be sparkling clean

the treatment efficiency will be high

it all depends on the pH

we don't know what will happen

The concentration of --------------- formed from continuous running of motor vehicle in a closed garage can cause asphyxiation

carbon dioxide

carbon monoxide

carbonate

NH4

none

The valves that are normally located on the upstream side of pumping equipment and at the beginning of each rise in the pipelines to prevent backflow are called -------------- valves.

gate

air-release

check

surge

globe