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The following levels were taken with a metric staff on a series of pegs at 100-m intervals along the line of a proposed trench.
If the trench is to be excavated from peg A commencing at a formation level of 26.5 m and falling to peg E at a grade of 1 in 200, calculate the height of the sight rails in metres at A, B, C, D and E, if a 3-m boning rod is to be used.Briefly discuss the techniques and advantages of using laser beams for the control of more precise work.
describe the difference between population standard deviation and sample standard deviation. describe a scenario in
A Carnot heat engine is supplied with a high temperature heat source at a rate of 200 kW. If the power output of the heat engine is 120 kW, determine the required source temperature if the heat sink temperature is 20 °C.
A particle begins from s=0 and is traveling along a straight path at a velocity of v=(t^2-4t+3) m/s, where t is in seconds. Construct a v-t graph and an a-t graph at the time interval t=0 to t=4 s.
Two materials (wrought iron, ks = 0.046 mm, and galvanized iron, ks = 0.15 mm) are being considered for a new pipeline. The expected discharge is 0.15 m3/s. Both the head loss and cost are sought for. Wrought iron pipe costs 5 cents more than the gal..
The solids in a specimen have a specific gravity of 2.65. If the oven-dry mass of the specimen is 25kg, what is the volume of the solids in it
A static thrust stand is to be designed for testing a specific jet engine. Knowing the following conditions for a typical test,
You meet with a potential client to discuss a land development project. Your client wants to know the capacity (in cfs) of the existing water supply system serving the area With a 450-ft pipeline
Let P=109N. Q=231 N.a=3.2m. And b=2.9m. Type the unit. N. after typing your numerical answer. Determine the value of the force in member AC. Give a positive value if the member is in tension and a negative value if the member is in compression.
What are the effects of reducing w/c on porosity, permeability, and compressive strength of hydrated cement. Porosity: capillary pore volume/total volume of hydrated cement specimen
What is the velocity of an electron that falls through a magnetic field aligned electric potential of volts across an accelertion region that is 10 k long? (neglect collisions and gravity and assume the electron has zero degree pitch-angle (i.s movin..
A 10 feet thick clay that was unsaturated with a unit weight of 108 pcf and a water content of 20% gets saturated and also swells by 20% due to rain. G=2.70.
There are two methods for determining the range from the SV to the REC in GPS. Code (C/A and P) and waves (L1 and L2) discuss two elements of GPS signals as they relate to each method. choose from the list of elements shown below.1.determination of t..
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