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Prepare an engineering report for the following abstract
Abstract
This report is based on the four tests which were carried out on the laboratory to help gain concepts in Highway Engineering. Highway Engineering being a broad area of study involves the study of both foundation of the subbase and the design of the pavement surfaces. These two areas of study were involved in the laboratory experiments which were carried out.
The experimental work involved tests on bitumen and tests involving the California Bearing Ratio. The test on bitumen are carried out prior the design of the pavements so as to know the important parameters affecting the pavement. Pavement are always exposed to adverse environmental condition among them being temperature. In the experiments carried out on bitumen; softening point, the needle penetration test and the viscosity of cutback bitumen test, it was observed that temperature and affected the softening point and also the fluidity of bitumen.
On the soil test, various experiment were carried out on the sample soil among them being the compaction test, the % moisture content test, the swelling and the CBR test. The maximum dry density of the soil and its corresponding optimum moisture content were achieved. Through computations, the recorded penetrations and their corresponding forces in the CBR test helped in getting the CBR at 2,5 and 5.0 mm where the highest value were considered. The experiments carried out were compared to the expected results where no much discripancy were observed.
A nylon thread is to be subjected to a 10-N tension. Knowing that E=3.2 GPa, that the maximum allowable normal stress is 40 MPA, and that the length of the thread must not increase by more than 1%, determine the required diameter of the thread.
Using a unit analysis, calculate the value of the K term in the rational method equation (Q = K C I A) in English and SI respectively.
Starting from rest, the boy runs outward in the radial direction from the center of the platform with a constantacceleration of 0.5 m/s2. If the platform is rotating ata constant rate θ=0.2 rad/s,
The current landfill site covers 50 acres, including 5 acres needed for access roads and auxiliary facilities, and has completed one lift on the site of solid waste. If two more lifts are envisioned before closure, how long would it take to complete ..
A three span continuos beam has spans of 27, 30, 27 feet, total unfactored dead loads are 2,600 pounds per linear foot, unfactored live loads are 2,000 pounds per linear foot. For load combination 1.2D + 1.6L
In a falling-head permeability test the initial head of 1.5m dropped to 0.5m in 4 h the diameter of the standpipe being 5mm. The soil specimen was 200mm long by 100mm in diameter.
The partial pressure of the gasses in a 22,414-L volume of air at STP are: oxygen, 21,224 kPa; nitrogen, 79,119 kPa; argon, 0.946 kPa; and carbondioxide, 0.036 kPa. Determine the gram molecular weight of air.
How much contact time would be reuired for inactivating Giardia cysts using the following chemicals at the concentrations and temperatures stated: a. Chlorine Dioxide, 23C, 1.0 mg/L b. Chlorine, 12C, 1.6 mg/L c. Ozone, 10C, 5 mg/L d. Chloramines, 20C..
The bottom of a rectangular flume is 5 m above reference level. The depth of the water in the flume is 3 m. The average velocity is 1.7 m/s. What is the total hydraulic energy at the surface of the water and at the bottom of the flume.
Determine the minimum volume of concrete needed to keep the gate(1m wide) in a closed position, with l=2m. Note the hinge at the bottom of the gate.
Calculate the area of ceiling vents required for ensuring a maximum thickness of the smoke layer of 5 m
A soil specimen has a water content of 18% and a wet until weight of 118.5 lb/ft. The specific gravity of solids is found to be 2.72. Find the dry unit weight, void ratio, and degree of saturation.
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