How will you design the foundation of a structure in Swelling soil.

6) WHAT ARE THE DIFFERENCES BETWEEN CHEMICAL and MINERAL ADMIXTURES?

a) A highway design includes the intersection of a +4.8% grade with a -4.2% grade at station 1052+75 at elevation 851.50 feet above sea level. Calculate the center-line elevation along this highway for every 50-ft station on a parabolic curve of 600 feet length.

b) What is the minimum stopping sight distance on this vertical curve and the maximum safe speed on this section of road for wet pavement

An unvented kerosene heater is operated for 1 hour in an apartment building having a volume of 300 m3. The heater emits SO2 at a rate of 50 ug/s. The ambient air concentration and the indoor air concentration of SO2 are 80 ug/m3. If the rate of ventilation is70 liters/s and the apartment is assumed to be well-mixed, what is the indoor air concentration of SO2 at the end of 1 hour? Assume a first order decay rate using Table 7.14 in the textbook.

A 500 feet equal tangent vertical curve connects two tangents that intersects at station 5+34.00 and elevation 1210 ft. The initial grade is +4% and the final grade is -2.5%.
i. determine the station and elevation of the high point, PVC and PVT

ii. What will you recommend as the maximum safe design speed for this road to provide adequate stopping sight distance?

The results of a tensile experiment on a metal is given in the table below. The tensile sample had circular cross section with the diameter of 10 mm and initial gauge length of 60 mm. Use this table and calculate:

(a) The Young modulus of this metal (in GPa)

(b) The modulus of resilience (MJ/m3 )

(c) The measured diameter of the sample is 9.5mm when the applied force is 37306N. What is the Poisson’s ratio?

(d) What is the engineering stress and strain, as well as the true stress and strain at the applied force of 37306N?

In Civil Engineering:

The beginning of a roadway curve is called the ______

The end of a roadway curve is called the ______

Answer the given statements as True or False. If the statement is false, correct it so it becomes a true statement.

1. The neutral axis can be found at a distance ‘y’ (where y>0) from the centroidal axis of a
member.

2. The centre of curvature can be found at a radial distance (rho) from the neutral axis of a
member in pure bending.

3. When developing generalized equations for stress transformations, we must consider
stresses on only the horizontal and vertical faces.

4. Shear strain is defined as the angle between two line segments that were originally parallel
to each other.

5. In biaxial bending, the principle of superposition can be used to add bending components
about more than one principal axis.

6. When determining average shear stress along a horizontal section, we are to assume a
uniform and linear shear stress distribution.

7. In beams, to express internal moments and shears, positive sign convention on the face to
the right of the cut section with internal shear represented as a downward force (V) and
internal moment (M) represented as a counter-clockwise moment.

8. In Mohr’s circle, the average stress of the element is at the center of the circle.

9. Shear stress components of adjacent planes are equal and opposite.

10. Buckling is a sudden large displacement parallel to the direction of loading.

introduction about engineering negligence not less than one page

A structure constructed near to the water body experiencing an anticipated load of 1.25 x106 N. The load coming on to the foundation do not includes the weight of pile cap. Founding subsoil contains a layer of clay 5.0 m deep from the ground surface followed by some loose soil. As a Geotechnical Engineer, design the most suitable friction pile group considering the following factors: Factor of safety against shear failure = 2.5 Unconfined compressive strength of clay = 0.060 N/ mm2 Radius of individual pile = 200 mm Weight of pile cap = 200000 N

Civil Engineering (Geo-Polymer Concrete) Summary:

Do some researches & write one or two page of summary report on design and uses of

geo-polymer concrete. Focus attention on the mix design, and specific uses. Include the Work

cited if it’s possible.

Civil Engineering (Geo-Polymer Concrete) Summary:

Do some researches & write one or two page of summary report on design and uses of

geo-polymer concrete. Focus attention on the mix design, and specific uses. Include the Work

cited if it’s possible.

write importance of geology to civil engineer, maps,

same should be reflected in the references

A truncated-pyramid-shape landfill is required to serve a community for 10 years. The community has a solid waste disposal rate of 5.0 lb/capita/day and a by-weight recycling rate of 34%. The total solid waste generated by the community over the 10 years period that is expected to go to the landfill is 1x10^9 lbs. The waste density is 1500 lb/yard3. Assume that the population, disposal rate, and recycling rate will remain constant.

1. Estimate the population of the community in capita.
2. If the waste occupies 85% of the landfill, estimate volume of the landfill space in ft3.
3. If the landfill height is 90 ft, and the side slope is 3, determine the dimension of the landfill in ft. (let L = W).
4. If the landfill has a 10-inch-thick clay barrier layer without geomembrane that holds 6 inches of liquid leachate above it and a hydraulic conductivity of 3.25x10^-7 in/s, determine the leakage rate in ft3/year.