Briefly describe the steps involved in the MEPDG method for JPCP.
What will be an ideal response?
The method of pavement design applied in the MEPDG consists of five
basic steps. The first step is to select a trial design based on another method (such
as the 1993 AASHTO Pavement Design Guide, agency policies or standards, or a
design based on engineering judgment and experience. The second step is
selection of acceptable thresholds for performance criteria related to pavement
distresses of mean transverse joint faulting, transverse slab cracking (bottom-up
and top-down), and smoothness. The third step involves the collection of all input
data pertaining to project information and to traffic, pavement structure, material
properties, and climate. Fourth, the trial design is evaluated, typically through the
MEPDG software, by examining the performance indicators. Finally, the
structural viability of the trial design is evaluated and the design revised and
evaluated until an acceptable design is achieved.
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Why is it important to use the Close option when drawing closed polygons using the PLINE command?
What will be an ideal response?
An ________ is a surface seed covering structure that has a high oil content. It is attractive to ants that use it as a food source and in the process help disseminate the seeds.
Fill in the blank(s) with the appropriate word(s).
While having a discussion, Technician A says that a good pattern will tend to be toward the toe of the tooth when tested under light load conditions. Technician B says that under heavier load a more complete pattern can be read across the gear tooth. Who is correct?
A. A only B. B only C. Both A and B D. Neither A nor B
?All of these statements about integral-type power steering pump sealing are true EXCEPT:
A. ?Lip seals are mounted on bolt fittings on the back of the reservoir. B. ?The cap and dipstick provide a seal on the top of the reservoir neck. C. ?A large O-ring seal is positioned between the reservoir and the pump housing. D. ?A lip seal on the pump drive shaft prevents oil leaks around the shaft.