Which type of insulation is preferred for below ground insulation (basements and concrete slabs-on-ground)?

What will be an ideal response?


The insulation for such uses must be: (i) of adequate compressive strength, i.e., in rigid-board formation, (ii) should not absorb water, and (iii) should have a reasonably high ?-value. XPS and ISO meet these requirements as both have closed cells to prevent water absorption and their ?-values are high–5.0 and 6.0 respectively. XPS is preferred because it does not have facers, which deteriorate over time.

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Describe the three categories of information gathered, in the office prior to any field survey activity, about the characteristics of the area of a proposed highway location.

What will be an ideal response?

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This follower is used for only low-speed and low-force applications and has a low resistance to wear but is very responsive and is used in situations that require abrupt changes in the cam profile.

a. flat-faced follower b. knife-edged follower c. roller follower d. slow-speed follower

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____________________ irrigation can be used where it is not possible to surface irrigate

Fill in the blank(s) with the appropriate word(s).

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Is there decreasing interest in vegetables as a source of antioxidants?

Indicate by YES (Y) or NO (N).

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