$[-/1$ Points$]$

DASPRINCGEOENG$10$SI $6.$CQ$\mathrm{.}016.$

Which factors affect soil compaction?

soil type and moisture content

moisture content and compaction effort

soil type and compaction effort

soil type, moisture content, and compaction effort

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$2.[-/1$ Points$]$

DASPRINCGEOENG$10$SI $6.$CQ$\mathrm{.}020.$

Which of the following rollers is most effective in compacting clayey soils?

smooth$-$wheel roller

pneumatic rubber$-$tired roller

sheepsfoot roller

vibratory roller

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$3.[-/1$ Points$]$

DASPRINCGEOENG$10$SI $6.$CQ$.023.$

As the number of passes of the roller is increased, the dry unit weight of the compacted soil

is also increased

is decreased

remains constant

is increased up to a certain number of passes, beyond which it remains approximately constant

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$4.[-/1$ Points$]$

DASPRINCGEOENG$10$SI $6.$CQ$\mathrm{.}024.$

In most specifications for earthwork, the contractor is instructed to achieve a compacted field dry unit weight of how much of the maximum dry unit weight determined in the laboratory by either the standard or modified Proctor test?

$90$ to $95\%$

$80$ to $85\%$

$70$ to $75\%$

$60$ to $65\%$

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