Forest Road Engineering Guidebook - Ministry of Forests
Forest Road Engineering Guidebook - Ministry of Forests
Forest Road Engineering Guidebook - Ministry of Forests
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1. <strong>Road</strong> Layout and Design<br />
Introduction<br />
<strong>Forest</strong> <strong>Road</strong> <strong>Engineering</strong> <strong>Guidebook</strong><br />
<strong>Forest</strong> road layout and design is a process that includes route selection, field<br />
investigation, surveying, and analysis to provide a site-specific road location<br />
and design. <strong>Road</strong> design provides construction specifications, road prism<br />
geometry, stream crossing site information, and information necessary for<br />
construction control.<br />
The detail and information required for each phase in this process varies with<br />
the type <strong>of</strong> road required, the complexity <strong>of</strong> terrain, the size and complexity<br />
<strong>of</strong> stream crossings, and other resource values.<br />
This chapter:<br />
• describes the types <strong>of</strong> projects for which the district manager’s approval<br />
<strong>of</strong> road layout and design for construction and modification is mandatory<br />
• provides information on route selection and layout, and describes the<br />
content requirements <strong>of</strong> a reconnaissance report<br />
• provides criteria for survey level selection, and explains the types <strong>of</strong> survey<br />
(field traverse and location survey), and the suitability and application<br />
<strong>of</strong> different survey levels<br />
• provides procedures for field traverses and location surveys<br />
• explains general and geometric road design requirements<br />
• provides example correction factors to convert compacted volume to<br />
bank volume for road design purposes<br />
• discusses slope stability considerations if a proposed road will cross areas<br />
with a moderate or high likelihood <strong>of</strong> landslides<br />
• provides road design specifications and parameters.<br />
District manager approval <strong>of</strong> road layout and design<br />
The <strong>Ministry</strong> <strong>of</strong> <strong>Forest</strong>s has developed a package <strong>of</strong> road layout and design<br />
forms and administrative procedures that incorporate the statutory contents<br />
for road layout and design. This information can be found at an appropriate<br />
<strong>Ministry</strong> <strong>of</strong> <strong>Forest</strong>s website.<br />
The district manager approves road construction and modification for forest<br />
roads under various permits. In general, unless the district manager requires<br />
it, the following types <strong>of</strong> projects are exempted from needing his or her<br />
approval <strong>of</strong> road layout and design:<br />
3
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