Ditches. (1) Remove bank slough, minor slides, and obstructions.
(2) Remove slash created by operations.
(3) Restore to functional drainage.
(4) Minimize erosion and/or sediment delivery by placement and maintenance of filtering systems.
Ditches. Working in ditches for sewers, surface drains, water mains or laterals, where the mean depth below the average ground level is eight (8) feet or greater. The average depth to be decided at the sole discretion of the Director of Engineering, who shall, if the conditions are met, authorize payment. It is the responsibility of the individual Leadhand to advise the Supervisor that conditions are such that danger pay should be considered. Danger pay will apply only to those employees working in the ditch and not to those on the same job but not working under the same conditions.
Ditches. Minimum depth is 1 foot below the surface grade of the entire length of both sides of the road. Ditches must be adequate to drain peak flow. The road must be graded and crowned to drain. Standing water may not be allowed to pool on the road. Culverts: Culverts must be placed on the natural slopes where necessary to prevent pooling of water caused by the roadbed. Culverts must extend beyond the base of the road at least 36" on both sides of the road. Road Width: Roads must be 16-18 feet. Surfacing Width: 12-14 feet running surface. Use: Light short-term. Chiefly timber harvest use, normally less than ¼ mile in length. No expected future extension. Surfacing: The minimum necessary to complete timber harvest operations, normally a seasonal road. Turnouts: Must be constructed large enough for opposing truck and utility vehicles to safely get out of log truck traffic without undo maneuvering at the typical traffic speed. Turnouts must be constructed as needed for safe passage of logging trucks and at the end of the spur. .
Ditches. Minimum depth is 1½ foot below the surface grade of the entire length of both sides of the road and must be adequate to drain peak flow. Culverts: Culverts must be placed on the natural slopes where necessary to prevent pooling of water caused by the roadbed. Culverts must extend beyond the base of the road at least 36" on both sides of the road. Road Width: Roads must be 20 feet, including ditch (see typical roadbed section) Surfacing Width: 14 feet running surface. Use: Light year round, except during spring breakup. Designed and constructed to access more than one timber sales, or to allow for possible future upgrades.
Ditches. Slope, grade, and shape ditches. Remove all projecting roots, stumps, rock, or similar matter. Maintain all ditches in an open condition and free from leaves, sticks, and other debris. 204.13 Xxxxxxx, Shaping, and Finishing. Complete slopes, ditches, culverts, riprap, and other underground minor structures before placing aggregate courses. Slope, shape, and finish as follows:
Ditches. (i) longitudinal slopes - min. = 0.5%
(ii) minimum depth below centreline = 850 millimetres
(iii) minimum depth below property line = 300 millimetres
(iv) maximum depth below centreline = 1000 millimetres.
(v) front slope - 3 horizontal to 1 vertical minimum
(vi) back slope - 3 horizontal to 1 vertical minimum within the road allowance and 5 horizontal to 1 vertical beyond the road allowance, if required.
(vii) front slope - 3 horizontal to 1 vertical minimum above the solid rock and 1 horizontal to 4 vertical minimum below the solid rock, leaving a minimum 300 mm berm between the rock cut and the 3:1 slope.
(viii) back slope - 1 horizontal to 10 vertical minimum to top of rock and 5 horizontal to 1 vertical commencing 500 mm from rock face thereafter.
(ix) earth - all road ditches shall be flat bottomed.
(x) rock - all ditches shall have a minimum bottom width of 300 mm.
Ditches. Drainage ditches shall be installed inside the plant area to provide drainage of surface water and to ensure stability of the facilities. All swales shall be erosion control protected by grass with man made mxxxxxxl or rip rap. Ditches shall have a grade of not more than 2.0 percent and a normal minimum grade of not less than 0.5 percent.
Ditches. Slope, grade, and shape ditches. Remove all projecting roots, stumps, rock, or similar matter. Maintain all ditches in an open condition and free from leaves, sticks, and other debris. Form furrow ditches by plowing or using other acceptable methods to produce a continuous furrow. Place all excavated material on the downhill side so the bottom of the ditch is approximately 18 inches below the crest of the loose material. Clean the ditch using a hand shovel, ditcher, or other suitable method. Shape to provide drainage without overflow. 204.13 Xxxxxxx, Shaping, and Finishing. Complete slopes, ditches, culverts, riprap, and other underground minor structures before placing aggregate courses. Slope, shape, and finish as follows:
Ditches. The final plat shall show a water conveyance facility non-interference setback of 50 feet on either side of the Spain-Xxxxxx Ditch Lateral within the subdivision unless a smaller easement is agreed upon by the ditch owners or authorized representatives, or evidence is provided that the ditch is a private lateral owned by the applicant. This setback shall provide for the unobstructed passage and delivery of water, unobstructed access, inspection, use, routine maintenance, repair, and construction related to the water conveyance facility. (COB Ord 2011-2, Effect on Ag Water User Facilities)
Ditches. Where drainage by ditches are proposed by the Developer and approved by the Town’s Manager of Operations ditches shall be constructed to a minimum depth of 500 mm below the finished gravel centre line road grade and shall be shaped with 3 to 1 side slopes. All drainage ditches shall be designed in accordance with the above criteria and shall include perforated pipe sub- drains. Drainage ditches and storm sewer outlets shall be designed to avoid potential erosion.
