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15 Cards in this Set
- Front
- Back
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Veg protection - during design |
-local gov may req an existing tree survey -define limit of construction (small as 10' from bldg) -define material staging, tool cleaning, platn storage, -define heavy equip routes and access points -coordinate with other disciplines to plan utility trenches away from trees -specify financial penalties for tree damage as part of contract -include req for arborist evaluation in case of dispute in contract |
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Veg protection - during construction |
-erect protective structures and maintain until end of proj -temp tree protection fencing (chain link or well anchored snow fencing) -fencing to tree drip line min. -mulch or protection board -determine if supplemental water is needed |
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Pruning tree branches and roots |
-generally speced to be done under supervision of arborist -do not top trees -cut roots cleanly and apply root protection coating -keep exposed roots moist |
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Typical soil protection measures |
-sturdy fencing around soil protection measures -prohibit all traffic in protection areas -prohibit parking or storage of equip in protection areas -use inspection, education, and penalty program -mulch as if for tree roots -avoid draining runoff to protection areas |
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Principles of Sedimentation and Erosion Control |
-fit development to site terrain -minimize time soil is exposed -vegetate and mulch all exposed areas as quick as possible -min length and steepness of slopes -create stable drainangeways -trap sediment on site -inspect and maintain on site measures |
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Components of SWPPP |
Storm Water Pollution Prevention Plans -Narrative: gen description of project, construction sched, contact info -Maps and plans: usually overlaid on grading and drainage plans +locations of temp and permenant control measures -Construction sequence -Sediment control devise locations |
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Small erosion control devices |
Back (Definition) |
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Large erosion control devices |
Sediment pond. Excavated pond with fully engineered earthen dams. With emergency spillway for 25 yr storm. Also known as debris basins. |
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Temporary erosion control measures |
Slope protection Diversions. Divert water away from erodible areas Slope drains. Carry runoff down slope in drain pipe to prevent erosion. Construction entrance. Gravel pas and wash down area. Prevent mud from being washed into public roads. |
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Vegetative and permanent erosion control |
Back (Definition) |
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Rational Method |
Q=CIA C=composite runoff coefficient I=runoff intensity in in per hour A=watershed area in ac |
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Manning Equation |
Back (Definition) |
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Table for setting FFE with soil borings |
Back (Definition) |
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Circular curve |
Back (Definition) |
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Circular curve |
Back (Definition) |
