Crosby Park: Bluff Trail Project
Design Details
Design Strategies for an Ecologically Sustainable Bluff Trail
Wet Ravine Condition The most severely eroded areas of the bluff trail are in the ravines, where stormwater repeatedly scours out the base of the ravines and the sides collapse. Some such erosion is a naturally-occuring condition, but here it is aggravated by the presence of storm water outlets at the top of the bluff, bringing water in much larger quantities than would naturally exist. This dramatic erosion cannot be slowed or stopped without dealing with the stormwater outlets. However, we can help people navigate the ravines while still allowing water to pass through.
Detail #10: Bridge
elevation
post & rail section
2”x2” balusters
screws dipped in linseed oil
post & rail elevation 8”
38”
6”x6” treated timber posts
6”x6” treated timber posts with top and bottom cut at 45 degree angle spaced 4’0” O.C.
18”
42”
2”x2”x30” baluster with top and bottom cut at 45 degree angle spaced 8” O.C.
12”
concrete foundation
plan
1/2” galvanized bolts 2”x6” brace at center of posts 4”x12” wooden beam
4’0”
32
post & rail plan screws dipped in linseed oil
2”x6” handrails