08-24-1998 Council Packet - Laserfiche WebLink

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r drainage and irrigation are so disruptive that it becomes necessary to partially reshape everything to tie it aU together. The finishing also includes preparation for the turC which is a series of agrarian practices that produce a proper planting ted. This process is always billed aj a lump sum amount. The amount estimated for the work at Wayzata is SI 10,000. DR.VINAGE For a golf course to have nice turf it is imperative that the golf holes drain well. In order for the course to drain well, both the surface and subsurface areas must be designed to handle storm and nuisance water. Bunkers It is essential that all of the bunkers have drainage in order to function properly. Each bunker will require an estimated 120 lineal feet of 4 inch perforated drain pipe with gravel and a coarse sand liner (see detail). Also, a 100-foot section of 4-inch pipe (non- perforated) is required as an outfidl line for each bunker. The cost for the 220 feet of drainpipe (plus gravel and coarse sand) is estimated to be $6.50 per lineal foot or $1,430 for each bunker (the costs for sand and gravel are based on quotes fi’om Todd at Plaisted Companies). The total estimated cost for the 63 bunkers is $90,090. Pipe While most of the out&ll lines for the bunkers, greens and tees will connect to creeks, ponds or other non-play areas, some connection pipe will probably be necessary. Since this system has not yet teen designed, it is suggested that an allowance of $20,000 be included in this study. Therefore, the total drainage estimate for this project (not including the optional fairway work of $605,900) is $110,090. FEATURE CONSTRUCTION Tees It is equally as important for the tees to have a playing sur&ce as good as the greens, and be constructed at the proper yardage for each hole. Based on the current plan, forty-nine (49) tees will be reconstructed in the following manner: 1. Construct subgrade 6” below proposed finish grade; subgrade should have minimum slope of l.5?o firom edge to center; 2. Excavate trench 8 ” wide x 14 ” deep in the subgrade in the center of the tee; spread 2” of pea gravel in the bottom of the trench and lay a 4 ” perforated double wall HDPE drain line on the gravel ted, cover with gravel and 2” of coarse sand; install a non-perfbrated double wall HDPE out&ll line to the discharge as shown on the plans or as determined in the field; instaU locator wire in the trench; backfill trench with gravel to the top (see detail plan); 3. Spread approved tee mix evenly over the subgrade; shape tees such that the fi'ont of the tee is perpendicular to the flight of the tee shot; grade tee sur&ces to a level finished grade; 4. Create shallow swales where possible to divert sur&ce drainage away from tee tops.