2009年11月2日 · Interesting question. I'm working on a similar project here in Georgia--extending a gravel parking lot for trucks. In general the existing slope is 4-5 percent, but in one area it is 2.5 percent, and that's where they're having problems with ponding and drainage. Seems that 4-5 percent might work best in this situation.

2005年11月8日 · I would consider a crushed gravel parking lot as permeable (unless it has a geotextile underlay). The British Standard BS EN 752-4 gives a run off coefficient for permeable areas as 0.0-0.3. I would size the pipes capacity based on the higher flow and then check to ensure it has sufficient fall to be self cleansing at a lower flow.

2017年6月19日 · I use a minimum of 2% slopes in gravel parking lots. My client wants to use 1% slopes due to the amount of fill that will need to be brought in from off-site. I explained the risks of using a slope less than 2% to the client, but he is willing to take the risks. Will I …

2007年6月8日 · Gravel parking lots usually need a surface course of crushed aggregate, which includes some (usually ~8%) binder (read silt & clay). So it may not infiltrate water so well. And ofter other soil tracked in can lessen its infiltration capacity over time. Puddles may well infiltrate/dry out sooner than in pavement, but in the meantime damage is done.

2007年6月8日 · Don't know what a "6" on 1" gravel parking lot" consists of. However, as a minimum, you should specify a minimum of 4" of crushed stone base course (CA-6) on top of a compacted sub-grade. Bituminuous surface mix should be 2" surface course on top of a 6" binder course for a total of 8" thick bituminous.

2009年3月16日 · Not specifically on gravel lots but off roadway conditions all the time. Yes, a concrete apron is used around the perimeter of the inlet. If concern is sediment or gravel ending up in the inlet sump one can provide space at the bottom to collect debris/trash. It will need to be maintained, however.

2016年6月20日 · if you are just worried about gravel plugging the grate, than make sure the grate is large enough so the gravel will go through. the inlet structure should have a sump at the bottom to catch the gravel and debris. a concrete apron is often used for erosion protection around grated inlets. if you have a lot of sediment moving, then you should either stabilize the gravel or …

2003年4月24日 · The 6 inches of gravel thickness that you referred to is excessive in my view. Even with well compacted open gravel structures, the gravel will ravel under traffic. Befor you know it, an abundance of the gravel will find its way to the shoulder of the road, hindering surface drainage. A thinner gravel structure, 3 inches or so, is more like it.

2007年12月7日 · I'm involved with a project where it appears the gravel parking lot has been constructed over the septic leach field. My question - is it ever "okay" to park over leach fields? Even if the leach lines were designed to a depth and strength to prevent crushing, it seems that the continuous loads of vehicles would cause compaction, altering the ...

2007年10月22日 · I have a challenging site fitting a new building & parking between two existing buildings. The best grade I can get on my parking lot grades is 6.5% to 6.9%. I normally use 5.0% as maximum grade in parking lots. Anyone constructed ~6.9% slopes. How do they work now? Thank you in advance for your help. Best Regards as