Apr 1, 2008 · If I need 1' of bedding material and I need to come up the pipe 1/3 of the diameter for chinking, I will figure my volume as follows I figure the ditch length x width x depth x 10 > 20% (depending on the material) for compaction and loss divided by 27 = volume in cy's from the bottom of the pipe down.

Sep 2, 2006 · For underground cable or light pipe use sand for water lines use sand then the dirt dug out of the hole over top the sand. The sand is only maybe 12"s above the pipe. The backfill is carefully dumped into the trench if there is big rocks they are thrown to the side. Once there is enough protection above the pipe then its backfilled with rocks ...

Jul 29, 2008 · For ADS piping I like to use #57 stone as bedding and either #57 or #8910 as side and top backfill. The smaller #8910 seems to seat well around the spring line of the pipe and leaves less voids. I would not use sticky clays or any large pieces of rock < 3/4"-1" as bedding or backfill directly around the pipe.

Sep 29, 2012 · Gents, I've seen you guys in the USA use pipe bedding skips on pipelines, i assume to stop wasting materials. We have been using skips for concrete however are considering fabricating something simialar for pipe bedding, which can be pulled along. We would be using them with 13 and 20 tonne...

Sep 24, 2010 · I am installing a 48" galvanized pipe for a residential driveway crossing a creek. Right now the creek is dry but there is evidence of erosion on the upstream side. My question is can I use 21A stone (crusher run) to bed the sides of the pipe. Normally I would use 57s (clean stone) because I don't have to compact it.

Jul 5, 2011 · The other members have provided excellent, sound advice. As CM1995 points out, one thing I see commonly overlooked is the pipe size. The maximum flow volume capacity is roughly proportional to the cross sectional area of the pipe; for round pipe, the area varies with the square of the radius. Think a 30" is "twice as big" as a 15"?

Jun 1, 2007 · The loader with operator and 2 men ran bedding, usually sand, laid pipe, ran sand cover over pipe, usually 6" to 12" and moved on. The 2nd excavator was doing backfill in layers, placing and spreading with the bucket and compacting with a sheepsfoot roller attachment on the quickhitch after he dropped the bucket.

Nov 29, 2004 · Some authorities require sand bedding, others don't. Ductile iron is pretty tough stuff. Certainly you wouldn't put any big rocks around it, and you'd try to be sure it's bedded well, but it's not going to sag or go egg shaped like plastic sewer pipe might. Anywhere you put a fitting (a bend or tee), you'll need to back it up with a "thrust block".

Dec 21, 2014 · L90s are all our pipe crews run. They did a job this past summer, and the stock piles were 2 blocks away. Calvin was able to keep a 350, and a 330 excavator going with stone, and bedding, as well as bring manhole sections, frame, …

Jan 15, 2007 · I like the artic because it is more versatile than a scraper. We use the artic to haul brush, topsoil, mud, pipe, bedding gravel (it makes a nice mobile gravel box - although it is a lot of $$ for a gravel box ) as well as mass excavation. With that said, we are currently on a job that has approx. 500K CY to move over 75+/- acres.