Colorado best dirt composition
Working with a group of people to build a community pump track in Alamosa county. Was wondering what are the best dirt compositions for Colorado? Have done some research that says high clay content in screened loam, but what composition would that be? 60/40 clay/loam? more or less? Also have seen recommendations for pitchers mound dirt, which is 40% clay, 40% sand, and 20% silt. Currently have screened loam, and just need to specify how much clay should be added.
Wow. This is the best question asked in this forum in years.
Me, I don't know. But I hope IndecentExposure pipes in as he was one of the guys who helped build Golden Bike park.
You have just been mentally Rick Roll'd. Yup you're thinking about it right now aren't you? Don't fight it.
60% clay is a clay soil.
40-40-20 is a clay loam, but since loam is from 5-25% clay it's hard to say how much clay to add without doing a soil texture analysis on it first to find out.
I probably would not go more than 1:10.
Originally Posted by kristenHS2
Originally Posted by UncleTrail
Awesome thank you!
Keep in mind, clays tend to swell and shrink causing cracking at the surface.
For more reference:
DJ, pump track plans
Pump Track Nation
It's either food or pump track in my yard. Eating won, this year.
i like rocks
my biggest design criteria for pumptrack/dj dirt has always been:
Tim M Hovey
IMBA CAMBr COMBA BMA
Gary Fisher Rig
Blk Mrkt MOB 4x
1999 F350 PSD
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