What is a good depth for putting bark around a playset?

Question

What is a good depth for putting bark in a playset? Here's a link to a picture of the project so far:

score 9 · Accepted Answer · answered Jun 03 '12 at 21:11

The Consumer Product Safety Commission has a chart for this:

http://www.cpsc.gov/cpscpub/pubs/323.html

Fall Height In Feet From Which A Life Threatening Head Injury Would Not Be Expected

Type of Material            6 "Depth    9 " Depth    12" Depth
Double Shredded Bark Mulch  6           10           11
Wood Chips                  7           10           11
Fine Sand                   5           5            9
Fine Gravel                 6           7            10

So I guess it depends how high that helicopter can get! – ArgentoSapiens Jun 05 '12 at 19:51 — ArgentoSapiens, Jun 05 '12 at 19:51

What is a good depth for putting bark around a playset?

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