Putting in an entrance culvert

[dave1949]

A 20' pipe is also too narrow if there will be semi-trucks turning in-out and the road is not a wide one.

I live on a narrow 2-lane road with about non-existent berms that would give a truck extra room to swing. I have two 20' culverts (40') and large trucks use every inch of it.

If you put in two culverts end-to-end, there is a joining collar available, not expensive.

 

[s219]

We got through the entire homebuilding process, with many truck deliveries, on that 20' wide pipe. Never had a problem, though because this is a long driveway with no turnaround, almost every truck backed in and spent time lining up first.

After we moved in, I widened the pipe to 30' using leftover pipe ends from another culvert I installed (the N2 pipe has bell & spigot ends, so the pieces just plugged in). I didn't actually widen the driveway in the process, but rather, added more substantial shoulders on each side, increased the turn radius, and then graded everything and put in rocks around the pipe ends. Only got one pic from that:



Recently we got 40 tons of crusher run delivered to re-surface the whole driveway, and that has settled down well. Ended up paying $20/ton for the crusher run, delivered.

 

[two_bit_score]

Looks like a fine job, s219! What did you compact it with?

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[s219]

I used a hand tamper for the bed under the pipe. The top layers were compacted by tractor wheels!