# Relandscaping questions **URL:** \ **Category:** Factual Questions\ **Created:** [April 26, 2016, 3:12am UTC](https://boards.straightdope.com/t/relandscaping-questions/753152 "2016-04-26T03:12:31Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Saint\_Cad](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/saint_cad/32/18907_2.png) [@Saint\_Cad](https://boards.straightdope.com/u/Saint_Cad)\ **Post date:** [April 26, 2016, 3:12am UTC](https://boards.straightdope.com/t/relandscaping-questions/753152/1 "2016-04-26T03:12:31Z")
The previous owner thought she was a landscape architech. Most of the fixed are pretty straightforward but some issues I want feedback on. The sprinklers are currently in-ground hoses leading to the plastic heads on stakes. I want to replace them with PVC and connect it to the existing zone system. I also want to lay new sod so my thought was to rototill the whole yard, dig the trenches for the sprinklers and lay the sod on top. Am I looking at this too simply? ---
**Author:** ![usedtobe](https://avatars.discourse-cdn.com/v4/letter/u/ec9cab/32.png) [@usedtobe](https://boards.straightdope.com/u/usedtobe)\ **Post date:** [April 26, 2016, 4:44am UTC](https://boards.straightdope.com/t/relandscaping-questions/753152/2 "2016-04-26T04:44:04Z")
I have a DIY sprinkler system (local law requires irrigated front yard - yep - CA). The flex hose (crap #1) is about 6" (crap #2) below grade. Some of the heads are actually above grade - ans that is using the cheapest 2" head at HD. I saw some pros digging a circuit - a bit more than knee-deep. They were working in midday sun at approx. 100 degrees F. These are the workers the GOP wants to deport. Get a trenching machine for the PVC - min 3/4", use 1/2" risers. Rototill first, then trench. Figure out how to get the heads on and install sod. ---
**Author:** ![Boyo\_Jim](https://avatars.discourse-cdn.com/v4/letter/b/87869e/32.png) [@Boyo\_Jim](https://boards.straightdope.com/u/Boyo_Jim)\ **Post date:** [April 26, 2016, 1:12pm UTC](https://boards.straightdope.com/t/relandscaping-questions/753152/3 "2016-04-26T13:12:41Z")
My first thought is to wonder how deep the hoses are buried and whether tilling the whole lawn will reach the hoses and chop them up. But I suppose if you want to replace them all a little chopping up won’t matter. ---
**Author:** ![Saint\_Cad](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/saint_cad/32/18907_2.png) [@Saint\_Cad](https://boards.straightdope.com/u/Saint_Cad)\ **Post date:** [April 26, 2016, 3:19pm UTC](https://boards.straightdope.com/t/relandscaping-questions/753152/4 "2016-04-26T15:19:09Z")
most of the hoses are on the surface