What This Standard Covers
- Burial depth requirements by conduit type: PVC, HDPE, rigid metallic, and direct-burial
- Stub-up position tolerances relative to hardscape features, furniture, and landscape elements
- Conduit fill limit compliance for runs that will be inaccessible after hardscape
- End cap and pull string requirements for all conduit before concrete is placed
- Inspection checklist for GC sign-off before hardscape contractor mobilizes
- Remediation options when stub-up positions deviate from the approved plan
Who It Is For
- Landscape and hardscape contractors coordinating with low-voltage trades before stone or concrete
- General contractors managing the sequencing of outdoor conduit and hardscape installation
- AV integrators verifying conduit placements before the hardscape window closes
- Architects and landscape architects confirming conduit positions in hardscape drawings
When To Use It
- Before any concrete is poured or stone base course is placed over outdoor conduit runs
- At the landscape pre-construction meeting to confirm conduit routing and stub-up positions
- After excavation is complete but before backfill to verify depth and routing
- Before the hardscape contractor mobilizes for final base installation
Read or Download the PDF
The full standard, including specifications, diagrams, and field references, is in the embedded PDF below. Read it inline or download it for your jobsite folder.
Field Notes
Hardscape is one of the most costly things to cut and patch on a residential property. A conduit stub-up in the wrong position, or a missing conduit for a future outdoor zone, means breaking stone or concrete. This standard defines the verification steps that prevent that.
The challenge is coordination timing. The landscape contractor may be working on a compressed schedule, and the AV rough-in has to happen within a specific window. This document gives both trades a clear checklist so the handoff is clean and the hardscape can proceed without delay.