---
kind: "section"
citation: "24 C.F.R. § 3285.310"
title: "24"
number: "3285.310"
heading: "Pier location and spacing."
url: "https://uscodex.org/cfr/24/3285.310"
---

# §3285.310. Pier location and spacing.

- (a) The location and spacing of piers depends upon the dimensions of the home, the live and dead loads, the type of construction (single-or multi-section), I-beam size, soil bearing capacity, footing size, and such other factors as the location of doors or other openings.
- (b) Mate-line and column pier supports must be in accordance with this subpart and consistent with Figures A through C to this section, unless the pier support and footing configuration is designed by a registered professional engineer or registered architect.
- (c) Piers supporting the frame must be no more than 24 inches from both ends and not more than 120 inches center to center under the main rails.
- (d) **Pier support locations.** Pier support locations and spacing must be presented to be consistent with Figures A and B to [§ 3285.312](/cfr/24/3285.312.md), as applicable, unless alternative designs are provided by a professional engineer or registered architect in accordance with acceptable engineering practice.

## Notes

### Authority

Authority: 42 U.S.C. 3535(d), 5403, 5404, and 5424.

### Source

Source: 72 FR 59362, Oct. 19, 2007, unless otherwise noted.