ADOPTS WITH AMENDMENTS:

International Residential Code 2015 (IRC 2015)

Part I — Administrative

Part II — Definitions

Part III — Building Planning and Construction

Part IV — Energy Conservation

Part V — Mechanical

Part VI — Fuel Gas

Part VII — Plumbing

Part VIII — Electrical

Part IX — Referenced Standards

Heads up: There are no amended sections in this chapter.

Appendix E Manufactured Housing Used as Dwellings

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Section AE101 Scope

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AE101.1 General

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Section AE102 Application to Existing Manufactured Homes and Building Service Equipment

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AE102.1 General

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AE102.2 Additions, Alterations or Repairs

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AE102.3 Existing Installations

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AE102.4 Existing Occupancy

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AE102.5 Maintenance

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AE102.6 Relocation

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Section AE201 Definitions

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AE201.1 General

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Section AE301 Permits

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AE301.1 Initial Installation

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AE301.2 Additions, Alterations and Repairs to a Manufactured Home

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AE301.3 Accessory Buildings

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AE301.4 Exempted Work

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Section AE302 Application for Permit

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AE302.1 Application

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AE302.2 Plans and Specifications

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AE302.3 Information on Plans and Specifications

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Section AE303 Permits Issuance

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AE303.1 Issuance

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AE303.2 Retention of Plans

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AE303.3 Validity of Permit

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AE303.4 Expiration

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AE303.5 Suspension or Revocation

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Section AE304 Fees

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AE304.1 Permit Fees

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AE304.2 Plan Review Fees

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AE304.3 Other Provisions

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AE304.3.1 Expiration of Plan Review

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AE304.3.2 Investigation Fees—Work Without a Permit

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AE304.3.2.1 Investigation

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AE304.3.2.2 Fee

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AE304.3.3 Fee Refunds

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AE304.3.3.1 Permit Fee Erroneously Paid or Collected

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AE304.3.3.2 Permit Fee Paid When No Work Done

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AE304.3.3.3 Plan Review Fee

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Section AE305 Inspections

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AE305.1 General

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AE305.2 Inspection Requests

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AE305.3 Inspection Record Card

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AE305.4 Approval Required

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AE305.5 Required Inspections

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AE305.5.1 Structural Inspections for the Manufactured Home Installation

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AE305.5.2 Structural Inspections for Accessory Building and Structures

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AE305.5.3 Building Service Equipment Inspections

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AE305.5.4 Final Inspection

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AE305.6 Other Inspections

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Section AE306 Special Inspections

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AE306.1 General

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Section AE307 Utility Service

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AE307.1 General

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Section AE401 Occupancy Classification

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AE401.1 Manufactured Homes

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AE401.2 Accessory Buildings

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Section AE402 Location on Property

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AE402.1 General

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Section AE501 Design

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AE501.1 General

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AE501.2 Manufacturer's Installation Instructions

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AE501.3 Rationality

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Section AE502 Foundation Systems

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AE502.1 General

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AE502.2 Soil Classification

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AE502.3 Footings and Foundations

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AE502.4 Foundation Design

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AE502.5 Drainage

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AE502.6 Under-Floor Clearances—Ventilation and Access

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Section AE503 Skirting and Perimeter Enclosures

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AE503.1 Skirting and Permanent Perimeter Enclosures

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AE503.2 Retaining Walls

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Section AE504 Structural Additions

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AE504.1 General

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Section AE505 Building Service Equipment

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AE505.1 General

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Section AE506 Exits

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AE506.1 Site Development

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AE506.2 Accessory Buildings

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Section AE507 Occupancy, Fire Safety and Energy Conservation Standards

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AE507.1 General

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Section AE600 Special Requirements for Foundation Systems

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AE600.1 General

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Section AE601 Footings and Foundations

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AE601.1 General

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Section AE602 Pier Construction

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AE602.1 General

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Section AE603 Height of Piers

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AE603.1 General

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Section AE604 AE101 Anchorage Installations

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AE604.1 AE101.1 Ground Anchors

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Ground anchors shall be designed and installed to transfer the anchoring loads to the ground. The load-carrying portion of the ground anchors shall be installed to the full depth called for by the manufacturer's installation instructions and shall extend below the established frost line into undisturbed soil.

Manufactured ground anchors shall be listed and installed in accordance with the terms of their listing and the anchor manufacturer's instructions, and shall include the means of attachment of ties meeting the requirements of Section AE102. Ground anchor manufacturer's installation instructions shall include the amount of preload required and load capacity in various types of soil. These instructions shall include tensioning adjustments which may be needed to prevent damage to the manufactured home, particularly damage that can be caused by frost heave. Each ground anchor shall be marked with the manufacturer's identification and listed model identification number which shall be visible after installation. Instructions shall accompany each listed ground anchor specifying the types of soil for which the anchor is suitable under the requirements of this section.

Each approved ground anchor, when installed, shall be capable of resisting an allowable working load at least equal to 3,150 pounds (14 kN) in the direction of the tie plus a 50-percent overload [4,725 pounds (21 kN) total] without failure. Failure shall be considered to have occurred when the anchor moves more than 2 inches (51 mm) at a load of 4,725 pounds (21 kN) in the direction of the tie installation. Those ground anchors which are designed to be installed so that loads on the anchor are other than direct withdrawal shall be designed and installed to resist an applied design load of 3,150 pounds (14 kN) at 40 to 50 degrees from vertical or within the angle limitations specified by the home manufacturer without displacing the tie end of the anchor more than 4 inches (102 mm) horizontally. Anchors designed for the connection of multiple ties shall be capable of resisting the combined working load and overload consistent with the intent expressed herein.

When it is proposed to use ground anchors and the building official has reason to believe that the soil characteristics at a given site are such as to render the use of ground anchors advisable, or when there is doubt regarding the ability of the ground anchors to obtain their listed capacity, the building official may require that a representative field installation be made at the site in question and tested to demonstrate ground-anchor capacity. The building official shall approve the test procedures.

AE604.2 AE101.2 Anchoring Equipment

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Anchoring equipment, when installed as a permanent installation, shall be capable of resisting all loads as specified within these provisions. When the stabilizing system is designed by an engineer or architect licensed by the state to practice as such, alternative designs may be used, providing the anchoring equipment to be used is capable of withstanding a load equal to 1.5 times the calculated load. All anchoring equipment shall be listed and labeled as being capable of meeting the requirements of these provisions. Anchors as specified in this code may be attached to the main frame of the manufactured home by an approved 3/16-inch-thick (4.76 mm) slotted steel plate anchoring device. Other anchoring devices or methods meeting the requirements of these provisions may be permitted when approved by the building official.

Anchoring systems shall be so installed as to be permanent. Anchoring equipment shall be so designed to prevent self-disconnection with no hook ends used.

AE604.3 AE101.3 Resistance to Weather Deterioration

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All anchoring equipment, tension devices and ties shall have a resistance to deterioration as required by this code.

AE604.4 AE101.4 Tensioning Devices

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Tensioning devices, such as turnbuckles or yoke-type fasteners, shall be ended with clevis or welded eyes.

Section AE605 AE102 Ties, Materials and Installation

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AE605.1 AE102.1 General

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Steel strapping, cable, chain or other approved materials shall be used for ties. All ties shall be fastened to ground anchors and drawn tight with turnbuckles or other adjustable tensioning devices or devices supplied with the ground anchor. Tie materials shall be capable of resisting an allowable working load of 3,150 pounds (14 kN) with no more than 2-percent elongation and shall withstand a 50-percent overload [4,750 pounds (21 kN)]. Ties shall comply with the weathering requirements of Section AE604.3. Ties shall connect the ground anchor and the main structural frame. Ties shall not connect to steel outrigger beams which fasten to and intersect the main structural frame unless specifically stated in the manufacturer's installation instructions. Connection of cable ties to main frame members shall be 5/8-inch (15.9 mm) closed-eye bolts affixed to the frame member in an approved manner. Cable ends shall be secured with at least two U-bolt cable clamps with the "U" portion of the clamp installed on the short (dead) end of the cable to ensure strength equal to that required by this section.

Wood floor support systems shall be fixed to perimeter foundation walls in accordance with provisions of this code. The minimum number of ties required per side shall be sufficient to resist the wind load stated in this code. Ties shall be as evenly spaced as practicable along the length of the manufactured home with the distance from each end of the home and the tie nearest that end not exceeding 8 feet (2438 mm). When continuous straps are provided as vertical ties, such ties shall be positioned at rafters and studs. Where a vertical tie and diagonal tie are located at the same place, both ties may be connected to a single anchor, provided the anchor used is capable of carrying both loads. Multiple-section manufactured homes require diagonal ties only. Diagonal ties shall be installed on the exterior main frame and slope to the exterior at an angle of 40 to 50 degrees from the vertical or within the angle limitations specified by the home manufacturer. Vertical ties which are not continuous over the top of the manufactured home shall be attached to the main frame.

Section AE606 Referenced Standards

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