Administrative Rules of Montana
Department 24 - LABOR AND INDUSTRY
Chapter 24.301 - BUILDING CODES
Subchapter 24.301.5 - Requirements for Recreational Vehicles and Factory-Built Buildings
Rule 24.301.535 - APPLICATION FOR MODEL PLAN REVIEW

Universal Citation: MT Admin Rules 24.301.535

Current through Register Vol. 6, March 22, 2024

(1) Any manufacturer of units shall make application to the bureau for plan review of a model or model group prior to construction. The application shall include:

(a) the plan and system inspection fees as required by ARM 24.301.565;

(b) the quality control manual as outlined in ARM 24.301.536 and 24.301.543;

(c) substantiating calculations or test results indicating details of construction, plumbing, mechanical, and electrical plans when such details are required;

(d) one copy of the complete plans and specifications drawn on paper of sufficient size to provide complete details of work proposed or presented electronically in such a manner as to provide complete details of work proposed which must show:
(i) dimensioned floor plan(s);

(ii) proposed use of rooms and method of ventilation;

(iii) size, type and location of windows and exterior doors;

(iv) all necessary cross sections;

(v) floor, wall, ceiling, and roof construction details;

(vi) typical connections;

(vii) design live and dead loads;

(viii) grade and quality of materials; and

(ix) substantiating calculations or test results, where required including energy calculations as applicable.

(e) the following electrical specifications must be set forth in the plan:
(i) type and size of feeder assembly;

(ii) voltage and amperage of branch circuit panelboard;

(iii) branch circuit identification, amperage, or overcurrent protection device wire size and type;

(iv) voltage and amperage of fixed appliances;

(v) location of all appliances and fixtures;

(vi) location of all electrical outlets (receptacles and lights); and

(vii) number of outlets and appliances on each circuit and circuit rating.

(f) the plan may be drawn to scale or schematic. It must set forth the following mechanical information:
(i) description of all materials, appliances, fittings, pipe, tubing, vents, and ducts;

(ii) BTUH input rating of all fuel burning appliances;

(iii) size of openings for combustion air, except where combustible air is an integral part of an approved appliance;

(iv) size, length, type, and location of vents and vent connectors;

(v) type, minimum dimension, and gauge of air ducts;

(vi) minimum free area and location of circulating air supply inlet; and

(vii) minimum free area and location of all air openings.

(g) the plan may be drawn to scale or schematic. It must set forth the following plumbing specifications:
(i) description of all materials, fixtures, fittings, pipe tubing, shower stalls, and walls;

(ii) diameter and type of pipe and tubing, and length of all trap arms;

(iii) size and type of fittings;

(iv) grade of drainage piping; and

(v) method of securing all piping.

AUTH: 50-60-203, 50-60-401, MCA; IMP: 50-60-203, 50-60-401, 50-60-402, MCA

Disclaimer: These regulations may not be the most recent version. Montana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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