Definitions

Definitions to common offsite construction terms.

Assembly.  A collection of modular components assembled into a whole or partial panelized system, module or industrialized building

Authority Having Jurisdiction (AHJ).  Organization, political subdivision, office or individual charged with the responsibility of administering and enforcing the provisions of the applicable code

Building Shell.  The structural framework, exterior walls and cladding that make up the building envelope only and does not include electrical, mechanical or plumbing systems

Building Thermal Envelope.  The basement walls, exterior walls, floor, roof and any other building elements that enclose conditioned space or provide a boundary between conditioned space and exempt or unconditioned space. (IECC)

Certification Label.  A decal, insignia, or alteration decal.

Closed Construction.  A modular building, modular component, or assembly manufactured in such a manner that all portions cannot be readily inspected at the installation site without disassembly, damage or destruction thereof.

Compliance Assurance Program.  Procedures that state the guiding principles and define the framework for ensuring that documents approved by a design review agency, or that industrialized housing and buildings inspected by a third-party inspection agency, comply with the mandatory building codes.

Compliance Control Program.  A manufacturer's system, documentation, and methods of ensuring that industrialized housing, buildings, and modular components, including their manufacture, storage, handling, and transportation conform with the approved construction documents and referenced standards.

Construction Documents.  Designs, plans, and specifications, including written, graphic, and pictorial documents, prepared or assembled for describing the design, location and physical characteristics of the elements of a project necessary to show compliance with the mandatory building codes.

Data Plate.  A plate attached by the manufacturer or installer, to an industrialized house, building, or modular component that contains identifying information that allows the local officials or end users to determine if the structure is suitable for installation in their jurisdiction, or location, or project.

Decal.  The approved form of certification issued by the authority having jurisdiction, to be permanently attached to the module or modular building indicating that it has been constructed to meet or exceed the mandatory building code requirements.

Design package.  The aggregate of all construction documents, including on-site documentation, and the compliance control manual, to be submitted by the manufacturer to the design review agency, or required by the design review agency for compliance review. A design package may include model- or project-specific plans and calculations, typical system packages and calculations, or any combination thereof. Unique on-site construction details and site-specific foundation drawings prepared for specific projects are not a part of the design package.

Design review agency.  An approved organization, private or public, determined by the authority having jurisdiction to be qualified by reason of facilities, personnel, experience, and demonstrated reliability to review construction documents and compliance control manuals to certify compliance to the applicable mandatory building codes by affixing their stamp of approval.

Equipment building, or shelter.  A type of building used to house equipment where the building is generally occupied during the installation and maintenance of the equipment housed in the building.

Final on-site inspection report.  A report issued by an approved inspector, or a record of final inspection issued by the authority having jurisdiction, indicating that the inspection of the on-site construction was successful in accordance with the mandatory building codes.

Industrialized Building.  A commercial structure that is constructed in one or more modules or constructed using one or more modular components built at a location other that the commercial site and is designed to be used as a commercial building when the module or modular component is transported to the commercial site and erected or installed.

Industrialized Housing.  A residential structure that is designed for the occupancy of one or more families, is constructed in one or more modules or constructed using one or more modular components built at a location other that the permanent site and is designed to be used as a permanent residential structure when the module or modular component is transported to the permanent site and erected or installed on a permanent foundation system.

Insignia.  The approved form of certification issued by the authority having jurisdiction to the manufacturer to be attached to the modular component, indicating that it has been constructed to meet or exceed the mandatory building code requirements.

Installation.  The assembly of a building, component or system on site and the process of affixing said building, component, or system to land, a foundation, footings or an existing building

Integration.   Act or process of coordinating the independent work of two or more manufacturers to merge a building shell for an equipment building with the electrical, mechanical, plumbing, and/or equipment before delivery to the installation site.

Manufacturer.  The entity responsible for the manufacturing of assemblies, panelized systems, modular buildings, or modular components

Manufacturing Plant.  The location other than the building site, at which modules or modular components are assembled or manufactured prior to transport to the final construction site

Modular Building.  Industrialized housing and buildings

Modular Component.  A sub-assembly, subsystem, or combination of elements (i.e. panelized systems, building shells or bathroom pods), for use as a part of a building system that is not structurally independent, but may be part of structural, plumbing, mechanical, electrical, fire protection, or other systems affecting life safety.

Module.  A three-dimensional, volumetric section of a modular building, designed and approved to be transported as a single section independent of other sections, to a site for on-site construction.

Non-site-specific building.  A building for which the permanent site location is unknown at the time of construction.

Off-Site Construction.  Any module building or modular component which is designed and constructed in compliance with this standard and is wholly or in substantial part made, fabricated, formed or assembled in manufacturing plants for installation - or assembly and installation - on a building site and has been manufactured in such a manner that all parts or processes cannot be inspected at the installation site without disassembly, damage to, or destruction thereof.

On-site construction.  Preparation of the site, foundation construction, assembly and connection of the modules or modular components, affixing the structure to the permanent foundation, connecting the structures together, completing all site-related construction in accordance with the approved construction documents and details.

Open Construction.  Any modular building, modular component or assembly manufactured in such a manner that all portions can be readily inspected at the building site without disassembly, damage or destruction

Panelized System.  Wall, roof or floor components that are constructed at a location other than the building site in a manner that prevents the construction from being adequately inspected at the building site without damage or reconstruction

Permanent Building.  A partially or completely assembled building constructed and designed to be used on one building site

Permanent foundation system.  A foundation system for industrialized housing or buildings designed to meet the applicable building code. In a permanent foundation system, anchorage of the building to the foundation is provided to resist the uplift and sliding forces that result from the application of the prescribed loads. The use of ground anchors, or earth augers, to resist uplift or sliding forces is not considered a permanent foundation

Quality Assurance.  Monitoring and inspection tasks performed by an agency or firm other than the manufacturer to ensure that the materials provided, and work performed by the manufacturer meets the requirements of the approved construction documents and referenced standards.  Quality assurance includes those tasks designated “special inspection” by the applicable building code

Quality Control.  Controls and inspections implemented by the manufacturer, as applicable, to ensure the material provided and work performed meet the requirements of the approved construction documents and referenced standards.

Registrant.  A person who is registered in accordance with this standard or the applicable states statutory requirements as a manufacturer, an industrialized retailer/installer, a design review agency, a third-party inspection agency, a third-party inspector, or a third-party site inspector.

Relocatable Building.  A partially or completely assembled building constructed and designed to be reused multiple times and transported to different building sites (IBC)

Replicable Industrialized Building.  An industrialized or modular building utilizing a prototypical design developed for application in multiple locations (with or without a defined final installation address) with minimal variation or modification.

Structure.  That which is built or constructed from the assembly of one or more modules or modular components designed to be used together to form a completed modular building.

Third-party inspection agency.  An approved person or entity determined by this standard or applicable states statutory requirements to be qualified by reason of facilities, personnel, experience, demonstrated reliability, and independence of judgment to inspect industrialized housing, buildings, and portions thereof for compliance with the approved plans, documentation, compliance control program, and applicable codes.

Third-party inspector.  An approved person determined by this standard or applicable states statutory requirements to be qualified by reason of experience, demonstrated reliability, and independence of judgment to inspect industrialized housing, buildings, and portions thereof for compliance with the approved plans, documentation, compliance control program, and applicable code. A third-party inspector works under the direction of a third-party inspection agency or TPIA.

Third-party site inspector.  An approved person determined by this standard or applicable states statutory requirements to be qualified by reason of experience, demonstrated reliability, and independence of judgment to inspect construction of the foundation and installation of industrialized housing, buildings, and portions thereof for compliance with the approved plans or engineered plans and the applicable code.

Tiny Houses.  A dwelling that is 400 square feet (37 square meters) or less in floor area, excluding lofts (IRC Appendix Q)