Occupancy Classifications and Loads

Slides:



Advertisements
Similar presentations
7 | Means of Egress (Life Safety Code)
Advertisements

MEANS OF EGRESS.
Determining the Occupant Load
Occupancy Classifications and Loads
Fire-Resistive Construction (2nd part)
of NFPA 101 Life Safety Code 2000 Edition Means of Egress
DEPARTMENT OF DEVELOPMENT SERVICES BUILDING DIVISION Ronald L. Lynn, Director/Building Official Gregory J. Franklin, Assistant Director Neil Burning, Manager.
Building CODES Arch 3011 Design Studio 1 Prof. Sargent Architecture Southern Polytechnic State University.
Michigan Department of Licensing and Regulatory Affairs Bureau of Construction Codes.
Life Safety Assessing life safety of a building is a process of estimating the quality of security against fire and its effects. Life safety implies avoiding.
Church Administrators & Emergency Planning
PERFORMANCE & CODE ANALYSIS TIMBer Inc. ·Brooke Fedder · Marie Rottschaeffer· Izzie Molinuevo· Tena Pettit·
Governmental Constraints on Construction Chapter 2.
Building Codes and Interior Design
Governmental Constraints on Construction Chapter 2.
© 2006 ITT Educational Services Inc. CD230 Architectural Design & Drafting: Unit 10 Slide 1 Unit 10 Commercial Construction.
Means of Egress Chapter 4.
Building Codes. Codes  Building Code –Regional  BOCA, SBCCI, CABO, UBC, CITY OF DALLAS, –National  IBC  Fire Code –NFC, UFC, NFPA, Life Safety 101.
Grace Bible Church Ministry Goals & Master Plan Presentation.
Code Analysis. Identify the relevant codes  Local building code  Local accessibility code (or ADA)  Local fire code (or the NFPA)  Mechanical, electrical.
Cafe Shay Townson Maddie Porter. Table of Contents  Client survey  Preliminary Design Work  Style and merits of the design concepts  Architectural.
Fire Inspection and Code Enforcement, 7 th Edition Chapter 4 — Construction Types and Occupancy Classifications Inspector I.
Decoded 3 – Egress and Life Safety Audio: , Code: Mute your phone (*6 to mute, #6 to unmute) This webinar is being recorded.
MINNESOTA CHAPTER AUTOMATIC FIRE ALARM ASSOCIATION Requirements of the 2003 Minnesota State Fire Code relating to Group R Occupancies September 14, 2006.
Code Officials and the Code Process.  To design the interior of the building in conjunction with codes, standards and federal regulations required in.
Chapter 44 Building Codes and Commercial Design. 2 Links for Chapter 44 Building Codes Design Categories Using the Codes Related Web Sites.
Code Analysis: Don’t try this at home. Identify the relevant codes  Local building code  Local accessibility code (or ADA)  Local fire code (or the.
ID 440: Project 1: Hospitality Design
The Essentials of Egress
INTD 51 human environments building code. building codes deal with almost every area of building planning, design & construction they are very complex.
Affordable housing project
Building Classifications: Occupancies.  Most things have classifications  Objective classifications  Drivers’ licenses  Hazardous materials  Tests.
Design Development Code analysis Partition types.
ID 234 Building Codes Fall 2012 Means of Egress Chapter 4.
Overall project Overall project Individual programmed spaces Individual programmed spaces Chapter 2 Building Occupancy.
Chapter 9 ID 234 Building Codes Fall 2012 Finish and Furniture Selection.
Means of Egress Part 3 Chapter 4.
Maine State Fire Marshals Office1 Laws and Codes Relating to Existing Apartment occupancies in the State of Maine Mark Stevens CFI-II, CFPS, CFPE Inspections.
Codes.
Codes and costing construction + materials II. Building Code (780 CMR) Building Code (780 CMR) Accessibility Code (521 CMR) Accessibility Code (521 CMR)
ID 234 Building Codes Fall 2011 Means of Egress Chapter 3, part II.
Code Officials and the Code Process.  Concentrates on the code process as a whole.  Different type of code officials  Various steps that are taken.
Chapter 4 ID 234 Building Codes Fall 2011 Means of Egress.
Building Occupancy.
Work Area Method Level 3 Alterations – Chapter 9 prescribes requirements. 50% of Building Area Rule.
Planning Living Areas. What is a Living Area? Living Room Dining Room Family Room Entryways.
Building Construction
Land Use and Development Regulations © 2010 Project Lead The Way, Inc.Civil Engineering and Architecture Our object in the construction of the state is.
Sprinkler Design FSE 221 – Fire Protection Systems
Exercise #2 (part 2) Based on what you read in Chapter 4, determine if the corridors and exit doors meet the requirements for egress width, according to.
Ontario Building and Fire Code Overview Presentation for the Downtown Revitalization Committee May 4, 2016 Jack Tosta, Chief Building Official Andrew McPherson,
The art and science of designing and construction of buildings.
Drawing Floor plans.
2009 IBC Egress Issues in Commercial Buildings, May 25, 2011
How Completed Interiors Are Achieved: Designing & Building
Chapter 2 Building Occupancy
MAJED A. DABDOUB, P.E.
NFPA 5000 Occupancy Classifications
RULES OF ENGAGEMENT.
Land Use and Regulations
Seekonk Board of Assessors
Occupant Loads FSE 101 – Fire Prevention.
Occupancy Classifications and Loads
NFPA 101 Occupancy Specific Requirements
Architectural Drawing
Land Use and Development Regulations
EET 323 – Electrical System Design Lecture 1: Introduction to Electrical System Design Radian Belu, PhD.
Building standards Mr. Da Silva.
Land Use Compatibility Matrix DRAFT – 10/21/08
EET 323 – Electrical System Design Lecture 3: Load Characteristics
Presentation transcript:

Occupancy Classifications and Loads Chapter 2 The occupancy classification is assigned to a building or a space in a building that is determined by the way the building or space is used. Occupancy Classifications and Loads

The first step You must always determine the occupancy classification and the occupancy load to establish the parameters that are to be used for your project.

Building Type vs. Occupancy An occupancy classification is assigned to the building or space. It is a broad classification. (educational) Building type is more specific. It is a specific class or category within an occupancy. (high school)

Occupant Load The number of people or occupants for which the code will require you to provide means of egress or exiting in your design. The occupant load sets the minimum level of exiting that must be provided Number of exits Widths of corridors Distance to nearest exit

Occupant Content The maximum number that can occupy the space. An older term used by the older codes.

Occupancy Classifications Must be assigned to the building or to a space within the building One of the most important steps in the code process Should be the first thing you determine when designing an interior

Occupancy Classification Will affect code requirement pertaining to: Occupant load Means of egress Egress capacities Finish selection Number of plumbing fixtures As well as other areas (shown in fig. 2.1, page 58)

Determining Occupancy Classifications Existing buildings are already determined Buildings with different types of tenants require that occupancy classifications be determined for each tenant. Careful attention to renovation work (ie: a warehouse converting to apartments) Have a code official approve your decision if you are unsure

Determining Classifications The ten most common occupancies are: Assembly Business Educational Factory or Industrial Hazardous Institutional Mercantile Residential Storage Utility and Misc.

Determining Classification You will need to know three things before you can accurately determine the occupancy classification The type of activity occurring The expected number of occupants and If any unusual hazards are present These factors can affect the classification of a building type. (ie: if a particular building is planned to serve a large number of people, it may be classified as an Assembly)

Hazards Unusual hazards can either change an occupancy to a stricter classification or simply require all or part of a building to be classified as a Hazardous occupancy…subject to tougher codes. (page 61) Large groups of people Night occupancies Mobility of occupants Familiarity of occupants Potential spread of fire

List of Occupancies Refer to pages 63-83

New vs. Existing Whether an occupancy is new or existing becomes important when using the LSC. An occupancy is considered new if it falls in the following categories: New construction Relocation into an existing building New addition to an existing building Occupancy is staying in existing space, but changing size or use

Other considerations Incidental Use (page 88) (hazardous areas that are relatively small, storage, furnace rooms, boiler rooms, laundry rooms etc.) Additional fire and smoke protection may be required. Accessory Occupancy (page 89) A smaller occupancy that is typically less than 10% of the total area of the floor on which it is located. Mercantile (M) with design center (B) can be considered as an accessory and not have to design using two occupancy requirements

Mixed Occupancies Mixed Occupancies: When two or more occupancies occur in the same building - under one roof. (Hotels with restaurants, ballrooms, exercise rooms will be both Assembly and Business) Trend for the future Different codes will apply to each Requires fire-walls between spaces Treat as its own entity Office building with a childcare center (Business/Educational) Hospitals with cafeterias (Institutional/Assembly) Malls with food courts (mercantile/assembly)

ADA Regulations Certain occupancy classifications are also affected by the ADA. (page 95) Federal building and 1 and 2 family dwelling are not regulated by the ADA. Restaurants and Cafeterias (Assembly) Libraries (business or educational) Mercantile and many businesses Medical (healthcare) Transient lodging (residential and correctional/detention) Childcare

Occupant Loads An occupant load is the second thing you need to determine at the beginning of a project. It sets the minimum number of occupants for which you must design the means of egress from a building or specific area. Each code set a predetermined amount of space or sq. ft for each occupant. This figure is called the load factor.

Load factor The load factor is used to help you determine the occupant load for a space or a building. The load factor will help to determine the number of people that will be using the corridors, stairs and exits in the event of a fire See table on page 101.

Load Factor This factor indicates the amount of space or area it is assumed each person present will require Although the sq foot figures may seem high for one person, they allow for furniture and equipment and in some cases corridors, closets and other miscellaneous areas. It is always represented in sq. feet; however, it can be a gross or a net figure.

Gross vs. Net The gross area refers to the building as a whole and includes all misc. spaces within the exterior walls. The net area refers to actual occupied spaces and does not include accessory spaces such as corridors, restrooms, utility closets etc. When net figures are required, it is assumed that the occupants who are using an ancillary area would have left the occupied space to do so. (ex: a student walking in a hallway would already have been counted as a student in the classroom) Note: a Load factor has nothing to do with individual space allocation with planning a facility.

The formula page 102 Occupancy Load = Floor Area (sq. ft) / Occupant Factor ERROR IN BOOK!! OL = Sq. Ft. DIVIDED by Load Factor Please change this.

Important note… Even if you know that your client will have fewer occupants, you must plan the space based on the determined load figures as required by the codes.

Mixed Used or Occupancies You must figure each occupant load separately Example: Multistory buildings may have mercantile, business on one floor. Figure each occupancy type for each floor and add them together

Multiple Use Example wasTemple Baptist Church prior to construction of new sanctuary: Worship hall is also a basketball court Fellowship hall is also cafeteria Figure the occupancy load based on the largest concentration of people.

Fixed Seats Common in Assembly occupancies The seats are considered fixed if they do not easily move. Theaters Churches Stadiums, bleachers Do not use standard formula Count actual seats For seats without arms, figure 18” for each occupant 12’ pew is 144” divided by 18 = 8 people

Means of Egress The occupant load that you determine in the beginning of a project will be used again later in your code research to determine the means of egress, such as The number of exits Width of exits Placement of exits

Final Note Every assembly room or Assembly occupancy usually requires the approved occupant load to be permanently posted near the main exit from the space. A typical sign might read “Occupancy by more than 100 persons is dangerous and unlawful.”