barandales de diseño, Esquemas y mapas conceptuales de Diseño

¡Descarga barandales de diseño y más Esquemas y mapas conceptuales en PDF de Diseño solo en Docsity!

ADA, Building Codes, and Standards

Relating to Handrails and Guards

Presented by:

The Wagner Companies

Credit(s) earned upon completion of this course will be reported to AIA CES for AIA members. Certificates of completion for both AIA members and non-AIA members are available upon request.

This course is registered with AIA CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material or any method or manner of handling, using, distributing, or dealing in any material or product.

Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.

Course

Description

This course will discuss the difference between handrails and guardrails, and building codes related to the design and installation of such rails.

Gain knowledge of available resources to answer code-related questions.

Learning

Objectives

At the end of this course, you should be able to:

• Explain the differences between handrails and guardrails.
• Discuss building codes related to the design and installation of handrails and guardrails.
• Apply the International Code Council’s I-Codes to handrails and guardrails.
• Understand the Americans With Disabilities Act (ADA) and Accessible and Usable Buildings and Facilities (ANSI A117.1) in relation to handrails and guardrails.

Code Bodies and Standards

• International Code Council (ICC)
  • International Residential Code (IRC)
  • International Building Code (IBC)
• National Fire Protection Association (NFPA)
  • NFPA 101
  • NFPA 5000
• Accessibility
  • ANSI-A117.1: Accessible & Usable Buildings & Facilities
  • Americans with Disabilities Act (ADA)
  • Architectural Barriers Act (ABA)
• Occupational Safety and Health Administration (OSHA)

International Code Council

 Building Officials Code Administrators International (BOCA) – National Building Code (NBC);

 Southern Building Code Congress International (SBCCI) – Southern Building Code (SBC); and

 International Conference of Building Officials (ICBO) – Uniform Building Code (UBC).

 In 1999, these three code groups combined to create the International Code Council (ICC).

 Prior to 1999, there were multiple model code bodies across the country, including:

National Fire Protection

Association

• This group is known for NFPA 101 and NFPA 1.
• The NFPA is made up of fire inspectors, firefighters, and government agencies.
• In 2000, this group created its own building code: - NFPA 5000 Building Construction and Safety Code. - NFPA 5000 did not gain general acceptance and has had minimal impact. However, some elements of NFPA 5000 have been pulled into NFPA 101: Life Safety Code.

Occupational Safety and Health

Administration (OSHA)

• OSHA regulates areas not generally open to the public, such as warehouses, manufacturing facilities, and wastewater treatment plants.
• OSHA is overseen by the U.S. Department of Labor.
• The section that includes railing requirements is 1910.29: Fall Protection Systems and Falling Object Protection – Criteria and Practices (updated in January 2017).

Handrail and Stair Rail Systems

• If a stair has a minimum of four risers, a handrail is required.
• Handrails must be between 30 and 38 inches as measured from the leading edge of the stair tread.
• Stair rail system:
  • Top rail may also serve as handrail if height of the system is between 36 and 38 inches.
  • Before January 17, 2017: not less than 30 inches above the nosing.
  • After January 17, 2017: not less than 42 inches above the nosing.

Handrail and Stair Rail Systems

• The minimum clearance between handrails and other objects is 2.25 inches.
• Handrails have the shape and dimension necessary to grasp firmly.
• Ends of handrails and systems do not present any projection hazards.
• Load requirement: withstand a 200-pound load applied in a downward or outward direction within 2 inches of the top edge of the top rail.

• The dimensions noted were for tube sizes, while the railing industry generally used pipe for railing.
• Tube is designated by outside diameter such that a 1¼-inch round tube has an actual diameter of 1¼ inches.
• Pipe uses a nominal inside diameter. 1¼-inch pipe has an actual outside diameter of 1. inches. 1½-inch pipe has an actual outside diameter of 1.90 inches.

Pipe vs. Tube

Accessible and Usable

Buildings and Facilities

• The council of American Building officials was contacted.
• The error was admitted and acknowledged that 1¼- to 1½ -inch pipe size was acceptable for handrails.
• Correction was published in the 1990 update.

Americans with Disabilities

Accessibility Guidelines (ADAAG)

• The guidelines were published in 1991, revised in 1994, and updated in 2004, and they were used in determining compliance with the ADA.
• The guidelines were originally based on the 1986 ANSI A publication which had incorrect dimensions for the handrail.
• The Access Board was contacted and acknowledged the error, noting that pipe size was acceptable although refusing to put the clarification in writing.
• Clarification of acceptability of “pipe sizes” (1.66 and 1.90 inches) was finally published in 1994 and updated in 2004, including: - 1¼ to 2 inches outside diameter, and - 1½-inch minimum between wall and handrail.
• The “new” ADA was finally approved on July 23, 2010, which was the 20-year anniversary of the original ADA.

2010 ADA Standards for

Accessible Design (ADASAD)

• ADAAG was replaced with the Americans with Disabilities Act Standards for Accessible Design (ADASAD).
• ADASAD went into effect on March 15, 2011. - Compliance was permitted as of September 15, 2010 but not required until March 15, 2012.
• ADASAD are minimum standards, and therefore some states can be more stringent. - Florida and Texas updated their standards to match up with federal standards.