Presentation on theme: "Accessibility. A building code is a set of rules that specify the minimum acceptable level of safety for buildings. The main purpose of building codes."— Presentation transcript:
A building code is a set of rules that specify the minimum acceptable level of safety for buildings. The main purpose of building codes are to protect public health, safety and general welfare as they relate to the construction and occupancy of buildings and structures. A building built to the building code is the least safe building you can legally build.
ADAAG Authority to use ADAAG ◦ Design Standards ◦ Clarifications Tolerances Construction Details
Authority ◦ HECO Manual 7A.1 Americans with Disabilities Act Accessibility Guidelines (ADAAG), published July 23, 2004 and excluding the Architectural Barriers Act [ABA] Scoping Requirements. Standards of VUSBC Chapter 11 and the IPC §405 do not apply to University facilities on Commonwealth property. ◦ Facilities Design Guidelines GR.2.1 ADAAG is applicable to Commonwealth of Virginia new and renovated construction projects.
HECO Manual 7A.2.1 ◦ Americans with Disabilities Act Accessibility Guidelines, July 23, 2004. ◦ Available on-line http://www.access-board.gov/ada-aba/index.htm ◦ Clarifications for University Owned Buildings
◦ Accessible facilities must be provided at the completion of construction. ◦ Adaptable facilities do not meet the requirements for accessibility unless demonstrated to the University Building Official to be readily implemented on demand. ◦ All stairways shall be accessible to the disabled.
Facilities shall be designed so that accessibility does not stand out or draw attention to it when other architectural alternatives are available. ◦ Example, restroom lavatories shall be of uniform design with all lavatories meeting accessibility standards rather than just one unit meeting the standards. ◦ This would not apply to toilet stalls, urinals or water closets.
Teaching and research laboratories shall have a minimum of five percent, but not less than one, work station for each type of facility (fume hood, bench, sink, etc.). Compliance may be achieved using readily adjustable modular casework and equipment.
ADAAG has some minimum and maximum dimensions for some of the elements. If a minimum and maximum is given, there is no tolerance for the element being outside of that range. (ADAAG Advisory 104.1.1) If a minimum or maximum is given there is some tolerance, but the tolerance is not defined. ◦ Element should be dimensioned to ensure the minimum or maximum is not exceeded. Don’t show the limit.
Openings in floor or ground surfaces shall not allow passage of a sphere more than ½ inch diameter. Elongated openings shall be placed so that the long dimension is perpendicular to the dominant direction of travel. 302 - Floor and ground surfaces
Walking surface on accessible route ◦ Cannot be steeper than 1:20 Ramp ◦ Slope cannot exceed 1:12 ◦ Ramps require handrails if the ramp rise is greater than 6” Grades steeper than 1:12 are not accessible
Tread and riser dimensions are no different that what is required in the VUSBC. Open risers are not permitted.
Height of handrails is measured to the top of the gripping surface. 34 inches minimum and 38 inches maximum above the walking surfaces, stair nosings and ramp surfaces. Handrails shall be continuous from the top to the bottom of the stair flight.
Extend beyond and in the same direction of the stair flight or ramp run. 505.10 Ramp handrails shall extend horizontally above the landing for 12 inches minimum beyond the top and bottom of ramp runs. 505.10.1
The difference between the Building Code and ADAAG is that ADAAG says the extensions shall continue in the direction of the stair flight or ramp run. Handrail Extensions
The 2009 International Building Code has changed the wording concerning handrail extensions for exit ramps and exit stairs to be in line with ADAAG. Handrail Extensions
At the top of a stair flight, handrails shall extend horizontally above the landing for 12 inches minimum beginning directly above the first riser nosing. 505.10.2 At the bottom of a stair flight, handrails shall extend at the slope of the stair flight for a horizontal distance at least equal to one tread width beyond the last riser nosing. 505.10.3
ADAAG Figure 505.10.2 Handrail extension at top of steps
Turning space is required. Mirrors. Bottom of the reflective surface no more than 40 inches above the floor. Coat hooks within reach ranges. Shelves - 40 inches minimum and 48 inches maximum above the finish floor.
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