Built Environment Accessibility Flashcards

What is the minimum clear width required for an accessible doorway under ADA Standards?

Answer: 32 inches (81 cm)

ADA Standards require a minimum 32-inch clear width when the door is open 90 degrees.

What is a tactile ground surface indicator (TGSI) and where is it commonly installed?

Answer: Textured ground surfaces that provide navigational and hazard warning cues to people with vision impairments through touch underfoot or with a cane

TGSIs are raised patterns on ground surfaces detectable by foot or cane, guiding visually impaired pedestrians.

What does the concept of 'visitability' mean in residential housing design?

Answer: A design approach ensuring homes have at least one zero-step entrance, wide doorways, and an accessible bathroom on the main floor

Visitability advocates for basic accessibility features in all new homes: step-free entrance, 32-36 inch doorways on the main floor, and a usable bathroom on the main level.

What is a hearing loop system in a built environment?

Answer: An electromagnetic induction system that transmits audio directly to hearing aids with telecoils, reducing background noise

A hearing loop transmits audio via electromagnetic field to compatible hearing aids and cochlear implants, providing clear audio without background noise.

What is the maximum running slope permitted for an ADA-compliant ramp?

Answer: 1:12 (8.33%)

ADA Standards specify a maximum running slope of 1:12 with landings at the top and bottom and every 30 feet of run.

Why are accessible wayfinding systems important in public buildings?

Answer: They enable people with disabilities to independently navigate buildings through tactile signage, high-contrast visual cues, and multiple information formats

Accessible wayfinding systems use multi-sensory cues to help all visitors independently navigate complex built environments.