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Lesson 4: Restrooms, toilet compartments and kitchens

2012 Texas Accessibility Standards, Chapter 6 · 14 practice questions

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Restrooms are a place where the requirements are precise and easy to miss by a small margin. This lesson covers TAS Chapter 6, Section 604, water closet and toilet compartments, a section built almost entirely from exact dimensions.

Water closet centerline location

Section 604.2 sets the water closet's centerline distance from the side wall or partition at 16 inches minimum to 18 inches maximum for a standard accessible compartment. An ambulatory accessible compartment, built for someone who walks but needs support rather than a wheelchair turning space, uses a slightly different range, 17 inches minimum to 19 inches maximum. Getting this backwards, using the standard range in an ambulatory stall or vice versa, is exactly the kind of small, precise error this section is designed to catch.

Grab bars: side wall

Section 604.5.1 requires the side-wall grab bar to be 42 inches long minimum, mounted no more than 12 inches from the rear wall, and extending 54 inches minimum from the rear wall. That 54-inch figure is measured from the rear wall outward, so the bar has to reach well past the front edge of the water closet itself to give a wheelchair user something to pull against while transferring.

Grab bars: rear wall

Section 604.5.2 requires the rear-wall grab bar to be 36 inches long minimum, positioned so it extends at least 12 inches from the water closet's centerline on one side and at least 24 inches on the other. The two sides are not symmetric on purpose. The longer 24-inch side gives more bar length on the transfer side.

Toilet compartment dimensions

Section 604.8.1.1 sets the wheelchair-accessible compartment at 60 inches wide minimum, with a depth of 56 inches minimum for a wall-hung water closet or 59 inches minimum for a floor-mounted one. For compartments built for children's use, the depth is 59 inches minimum whether the fixture is wall-hung or floor-mounted. Section 604.8.2.1 covers the ambulatory accessible compartment instead, 60 inches deep minimum, with a width between 35 and 37 inches, a narrower stall built around a side-wall grab bar on both sides (Section 604.8.2.3) rather than wheelchair turning space.

How this connects to the turning space in lesson 3

A wheelchair-accessible toilet compartment's dimensions are not arbitrary. They exist to fit the wheelchair turning space from Section 304.3 covered in lesson 3 alongside the fixture itself, plus room to transfer onto it. A RAS checking a restroom plan is really checking whether the compartment, the fixture location, and the grab bars all fit together as one working system, not four separate numbers in isolation.

Kitchens and kitchenettes, briefly

TAS Section 804, in Chapter 8, sets accessibility requirements for kitchens and kitchenettes where a facility includes one. In a pass-through kitchen, where counters, appliances, or cabinets are on two opposing sides or opposite a parallel wall, the clearance between opposing base cabinets, counter tops, appliances, or walls within the work area is 40 inches minimum, and a pass-through kitchen must have two entries (Section 804.2.1). In a U-shaped kitchen enclosed on three contiguous sides, that clearance is 60 inches minimum (Section 804.2.2). Spaces that do not provide a cooktop or conventional range are excepted from these clearances (Section 804.2).

Wheelchair-accessible toilet compartment layout Plan view of a 60 inch wide by 59 inch deep compartment with a floor-mounted water closet whose centerline is 16 to 18 inches from the side wall. A side-wall grab bar at least 42 inches long starts no more than 12 inches from the rear wall and extends at least 54 inches from it. A rear-wall grab bar at least 36 inches long extends at least 12 inches from the centerline on one side and 24 inches on the other. A wall-hung water closet allows a 56 inch minimum depth. WC 1 2 16-18 in. 60 in. wide min. 59 in. deep min. Compartment, floor-mounted WC (604.8.1.1) 60 in. wide min. by 59 in. deep min.; 56 in. deep min. with a wall-hung WC 1 Side wall grab bar (604.5.1) 42 in. long min., starting 12 in. max. from the rear wall and extending 54 in. min. from the rear wall 2 Rear wall grab bar (604.5.2) 36 in. long min., extending from the centerline 12 in. min. on the side-wall side and 24 in. min. on the open side Centerline 16 to 18 in. from the side wall (604.2)
The wheelchair-accessible compartment's dimensions, fixture centerline, and grab bar placement work together as one system under Section 604.

Practice questions

1. What is the water closet centerline distance from the side wall in a standard accessible compartment?

  1. Exactly 24 inches from the side wall in every compartment
  2. 12 inches minimum to 14 inches maximum from the side wall or partition
  3. 20 inches minimum to 22 inches maximum from the side wall or partition
  4. 16 inches minimum to 18 inches maximum

2. What is the centerline range for an ambulatory accessible compartment instead?

  1. 16 to 18 inches, the same as standard
  2. 17 inches minimum to 19 inches maximum
  3. 10 to 12 inches
  4. There is no separate range for ambulatory compartments

3. How long must the side-wall grab bar be at minimum, under Section 604.5.1?

  1. 60 inches minimum
  2. 18 inches minimum
  3. 42 inches minimum
  4. 24 inches minimum

4. How far must the side-wall grab bar extend from the rear wall?

  1. 36 inches minimum
  2. 54 inches minimum
  3. 12 inches minimum
  4. 18 inches minimum

5. How long must the rear-wall grab bar be, under Section 604.5.2?

  1. 60 inches minimum
  2. 24 inches minimum
  3. 36 inches minimum
  4. 42 inches minimum

6. How does the rear-wall grab bar's extension from the water closet centerline split between the two sides?

  1. Evenly, 18 inches on each side
  2. 36 inches on one side, none required on the other
  3. It does not need to extend past the centerline at all
  4. 12 inches minimum on one side, 24 inches minimum on the other

7. What is the minimum width of a wheelchair-accessible toilet compartment under Section 604.8.1.1?

  1. 36 inches
  2. 72 inches
  3. 48 inches
  4. 60 inches

8. How does the required depth of a wheelchair-accessible toilet compartment differ between wall-hung and floor-mounted water closets under Section 604.8.1.1?

  1. There is no difference; both require 56 inches minimum
  2. Wall-hung requires 59 inches minimum and floor-mounted requires 56 inches minimum, measured from the rear wall
  3. Wall-hung requires 56 inches minimum and floor-mounted requires 59 inches minimum
  4. Wall-hung requires 48 inches minimum and floor-mounted requires 60 inches minimum

9. What are the width and depth requirements for an ambulatory accessible compartment under Section 604.8.2.1?

  1. 35 to 37 inches wide, 60 inches deep minimum
  2. 60 inches wide minimum, 56 inches deep minimum
  3. 36 inches wide and 48 inches deep, with grab bars on one side only
  4. 48 inches wide and 48 inches deep, with a rear-wall grab bar only

10. How does the wheelchair turning space from Section 304.3 relate to the toilet compartment dimensions in this lesson?

  1. Turning space only applies to ambulatory compartments
  2. The compartment's dimensions have to fit the turning space alongside the fixture and transfer room, functioning as one system
  3. They are unrelated; turning space only applies to hallways
  4. Turning space replaces the need for grab bars

11. What is the minimum clearance between opposing base cabinets, counter tops, appliances, or walls in the work area of a pass-through kitchen under Section 804.2.1?

  1. 40 inches minimum
  2. 36 inches minimum, or 32 inches in existing kitchens
  3. 48 inches minimum
  4. 60 inches minimum

12. A RAS finds a toilet compartment's water closet centerline at 20 inches from the side wall in a standard accessible stall. Is this compliant?

  1. Compliance cannot be determined from centerline distance alone
  2. Yes, any distance over 16 inches is compliant
  3. No, the standard compartment caps the centerline at 18 inches maximum, so 20 inches exceeds it
  4. Yes, because it exceeds the ambulatory range too

13. What section governs handrails on ramps, referenced back from lesson 3?

  1. Section 403.3, the accessible route slope section
  2. Section 604.5, the water closet grab bar section
  3. Section 304.3, the wheelchair turning space section
  4. Section 505, referenced by Section 405.8

14. Why can a restroom fail plan review or inspection over a small dimensional error?

  1. Section 604 sets exact inch minimums and maximums, so a small miss is a deficiency
  2. Restroom requirements are advisory, and reviewers may reject a layout for any reason
  3. RAS reports are required to cite a restroom deficiency on every project
  4. Restroom requirements are optional and are rarely enforced against small errors

Glossary

Water closet centerline
The measured distance from the fixture's center to the side wall (Section 604.2); differs between standard and ambulatory compartments.
Ambulatory accessible compartment
A narrower stall built around two-sided grab bars for someone who walks but needs support, rather than wheelchair turning space.
Side-wall grab bar
42 inches long minimum, extending 54 inches from the rear wall (Section 604.5.1).
Rear-wall grab bar
36 inches long minimum, extending asymmetrically from the centerline (Section 604.5.2).
Pass-through kitchen
A kitchen with counters, appliances, or cabinets on two opposing sides or opposite a parallel wall; it needs 40 inches minimum clearance in the work area and two entries (Section 804.2.1).
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