Category BOSTON FURNITURE

BATHROOM PLANNING GUIDELINE 11 Water Temperature Safety

Recommended

• See below.

Code Requirement

Shower and tub/shower control valves must be one of the following:

• Pressure balanced

• Thermostatic mixing

• Combination pressure balance/thermostatic mixing valve types

• (IRC P2708.3)

• (IRC M1507.4)

• The valve must have a high limit stop to prevent water temperatures above 120°F (49°C).

• (IRC P2708.3)

• Hot water delivered to bathtubs and whirlpool bathtubs shall be limited to a temperature of not more than 120°F (49°C).

• (IRC P 2713.3)

• Hot water delivered to bidets shall be limited to no more than 110°F (43°C).

• (IRC P2721.2)

Access Standard

Recommended

• Bathroom Guideline code requirement meets Access Standard.

• (607.8, 608.8)

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BATHROOM PLANNiNG GUiDELiNE 8 Counter

Code requirements

• State or local codes may apply.

access Standard

Recommended

• Bathroom Guideline recommendation meets Access Standard.

BATHROOM PLANNiNG GUiDELiNE 9 Shower Size

Recommended

The interior shower size is at least 36 inches by 36 inches (914 mm by 914 mm).

Code requirement

• The minimum interior shower size is 30 inches by 30 inches (762 mm by 762 mm) or 900 square inches (22,860 square mm), in which a disc of 30 inches (762 mm) in diameter must fit.

• (IRC P2708.1)

access Standard

Recommended

• Plan either a transfer or a roll-in shower.

• Roll-in shower entries: For a 60-inch (1524 mm) deep shower, a 32- inch (813 mm) wide entry is adequate. For a 42-inch (1067 mm) deep shower, the entry must be at least 36 inches (914 mm) wide to allow for turning space.

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BATHROOM PLANNING GUIDELINE 7 Lavatory/Vanity height

Recommended

• The height for a lavatory varies between 32 inches and 43 inches (813 mm and 1092 mm) to fit the user.

Code Requirement

• State or local codes may apply.

Access Standard

Recommended

• Lavatory controls should be within the user’s reach and operable with minimal effort.

ICC A117.1-2009 Reference

• The front of the lavatory sink should be no more than 34 inches (864 mm) above the floor, measured to the higher of the fixture or counter surface.

• (606.3)

• Lavatory controls should be operable with one hand and not require tight grasping, pinching, or twisting of the wrist.

• (309.4)

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Bathroom planning guideline 6 Double Lavatory Placement

Recommended

• The distance between the centerlines of two lavatories should be at least 36 inches (914 mm). The minimum distance between the edges of two freestanding or wall-hung lavatories is 4 inches (102 mm).

Code Requirement

• The minimum distance between the centerlines of two lavatories should be at least 30 inches (762 mm).

• (IRC P2705)

Access Standard

Recommended

• Bathroom Guideline recommendation meets Access Standard.

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BATHROOM PLANNiNG GUiDELiNE 5 single Lavatory Placement

Recommended

• The distance from the centerline of the lavatory to the side wall/tall obstacle should be at least 20 inches (508 mm).

• The minimum distance between a wall and the edge of a freestanding or wall-hung lavatory is 4 inches (102 mm).

Code Requirement

• The minimum distance from the centerline of the lavatory to a wall is 15 inches (381 mm).

• (IRC P2705)

Access Standard

ICC A117.1-2009 Reference

• To assure a clear floor space (30 inches by 48 inches) (762 mm by 1219 mm) the lavatory must be a minimum 24 inches (610 mm) from the wall.

• (A117.1, 1004.11.3)

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Bathroom PLANNiNG GUiDELiNE 4 Clear Space

Recommended

• Plan a clear floor space of at least 30 inches (762 mm) from the front edge of all fixtures (e. g., lavatory, toilet, bidet, tub, and shower) to any opposite bath fixture, wall, or obstacle.

Code Requirement [4]

• A minimum space of at least 24 inches (610 mm) must be planned in front of a shower entry. • (IRC R307.1)

Access Standard

Recommended

• Plan a minimum clear floor space of 30 inches by 48 inches (762 mm by 1219 mm) centered at each fixture, plus space for maneuvering including approach and turning for a person using a wheelchair.

• Plan a knee space at the lavatory or workspace to allow for a front approach for a seated user...

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BATHROOM PLANNiNG GUiDELiNE 3 Ceiling Height

Recommended

• See Code Requirement.

Code Requirement

• Bathrooms shall have a minimum floor to ceiling height of 80 inches (2032 mm) over the fixture and at the front clearance area for fixtures.

• (IRC 305.1)

• A shower or tub equipped with a showerhead shall have a minimum floor to ceiling height of 80 inches (2032 mm) above a minimum area 30 inches by 30 inches (762 mm by 762 mm) at the showerhead.

• (IRC 305.1)

access Standard

Recommended

• Bathroom Guideline code requirement meets Access Standard.

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BATHROOM PLANNING GUIDELINE 2 Door interference

recommended

• See Code Reference.

Code requirement

• No entry or fixture doors should interfere with one another and/or the safe use of the fixtures or cabinets. (IRC P2705.1)

access Standard

recommended

• The door area should include clear floor space for maneuvering which varies according to the type of door and the direction of approach.

ICC A117.1-2009 Reference

• For a standard hinged door, the minimum clearance on the pull side of the door should be the width of the door plus 18 inches by 60 inches (457 mm by 1524 mm).

• (404.2.3)

• The minimum clearance on the push side of the door should be the width of the door plus 12 inches by 48 inches (305 mm by 1219 mm).

• (404.2.3)

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Bathroom Planning Guidelines with Access Standards

The National Kitchen & Bath Association developed the Bathroom Planning Guidelines with Access Standards to provide designers with good planning practices that consider the needs of a range of users.

The code references for the Bathroom Planning Guidelines are based on the analysis of the 2012 International Residential Code (IRC) and the International Plumbing Code.

The code references for the Access Standards are based on ICC A117.1-2009 Accessible and Us­able Buildings and Facilities.

Be sure to check local, state, and national laws that apply to your design and follow those legal requirements.

BATHROOM PLANNiNG GUiDELiNE 1 Door/Entry

Recommended

• The clear opening of a doorway should be at least 32 inches" (813 mm). This would require a minimum 2 feet, 10 inches (864 mm) door.

• If ...

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Evaluating the Design

Lily’s and Chen’s bathroom appears to be a good solution to their objectives and priorities. The spacious shower and generous clearances around the toilet meet the Bathroom Planning Access Standards, and will be desirable in the event of future mobility problems. A window will bring in natural light. A generous amount of storage is provided. The closet can be accessed without inter­fering with someone using the bathroom fixtures.

However, the positioning of the vanity might be problematic. While the vanity is open for possible seated access or use, the 34-inch (864 mm) clearance between the vanity counter and shower wall might be limiting. Turning the vanity 90 degrees and placing it on the shower wall would provide better access with a mobility aid...

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