Section 10 28 13 · Toilet Accessories

For architects and specifiers

Everything you need to write a retractable child step stool into a specification: three-part sections in Word, technical data sheets, CAD and Revit files, and a clearance note you can put straight on the drawing. No form, no account, no waiting on a sales call.

The line you are probably missing. A standard-height lavatory is 865 mm (34 in.) at the rim. A four-year-old cannot reach it. The usual answers are to lower a basin, add a second set of fixtures, or leave a loose stool on the floor in a wet room. A floor-anchored retractable step stool does none of those: the child pulls the tread out with a foot, steps up, and the tread folds back on its own afterwards. It belongs in Section 10 28 13, alongside the accessories you are already scheduling.

The dimensions that govern, and the one the code does not cover

Four figures decide whether a child can wash their hands at a standard lavatory. They are quoted here verbatim from the 2010 ADA Standards for Accessible Design, so you can check them against your own drawing without leaving this page.

ArticleApplies toRequirement, verbatim
606.3The required accessible lavatory (213.3.4) "Lavatories and sinks shall be installed with the front of the higher of the rim or counter surface 34 inches (865 mm) maximum above the finish floor or ground."
606.2
Exception 4
Children 6 through 12 "A knee clearance of 24 inches (610 mm) minimum [...] shall be permitted at lavatories and sinks used primarily by children 6 through 12 years where the rim or counter surface is 31 inches (785 mm) maximum above the finish floor or ground."
606.2
Exception 5
Children 5 and younger "A parallel approach complying with 305 shall be permitted to lavatories and sinks used primarily by children 5 years and younger."
305.3Clear floor space "30 inches (760 mm) minimum by 48 inches (1220 mm) minimum."

What those four figures leave out. Every one of them works by changing the lavatory: lower the rim, deepen the knee clearance, allow a parallel approach. That is the right answer in a dedicated children's washroom, and it is why a day care builds one. It is not available in an airport, a stadium, a museum, a library, a restaurant or a shopping centre, where the same basin has to serve a four-year-old and a six-foot adult. Lowering the rim there stays within 606.3, which sets a maximum and not a minimum, but it leaves every adult stooping, and on a run of basins it trades one group's comfort for another's.

The 2010 ADA Standards do not mention a step stool anywhere. Adding one is a design decision, taken when the fixture cannot move. What the standards do govern is the accessible lavatory the step must not obstruct: a unit does not go at the required accessible lavatory, as the clearance note further down this page explains.

Specification sections

Three-part format (General, Products, Execution), one page, ready to paste into your project manual. Adjust quantities, locations and finishes to suit the project.

Recommended for public tenders

Brand-neutral specification, or equal

Written entirely in performance terms. No manufacturer, brand or trade name appears anywhere in the text, so it can be inserted into a public tender without a brand-name justification and without restricting competition. Article 2.4 sets the performance requirements; any product meeting them is acceptable.

Section 10 28 13

Specification section, Klimbo as basis of design

The same three-part section with Klimbo named as the basis of design, followed by an or-equal article. Use this one when the owner has already selected the product.

Section 10 28 13

Named specification, single model

For a project where one model has been chosen and the schedule is already fixed.

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Product data

From the published technical data sheet for each model. Load capacities are verified by laboratory test. No third party certification is claimed.

Model Load capacity Warranty Anchoring Materials Weight
K01370 kg (815 lb)5 years, mechanism includedConcrete slab, 3 steel masonry anchors suppliedT6061 aluminum, Axalta powder coat9 kg (20 lb)
K02370 kg (815 lb)3 yearsSlab, 4 anchors 3/8 in. x 3 3/4 in., drilling template supplied1018 steel, epoxy primer and Axalta powder coat10 kg (22 lb)
K03410 kg (900 lb)3 yearsNone. Removable and repositionableT6061 aluminum, recycled rubber tread7,25 kg (16 lb)

Standard colour included: RAL 7047 Telegrey. As a priced special order, all three models come in 190 RAL classic colours plus Axalta metallic finishes, with owner branding available. Projection from the counter with the step lowered, K01 and K02: 279 mm (11 in.). Overall height retracted: K01 609.6 mm (24 in.), K02 483 mm (19 in.).

Technical data sheets

CAD, Revit and 3D geometry

Six drawings per format: front, top and side elevation, each with the tread deployed and retracted, so the projection and the anchor footprint can be checked on the drawing rather than on site. Direct download, no form.

These drawings carry the Klimbo geometry without a model number in the file name. Tell us which model your project uses and you get the drawing set confirmed for that model, plus any format not listed here, usually within the week. Ask for a specific model or format.

Clearance note, for the design consultant

Where lavatories are provided, 2010 ADA Standards 213.3.4 requires at least one to comply with 606, and 606.2 requires that lavatory to have a clear floor space for a forward approach and knee and toe clearance complying with 306. A K01 stands 609.6 mm (24 in.) tall retracted and sits under the counter. So do not install a Klimbo unit at the lavatory that serves as the required accessible lavatory: place the units at the other lavatories in the room and leave the accessible one clear.

At those other lavatories, confirm on the drawing, not on site, that the unit and its projection of 279 mm (11 in.) from the counter, step lowered, do not encroach on a required clear floor or manoeuvring space.

No step stool is "ADA compliant." The ADA does not address step stools, and compliance is a property of the installation. These units support lavatories designed per 2010 ADA Standards section 606; they replace no required clearance. See compliance and product data.

Working on a project right now?

Send the number of lavatories and the room type. You get a one-page specification section named for your project, a budget figure, and the anchor detail, usually the same day.

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