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Architectural and Engineering Technical Resource

Touchless Automatic Faucets & Soap Dispensers Technical Drawing Options in Stainless Steel

A dimensional drawing is the primary coordination document connecting a touchless fixture with the lavatory, countertop, plumbing rough-in, electrical supply and maintenance area. For commercial projects, automatic faucets and soap dispensers should be documented as one coordinated handwashing system rather than as separate decorative products.

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FontanaShowers’ architect and specifier resources provide access to specification-ready BIM, CAD and technical submittal information. Available documentation may include Revit families, AutoCAD files, IFC models, technical PDFs, installation guides and product-specific cut sheets, depending on the selected fixture and project request.

These resources help architects, plumbing engineers, BIM coordinators and contractors verify fixture placement, deck penetrations, sensor clearances, power requirements and service access before fabrication or installation begins.

Recommended Technical Drawing Package

A professional AEC submittal should present the fixture clearly from every angle needed for architectural, plumbing and maintenance coordination.

  • Front and side elevations: Confirm overall height, body width, sensor position, spout reach, outlet angle and countertop clearance.
  • Plan and mounting views: Verify base dimensions, drilling locations, edge clearances and faucet-to-dispenser spacing.
  • Below-deck service diagram: Identify valves, control boxes, power supplies, tubing, reservoirs and maintenance access.
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A coordinated reflected countertop plan should identify the centerline of the faucet, soap dispenser and basin, together with the backsplash, mirror line and all required deck penetrations.

The below-deck drawing should show solenoid valves, control modules, electrical connections, power supplies, soap reservoirs, delivery tubing, mixing valves, isolation valves and the clear working space required for future servicing.

This level of documentation is particularly important for multi-user wash stations, where structural supports, sensor fields, water supplies, electrical components and maintenance routes may overlap.

Key Product Dimensions

Every technical drawing should identify the dimensions that directly affect installation, usability and long-term service access.

Overall Fixture Height

Shown in front and side elevations to check mirror, shelf, backsplash and visual clearances.

Spout Reach

Shown in the side elevation to position the water discharge within the basin’s intended wet zone.

Base Diameter

Shown in plan and mounting details to confirm drilling, escutcheon coverage and the sealing surface.

Faucet Sensor Position

Shown in front and side views to establish the user detection zone and reduce reflective interference.

Soap Nozzle Position

Shown in front and side elevations to direct soap into the intended handwashing area.

Fixture Centerlines

Shown in plan view to align the faucet, dispenser, basin and countertop penetrations.

Faucet-to-Dispenser Spacing

Shown in plan view to limit sensor overlap and support an intuitive washing sequence.

Below-Deck Service Depth

Shown in section details to protect space for controls, valves, tubing, wiring and reservoirs.

Dimensional Control Note

The manufacturer-approved cut sheet remains the dimensional authority. Never scale product photographs, renderings or BIM preview images.

Coordination note: Confirm fixture projection, basin geometry, sensing range, deck drilling and maintenance access before countertop fabrication.
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The technical sheet should also identify power requirements, soap routing, service clearances and the relationship between the sensor and nearby reflective surfaces. Early verification can reduce false activation, drilling errors and inaccessible components.

Drawing Scale: Millimetres and Inches

Primary Measurement Format

Use millimetres as the controlled measurement, with inches in brackets where U.S. project teams require both systems.

Dual-Unit Example

Present a controlled dimension as 250 mm (9.84 in).

Exact Conversion

Use the exact relationship: 1 inch = 25.4 millimetres.

Controlled Rounding

Calculate the secondary unit from one approved dimension rather than rounding metric and imperial values separately.

Recommended Drawing Scales

Use 1:5 or 1:10 for elevations, 1:2 for mounting details and 1:20 for lavatory coordination plans.

Printed-Sheet Control

Add “Do Not Scale Drawing—Use Figured Dimensions” and label each value as nominal, minimum, maximum or field verified.

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Dual-unit documentation is most reliable when one measurement system controls the design and the second is treated as a converted reference. This prevents conflicting values between architectural sheets, plumbing documents, fabrication drawings and installation instructions.

Because a PDF may be enlarged, reduced or printed on a different sheet size, each drawing should include a graphical scale bar and a clear instruction to use written dimensions rather than the printed image scale.

Specification and Authority Requirements

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Touchless faucet schedules are generally coordinated with Division 22 plumbing requirements, while soap-dispenser assemblies may also intersect Division 10 accessory specifications.

The project documentation should identify flow rate, operating pressure, power method, sensor range, BIM parameters, installation requirements and maintenance criteria. Fixture selection should also be checked against the applicable plumbing-fitting standard, local codes and project accessibility criteria.

Automatic activation reduces the need for manual contact, but it does not replace verification of accessible reach, basin clearances, approach geometry or component placement.

Technical coordination summary: A complete drawing package converts touchless fixtures into buildable, reviewable and maintainable assemblies. Controlling fixture height, spout reach, mounting dimensions, sensor placement, soap delivery, service zones and dual-unit measurements can reduce RFIs, prevent countertop rework and support a coordinated commercial handwashing system.