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Guide · Specifications and drawings · 06 61 16

Check solid surfacing specifications against countertop details, sink schedules, and wall panel elevations

UFGS Section 06 61 16 Solid Surfacing Fabrications, a USACE-prepared guide specification issued in August 2020 as a complete review and update of the August 2010 edition, covers fabrications in cast 100 percent acrylic solid polymer, acrylic-modified polymer, and quartz agglomerate: countertops with drop-in, undermount, or integral sinks and bowls, one-piece tops, cafeteria counters with hot and cold wells, backsplashes and end splashes, shelving, window stools, tub and shower wall systems, and wall cladding and wainscoting. Its articles set certified fabricators, mock-ups and samples, warranty, material properties in two tables, thickness for horizontal and vertical surfaces, patterns, colors, and surface finish, seam adhesive, sealant, conductive, insulating, and heat reflective tape, mounting hardware, joints, edges, and installation. Its system description places structural support, cabinet support, and clearances with other trades, and it sends toilet partitions to Section 10 21 13.

Start with the Work bracket in the System Description of the issued Section 06 61 16: confirm that it lists every solid surfacing item the drawings show, countertops, sinks or bowls, window stools, shelving, shower walls, and wainscoting, and that each has details giving its dimensions, edge profile, splash, seams, and support. Then check that the material and thickness kept suit each use, that the sink and bowl paragraphs match the plumbing fixture schedule, that hot and cold cutouts are detailed, and that the support, blocking, and clearances the section leaves to other trades are on the drawings.

Assemble the review package

Gather the floor plans and interior elevations with every countertop, vanity, window stool, shelf, shower surround, and wainscot, the casework and countertop details with edge profiles, splashes, seams, overhangs, and support, the plumbing fixture schedule and plans with sinks, lavatories, faucets, and their mounting type, the food service plans with hot and cold wells and the equipment templates, the shower and toilet room enlarged plans with the panel layout, trim, and accessories, the wall types and blocking details behind wall-hung tops, shelves, and panels, the finish schedule or Section 09 06 00 with solid surfacing colors, patterns, and finish, the accessibility plans with counter heights and knee clearances, and the issued Section 06 61 16 with the casework section or 06 20 00, Section 22 00 00 or the plumbing fixture section, Section 10 21 13, and the food service equipment section. Follow one countertop with a sink from support to sealant before assuming the others match.

WBDG publishes UFGS 06 61 16: Solid Surfacing Fabrications as a public guide-specification reference (accessed November 12, 2026). Use your project’s issued specification and amendments for the actual comparison; the guide specification does not automatically govern your project. The checklist below is an original suggested review workflow, not a reproduction of the UFGS requirements.

Eight checks to run against the issued set

Use one record per location or system. The CSV contains the same eight prompts plus fields for source revisions, observed evidence, the review owner, the decision, and closure references.

Eight specification-to-drawing checksSwipe or scroll sideways to read all columns.
CheckSources to compareQuestion to resolve
Which items are solid surfacing, and in which materialSystem Description note (uses; 100 percent acrylic, acrylic-modified, and quartz agglomerate only; veneered products excluded) and Work bracket (items in a blank) + Solid Surfacing Material + 100 percent acrylic note (preferred unless cost or color governs) + Quartz Agglomerate bracket + finish schedule, elevations, and casework detailsDoes the Work blank list every solid surfacing item the drawings show, and only those, is each item assigned to one material, acrylic, acrylic-modified, or quartz, on the finish schedule or the details, and is any veneered top on a plywood or particleboard substrate drawn in the set specified elsewhere, since the note excludes it from this section?
Thickness, properties, and quartz requirementsPART 2 thickness note (standard thicknesses; quartz minimum, stated twice) + Solid Surfacing Material (minimum thickness; horizontal and vertical brackets; thickness as indicated) + the two property tables (tensile strength marked as a maximum; metric and inch-pound tensile and thermal expansion values that disagree; flexural strength in inch-pound only) + Quartz Agglomerate (no property table) + countertop and panel detailsDo the details give a thickness for each horizontal and vertical item that matches the bracket kept, where quartz is used, is its thicker minimum written into the article rather than left in the note, has the specifier set the tensile requirement as a minimum and made the metric and inch-pound values agree, and since the section gives quartz no property table, which test values will its submittal be judged against?
Countertops, splashes, edges, and seamsCounter Tops (thickness bracket that encloses the backsplash options; details, dimensions, locations, and quantities on the drawings; seam reinforcement; full-size sample) + Counter Top Splashes (permanently attached or loose) and End Splashes (loose) + Permanently Attached Backsplash note and bracket (square or coved) + Edge Finishing (edge shapes as detailed) + Joints and Seams + elevations and countertop detailsDo the countertop details show the edge profile, backsplash height and transition, end splashes, and seam locations for each top, is the splash choice in the Counter Tops paragraph the same as in the Counter Top Splashes paragraph, are end splashes drawn loose or attached, since one paragraph allows attached end splashes and the other requires them loose, and are seams located away from sink cutouts and over support?
Sinks, bowls, and the plumbing fixture scheduleCounter Tops with Sinks and with Bowls notes (rimless recommended) and brackets (stainless steel or vitreous china to template; solid polymer sinks or bowls; one-piece tops) + Solid Polymer Sinks and Bowls brackets (CSA B45.5/IAPMO Z124; same polymer as the top; undermount or flush; configuration and dimensions) + Mounting Hardware + Installation (silicone for metal and china; seam adhesive for solid polymer) + Plumbing + plumbing fixture scheduleDoes each sink and lavatory on the plumbing fixture schedule match the bracket kept for that top, stainless, vitreous china, or solid polymer, with the same mounting type, undermount, flush, or drop-in, are the bowl sizes and configurations on the schedule the ones the solid polymer paragraphs fill in, and where one-piece tops are kept, do the drawn top lengths and bowl spacing fit a manufacturer’s standard unit, as the note warns?
Heat, cold, and food service cutoutsConductive Tape + Insulating Tape note (commercial food wells only) and article + Heat Reflective Tape + Cafeteria Counter Tops (cutouts to equipment templates; insulation; hot and cold separation; expansion joints; ventilation of cabinets below) + NSF/ANSI 51 rows of the property tables + food service plans and equipment scheduleDo the food service plans locate every hot and cold well and give the equipment template, are hot and cold wells separated on the counter layout as the cafeteria paragraph requires, are the expansion joints and the ventilation of the cabinets below drawn, and is the food-contact approval the property tables require confirmed for the material and color selected?
Shower walls, wall cladding, and toilet partitionsTub/Shower Wall Panel System note and article (components; panel thickness; seams only at inside corners) + Wall Cladding/Wainscoting (heights indicated; no horizontal seams) + Wall Panels and Panel Systems (“a specified panel adhesive”; silicone at inside corners and expansion joints) + Silicone Sealant installation + Toilet Partition System note and article (Section 10 21 13) + shower plans, wall types, and wainscot elevationsDo the shower and wainscot elevations show the panel heights, seams, trim, soap dishes, and shelves the brackets list, is the substrate behind the panels drawn as one the manufacturer accepts, since the installation paragraph calls for a panel adhesive the section never specifies, and where solid surfacing toilet partitions are drawn, are they specified only in Section 10 21 13, which carries its own solid polymer material article, rather than in both sections?
Support, blocking, and coordination with other tradesSystem Description items b and c (structural support, cabinet support, and clearances by other trades to the manufacturer’s recommendations; size and opening variation) + Shelving (wall support brackets bracket) + Window Stools note and bracket + Installation (plumb, level, rigid) + casework section + wall types and blocking details + accessibility plansDo the casework and wall details show the support spacing, corbels, brackets, and blocking the manufacturer will require for each overhang, wall-hung top, shelf, and window stool, since the section leaves that support to other trades, does the casework section provide the top support the solid surfacing needs, and do the counter heights and knee clearances on the accessibility plans survive the top thickness and support depth drawn?
Color, finish, samples, mock-up, and qualificationsPatterns and Colors note and bracket (Section 09 06 00 or as indicated; veining through the thickness) + Surface Finish note and bracket (matte, semigloss, polished) + Qualifications (manufacturer-certified fabricator) + Mock-ups note (describes a counter top sample “as described here”) and paragraph + Counter Tops sample + material sample + Sealant (clear formulation) and Loose Counter Top Splashes (color-matched silicone) + Warranty + finish scheduleDoes the finish schedule or Section 09 06 00 give a color, pattern, and finish for every solid surfacing item, with mitered edges where veined patterns are drawn, has the specifier kept either the full-size mock-up or the counter top sample, since the note says one replaces the other while the section keeps both, and is the sealant clear or color-matched, since the sealant article and the splash installation paragraph disagree?

Worked example: a clinic countertop with a mismatched sink, loose end splashes, and shower panels with no adhesive

Illustrative example: a medical clinic renovation keeps Section 06 61 16 for exam room countertops with integral sinks, staff toilet vanities, and shower surrounds in two patient toilet rooms. The plumbing fixture schedule lists undermount stainless steel sinks in the exam rooms, while the issued section keeps the solid polymer sink bracket. The countertop details show a coved backsplash with attached end splashes, while the issued section keeps attached backsplashes and the paragraph that requires end splashes loose. The finish schedule names a veined quartz pattern with a stacked edge, the details show the thinner horizontal thickness, and the shower panel details show the panels over cement board with no adhesive named. No support brackets are drawn under the vanity overhangs.

Ask the architect and plumbing engineer to settle on one sink type and mounting for the exam rooms and to make the fixture schedule, details, and section agree, to state whether end splashes are attached or loose, to draw a mitered edge and the quartz thickness where the veined pattern is kept, and to add vanity support brackets and blocking. Ask the specifier to write the quartz minimum thickness and test values into the article, to name the panel adhesive and confirm the cement board substrate with the manufacturer, and to keep either the mock-up or the counter top sample.

Avoid a false conflict

Section 06 61 16 covers solid polymer and quartz agglomerate fabrications. The cabinets and casework that support the tops follow the casework section or Section 06 20 00 and the wood casework and finish carpentry guides, sinks, faucets, and plumbing follow Section 22 00 00 or the plumbing fixture section and the plumbing fixture guide, toilet partitions follow Section 10 21 13 and the toilet compartment guide, tile shower walls follow the ceramic tile section, food service equipment follows its own section, and colors may follow Section 09 06 00, so check those before calling a requirement missing. Some of the section’s own wording needs resolving: its property tables mark tensile strength as a maximum and give metric and inch-pound values that disagree, quartz has no property table and its minimum thickness is only in a note, its mock-up note describes a sample the paragraph does not, its countertop thickness bracket encloses the backsplash options, its splash paragraphs disagree on whether end splashes are loose, its sealant article and splash installation disagree on clear or color-matched sealant, and its wall panel installation requires a panel adhesive it never specifies. Ask the specifier which wording the project intends before treating a difference as a design conflict.

When requirements disagree, follow the project’s document-control and clarification process. Do not assume that drawings always override specifications, or the reverse. Identify the exact sources and request an authorized decision.

Close the issue across the affected documents

Record the location or tag, drawing and specification references, issue dates, observed difference, and the decision needed. Assign an owner and keep the item open until the response identifies the governing requirement. Check the revised drawings and specification references together; a response email alone may leave the issued package inconsistent.

For the overall process, use the guide to drawing and specification conflicts. Mark an inapplicable checklist row with a reason, and distinguish a verified correction from a question that still needs design information.

Where Groundbook fits

Groundbook’s drawing and specification review helps investigate potential disagreements in the documents you supply. Include the relevant specification sections and drawing references, then verify the cited evidence with the responsible reviewers before acting on a finding.

Questions, answered

FAQs

What should a solid surfacing specification review compare?

Compare which items are solid surfacing and in which material, thickness, properties, and quartz requirements, countertops, splashes, edges, and seams, sinks, bowls, and the plumbing fixture schedule, heat, cold, and food service cutouts, shower walls, wall cladding, and toilet partitions, support, blocking, and coordination with other trades, and color, finish, samples, mock-up, and qualifications.

What must the drawings show under UFGS 06 61 16?

The current UFGS 06 61 16 Solid Surfacing Fabrications on WBDG asks for countertop details, dimensions, locations, and quantities on the drawings, edge shapes as detailed, splashes, shelving, window stools, wall cladding, and shower components as indicated, and the structural support, cabinet support, and clearances that other trades provide. UFGS numbers are DoD guide specification numbers, not universal MasterFormat titles, and your project’s issued specification governs.

How is this different from the wood casework guide?

The wood casework guide follows UFGS 06 41 16.00 10 and compares the cabinet package, its grade, laminate, countertop material choice, and accessible clearances. This guide follows UFGS 06 61 16, which covers the solid surfacing itself: material and thickness, seams, splashes, integral or mounted sinks and bowls, hot and cold cutouts, shower walls, wainscoting, and the support the tops need from the casework and walls.

Can Groundbook check solid surfacing drawings against Section 06 61 16?

Groundbook compares the drawing set with the reference documents you upload, such as your issued Section 06 61 16, the casework and plumbing sections, the fixture and food service schedules, and licensed standards you hold, and links each potential disagreement to both sources. It has no built-in code library and does not select materials, calculate support or overhang spacing, evaluate test reports, certify compliance, or approve samples. Each finding is a question for the architect, the specifier, or the plumbing or food service designer.

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