Practitioners.
Not paper-pushers.

Our business

What we do is easy to say and harder to do well. We measure how slippery a floor actually is, fix the floors that fail, and put the whole thing on paper. We work nationwide, some of it ourselves and some through auditors and crews we have vetted, so a company with locations in three states gets the same test method and the same report at every one. None of it is a guess. The instruments are calibrated, and the methods we run are the ones the standards actually name.

How we work

Most floors do not need to be torn out. They need to be measured honestly, then treated only where the readings say so. We handle each step ourselves: the testing, the remediation, the report, and expert testimony if it comes to that. You are not stitching together three vendors and hoping their paperwork agrees.

Who we are

My wife Raluca and I own and run Walkway Management South Florida. I came up through the flooring trade, more than twenty years of it, working alongside tile manufacturers, installers, and the crews who actually lay the product down, before I moved into testing full time. Founding the American Floor Safety Alliance came out of the same frustration: too much of this trade runs on opinion.

Claudius Nan & Raluca Nan

Founders, Walkway Management South Florida

Claudius is the Founder & President of Walkway Management South Florida and the founder of the American Floor Safety Alliance (AFSA). He came up through the flooring trade — 20+ years working alongside tile manufacturers, installers and the crews who lay the product down — before moving into testing full time, and partners with law firms nationwide for expert-witness testimony. His wife Raluca co-founded the company and runs it alongside him.

Tests to · Pendulum

• ASTM E303-22 — Pendulum Slip Tester, wet & dry
• AFSA FS101-25 — AFSA pendulum method, both sliders

Tribometer — DCOF / SCOF

• ANSI A326.3-21 — wet DCOF (BOT-3000E)
• ANSI A137.1 — tile DCOF
• ANSI/NFSI B101.3-2012 — wet DCOF
• ANSI/NFSI B101.1 — SCOF

Specialty surfaces

• AFSA FS201-26 — sustainable slip resistance (accelerated wear)
• ASTM F2772 — sports & athletic flooring
• Pool & spa decks — ISPSC wet PTV & DCOF
• Surface roughness — Ra profiling

Tested with the Pendulum Slip Tester, the BOT-3000E and the ASM-825A surface-roughness meter.

A national practice, not a Florida one

We are a national company. We have tested floors across the country — hotel lobbies in one state, pool decks in another, sports floors, kitchens, hospitals and stadiums — and we travel for the work when a job calls for it. Where it makes more sense to have someone local, we work through a network of affiliate technicians so a company with buildings in three states gets the same methods and the same kind of report at every one.

DR

David Raphael

Walkway Affiliate.

Palm Beach County, FL

Tests to

• ANSI A326.3-21 — wet DCOF
• ANSI A137.1 — DCOF
• ANSI/NFSI B101.3-2012 — DCOF
• SCOF testing standards

Tested with the BOT-3000E.

Kimberly Jansen

Walkway Affiliate.

Tampa, FL

Tests to

• ANSI A326.3-21 — wet DCOF
• ANSI A137.1 — DCOF
• ANSI/NFSI B101.3-2012 — DCOF
• SCOF testing standards

Tested with the BOT-3000E.

Rodderick Schroy

Walkway Affiliate.

Atlanta, GA

Tests to

• ANSI A326.3-21 — wet DCOF
• ANSI A137.1 — DCOF
• ANSI/NFSI B101.3-2012 — DCOF
• SCOF testing standards

Tested with the BOT-3000E.

Brian Vassallo

Walkway Affiliate. Director of Safe Space Ingenuity and co-founder of the American Floor Safety Alliance (AFSA).

New York City, NY

Tests to

• ASTM E303-22 — Pendulum Slip Tester
• AFSA FS101-25 — pendulum, dry & wet, both sliders
• AFSA FS201-26 — sustainable slip resistance (accelerated wear)
• ANSI A326.3-21 — wet DCOF
• ANSI A137.1 — DCOF
• ANSI/NFSI B101.3-2012 — DCOF
• SCOF testing standards

Tested with the Pendulum Slip Tester and the BOT-3000E.

John Sotter

Walkway Affiliate. Founder of Sotter Engineering and co-founder of the American Floor Safety Alliance (AFSA).

Los Angeles, CA

Tests to · Pendulum

• ASTM E303-22 — Pendulum Slip Tester, wet & dry
• AFSA FS101-25 — AFSA pendulum method
• BS EN 16165:2021 — European / Pendulum Slip Tester
• EN 13036-4 — European pendulum
• AS/NZS 4586 & 4663 — Australian/NZ pendulum, new & existing floors
• HB 198:2014 — Australian PTV safety criteria

Tribometer — DCOF / SCOF

• ANSI A326.3 — wet DCOF (BOT-3000E)
• ANSI A137.1-2012 — tile DCOF
• ANSI/NFSI B101.3-2012 — wet DCOF
• ANSI/NFSI B101.1-2009 — SCOF
• ASTM C1028-07 — SCOF (withdrawn; on request)

Specialty surfaces

• NSF/ANSI/CAN 50-2019 — pools & splash pads
• ASTM F2772-11 — sports & athletic flooring
• Sustainable Slip Resistance — before/after simulated wear

Tested with the Pendulum Slip Tester, the BOT-3000E, the Tortus tribometer and the SlipAlert meter. He is also a slip-and-fall expert witness and forensic consultant.

Need testing somewhere not listed here? Tell us where the building is and we will either come to you or point you to the right person.

Credentials that survive cross-examination

• Certified in Pendulum Slip Tester testing by Sotter Engineering
• Certified in BOT-3000E testing by Walkway Management Group
• Certified Walkway Auditor — University of North Texas College of Engineering
• NFSI Walkway Auditor Certificate Holder (WACH)
• One of seven labs in the ASTM F2508-23 study, for the Pendulum Slip Tester
• German Ramp Testing through our partner lab, Consumer Assurance Testing Lab (CATL)
• Reports structured to the ASTM F2048-00 format; investigations composed to ASTM F1694
• Founder of the American Floor Safety Alliance (AFSA)

Who we serve

Over the years we have worked with just about every kind of operation where a floor can put someone down:

Go deeper

If you want the evidence behind the way we work, keep going. The three pages below cover how big the slip-and-fall problem really is, how our reports are built to hold up in a courtroom, and what a fall actually costs a business when it goes to trial.