DCOF[1] - CTIOA[2] Pendulum Test

The most widely accepted slip resistance test for pedestrian safety in the world

We commissioned one of the foremost, independent, slip-resistance testing firms globally to complete independent DCOF[1] - CTIOA[2] pendulum testing on the most popular composite decking materials, treated wood (raw & painted/stained), and our Ergodock systems. Their findings astonished even us.

The results are not on a linear scale; a score of 40 does not indicate a surface is twice as slip resistant as another that received a score of 20. The CTIOA[2] recommends a minimum pendulum test value of 36 for both dry and wet surfaces. In most cases an increase of 0.10 reduces the risk of slipping by factor of 4,319.

The BRE[3] developed a semilogarithmic scale, which determines the probability, or risk, of a person slipping while in motion. Very similar results were established by accredited third party testing through the ANSI[4] A137.1 (Acu Test) standard.

Passing slip resistance tests that all others fail

We’re proud of the drastically enhanced safety that only our dock surfaces provide, and are excited to prove it.

Below we’ve outlined independent test data and provided quick, understandable videos demonstrating and highlighting the safety advantages of our Ergodock systems over popular decking materials.

Slip Resistance

Static Friction

SCOF - Slip Resistance While Standing on a Surface:

  • Static Friction is the only testing that most all other decking manufacturers utilize and publish
  • All static friction tests have been determined obsolete and invalid for testing pedestrian safety
  • Conducted to demonstrate a 'real world' comparison to wood and composite decking since this is the only test results other decking manufacturers provide


Slip Resistance

Dynamic Friction

DCOF - Slip Resitance While in Motion or 'Sliding Friction' on a Surface:

  • Patent pending non-slip surface
  • Reduces the risk of slipping by up to 1,000,000x (one million times) as compared to walking on composite or wood decking when wet.
  • While we misted other decking surfaces in the video, you'll notice we completely saturated the Ergodock surface with water to demonstrate its incredible slip resistance. 

Shock Absorbent

Impact Attenuation

  • Nearly 20 x (twenty times) the shock resistance, or ‘cushioning,’ other dock surfaces 
  • Wood and composite decking results show that they have nearly the same shock resistance as a concrete floor. Ouch!
  • Calculated based on the impact differences between the first and second bounces


  • Immediately eliminates the potential for moisture-related deterioration
  • Liquids do not pool on surface
  • Automatically diverts liquid to the outside edges.
  • Our 'embedded, closed-cell membrane' keeps the existing decking material completely moisture free.
  • Significantly safer surface for activity on the dock when it's wet out


  • Never remove or replace weak deck boards or joists again
  • Nearly doubles the structural strength of existing dock materials
  • Bonds to existing surface to provide a monolithically structural dock surface.
  • In the video, even after reaching the maximum load, the ErgodockTM SS sample stays intact- never shattering or creating sharp protrusions.

Outdated and misleading testing

A vast majority - potentially all - of wood and composite decking manufacturers substantiate and market their decking materials with obsolete or misleading data when it comes to slip resistance. They do this by citing the ASTM[5] C-1028-07 testing as their standard and as evidence their products meet ADA, CTIOA[2] and OSHA requirements.

Unfortunately for them, the ASTM[5] and CTIOA[2] withdrew the ASTM[5] C-1028-07 test in 2014, as it was "determined not to be a valid test for assessing pedestrian safety". The results were based on the SCOF or slip resistance “while standing still.” Additionally, most all other ASTM[5] tests used by these manufacturers are specific to indoor environments.

As you may know, most slip injuries do not occur while standing motionless or hanging out on indoor docks. That’s why we only utilize ANSI[4] - A1371 (Acu Test) and the DCOF[1] - CTIOA[2] pendulum tests for our products. They are for slip resistance when a person is in motion (walking/running/rotating) and require much higher “passing” values. This is why they are the most widely accepted and utilized tests globally. Currently we are unaware of any composite decking or wood decking manufacturer that utilize these required tests or that publish the resulting data to the public. Why? After reviewing the test results above, the answer becomes increasingly obvious.

DCOF [1] - Dynamic Coefficient of Friction
CTIOA [2] - Ceramic Tile Institute of America
BRE [3] - Building Research Establishment
ANSI [4] - American National Standards Institute
ASTM [5] - American Society for Testing and Materials

Super Summer Sales Event

Purchase your ErgoDock™ GS, PS, SS, MP or AR system during our Super Summer Sale Event and we will automatically give you a 20% discount off the total purchase price of your ErgoDock™ system. Order soon and don't miss out on the savings!