Author Archives: Victor

Stairway Visibility Through Contrasting Colored Step Nosing

By Jared @ Floormatstore.com

The other day, a friend called me up to discuss safety codes in regards to stairs. He was moving his son out of his apartment and carrying the sofa down the stairs. The rubber stair treads were in terrible shape, cracked, worn through and just in general need of replacement, which of course presents a safety issue on its own. The larger issue he had called about though, was stairway visibility. The stair treads had grit stripping in the nosing – which is a sandpaper-like tape, used for extra traction and visual awareness – on all but a few of the steps, one of which was the last step before a landing. Walking down the stairs backwards, carrying one end of the sofa, the bottom step – missing the strip – blended in with the landing below it, giving the false impression that he had reached the landing. As you could guess, stepping back, thinking that he had reached the landing, caused a bit of a stumble. I’m sure we have all experienced that moment of terror, where your heart jumps up an inch, your stomach is sucked up into your chest and your breath stops for a split second that feels like minutes. Luckily for him, he caught himself before fully falling down and walked away without injury. His story made for a great discussion on the topic of contrasting color for visual awareness.

One of the highest causes for accidents on stairways is poor visibility of both risers and treads. Poor visibility can cause people to misread the edge of a step, causing them to fall. One of the best and most cost effective ways to increase visibility is by providing a visual contrast on the leading edge of treads. According to the U.S. Access Board Research, safety yellow is the most ‘visually detectible’ color.

FloorMat-Store.com GSA9 Aluminum Stair Treads displaying a black tread with contrasting safety yellow leading edge

FloorMat-Store.com GSA9 Aluminum Stair Treads displaying a black tread with contrasting safety yellow leading edge

Whether or not the contrasting stripes are a requirement is a debated topic across the country. Because stairs are not part of an accessible route, ‘ANSI A117.1 Section 504 Stairways’ does not technically apply to the IBC. The misconception comes from the commentary for subsection 1102.1 Design. Visual contrast is not referenced into the IBC, so it only applies if the authority having jurisdiction has specifically incorporated the requirement into their set of codes. For example, all of California does require them. Also, according to ADASAD Advisory 504.4 Tread Surface, the contrasting color is not required, but strongly suggested. If you are unsure of the requirements in your area, check with your local building inspector.

 

Acoustic Wall Panels Control Machine Shop Noise

By Victor @ A-Mezz

wall system

Solid relocatable acoustic wall panels to control compressor noise

In this photo an Ohio bearing repair shop needed a separation between a machining operation and an assembly area. The customer wanted a portable rigid wall system that could provide flexibility and be relocated as the shop layout was most likely going to change to accommodate a new piece and an expansion to their services and equipment. The shop area was conditioned and space was already tight, so they needed to keep everything as open as possible. Windows were added for visual safety.  You may wonder “Why use a rigid panel and not an industrial curtain?” We offered both options and, as it turned out, the minimal cost savings of a vinyl curtain system did not negate the additional benefits of solid acoustic wall panels. Five months later the area was rearranged and these panels are being used in the new location of the customer’s shop.

acoustical partition system

Wall panels to separate machine shop and control noise

The back wall in the photo to the right shows a view of this acoustical partition system that surrounds two rather noisy compressors. This area enclosing the air compressors does include a ceiling system with sound control insulation. All the windows are laminated tempered safety glass. Laminated glass provides superior acoustic benefits over standard tempered safety glass.

When the partition curtain wall was later relocated, the panels comprising the compressor room remained in their original location.

This is only one example of several modular wall systems this customer has in this facility. Three other modular enclosures serve as clean rooms and process control rooms, and two others are being used as production control and shop supervisors’ offices.