I spent a decade of my career in the design engineering sphere. I loved my experiences there, and working in design has given me an understanding of how structures and their various elements are dreamed, designed, and constructed- how they ought to work as well as what can go wrong. Design is fun and can be complicated, and it does not need to be a big scary mystery. Let’s have a peek behind the curtain! (more…)
Construction defect investigations rarely fit neatly into a single engineering discipline. A water intrusion issue may involve the building envelope, roofing, windows, structural components, or mechanical systems. A failure that appears structural may have its origins in design, installation, materials, or an adjacent building system. And when plumbing, HVAC, electrical, or equipment issues enter the picture, understanding the interaction between systems can be critical to determining what happened and why. (more…)
I love spending time at the beach. Just this last weekend I drove by four fellows on extension ladders trimming palm trees with chainsaws on the side of the street.
Image of a worker performing ad hoc tree work without appropriate safety considerations. Of particular concern, his ladder is at an acute angle that puts undue strain on the frame and the worker has no secondary restraints to prevent him from falling off the ladder. Ladder falls are the most common injuries in the arboricultural industry.
Of course, anyone who knows me knows that one thing I like almost as much as the beach is talking about ANSI, OSHA and (more…)
An 8-year-old girl was playing at a playground with her family. The playground was about a year old and very popular. While on the monkey bars about 7 feet up in the air, the child lost her grip and fell to the surrounding loose-fill material engineered wood fiber surface below. She hit her head and sustained (more…)
According to the CDC, nearly 70% of all playground injuries are caused by falls to the ground. This makes the choice and maintenance of surfacing materials one of the most important factors in preventing playground injuries. All playground surfacing material has a Critical Fall Height (CFH) that determines how much impact it can safely absorb. The Critical Fall Height is the safety threshold for playground surfacing and must always be equal to or greater than the surrounding playground equipment’s actual fall height to be considered safe. For example, (more…)
Grilling outdoor during warmer months is a great way to bring people together, so long as users remember they are literally playing with fire.
Spring weather is wonderful in the south. It’s been a year since I moved and got rid of most of the things we never used in the garage. Now I’m perseverating over which grill to buy so my fiancé and I can finally make grilled turkey legs and stir-fry vegetables while watching the neighbor kids play tag between houses. Despite my pale bald head that sunburns almost instantly, I feel the need for some fresh evening air. Very little makes the afternoon better than sitting in a metal chair and joking about the neighbor’s gazebo plans while you casually take food off the grill.
I have to be honest – I sort of fear the back yard. There are gnats, neighbors with all manner of projectiles (frisbees, basketballs, volleyballs and even footballs have flown past me when all the neighborhood kids are running around!), and all the dust that my edger kicks up. But the social energy of such an active development is why I moved there. It seems a waste to eat dinner on nights like these. After all, a backyard barbecue is the highlight of summer.
But managing fire is one of the most dangerous things you can do in flip-flops. (more…)
Slip and falls occur when there is an unexpected loss of traction between a person’s foot and the walking surface, causing them to lose balance and fall. This type of injury is common and can occur in any setting where people walk, including homes, workplaces, and public areas. Slips can result in serious injuries, particularly for older adults.
The human gait cycle consists of four phases: the (more…)
As an experienced safety consultant, I am often called upon to investigate a wide range of premises liability incidents. One common type of incident that frequently results in serious injury is a fall on a painted walking surface.
The ASTM International Standard Practice for Safe Walking Surfaces, ASTM F1637, is a nationally recognized consensus standard that has existed for more than 30 years. It provides guidance to property owners and designers in the construction and maintenance of safe walking surfaces. The standard specifically addresses painted walking surfaces in Section 5.1.3.
ASTM F1637-21 states:
5.1.3 Walkway surfaces shall be slip resistant under expected environmental conditions and use. Painted walkways shall contain an abrasive additive, cross-cut grooving, texturing, or other appropriate means to render the surface slip resistant where wet conditions may be foreseeable.
In previous articles, I have discussed (more…)
Stairs that contain three or fewer risers are considered short flight stairs according to safety standard ASTM F1637-21: Standard Practice for Safe Walking Surfaces. Single step transitions are also considered a short flight stair. Short fight stairs can be particularly hazardous for pedestrians due to the lack of visual cues signifying an elevation change. Unexpected changes in elevations can cause pedestrians to misstep and fall. (more…)
Selecting the best or most effective way to reduce or eliminate risk from a particular machine hazard is an extremely important process. It can mean the difference between someone going home and hugging their wife and children…to never going home again. The hazard control hierarchy (see figure below) is an available tool that illustrates what is known to be most effective to least effective when it comes to eliminating machine hazards or reducing the risk from those hazards to an acceptable level. Removing the hazard by designing it out is by far most effective. (more…)
Not sure what you're looking for?
Browse All
