|Typical 4-point suspension|
ANSI type I protection
There is no joy in scraping your skull along the bottom of a low-lying air duct, sprinkler pipe, or cross-bracing steel. The pain is excruciating, and dripping blood from the catwalk is poor manners.
A few years ago, well actually ALOT of years ago, helmet manufacturers realized that adding a layer of crushable foam (typically styrofoam) to the inside of a helmet would increase the energy dissipation significantly. We first saw this technology applied to motorcycle and auto racing helmets, and then to bicycle helmets. It eventually made its way into rock climbing helmets, and from there into the world of construction helmets.
|KASK Super Plasma Helmet interior view - ANSI type II protection.|
Note the two layers of padding: both Styrofoam and a fabric covered foam cushion.
|Conventional hard hat with 4-point chin strap|
|Single chin strap accessory|
|KASK Super Plasma - ANSI type II protection|
Myth: Rock climbing helmets aren't OSHA compliant. Any helmet that meets the ANSI/ISEA Z89.1-2009 or 2014 standard is acceptable. It may not look like Bubba's typical construction site hard-hat, but if it meets the standard and is labelled as such, then it's legal.
So, what can yo do to keep a cool head and be stylin' on truss? Get one of those really protective and 'I'm a professional' looking ANSI type II helmets and wear it! The two most popular climbing helmets are the Petzl Verex Best and the KASK Super Plasma. Bright colors are recommended. If you need to black it out for a show (common for truss follow spotlight operators), just have your costume department sew-up a black spandex cover for it.
Bottom line: Unless your want your brains to become Zombie food, protect them. No replacement parts are currently available.