![]() Fastener req’ts and corrosion cause/isolation req’ts shall be selected for service life longevity.Insect immune – example worst case Formosan termite infestation. Anti-mold & fungal growth inhibitors such as MicroBan ® or BioBlock ® shall be incorporated.Resist weathering – solar: UV and ozone, thermal -40 to +130F. Resistant to standard automotive fluids including JP-8 and similar diesels, MoGas, motor oil, trans, brake and hydraulic fluid, gear lube, battery acid and caustics. ![]() Equal or greater mechanical properties vs Apitong/Keruing.Ref Drawing 12624740 M871A3 Semitrailer Floor Boards. Inherent stiffness shall not allow sag (deflection) under load of more than 1/4“ between crossmembers. for contact patch 7,500 lb / 200 in sq.) on 24” spaced crossmembers (3” top flange) without permanent deformation. Sustained load-bearing of payload (5400 lb/ft2 est.An estimated lifecycle cost of $15K to $25K per trailer (in today's dollars $5K each in material and labor to re-deck every 8 to 10 years, leading to a life-cycle potential cost-avoidance for all trailers of >$400 million). Apitong has a field service life of only 8 years due to its susceptibility to rot and insect attack, requiring replacement up to 5 times over a 40 year lifecycle, resulting in wasteful utilization of a foreign endangered resource, downtime in addition to ‘random’ board replacement as damage occurs in addition to soldier labor time and incidentals such as corrosion repair and spot painting. Apitong is the only known endangered species actively harvested from nature for DoD use. Worldwide, approximately 16,500 DoD military trailers (in both production & sustainment) are decked nearly exclusively in $65M of Apitong, which is an increasingly rare and critically endangered East-Asian tropical rainforest hardwood (i.e. Decking is an often overlooked integrated structural element of Tactical Trailers. ![]() Problem to be solved is the frequent and costly redecking of Army heavy trailers. decking) for Army Heavy Trailers, as well as any trailer that uses wood planking for deck-boards.ĭESCRIPTION: Currently, Army heavy trailers primarily use the critically endangered rain-forest wood apitong. Might also help if I don't do the drive through car washes.I can probably keep more moisture off the deck by doing a manual wash.OBJECTIVE: A robust physical configuration and manufacturing source for engineered synthetic floor boards (aka. Plus plain treated plywood won't be so dang slick as the painted plywood I have now. I know it sounds like a lot of work just to deck my sled deck, but I think it would make it last alot longer. This way every edge and surface that is exposed to the elements is treated and very little of the raw plywood edges are exposed for moisture to wick in and warp. What I would do with regular AC ply would be to make all my cuts and holes in the plywood first, joint the edges with like 1" strips solid lumber (like fir or redwood) and then take it to the local pole plant and get each piece treated. I've thought about the plastic Trex material used for house decks, marine grade plywood, and another option using regular AC plywood. What has everybody found to be the best material to put on open trailer decks and sled decks? It is coated with some sort of paint that is holding up pretty good, but edges of the ply soak up the moisture way too easily and are starting to split apart. After a couple years of wear and tear on my sled deck, the cheap plywood is starting to split and warp at the edges.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |