The higher the SD the better. The gravel actually works much better than concrete of the same thickness and it is a LOT less expensive. Thank you for the info. The flashpoint of the oil is also typically tested. turns out that 6 inches is all it takes… :-). Thanks Steve. The stock 1.50-inch intakes and 1.31 exhausts weren't so bad with 215 inches of displacement; but they can';t fee big bores and strokes. I’ve seen their after math of an. Ford Raptor Towing Capacity by Generation, First Ride: 2021 Can-Am Maverick X3 Max X RS Turbo RR With Smart-Shox, Kenda Karrier Loadstar Radial Trailer Tire Review. This practice is very important on extremely cold mornings. Neither will FMG 55 grain, nor hollow point. Don’t forget, there are 1000’s of those rifles in private hands in this country along with millions of rounds of API to feed it. The privacy screens also stop handgun bullets. You also mention velocity, velocity x mass equals energy. Bullet proofing walls and the design thereof. There is a building code for this. This wall should be on a spread footing. Standard concrete from the plant is 3,000-3,500 psi, but you can request higher values, 5,000psi would be a great improvement for a modest price increase. ( many of these shooting were also empty-the-magazine and drop before you run/drive away.). Alternatively, many systems of ICF – insulated concrete form type walls have a default thickness of 8″ of concrete plus a system to add rebar. You can get it in 4×8 sheets and it is pricy($100+ range). More Than 50 Years After Its Birth, the Mother of All Hemis Is Still Around and Kicking Ass. Saw folks carrying in boomboxes. Geffrey the US military still uses a type of rammed earth construction, they are called collapsible Hesco barriers. Be sure your gutter system can handle the weight, or else limit the water level to an inch or two. There are even camo sand bags, if you’re setting up a ‘play area’ outside. Plywood, 4 1/2 in, 9mm, 40cal, 45acp, standard ammo, 10yds, penetrated just 1 side, no damage to other side. Been sewing my own as needed, I use that heavy woven black weed mat, it lasts wayyyy longer and does not degrade in the sun. If you feel the need for EMP protection, then choose one room in the house. I live in big fire country, the wild fire guys tell me soffits and eaves are where the fires start. 9mm, .40 and .45acp are trying to get over 450 foot pounds with +p ammo. It's very colorful, attractive. The steel plate will deflect the EMP, concrete will not unless you build in a Farraday cage, maybe. What about the windows or is this just for a safe room? Also regarding 3.5″ thickness and a sustained fire event, this thin wall cross section will experience degradation much sooner than thicker sections of concrete. These are then tilted up upon a slab foundation and tied together with steel corners and butts…then spanned and held by engineered steel trusses..which can be designed as wished. Even a .44 magnum handgun is trying to approach 900 foot pounds of energy from a blunt projectile. I have samples of this product ready to construct boards for my own testing, so I’ll know more soon, but the videos were very impressive. They do not advertise that it will stop most hand gun rounds, but it does. Bullet proof your home by creating planters outside, which allow one to pile stone and sand up to at least the height of your window sills. First time I’ve heard that idea. A turbo timer will do this automatically for you, because if it gets shut off too soon, oil will overheat, break down, and destroy turbo bearings. (actually, we’re talking about bullet resistance), “Based on these tests, it is my professional recommendation, when practical, that we utilize the combination of Oriented Strand Board (OSB) and concrete. otherwise, methinks it is “compost”.. maybe we can all run up to Dennis on his mountain..grin. Our walkout basement is cinderblock construction, concrete filled w/ rebar. the cage will work just fine. The magic is that the gravel saps the energy from the round by moving around a little as the bullet tries to travel through the wall. “I think I will try to join Dennis on his mountain…I bring rolls of clean toilet paper”.. Had to laugh when part of the building was downgraded. The privacy screens are made of wood, they go to the ground and his wife painted bucolic scenes on them. This has long been known to char over and resist fire. Seems like it would be cheaper to just tear my house down and rebuild it, lol. I am also sure that there are some calibers that would penetrate even these options. Therefore, each 4×8 section when filled with concrete will have a downward force weight of approximately 1,300 pounds. Bullets are interesting creatures. There are a number of ways to stop a projectile. This makes it more permanent, but I own the property and have the flexibility to do this. per gallon and there are 7.5 gallons per cubic foot, so water weighs 60 lbs per cubic foot, or 40% of that of concrete. I know there are gaps above the books on each shelf so something can still get through. I know these are not optimal solutions but it is better than nothing. These are then tilted up upon a slab foundation and tied together with steel corners and butts…then spanned and held by engineered steel trusses..which can be designed as wished. I have been told it is a slow leak from the intake gasket. 3.5″ and 8 feet tall is a VERY narrow cavity to pour concrete into. At the time of the recommendation, the labor costs were estimated to be similar to the materials cost itself. You’re right, I too have seen some amazing designs.. Actually there are several references in the comments above regarding alternatives. 2×6 steel studs with 3/4″ crushed gravel between Plus i can make them big, made some that i pick up with the forks on my tractor, stacking them for retaining some dirt. Solar storms can be worse. It received excellent and informative discussion which I suggest you read down in the comments below. Recently I noticed that coolant is leaking. As for us the house is hardened with fiberglass ballistic panel and has stone work as the external finish main floor. And it is not costing that much money. had this idea, which I think would only work for a new construction type thing.. One local retiree of Southern CA law enforcement went with asian inspired architecture and built up several “privacy screens” blocking direct view of his house, windows and front door from the street. Time will tell, but for the price it won't break the bank if it doesn't last. Sutro designs and manufactures products that make loving your pool (or spa) again simple, safe, and seamless. Typically, concrete has a density of 150 pounds per cubic foot. Unless protected being off does not protect certain circuitry from being fused. it is very pricey, $300 for 5 gallons, which only covers half as much as regular paint, plus two coats are needed. We tested many of these in military and ran many simulations. You have plenty of money and want to build a house that is resistant to earthquakes, bombs, and an F-5 tornado? Than just back fill and spray paint the yellow bags black or green that show. Then apparently left in place afterwards as an integral part of the wall. One issue is that the entire cylinder just lifts right off of the base and would spill the all candy in a second. (a double stud wall w/ 2 rows of 3.5″ or 4″ metal studs would be even better )Be sure when filling the wall with concrete you have a long piece of rod or rebar to use to push down the concrete to make certain there are no remaining voids or air pockets in your wall. Of course your own cost of materials may vary. 3. The electric lines have to be in conduit. Look up the Pensmore Mansion/Chateau/Castle in the Missouri Ozarks. I have seen the tests. You can strategically place boulders or flagstones on end as barriers for cars. Usually a good driver can self tap through up to 16 gauge, but often 18 gauge is a working limit for faster productivity, but I would not feel bad if you could only use 20ga studs. as an urban home owner, I see no “easy” way to bullet proof aesthetically. 8″ of 5,000 psi concrete with rebar is pretty good wall for non “AP” small arms protection. your faraday emp man conning you. 308, 165 grain FMG, 25yds, will penetrate the first block, but will not penetrate the 2nd block. I spent 20 years in the concrete business and the information above is accurate. I live Louisville Kentucky and it gets kind of crazy around here these young kids seems like all of them want to be gangsters I have already had a pistol to my face twice in my own front yard I’m a veteran so I’m not allowed to carry firearms but I have negated that fact Ernie might seem silly and I don’t know how you feel about decorum but me personally I’ve just been hanging street signs in a single room in my trailer and big heavy pieces of aluminum that I’ve gathered from Power amplifiers I’ve seen what bullets do to aluminum street signs and for some reason they tend to ricochet very seldom do I ever see one that goes through strangely enough as it may seem I don’t know if that’ll do any help but it sure has brought me a little bit of comfort. Although I agree with the architect, that would be for new construction. The calibers were selected based on press coverage of incidents around the nation, as weapons-calibers commonly used in attacks on citizens. a waterproofing concrete floor paint if possible. We apologize for this inconvenience and encourage you to visit. Inconsistent metal expansion and poor-flowing (thick) lubricants don’t provide protection from moving parts. The AR-15 penetrated most combinations of 3/4″ plywood and steel plate combinations we tried. BUT bricks have very different mechanical strength. No one wants them so they are free. Here’s What You Need To Know about the Hemi, in all its form and function. I think that a high strength concrete is the best. As for hardening with steel. Various aggregate (gravel) sizes are used in concrete mix design and a 3.5″ wall cavity could have a very high probability of voids in the wall. Weak spots are windows and walk-out framed wall. The earthbags or cob construction would be excellent, kinda cool designs can be made too…. This means that a block of concrete that is one foot wide, one foot long, and one foot high would weigh 150 pounds. Just some thoughts. Rifles are just too common to design for less. I remember watching a Mythbusters episode where various calibre munitions were fired into a swimming pool and was intrigued by the results. Always remember small arms are just one of a myriad bag of tools an aggressor will use to neutralize or eject… Read more ». outside the trailer, one could build up a new exterior wall with 8″ hollow concrete block, with the hollow cores filled with high strength grout. Any stones destroyed are replaced by gravity. use the heaviest gauge your budget will allow and your tools can drive a self tapping screw. That would still take care of the majority of the falling embers. Keep this wall at least 1.5″ out from the trailer siding to prevent moisture from being trapped and rotting out the trailer walls.top the wall with a “c” channel to keep moisture out, especially if you live where it freezes; water freezing in the wall is s sure way for cracks to form. The best solution that I have conceived so far is to move several of our bookcases to the outer walls. I don’t claim to be an expert on ammunition and due to lack of this knowledge I have had my first experience with bad ammunition, but I would like to tell this in hope that it might help someone like me. that wall design does not give me feelings of safe happy security. It hits the cage and follows the metal around to ground. This particular recommendation was made to the city of Boulder following a series of bullet penetration tests conducted by the city facility manager there. Installed 3/4″ fire treated plywood and caulked again. I’ll have to sit with that some more. The intercooler is totally blocked as well. A 6″ gravel filled wall will NOT “stop a .50 BMG”. All you have to do for the moment is crack the rings loose a thousandth of an inch to allow the penetrating oil to get in between the rings and cylinder walls. I live in a mobile home in a remote area (off grid), but feel the need to provide some bullet resistance, as typical M. H. construction provides none. Im thinking that using concrete is a really bad ideal fir Denver. Retrofitting is always going to be the expensive option and usually not a satisfactory one. It is more expensive – although you won’t need 1-1/8″ (OSB) – while 3/4″ (plywood) should suffice. It would be far more durable than any other type of poured-in-place concrete. If you’re filling the entire wall, then you’re looking at about 320-lbs per linear foot. 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