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<blockquote data-quote="keep_hope_alive" data-source="post: 7874566" data-attributes="member: 576029"><p>Thanks for the feedback. OSB will be used for the forms, a box within a box will be built. Making the face is the next challenge in my plan right now, the front may be a separate piece. I can put fasteners in the box pour.</p><p></p><p>Concrete is being used for mass, rigidity, and strength, as well as transmission loss. May only end up with 1.5" of concrete if we use 3/4" OSB. OSB is being used for obvious reasons (if you are familiar with concrete forms).</p><p></p><p>It appears the suspension upgrades includes upgraded leaf springs and frame work. It is a truck frame, which helps.</p><p></p><p>Through CAD I will be able to determine the cu. ft. of concrete in the design and thus the weight.</p><p></p><p>I am considering just making the back, inside, and front with concrete and let the top, bottom, and outside be reinforced wood to keep weight more centered and lower. We'll see.</p><p></p><p>Safety is a huge concern. A reinforced floor and roof will be required, welding is inevitable and not a hindrance. I have to determine forces and sheer strength of fasteners as well. I will be consulting with some of the structural engineers in my firm to verify my calcs. I will be approaching this with a very conservative mindset. No sacrifices will be made in relation to safety. I don't want to build something that will move in an accident.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 7874566, member: 576029"] Thanks for the feedback. OSB will be used for the forms, a box within a box will be built. Making the face is the next challenge in my plan right now, the front may be a separate piece. I can put fasteners in the box pour. Concrete is being used for mass, rigidity, and strength, as well as transmission loss. May only end up with 1.5" of concrete if we use 3/4" OSB. OSB is being used for obvious reasons (if you are familiar with concrete forms). It appears the suspension upgrades includes upgraded leaf springs and frame work. It is a truck frame, which helps. Through CAD I will be able to determine the cu. ft. of concrete in the design and thus the weight. I am considering just making the back, inside, and front with concrete and let the top, bottom, and outside be reinforced wood to keep weight more centered and lower. We'll see. Safety is a huge concern. A reinforced floor and roof will be required, welding is inevitable and not a hindrance. I have to determine forces and sheer strength of fasteners as well. I will be consulting with some of the structural engineers in my firm to verify my calcs. I will be approaching this with a very conservative mindset. No sacrifices will be made in relation to safety. I don't want to build something that will move in an accident. [/QUOTE]
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