It is generally considered to be 6″. You can get thinner but stone size, shape orientation, and reinforcement quickly become predominant issues. In other words, the wall starts behaving more like concrete bellow 6″ in thickness and like a shell structure below 4″ in thickness. Keep in mind when I say they behave in a …
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I think you’re looking for the “modulus of elasticity”.
Yes, but… If you look at most examples you will notice strictly a framework. A few examples will suspend a bridge or solid form using it or them, as a compression strut. So you become limited to structures so big the occupied portions look like the struts or a large mass supported by a couple …
Continue reading “Can buildings be built using Tensegrity, such as skyscrapers?”
Ok. Earth is between 7,899.8 (pole to pole) to 7,926.4 (equator through the center to equator) miles. People comfortably walk at about 3mph. This gets you between 2,633 to 2,642 hours. That would be basically 110 days or just less than 4 months. Of course, this assumes you never stopped walking and kept at the …
Typically we like to limit the weight to about 40 lb/sqft on an unknown 4″ slab. In most cases you can go to 80 lb/sqft in isolated spots, but unless you know roughly what the soil bearing and reinforcing is for that slab you might be looking at cracking. Keep in mind that 40lb/sqft is …
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The process of placing and curing concrete in hot weather is usually called moisture curing. There are two types. One for hot-arid and one for hot-humid environments. Hot-arid environments are the ones you usually need to worry about. Water is poured onto the surface as needed to keep just enough water to reflect for the …
Those are sheet pilings. They are holding the lateral weight of the hillside up against them. They are one solution to preventing the hillside from sliding or collapsing into the newly built area.
There are two ways to look at this: A surface that needs to hold something like a 90,000lb vehicle rolling along. Or. A 90,000lb concentrated load coming down such as a column. For the first scenario, you need something like 8″-12″ thick reinforced concrete. Conditions below the slab generally define the difference. For the second …
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Obsidian is glass and therefore is cut exactly like glass. While there are lots of methods of stress and thermal breaking of thin-walled glass, I get the feeling that everyone is imagining a block or slab of obsidian. You’re not going to like the answer then. For large pieces you have two general choices: grind …
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Most of the time a variable load is a variable distributed load, VDL as opposed to a uniform distributed load, UDL. The variable changes from one rate to another which is either greater or less than the first. This represented as a wedge. Cases were this comes in is where loads are applied at an …
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