![]() ![]() ![]() Palmer's blocks were 8 in (20.3 cm) by 10 in (25.4 cm) by 30 in (76.2 cm), and they were so heavy they had to be lifted into place with a small crane. After 10 years of experimenting, Palmer patented the design in 1900. The first hollow concrete block was designed in 1890 by Harmon S. It was not until 1824 that the English stonemason Joseph Aspdin developed portland cement, which became one of the key components of modern concrete. Much of the concrete technology developed by the Romans was lost after the fall of the Roman Empire in the fifth century. During the reign of the Roman emperor Caligula, in 37-41 a.d., small blocks of precast concrete were used as a construction material in the region around present-day Naples, Italy. to bind shaped stones together in the construction of buildings. In use, concrete blocks are stacked one at a time and held together with fresh concrete mortar to form the desired length and height of the wall.Ĭoncrete mortar was used by the Romans as early as 200 b.c. Most concrete blocks have one or more hollow cavities, and their sides may be cast smooth or with a design. The term precast refers to the fact that the blocks are formed and hardened before they are brought to the job site. A concrete block is one of several precast concrete products used in construction. It is sometimes called a concrete masonry unit (CMU). parking on concrete driveway should not be a problem.mine is right in front of my house.A concrete block is primarily used as a building material in the construction of walls. I try to take my rig out at least once a week to exercise it. I usually only leave the RV parked 3-4 weeks, as we have been, and plan to, take it camping about once a month.Ĭould I park it on rectangular paver stones, which I am thinking of putting where my wheels go? And would this do the same thing or would I still need to put it on plastic or wood, (that was the other option I was told about).īig difference between more than a "few days" to months at a time. As recommended, once I have the RV positioned, I place plastic levelers, pull forward, put the levelers in place and back up onto the plastic levelers. We park our RV beside our house, currently just in the grass. Specifically, that it's not good to leave the tires sitting on dirt, grass, asphalt or concrete for weeks or months at a time. I was told that when you park for more than a couple days, you ought to put something under the tires. Equipment parked outside on grass seems to rust sooner and faster and not everything under a coach is undercoated. Michelin says to inflate to sidewall pressure while stored and I’m guessing it is to help with the weight on the tire.Īside from the tire question, parking on grass, may want to consider how much, if any, additional moisture will collect on the underside. Don’t think this is an issues if you drive it once every 2 or 3 months (my idea again). Seems if you used the lift jacks to take most of the weight off, that would be a good compromise, but that’s just my idea. Have always heard that any vehicle in long term storage should be lifted and placed on blocks to take the weight off the tires. I would think good clean concrete pavers would be okay, but if in doubt a piece of clean plywood can’t hurt. Safe bet is to place a barrier between the tire and surface. My two bits worth of understanding is that you want to avoid surfaces that may contain oils or chemicals that could affect the tires.
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