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Why can't a slab be 100% airtight and watertight ?
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<p>[QUOTE="imrich, post: 1793662, member: 22331"]I believe you stated plastic: "IS NOT USED IN THE CONSTRUCTION OF A PRESSURE VESSEL"! I beg to differ!</p><p> </p><p>I believe a common application which a layman can relate to the use of plastics in the construction of a pressure vessel, is an automotive radiator. You will find that the radiator in an automobile of many vehicles have plastic sides designed to resist 2 atmospheres pressure at elevated temperatures in excess of 120 degrees C. (248 degrees F.) These components use a labyrinthical crimped seal to achieve pressure vessel capability.</p><p> </p><p>Many of the General Motors products utilized this design. I would be pleased to send you a photo of a failed Fiero GT radiator that exceeded design temperatures, being replaced by an all metal custom designed/constructed Aluminum unit.</p><p> </p><p>Just my learned experience![/QUOTE]</p><p><br /></p>
[QUOTE="imrich, post: 1793662, member: 22331"]I believe you stated plastic: "IS NOT USED IN THE CONSTRUCTION OF A PRESSURE VESSEL"! I beg to differ! I believe a common application which a layman can relate to the use of plastics in the construction of a pressure vessel, is an automotive radiator. You will find that the radiator in an automobile of many vehicles have plastic sides designed to resist 2 atmospheres pressure at elevated temperatures in excess of 120 degrees C. (248 degrees F.) These components use a labyrinthical crimped seal to achieve pressure vessel capability. Many of the General Motors products utilized this design. I would be pleased to send you a photo of a failed Fiero GT radiator that exceeded design temperatures, being replaced by an all metal custom designed/constructed Aluminum unit. Just my learned experience![/QUOTE]
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Why can't a slab be 100% airtight and watertight ?
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