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  • Users: reyzers
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  1. reyzers

    Different ways to test concrete in buildings

    Thank you.
  2. reyzers

    Different ways to test concrete in buildings

    We bought a used building and simply want a random check on the concrete quality especially in critical areas like columns and beams. You stated that a core is taken in an area that has little or no structural impact. But the company said core samples are usually taken in middle of beams or...
  3. reyzers

    Different ways to test concrete in buildings

    If you did coring test for instance 3 inches diameter by 6 inches depth sample. What do you usually use to replace the concrete that would ensure there is absolutely no gap in the replacement (100% binding to the concrete socket left)? Did you use tiny formworks over the 3 inches hole and maybe...
  4. reyzers

    metal roof slope and water

    Would you know to what extend air can get into the interstitial voids and capillarity and rust the bars inside? Have you actually seen if rusts form in the bars inside bridges or old decks that didn't have waterproof and how rusty it can get?
  5. reyzers

    Different ways to test concrete in buildings

    Besides the following: 1. Rebound hammer 2. Ultrasonic Pulse Velocity Test 3. Core Sample What are other ways to test for voids inside concrete? Would there be a direct X-ray test?
  6. reyzers

    metal roof slope and water

    what is short in short term? 2 months? 5 months? 1 year? 2 years? Please define your concept of short as things are always relative. How exactly is concrete permeable to water? If you glue a piece of concrete in the middle of a 4" diameter test tube with water on top and seal tight. How long...
  7. reyzers

    metal roof slope and water

    If you have a concrete roofdeck and you didn't waterproof it. How long before rains erode the bars inside slab and beams if there are delays in the waterproof or cover? Would rainwater pass thru the concrete and into the bars and cause rust inside or no oxygen, no rust?
  8. reyzers

    metal roof slope and water

    What's the typical slope for a 6 meter by 6 meter metal roof and 12 meter by 12 meter metal roof? Is the slope double for area that is twice larger? Is there a rule of thumb formula for the size of metal roof, how fast water move down it?

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