ASTM C1244 PDF

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ASTM C() Standard Test Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum) Test Prior to Backfill Paperback – April 1. ASTM A/AMa Testing Mechanical Splices for Steel Reinforcing Bars .. ASTM C Concrete Sewer Manholes by the Negative Air Pressure. This standard is issued under the fixed designation C; the 1 This test method is under the jurisdiction of ASTM Committee C13 on.

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Looking at the second paragraph on Page 3.

Already Subscribed to this document. Proceed to Checkout Continue Shopping. For more information on precast concrete manholes, please contact NPCA at or visit www. You may delete a document from your Alert Profile at any time.

Vacuum Testing Precast Concrete Manholes

We have no amendments or corrections for this standard. Please first verify your email before subscribing to alerts. Thank you for the comment Taylor. This test method is used for testing concrete manhole sections utilizing mortar, mastic, or gasketed joints. The test and ast, have been widely and successfully used in testing manholes. Many people do not fully understand the effects of vacuum testing backfilled manhole systems in the presence of ground water. Need more than one copy?

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If ground water is present, use the following information to determine if a reduction in vacuum pressure is warranted:. Remember me for one d1244. This test method is used for testing concrete manhole sections utilizing mortar, mastic, or gasketed joints. Print 1 2 3 4 5 page sstarting from page current page. Add to Alert PDF. Therefore, to be more conservative, it is recommended that you round xstm depth of bury up to the nearest measurement on the table.

Need more than one copy? This standard is also available to be included in Standards Subscriptions. Enter your personal account email address to request a password reset: Today, some 12, ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence.

Internal Pressure at Critical Depth Vacuum pressure. We have no amendments or corrections for this standard.

ASTM-C, –

So in your example, we would round the depth of bury up to 16 feet, meaning we would need the mercury to hold for at least 40 seconds. I hope this explanation helps clarify the procedure a bit. No items in cart. Search book title Enter keywords for book title search.

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Vacuum Testing Precast Concrete Manholes

Nails, Spikes, and Staples. Note 1—Vacuum test criteria presented in this test method are similar to those in general use. The values recorded are applicable only to the manhole being tested and at the time of testing. The test and criteria have been widely and successfully used in testing manholes. If the document is revised or amended, you will be notified by email.

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