1.1 本规范涵盖了使用真空测试方法来证明安装材料和施工程序的完整性时测试预制混凝土人孔部分的程序。本规范用于测试使用砂浆、胶泥或垫片接缝的混凝土人孔部分。 1.2 本实践旨在用作测试，使安装人员能够证明回填后混凝土人孔的状况。其目的是避免人孔过载，压力超过10英寸。汞(33.86千帕)。 1.3 除非按照本标准的要求进行限制，否则本惯例不适用于安装了短管的结构。 1.3.1 特此提醒用户，过载可能导致灾难性故障，严重损坏系统，导致重大修复成本，包括使系统无法使用。1.3.2 这种做法不适用于非圆柱形人孔。 附注1: 本实践中提出的真空测试标准与一般使用的标准相似。该试验和标准已广泛成功地用于检测人孔。 附注2: 建议该实践的用户在真空（空气）和水压试验之间没有发现相关性。 附注3: 如果测试需要全压负载，则为10英寸。Hg（33.86 kPa）应用现场应脱水并进行试运行。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。======意义和用途====== 5.1 这不是常规测试。记录的数值仅适用于被测试的人孔和测试时。 5.2 这使得能够在作为系统的安装状态下对检修孔进行现场测试。 5.3 这使得承包商可以现场测试沙井。

1.1 This practice covers procedures for testing precast concrete manhole sections when using the vacuum test method to demonstrate the integrity of the installed materials and the construction procedures. This practice is used for testing concrete manhole sections utilizing mortar, mastic, or gasketed joints. 1.2 This practice is intended to be used as a test to enable the installer to demonstrate the condition of the concrete manholes post backfill. Its purpose is to avoid overloading the manhole with pressure in excess of 10 in. Hg (33.86 kPa). 1.3 This practice is unsuitable for structures with pipe stubs installed unless restrained per the requirements of this standard. 1.3.1 Users are hereby cautioned that overloading can result in catastrophic failure that can seriously damage the system causing major rehabilitation costs, including rendering the system unusable. 1.3.2 This practice is not suitable for non-cylindrical manholes. Note 1: Vacuum test criteria presented in this practice are similar to those in general use. The test and criteria have been widely and successfully used in testing manholes. Note 2: The user of this practice is advised that no correlation has been found between vacuum (air) and hydrostatic tests. Note 3: If the test requires the full pressure load, 10 in. Hg (33.86 kPa) to be applied the site should be de-watered and the test run. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This is not a routine test. The values recorded are applicable only to the manhole being tested and at the time of testing. 5.2 This permits the ability to field test manholes in the installed state as a system. 5.3 This allows contractors to field test manholes.