How to Explain Ultrasonic Hatch Cover Tightness Test to a Five-Year-Old
How To Prepare
This article goes through and answers questions that property developers have about the whole process and what they can do improve their chance of a pass.
Passing the air tightness test is easy. To pass you simply need to have filled gaps and holes left from tradesmen. This is normally done with expanding foam, calk or silicon etc.
Difficulties arrive if holes have been left unfilled behind units or fixings that cannot be reached. When this happens the units must be removed in order to seal the holes. This is expensive and time consuming.
The way to prevent this is to seal holes as you are going along and to check that any holes are sealed before any units and fittings are fitted.
Key Areas That Cause Difficulty:
1. Plasterer's typically leave a 1 inch gap at the bottom of the plaster board. Seal this before the kitchen units or skirting boards go on. A 1 inch gap running all along a wall makes it difficult to pass an air tightness test because the air escapes through the cavity.
2. Plumbers will drill holes bigger than the pipes that they are for. This gap must be filled before units are placed over them. Before putting kitchen units on the wall or bathroom fittings, check that gaps and holes have been filled. The last thing you want is to fail the air tightness test and be faced with taking a kitchen apart.
3. Boilers! I have seen plumbers drill a 4 inch hole for a boiler flue and then change their minds and re-drill in a different place. Please check and seal after them. Make sure if there is a gap around the flue, it has been sealed.
4. Have your SAP calcs because they will tell us what Ultrasonic Hatch Cover Tightness Test you need to achieve to pass. Without knowing what is required for a pass we cant even issue a certificate.
5. Can Anyone Do a Test
In order for a test to be approved, the tester must have satisfied of one the regulating bodies. These are ATTMA and BINDT. BINDT has a competent persons program where an individual has to undertake courses and demonstrate the ability to conduct tests to the approved standards. Once BINDT is satisfied that an individual has met the appropriate standards, they are added to the list of approved testers. ATTMA has a focus on the testing of commercial buildings which will be discussed in a different article.
Hope this has helped. Any questions just call and ask.
Crooks that scratch off the serial numbers of their firearms are not as smart as they believe. There are several methods that forensic firearms investigators use at their disposal for finding hidden serial numbers. All the methods have a common denominator: Whenever metal is pressure stamped, not only does the metal have indentations of numbers, but the metal underneath the numbers contains resultant structural abnormalities.
There are three methods for revealing missing serial numbers:
If an offender attempts to file off serial numbers on a firearm he used in a crime, there are scientific ways to reveal the serial number no matter how much of the number has been destroyed. Finding such a number can help solve a crime and bring the perpetrator to justice.