Recent Comments
    Categories

    Archive for October, 2017

    Building Regulations Part E require that builders demonstrate the sound insulation performance of separating walls/floors in new-build dwellings and/or converted dwellings or rooms for residential purposes (as well as those newly formed by a material change of use). This applies when separate dwellings are attached via a common partition not exclusively used by the same occupants. The only way to satisfy the relevant compliance with building regulations is to undertake sound testing in London.

    The regulations set minimum performance requirements for sound insulation between spaces, as to provide reasonable conditions for living. Performance can be demonstrated either by sound testing a sample of as-built constructions/properties.

    Sound Insulation Testing needs to be carried out between pairs of rooms separated by party walls or floors. In most cases the rooms to be sound tested will be the two main habitable rooms – living rooms and bedrooms. The sound testing procedure involves setting up a noise source in a room on one side of the party wall or floor and measuring the noise on both sides of the partition.

    Sound Testing for Part E of Building Regulations has been a mandatory requirement since July 2003. All new build dwellings and conversions which were built after this date require 10% of each party wall/floor construction type to be tested.

    There are two mains types of Sound Testing in London that need to be carried out prior to the building handover, they are:

    Airborne Sound Testing
    Airborne sound tests are usually required between horizontally and vertically separated pairs of rooms. The sound tests are undertaken by using a sound source, amplifier and loudspeaker to generate a high noise level in one room (the source room). Noise measurements are then taken in both the source and receiver rooms using a prescribed number of source and microphone positions. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured. From the results, the airborne sound insulation (DnT,w + Ctr) is calculated and compared to the requirements of Approved Document E. For new build projects you are required to achieve 45dB for airborne sound testing through walls and floors and 62dB for Impact sound testing for floors. For refurbishment projects this changes to 43dB for airborne and 64dB for impact.

    Impact Sound Testing
    For vertically separated rooms, an Impact sound test may also be required. This sound test is undertaken using a “tapping machine”, (as above) which drops a series of weights onto the floor of the upper room. The noise level in the lower (receiver) room is measured for a prescribed number of source and microphone locations. The background levels in the receiver room are measured and the reverberation time in the receiver room is also measured. From the results, the impact sound insulation (L’nT,w) is calculated and compared to the requirements of Approved Document E.

    Sample Sound Tests
    If you are undertaking a conversion project, i.e. subdividing a commercial office building into flats, it is important to ascertain the performance of your existing floor and wall partition. In our experience there is often noise travels directly through the separating partition due to lack of mass or isolation; or, it may be coming along another indirect route – called a flanking path. One of the most common flanking paths is the inner leaf of an external cavity wall, especially if it’s been constructed out of a lightweight weight material such as thermalite blockwork. To offer our clients peace of mind we can visit site before any construction works have taken place and undertake a series of sample sound tests to check the acoustic performance of the existing partitions. This allows our clients to undertake a targeted acoustic design, saving time and money.

    Sound Testing of Building Facades
    For the sound testing of external facades we place the loudspeaker outside  the  building  at a distance of 5m from the facade with  the  angle  of  sound incidence  equal  to  45° ± 5°  and  such  that  the  real  traffic  noise  impact  is simulated  the  best  possible  way.  The speaker and amplifier are used to generate a steady random noise signal via the loudspeaker source. The sound pressure levels are then measured at 2m in front of the facade plane and 1.5m above the ground.

    Contact APT Sound Testing
    All APT’s test engineers carry the latest Norsonic sound testing equipment, which are class one rating. All of our sound testing is completed to a strict quality controlled standard. We provide full ISO & UKAS complaint sound testing. If you would like more information in regards to sound testing in London, please visit our website APT Sound Testing Services website.

    Whenever you want to install a new HVAC system, AC repair, and heating and cooling maintenance, you must count on our heating and air Indianapolis service. We are not a new HVAC service in Indianapolis and we are quite popular among homeowners. So, it must be a great idea to count on our specialists to fix you Air conditioner or heating and cooling system. What do we offer to our lovely customers?

    Air Conditioning Service

    If you want to make your home cool during the summer, then the best idea is to install a new cooling system. Perhaps, you already have one but it is broken already. Don’t worry because we are able to fix it. In addition, we also offer AC replacement if you have a new AC or you may also count on us for your AC maintenance as well as to handle your ductless air conditioner system.

    Furnace Service

    During the winter, the weather will be so cold and you must warm it up with a furnace. If you need a new furnace installation, we are ready to do it for. Maybe, you already have one but it is already damaged, then we can also repair it. We also provide a furnace maintenance, Trane furnace, and Trane HVAC service for our lovely customers in Indianapolis.

    Heat Pump Service

    Instead of heating and air Indianapolis service, we also provide heat pump service if you need it. Suppose you want to install a new heat pump system, then you must count on our specialists. In addition, you can also hire us to do heat pump maintenance to make sure your heat pump will always work or if you need a heat pump repair, then you need to call us immediately. Any heat pump issues will be handled by our technicians.

    Air Quality Service

    Today’s air is not healthy anymore, but you can still make sure that your indoor air quality is good enough for breathing. Therefore, you really need our air quality service to make your home become a healthy home. We offer you indoor air quality service and whole house humidifiers. So, if you want to breathe healthily, then you must entrust your air quality to our heating and air Indianapolis service for sure.