building acoustics Articles
Green Walls: The New Wall-Y Technical Manual Is Online
The Wall-Y Technical Manual is now available on our website, with updated data and a new graphic design. A useful tool to have all the technical specifications of our product and the prescriptions to correctly design systems for vertical green walls. Wall-Y, the high-strength Geoplast grid, is the ideal solution for creating green walls and for delimiting spaces in gardens or inside buildings. ...
Bloodhound: Beyond the Speed of Sound
During tests in South Africa, the Bloodhound supersonic car has reached its fastest speed to date, blasting to an incredible 628 mph. The unique pencil-shaped car, powered by a rocket engine and a jet engine, is designed to reach speeds of 1,050 mph. It is being continually developed with the aim of beating the current land speed record of 763 mph, achieved on 15th October 1997 by RAF pilot Andy ...
Thermal comfort, indoor air quality and acoustics: a conceptual framework for predicting occupant satisfaction in sustainable office buildings
The authors propose and test a conceptual framework that delineates occupants' satisfaction with thermal comfort, indoor air quality, and acoustics conditions via post-occupancy evaluation (POE). A self-administered, internet-based, POE questionnaire was administered in two office buildings that were designed and operated as county service centres in a Midwestern state. A series of multiple ...
A new and improved courtyard at Wynberg Girls High School in Cape Town with Geoplast Drainroof - Case Study
Drainroof, Geoplast’s solution for roof gardens made of recycled low-density propylene, was recently chosen for alterations at Wynberg Girls High School in Cape Town. Noero Architects, a prestigious architectural firm with offices in Cape Town and Port Elizabeth, conceived and supervised the project, while Abrach Construction carried it out. De Villiers & Hulme participated as ...
Location of sound sources - Case Study
IAG offers its customers the identification and location of noise in outdoor environments with multiple sources. Through the Acoustic Camera technology, an acoustic antenna with numerous microphones, a multichannel signal acquisition system and a software for digital processing of acoustic signals, we will know which are the main sources of noise and the contribution of each of them in a ...
Difference between Class 1 and 2 Sound Level Meters
What is the difference between a Class 1 and a Class 2 Sound Level Meter? The answer to this can be quite complex, but to put it simply: A Class 1 sound level meter is generally seen as more accurate than a Class 2 meter; and, A Class 1 sound level meter is able to measure sound over a wider frequency range than a Class 2 meter. The technical difference The Class of a sound level meter ...
Alquiclima: Rental Service of equipment for heating, ventilation, and air conditioning (HVAC)
Winter is coming and with it the unbearable cold that sometimes makes it impossible to be outside. In IVERNA we are pioneers in heating and portable air conditioning and another year we offer our range of products to go through this season pleasantly. We have portable industrial heaters, very resistant, to face a multitude of air conditioning projects, either indoors or outdoors. Whether you ...
Planning for shake down
Design improvements at operating power plants continue to challenge plant staff and original equipment manufacturers (OEMs). While basic design calculations consider the capacity of components and stresses resulting from their use, few consider vibration issues in great detail in the design. Vibration can lead to instrumentation failure, cracking and fatigue damage, or early degradation of the ...
Case study - Filming breakout noise from café and concert venue
Problem A combined bar, bistro and concert venue in the city center has been renovated with a great emphasis on acoustic noise dampening. Nevertheless, the venue is still getting complaints from neighbours close by due to breakout noise from the location, especially during late night concerts. The establishment consists of a bar and bistro on the ground floor, with the concert venue on the floor ...
By Norsonic AS
Melbourne water’s, Werribee wastewater treatment plant, Victoria, Australia - Case Study
Werribee Wastewater Treatment Plant The GE Jenbacher generator runs on sewage gas (a type of biogas) produced from the sites anaerobic digesters. The generator is connected, via an integrated 415V circuit panel to step-up transformer. High voltage electricity is exported via transformers to provide base load power to Melbourne Water. The plant is designed to supply Melbourne Water with its ...
Relationship between indoor environmental quality and building envelopes covered by plants: a review of the literature
It is not clear whether the benefits of improving outdoor environmental conditions inherent in urban plants apply to building indoor environment when plants are integrated on building envelopes. This paper reviews published research to date to clarify whether building envelopes covered by plants have effects on indoor environmental quality, and building occupants' health and comfort. The review ...
Elliott-Lewis installs resurrected EVAPCO cooling tower for historic Philadelphia residence
Recreating Discontinued Model Makes for a Smooth Installation Downtown Philadelphia’s Benjamin Franklin House needed an HVAC overhaul but, like most historic buildings, had no room to expand. EVAPCO reached into its archives for the specs of the building’s original cooling tower and created a more powerful, up-to-date version for the same space, making the installation ...
By Evapco Inc.
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