scholarly journals Structural properties of a wall construction of "knap concrete wall units" sponsored by Knap America Inc.

1940 ◽  
Author(s):  
Herbert L Whittemore ◽  
Ambrose H Stang ◽  
Cyrus C Fishburn
Keyword(s):  
Structural Properties ◽  
Concrete Wall ◽  
Wall Construction

Countermeasures against floor impact sound by heavy impact source of a box floor structure in a reinforced concrete wall construction testing device

2021 ◽  
Vol 263 (5) ◽  
pp. 1396-1404
Author(s):  
Ryuta Tomita ◽  
Kyoko Abe
Keyword(s):  
Reinforced Concrete ◽  
Sound Level ◽  
Sound Insulation ◽  
Testing Device ◽  
Concrete Wall ◽  
Heavy Weight ◽  
Floor Structure ◽  
Reinforced Concrete Wall ◽  
Wall Construction ◽  
Bare Surface

We have performed experimental examinations for the purpose of proposing a floor finishing structure with superior effects in terms of combating heavy-weight floor impact sound. We have developed a box floor with ease of construction and excellent heavy-weight floor impact sound insulation performance and examined its effect with a 1200 × 1200 mm test piece connected to inter-noise 2020. The box floor has a floor finishing structure with anti-vibration and sound insulation measures aimed at improving measures against heavy-weight floor impact sound. We herein report the results of a basic examination on the reduction of the transmitted heavy-weight floor impact sound of a box floor structure in a reinforced concrete wall construction testing device when the area is further expanded to about 10 . As a result, with the air layer under the box floor open, the floor impact sound level was reduced by 9 dB in the 63-Hz band compared to the bare surface. In addition, with the air layer at the bottom of the BOX floor sealed, the floor impact sound level was reduced by 5 dB in the 63-Hz band compared to the bare surface.

Building methods in the architecture of Álvaro Siza

2000 ◽  
Vol 4 (3) ◽  
pp. 265-280
Author(s):  
Vincenzo Riso
Keyword(s):  
Reinforced Concrete ◽  
Concrete Wall ◽  
Reinforced Concrete Wall ◽  
Wall Construction ◽  
Construction Strategies ◽  
Alvaro Siza ◽  
Building Methods

In the poetics of Álvaro Siza, the enriching experience of making architecture on site has always been very important; but even though his work has been widely recognized, published and discussed, little is known about the construction strategies employed. This paper reviews Siza's use of reinforced-concrete wall construction to create, through a process of subtraction and a search for the essential, building forms of a very particular kind.

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