scholarly journals Evaluation of Construction Cost, Time, and Sustainable Attributes of Drywalls Supported by Resilient Channels

2020 ◽  
Vol 12 (19) ◽  
pp. 8102
Author(s):  
Kyung Ho Kim ◽  
Jin Yong Jeon
Keyword(s):  
Co2 Emissions ◽  
Economic Efficiency ◽  
Life Cycle Cost ◽  
Construction Cost ◽  
Sound Insulation ◽  
Gypsum Board ◽  
Concrete Wall ◽  
Concrete Walls ◽  
High Rise ◽  
Insulation Performance

In this study, a gypsum board wall was developed using resilient channels to improve sound insulation performance, constructability, and economic efficiency; the effect of the application of the developed wall on skyscrapers and long-term housing, one of the main forms of modern buildings, was also comprehensively evaluated. Resilient channels were inserted and fixed to ensure the constructability was suitable for high-rise buildings. In addition, the sound insulation performance, durability of the wall, CO2 emissions, and life-cycle cost (LCC), which are key elements for economic efficiency, constructability, and sustainability, were analyzed. The developed lightweight gypsum board drywall with resilient channels was compared with a concrete wall as well as a double stud gypsum board wall, which has been most widely used among existing drywalls. The sound insulation performance and durability were evaluated in a laboratory, and the other items were evaluated after constructing the walls in a hotel building with an area of 2956 m2. The evaluation results show that the developed wall exhibited a 3 dB higher sound insulation performance than the concrete wall, even though it was thinner by 50 mm, and the wall secured the grade of “severe duty” (SD) based on the BS 5234-2 standard in durability evaluation, indicating that it can sufficiently replace concrete walls. Moreover, when the developed wall was installed in an actual building and compared with a concrete wall, a 14.7% reduction in construction cost, 59% reduction in CO2 emissions, and 30.4% reduction in the LCC of the drywall, considering even the remodeling and dismantling stages of the building, were observed. Therefore, it was proven that the newly developed resilient channel drywall with improved constructability has significant value in terms of sound insulation performance, economic efficiency, safety, and eco-friendliness.

Analysis of Sound Insulation Performance of Reinforce Concrete Walls between Households According to Wall Thickness Criteria in Apartments

2017 ◽  
Vol 873 ◽  
pp. 237-242
Author(s):  
Hye Kyung Shin ◽  
Kyoung Woo Kim ◽  
A Yeong Jeong ◽  
Kwan Seop Yang
Keyword(s):  
Reinforced Concrete ◽  
Wall Thickness ◽  
Field Measurements ◽  
Reinforce Concrete ◽  
Sound Insulation ◽  
Concrete Wall ◽  
Minimum Thickness ◽  
Concrete Walls ◽  
Reinforced Concrete Wall ◽  
Insulation Performance

Sound insulation between households is properly ensured to provide a quiet residential environment in apartments. The legal requirements for sound insulation in apartments in Korea are set to meet the wall’s minimum thickness or sound insulation performance. When construction companies choose the walls that satisfy thethickness in the standards of boundary walls between households, it is difficult to know the sound insulation performance. In this study, the sound insulation performance of reinforced concrete walls is predicted according to the wall thickness criteria and analyzed through field measurements. In newly built apartments, the reinforced concrete wall’s sound insulation performance(R'w) is 56 – 66 dB, which is a similar level of the international criterion. And the sound insulation performance of the reinforced concrete wall according to thickness standards is similar to sound insulation performance standardsof Korea.

Study of various wood stud partitions with various gypsum board and proprietary acoustical sound insulation products

2021 ◽  
Vol 263 (1) ◽  
pp. 5838-5846
Author(s):  
Kristin Salenger
Keyword(s):  
Sound Insulation ◽  
Gypsum Board ◽  
Measurement Results ◽  
Insulation Performance ◽  
The U.S ◽  
Better Than

Wood stud construction is common in residential and hospitality buildings in some parts of the U.S.; however, there is a deficiency of field-tested sound insulation performance of partitions constructed with wood studs that are spaced closer than 16" on center. This study presents the sound isolation measurement results of a set of fifteen partitions within an existing facility that has been experiencing repeated complaints of poor acoustic privacy between horizontally adjacent spaces. The tested partition types varied between single stud, double stud, and single studs with resilient channel constructions. The walls had four materials of varying combinations applied, including 19/32" OSB, Type X gypsum board, proprietary enhanced gypsum board, and proprietary mass loaded vinyl. It was shown that the partition with enhanced gypsum board performed better than the same partition with Type X, the double stud partition performed lower than expected, and the addition of mass loaded vinyl to both double and single stud partitions did not affect the ASTC rating, among other findings.

scholarly journals A Study on the Sound Insulation Performance of Cross-laminated Timber

Materials ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4144
Author(s):  
Jui-Yen Lin ◽  
Chieh-Ting Yang ◽  
Yaw-Shyan Tsay
Keyword(s):  
Performance Test ◽  
Prediction Models ◽  
Sound Insulation ◽  
Wall Structure ◽  
Gypsum Board ◽  
Cross Laminated Timber ◽  
Simulation Tools ◽  
Cavity Structure ◽  
Insulation Performance ◽  
Double Wall

Cross-laminated Timber (CLT) has become an emerging board material of wood construction that is strong enough to sustain a high-rise building. However, many wooden congregate housing units overseas that utilize CLT have poor sound environments because the low mass of such wood influences sound insulation performance. In this research, we explored the effect of different CLT walls on sound insulation performance and integrated applicable sound insulation simulation tools to simplify the process of designing a CLT wall structure. This research aimed at a double wall and CLT combined with a gypsum board as the research object. The sound insulation performance test was carried out in a laboratory, while the sound insulation performance of the structure was predicted through simulation tools and prediction models and then compared with the measured values to verify the applicability of the simulation tool. The CLT with a double wall and CLT with gypsum board (CLT + GB) achieved Rw of 50 dB. The numerical simulation had better prediction performance than INSUL at the double wall, while the double wall with cavity structure was close to the measured result via mass law calculation. The INSUL-predicted CLT with a gypsum board at 500 Hz~3150 Hz was close to the measured value.

Study on Design Standard of Distribution Transformers considering Economic Efficiency and CO2 Emissions

2010 ◽  
Vol 130 (9) ◽  
pp. 826-832 ◽  
Author(s):  
Tomoyuki Yamada ◽  
Masaaki Takagi ◽  
Hiromi Yamamoto ◽  
Kenji Yamaji
Keyword(s):  
Co2 Emissions ◽  
Economic Efficiency ◽  
Design Standard ◽  
Distribution Transformers

Effect of different types of ceilings on floor impact sound insulation performance in CLT model building

2021 ◽  
Vol 263 (2) ◽  
pp. 4402-4409
Author(s):  
Atsuo Hiramitsu ◽  
Susumu Hirakawa ◽  
Takahiro Tsuchimoto ◽  
Takashi Yamauchi
Keyword(s):  
Model Building ◽  
Sound Insulation ◽  
Impact Noise ◽  
Timber Construction ◽  
Stress Relieving ◽  
Measurement Results ◽  
Absorbing Material ◽  
Vibration Insulator ◽  
Effective Use ◽  
Insulation Performance

The floor impact noise generated in a building often causes problems among residents. The floor impact sound insulation performance of timber construction buildings is lower than that of concrete construction. However, due to the large supply of wood and the stress-relieving effects of wood, the use of wood is being promoted around the world. In Japan, the Act on the Promotion of the Utilization of Wood in Public Buildings was enforced to promote the use of CLT (Cross Laminated Timber) for the effective use of wood. We have been experimentally investigating the effect of floor finish structure in CLT model building. In this paper, we report the measurement results of the change in floor impact sound insulation performance when the suspended ceiling structure was changed. As results, it was confirmed that the effect of the sound-absorbing material in the ceiling cavity and the effect of the double-layer ceiling board were effective. In addition, it was clarified that the dry-type double floor structure with rubber vibration insulator on its legs is an effective floor finish structure for improvement of heavy and light weight floor impact sound insulation performances.

Effect of ceiling and dry-type double floor on heavy-weight floor impact sound in concrete building and CLT building.

2021 ◽  
Vol 263 (3) ◽  
pp. 3064-3072
Author(s):  
Takashi Yamauchi ◽  
Atsuo Hiramitsu ◽  
Susumu Hirakawa
Keyword(s):  
Frequency Band ◽  
Sound Level ◽  
Center Frequency ◽  
Sound Insulation ◽  
Octave Band ◽  
Band Center ◽  
Heavy Weight ◽  
Concrete Building ◽  
Floor Structure ◽  
Insulation Performance

The air layer between the interior finishes and the structure is used as piping and wiring space. In many cases, ceilings and dry-type double floors are commonly constructed in Japan. However, the effect of the air layer of ceilings and dry-type double floors on the heavy-weight floor impact sound insulation performance has not yet quantitatively investigated. Therefore, in this study, the same floor and ceiling structures were constructed for concrete and CLT buildings, and the heavy-weight floor impact sound was investigated. As results, it was confirmed that the reduction amount of the heavy-weight floor impact sound by the ceiling tended to be smaller in CLT buildings than in concrete buildings. However, the trends were similar. Due to the dry-type double floor structure, the heavy-weight floor impact sound level was increased in concrete building and decreased in CLT building at 63 Hz in the octave band center frequency band. Therefore, it can be said that the dry-type double floor structure can be used to improve the heavy-weight floor impact sound performance in the CLT building.

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