• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 추계학술대회논문집
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• pp.11-16
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• 2006

It appraises that use an indoor noise standard, a NC value which is a noise appraisal, a dB(A) value, a N value in foreign country because it doesn't yet ready an appraisal standard in domestic. Also, It appraises that the supply and drainage noise which could change water supply pressure, $4kg/cm^2,\;3kg/cm^2,\;2kg/cm^2,\;1.5kg/cm^2,\;1kg/cm^2$, bring about a noise and inquires how does noise level indicates according to each instruments. In case of a water supply pressure standard, $3kg/cm^2$, a C-605is $3{\sim}5dB(A)$ lower than another instruments in directly overhead stories. It appears that all of them is similar to level in directly under level except c-407(2)Analyzed the NC value, c-605is the lowest level, NC-50, of a water supply pressure, $4.0kg/cm^2$, c-407 is the highest level, NC-55.(3) In case of N value, which is one of water supply methods in Japan, it is the lowest level, N-55, of a water supply pressure, $4.0kg/cm^2$ same as NC value and C-407is the highest level, N-60.(4) In case of water supply that is likely to noise level, It appears 6dB(A) level gap each instruments, and C-605 is the lowest level, 63.9dB(A).

• 대한환경공학회지
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• 제37권4호
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• pp.240-245
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• 2015

본 연구에서는 대전광역시 동구를 중심으로 공중화장실에 대하여 악취강도를 공기희석관능법과 기기분석을 통하여 공중화장실관리 및 악취저감대책 수립에 기초자료로 제공하고자 하였다. 악취희석배수는 소변기실에서 10~669, 대변기실에서는 31~464까지 다양하게 나타났다. 한편 민원이 발생할 수 있는 악취강도 2.5도 이상의 악취가 발생하는 곳은 6개소(33%)로 조사되었다. 수세식 발효식 재래식처리방식의 대변기실과 설치년도에 따라 악취강도는 차이가 있으나, 화장실 면적은 차이가 없다. 악취원인물질 확인을 위한 6개 공중화장실을 대상으로 기기분석결과 NH3 최대농도는 2.04 ppm, 평균농도는 0.67 ppm이며, $H_2S$, $CH_3SH$, $(CH_3)_3N$는 검출되지 않았다. 발효식과 재래식공중화장실에는 비누, 방향제, 쓰레기통이 없었다. 화장지는 수세식 화장실의 50%에만 있었다.

• 설비공학논문집
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• 제19권11호
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• pp.789-796
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• 2007

It has been noted, in case of the apartments in collective form, the drainage noise from cleaning of toilet causes many problems in the basement and adjacent rooms, mainly hampering the pleasant housing environment. The problems are increasingly raised by civil complaints with the public offices. Therefore, if the drainage noise generates when wash out of toilet bowl is grasped how the characteristics change according to the sorts of drainpipe, it is considered that the establishment of an effective sound insulation countermeasure could be possible when a civil petition against the drainage noise of apartment house is submitted hereafter. On such viewpoint, this study measured and analyzed the characteristics of drainage noise per the type of drainage pipe, according to KS A ISO $1996-1{\sim}3$, with the horizontal branch pipe and riser pipes in the drainage noise experiment chamber which has the characteristics of the anechoic room. In the result, the pipe type with excellent noise reduction function. The result of this study is considered to become available as fundamental data, to take actions on reduction of drainage noise of the ceiling piping method.