標題: Classroom noise measured 70 db [打印本頁] 作者: nlald74833 時間: 2015-12-2 19:45 標題: Classroom noise measured 70 db "Breakthrough! Sudden! Sudden!" Series of deafening sound of the hammer drill, walking in the Zhabei District Central Primary School second floor corridor, we can clearly see the construction next door to the site lively scene. Due to the site and classroom less than 50 meters from the nearest straight line, inviting voice teacher in the class to shout, students often could not hear what the teacher. More parents are worried: noise pollution, dusty, children learn the body are affected.
School teacher reflects on Friday so far, annoying noise the site no longer sounded.
Teacher in the class screaming shouting
December 11, she had got to the Morning News to reflect the public recently, a micro-channel her child's teacher parents in hot lead. Roughly reads: "these two days playing ground, the noise is mainly affected by particularly severe noise bothered us, simply could not hear the speech, he had screaming shouting, school bell can not hear me when no classes can go to the office to hide. hide. Children always really hard in the classroom. "
According to a parent surnamed Yan introduced, at 11:30 on December 9, she stood in the primary school Yuanping Road gate, I heard the job site deafening sound, the child's classroom from the site only separated by a wall, the sound will be louder. Her advice: "Can install a layer of insulation, dust equipment between school and work."
Ms. Zhou learned two or three months the construction site throughout the day,tn reuqin pas cher, dust, noise has seriously affected the teaching, "I hope the site can wait until winter to start again."
Classroom noise measured 70 db
At 13:00 on the 11th, the reporter went to the elementary school. From Simon to enter the school building, students are in class, the building is very quiet and orderly. To the southeast along the corridor has been the direction to go, yet in the end, you hear the "snap! Sudden! Sudden!" Sound, like the impact of drilling tools such as at work, go farther east south louder. In the end,http://huanghongm.com/news/html/?50382.html, turn right into the eye a construction site. Several piles of gravel, dirt piled in the center of the site, workers are in the construction field.
From the site of the nearest row of the classroom building a total of five layers, one is a restaurant, two to five are classrooms, each four classrooms, doors and windows facing the site. On the second floor corridor railings,piumini woolrich, using a mobile phone in the preliminary measure the noise detection software, the noise about 80 decibels. Class, classroom doors and windows closed, pull down the shutters. The classroom, the reporter walked into the classroom, when the measured noise is approximately 70 db open classroom, close the door about 60 db. One girl said: "When the class was noisy, my head should explode often could not hear what the teacher.."
Staggering construction, increase soundproofing
Zhabei District Urban Construction Peng Town Office staff into a new high,http://bbs.5qwan.com/home.php?mod=space&uid=1057453, said the noise impact for the site of teaching situations and the knowledge to do before urban construction. Decibel limit on noise, according to "People's Republic of China City Regional Environmental Noise Standards", housing, cultural and educational institution dominated region, the noise can not be more than 55 db during the day and at night no more than 45 db. Construction time limit in 7:00 to 10 pm.
Into a new high, said the construction side will get in touch with,http://211.86.128.2/gjjl/Review.asp?NewsID=595, and urge them to strictly comply with regulations, civil construction. Requested its cooperation in 8:00 to 15:00 of the school curriculum more concentrated period of time,air max 90 pas cher, to minimize the noise larger works, staggering construction.
Engineering construction side Shanghai Cheng Guang Building Decoration Engineering Company Limited manager surnamed Lu expressed their willingness to positive action, reduce noise, reduce the impact on teaching and learning. He explained that some time ago to dig the foundation, so the noise is relatively large. After receiving the notice Peng Town Urban Construction Office, is already noisy mechanical dismantling. The site construction time is usually in the morning on weekdays 7-11, 1-5 pm time. In the future, noisy works will be carried out as far as possible weekend,woolrich outlet,http://www.metabored.com/boards/viewtopic.php?pid=557089#p557089, weekday construction also will try to avoid school 8:00 to 15:00 class time. In addition, the site will be surrounded by new soundproofing.
Construction CLC, this site Zhabei District Central Primary School next to the second,http://framasoft.net/spip.php?article1110, located in Yuanping Road, north of Lingshi Road intersection, an area of about 10,000 square meters or so, the project is in the construction business community facilities, is expected to be completed in June next year.