首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Between what times is the road traffic lightest? Which day of the week has the least traffic?
Between what times is the road traffic lightest? Which day of the week has the least traffic?
admin
2009-05-13
50
问题
Between what times is the road traffic lightest?
Which day of the week has the least traffic?
Good afternoon. I’m Paula Bundell and I am giving you the lectures on Environmental
Noise this term. Today we are going to look into the effects of noise on a planned housing
estate in a particularly difficult part of the new Manchester Park area.
This site is not as bad as some I have researched in the past. The Blacktown airport is
closed from 6pm to 7am and this is a great advantage to the site. The only noise after dark
is from the highway and the traffic is somewhat reduced between 7.30pm and 5.30am. 【Q31】
So, the people most affected by the noise will be, I expect, housewives. By the time most of 【Q32】
the students and workers have arrived back home in the evening during the week the noise
will have abated to a fairly large extent. The weekends are still a problem of course, but the
traffic is certainly reduced on Saturdays to a large extent and even more so on Sundays. 【Q33】
Of course modifications to houses will be necessary at a site like this and they come at a
significant cost to the developer and home buyer. The modifications I am about to outline
will add about $25,000 to the price of a newly-built house. That will still mean a cheaper 【Q34】
house than in a less noisy and more desirable area.
A bit of background would not go astray. I understand that you are all familiar with the
proposed development site at Manchester Park.
It’s a particularly difficult one in terms of noise with the highway along the eastern
perimeter and the Blacktown airport not 3 kilometres away to the north.
Of course, those nearest the highway will be the worst hit, with heavy traffic noise as
well as the noise from the light planes overhead. As you all know, the normal noise
threshold for private housing is 55 decibels. At this site the levels have been recorded as 【Q35】
high as 67 decibels.
The construction of the houses has to be somewhat modified from houses in most areas. In
the houses on the highway and in the noisiest areas of this site there will be a need for
specialised double glazing and special acoustic seals will have to be fitted to the doors. 【Example】
All exterior doors in this especially noisy pocket will have to be solid core wood doors with
hinges. Every house built on this site, not just those adjacent to the highway or nearest to
the airport, will require high density insulation materials in the roof. Not only will all the
roofs need insulating, the exterior walls will be required to be double brick. All ceilings will 【Q36】
require double thickness plaster board to be used in the construction. In the noisiest areas
mechanical ventilation will have to be installed in the exterior walls. In those areas with 【Q37】
sealed windows it will be necessary to fit fans with absorbers to cut out the noise in those
particular houses. Air conditioning units could also be fitted in the ceilings of such houses 【Q38】
but this is substantially more expensive than fans, and may not be needed on this site.
Coming back now to the double glazing I mentioned before. Specialised double glazing
requires a larger air gap between the inner and outer glass than normal double glazing.
The gap must be at least 7 centimetres. The thickness of the glass is also a factor, 8 【Q39】
millimetres on the outside and 6 on the inside pane. It is essential that the glass be thicker
on the outside than on the inside and that the gap between the panes of glass be a
minimum of 7 centimetres.
Obviously, the noise factor will have to be taken into consideration with the layout of
the houses. Living areas will have to be designed at the back of the houses away from the
highway. Bedrooms and living rooms will have to be built towards the back, and for those 【Q40】
houses closest to the highway two layers of plasterboard will be needed for the interior
bedroom walls. Those rooms constructed at the front of the houses should be garages,
laundries, kitchens, bathrooms and dining rooms.
I have come to the conclusion that this development should go ahead, but with various
acoustic modifications according to the position of the block in relation to the highway
and intersection.
选项
答案
Sunday(s)
解析
转载请注明原文地址:https://jikaoti.com/ti/x6tYFFFM
本试题收录于:
雅思听力题库雅思(IELTS)分类
0
雅思听力
雅思(IELTS)
相关试题推荐
Nineteenth-centuryarchitectEugene-EmmanuelViollet-le-DuccontendedthatParis’sNotre-Damecathedral,builtprimarilyinthe
Animalsignals,suchasthecomplexsongsofbirds,tendtobecostly.Abird,bysinging,mayforfeittimethatcouldotherwise
Animalsignals,suchasthecomplexsongsofbirds,tendtobecostly.Abird,bysinging,mayforfeittimethatcouldotherwise
WhetherthelanguagesoftheancientAmericanpeopleswereusedforexpressingabstractuniversalconceptscanbeclearlyanswer
ArecentstudysuggeststhatvitaminEsupplements,despitewidespreadbeliefintheir______,arenobetterthansugarpillsfor
ThepainterPeterBrandonneverdatedhisworks,andtheirchronologyisonlynowbeginningtotakeshapeinthecriticallitera
Becausetheeditorsrefusedtotakeastandoncontroversialsubjects,theirmagazineacquiredareputationforintellectual____
BecauseAlexwasavery______person,hefoundsatisfactiononlyinworkthatinvolvedintellectualstimulation.
Maggieisaprocrastinator,naturallyinclinedto(i)______andto(ii)______discussions.
PART1Theexaminerwillaskyouquestionsaboutyourself,suchas:——What’syourname?——Wheredoyoulive?——Whatfamilyme
随机试题
简述竞争对手分析的四个方面。
为患者进行吸痰时不妥的是()。
女性,50岁。因患短肠综合征,予全胃肠外营养(1FPN)治疗。应用l周时患者出现昏迷,但尿内无酮体。患者既往曾有空腹血糖高(11mmol/L)病史。此瘸的预防主要是
下列属于热原污染途径的错误说法的是()
现场施工准备的质量控制中关于施工图纸的现场核对,应核对( )。
申请领取施工许可证,应当具备下列条件:( )。
在拟订航次租船合同条款时,为什么代理人的经纪人必须列明委托人的名称、住址或主要营业场所地址?
纳税人不能提供完整、准确的收入及成本、费用凭证,不能正确计算其应纳税所得额的,由税务机关核定其应纳税所得额。核定的方法有( )。
按照通信专业划分,通信业务资费主要包括()。
卡车司机甲在行车途中,被一吉普车超过,甲顿生不快,便加速超过该车。不一会儿,该车又超过了甲,甲又加速超过该车。当该车再一次试图超车行至甲车左侧时,甲对坐在副座的乙说:“我要吓他一下,看他还敢超我。”随即将方向盘向左边一打,吉普车为躲避碰撞而翻下路基,司机重
最新回复
(
0
)