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
65
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://kaotiyun.com/show/TQAO777K
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
Farfrombeing______thecorporateworldbecauseofcutbacks,seriousresearchersareplayingagrowingroleininnovationatman
BecauseAlejandraandRainahaveneverallowedtheirdifferencesofopiniontocomebetweenthem,theirfriendshipremains______
Thespeaker,praisedforherstyleyetridiculedforhervacuity,oftenmovednaivelistenerswith(i)______aloneandledthem
Theproposedresearchprojectswerepraisedasboth(i)______and(ii)______:theywereinexpensiveyetpromisedtobreaknewgro
Itishardly______thecommitteecallsfor:rudimentarycompetencewouldbeanimprovementonthecurrentchaos.A.accountabil
Althoughrecentyearshaveseensubstantialreductionsinnoxiouspollutantsfromindividualmotorvehicles,thenumberofsuch
MaryBarton,particularlyinitsearlychapters,isamovingresponsetothesufferingoftheindustrialworkerintheEnglando
PART1Theexaminerwillaskyousomequestionsaboutyourself,suchas:—Whattownorcitydoyoucomefrom?—Canyoudescrib
随机试题
A.口腔黏膜可见边界清楚的红斑,伴口角黏膜糜烂、皲裂B.有服用大剂量抗生素病史,表现舌黏膜发红、乳头萎缩,灼痛明显C.舌背中央后部黏膜出现菱形的丝状乳头萎缩区,基底黏膜充血发红,表面可出现结节状增生D.多见于婴幼儿及老年体弱者表现为充血的口腔黏膜上出
心搏骤停病人首选的复苏药物是
形成级差地租I的两个条件是()。
建设工程项目竣工质量验收的基本对象是()
企业应当在资产负债表日对应收款项的账面价值进行检查,有客观证据表明该应收款项发生减值的,应当将该应收款项的账面价值减记至预计未来现金流量现值,减记的金额确认减值损失,计提坏账准备。()
按照现行《房屋完损等级评定标准》,出现()等情况的,可评定为基本完好房。
台湾作家柏杨认为:中国文化似一条壮观伟大的河流,但是到了14世纪,“它终于淤塞成一个酱缸,构成一个庞大而可哀的时代。”形成“酱缸”现象的主要因素是()。
社会主义思想道德建设的重点是()。
Itwouldbeinterestingtodiscoverhowmanyyoungpeoplegotouniversitywithoutanyclearideaofwhattheyaregoingtodoa
(2010下集管)关于计算机机房安全保护方案的设计,以下说法错误的是______。
最新回复
(
0
)