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? Who will notice the noise most?
Between what times is the road traffic lightest? Who will notice the noise most?
admin
2009-05-13
63
问题
Between what times is the road traffic lightest?
Who will notice the noise most?
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
housewives∥housewifes
解析
转载请注明原文地址:https://kaotiyun.com/show/HQAO777K
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
RatherthanviewingtheMassachusettsBayColony’santinomiancontroversyastheinevitable(i)______oftheintransigentopposing
Thereisnothingquitelikethismovie,andindeedIamnotaltogethersurethereismuchmoretoitthanitslovely(i)______.A
Alwayscircumspect,shewasreluctanttomakejudgments,butoncearrivingataconclusion,shewas______initsdefense.
Althoughplantandanimalspeciesthatbecomeestablishedinecosystemswheretheydidnotoriginatearesometimesreferredtob
Becausetheeditorsrefusedtotakeastandoncontroversialsubjects,theirmagazineacquiredareputationforintellectual____
Rosesmiledapprovingbutgaveneitherwrittennorspokenpermissiontoproceedwiththeproject:herconsent,inshort,was____
Ashealthcareandnutritioncontinuetoimprove,Americansonaverageareenjoyingincreased______,livingtoamoreadvanceda
Itishardly______thecommitteecallsfor:rudimentarycompetencewouldbeanimprovementonthecurrentchaos.A.accountabil
MaryBarton,particularlyinitsearlychapters,isamovingresponsetothesufferingoftheindustrialworkerintheEnglando
CarlaL.Peterson’sDoersoftheWord(1997),astudyofAfricanAmericanwomenspeakersandwritersfrom1830-1880,isanimpor
随机试题
试述国际市场营销学的研究内容。
某肉鸡场,近来阴雨天气较多,气温25℃左右,3周龄鸡出现精神沉郁,食欲减退,被毛蓬乱,呆立一隅,冠及可视黏膜苍白,排水样稀便,进行性消瘦,有的患鸡粪便带血,每日死亡率5%~10%。对该鸡场患鸡进行诊断最好先进行
A.用法用量B.药物相互作用C.禁忌D.药物过量根据《化学药品和治疗用生物制品说明书规范细则》了解药品不能应用的人群或者疾病情况,可查阅()。
甲与乙签订房屋买卖合同,将一幢房屋卖与乙。双方约定,一方违约应支付购房款35%的违约金。但在交房前甲又与丙签订合同,将该房卖与丙,并与丙办理了过户登记手续。下列选项中,正确的有()。
钢筋冷拉后,则其()。
佛教四大天王中,身白色、手持琵琶的是()。
在没有客人时,下列做法中符合商场服务人员站姿要求的是()
某人准备了两杯等量的水及一些块状冰糖与白糖粉末(两者成分均为蔗糖),做溶解速率与溶解度的实验。在25℃时,他将相同质量的冰糖与白糖粉末分别加入两个杯子中,并以相同的速率不断搅拌,最后两个杯子中均有未溶解的糖。则下列糖的质量百分比浓度与搅拌时间的关系图,正确
请你根据背景材料,用不超过200字的篇幅,概括一下所反映的主要问题。(20分)以科学发展观为指导,就电力工业的科学发展,自拟题目,写一篇评论性的文章。1200字左右。(50分)
CAM是计算机主要应用领域之一,其中文含义为______。
最新回复
(
0
)