几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量  


返回   几何尺寸与公差论坛------致力于产品几何量公差标准GD&T (GDT:ASME)|New GPS(ISO)研究/CAD设计/CAM加工/CMM测量 » 三维空间:产品设计或CAX软件使用 » CAD设计 » 产品功能分析
用户名
密码
注册 帮助 会员 日历 银行 搜索 今日新帖 标记论坛为已读


回复
 
主题工具 搜索本主题 显示模式
旧 2009-09-09, 03:56 PM   #1
huangyhg
超级版主
 
huangyhg的头像
 
注册日期: 04-03
帖子: 18592
精华: 36
现金: 249466 标准币
资产: 1080358888 标准币
huangyhg 向着好的方向发展
默认 haunted house

haunted house?
i have client describe the following happening at her house:
"i have the most disturbing noises inside the walls, it sounds like things are falling not just settling noises, bought the home 1.5 years ago after 5 months i heard strong noises and some are settling but these noises are out of the ordinary. have had it thouroughly checked for rodents etc. now i was told that it could be structural problems, insurance structural engineer was inconclusive so now i want my own engineer. i have a scratching behind the headboards in all then like something is falling.and knocking all the time."
the house was built in 2003, and is on slab on grade. can anyone tell what should i look for to determine the cause of noises?
seems like you should spend time there and hear them for yourself. bring some candles and a ouigi board.
place a voice operated sound recorder and than listen to the sounds.
look for bare windows. i've seen widows act like diaphragms and amplify outside noises, causing standing sound waves. if there are bare windows, have them hang curtains or move the headboard a couple of inches.
"art without engineering is dreaming; engineering without art is calculating."
by the way i bought a house in 2007 which was built in 2006 so pretty new i guess.
it's brand new fridge in the kitchen when turns off, creates voices like ocean waves. they are pretty scary at night
before we figured out what was the origin. also the kitchen exhaust fan lid is loose. with strong winds it bangs on
aluminium duct behind and creates noise that whole house is about to fall. see if you can find similar problems.

i would still look for rodents, possums, racoons, cats, etc. they can come and go pretty much as they please.
what brand is the fridge?
is it vinyl siding? this can make noises if it is installed too tight i think. sounds like mice inside the wall.
are there vent stacks in these walls?

plumbing (hot water pipes) expanding, then contracting against fixed supports that are too tight.
so the water in the pipe changes temperature, the pipe pulls for a while, then "jerks" into its new position when the movement is too great. as the pipe cools off (after the dishwasher finishes, or after the tub or shower is filled) then the "pull" is in the opposite direction, but at a different time. one movement might be against a stud or frame and cause nose, the other direction will be away from a stud and be quiet. cold water lines might have water hammer problems, but seldom expansion problems - unless they go through an unheated slab or crawl space.
drain lines were also noisy in my old house - same problem.
...
but we had some d*mn noisy squirrels in the attic last fall .... they didn't drop things though. merely "scritched and scittered" around.
structurebeton,
i have read some articles on skeptical investigations of poltergeists. apparently, these almost invariably occur in houses that contain disturbed teenagers.
can you rip out any walls?
i had a buy a refridgerator for my house. the manual has a section describing all the weird noises it is capable of making.
jhg
__________________
借用达朗贝尔的名言:前进吧,你会得到信心!
[url="http://www.dimcax.com"]几何尺寸与公差标准[/url]
huangyhg离线中   回复时引用此帖
GDT自动化论坛(仅游客可见)
回复


主题工具 搜索本主题
搜索本主题:

高级搜索
显示模式

发帖规则
不可以发表新主题
不可以回复主题
不可以上传附件
不可以编辑您的帖子

vB 代码开启
[IMG]代码开启
HTML代码关闭

相似的主题
主题 主题发起者 论坛 回复 最后发表
ever heard of steel frame house co., circa 1930s huangyhg 产品功能分析 0 2009-09-09 08:45 AM
digging out crawl space under existing house huangyhg 产品功能分析 0 2009-09-08 06:47 PM
concrete grade beams as a foundation for a log house huangyhg 产品功能分析 0 2009-09-08 12:13 PM
building a house on caissons huangyhg 产品功能分析 0 2009-09-07 05:29 PM
12 x 6.5x 38 thick x 41 residential basement i-beam con huangyhg 产品功能分析 0 2009-09-06 10:30 PM


所有的时间均为北京时间。 现在的时间是 10:06 AM.


于2004年创办,几何尺寸与公差论坛"致力于产品几何量公差标准GD&T | GPS研究/CAD设计/CAM加工/CMM测量"。免责声明:论坛严禁发布色情反动言论及有关违反国家法律法规内容!情节严重者提供其IP,并配合相关部门进行严厉查处,若內容有涉及侵权,请立即联系我们QQ:44671734。注:此论坛须管理员验证方可发帖。
沪ICP备06057009号-2
更多