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 2009-09-10, 10:21 AM   #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 light gage purlin allowable deflection

light gage purlin allowable deflection
hello everyone!
i would just like to know what is the allowable maximum deflection according to aisc. i'm quite confused what to use
between l/360 for liveload only or l/240 for deadload and liveload combination. also, i have read some that uses l/150 using liveload. thanks....
check out our whitepaper library.
use what you deem appropriate. aisc provides minimums.
you need to be more specific and the answer really depends on your situation.
i use l/360 for floors that have ceilings. this criterion was developed many years ago and it was based on the use of plaster. using l/360 prevents plaster from cracking.
if you have a roof, i would use l/240 for criteria. keep in mind potential ponding. in some areas, i have used l/180 for live load deflection.
if you plan on using light gage steel purlins, you will find that controlling deflection is hard due to their inherent low moment of inertia of a thin section. also keep in mind most of these sections are not true prismatic sections.
you need to use your engineering judgment.
what is the alloable deflection for the roofing being supported?
__________________
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
light gage metals design huangyhg 产品功能分析 0 2009-09-10 10:20 AM
light gage design huangyhg 产品功能分析 0 2009-09-10 10:20 AM
cambering of light gage purlins huangyhg 产品功能分析 0 2009-09-07 10:19 PM
brick cladding deflection limits huangyhg 产品功能分析 0 2009-09-07 04:48 PM
allowable beam deflection huangyhg 产品功能分析 0 2009-09-07 10:50 AM


所有的时间均为北京时间。 现在的时间是 05:44 PM.


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