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 - 查看单个帖子

brick veneer height limitations
check your delfection limits. 51'-0 seems awfully high to be supported by wood. you may want to put in some relieving angles.
check technical note @
in most codes, it is not allowed to vertically support masonry or concrete with wood. see uniform building code 97 section 2307.
or check the new ibc 2000, sections 2304.12 and 2305.1.5.
if the brick is supported by concrete foundations and the wood is only laterally supporting the masonry, then you need to keep the lateral deflection less than l/600 in wall studs. the brick will then support its own weight and there will be little, if any, flexural stresses in the brick due to lateral forces.
you simply need to check the axial stress in the brick. this is dealt with by the brick institute specifications.
you should also account through details to allow for the vertical expansion in the brick. the coefficient of thermal expansion for brick masonry is .00034 f (.00061 c) this gives quite a bit of expansion at 100 degrees f. if you restrain the top, there will be a large amount of stress induced from thermal forces

2009-09-07, 04:57 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	brick veneer height limitations brick veneer height limitations check your delfection limits. 51'-0 seems awfully high to be supported by wood. you may want to put in some relieving angles. check technical note @ in most codes, it is not allowed to vertically support masonry or concrete with wood. see uniform building code 97 section 2307. or check the new ibc 2000, sections 2304.12 and 2305.1.5. if the brick is supported by concrete foundations and the wood is only laterally supporting the masonry, then you need to keep the lateral deflection less than l/600 in wall studs. the brick will then support its own weight and there will be little, if any, flexural stresses in the brick due to lateral forces. you simply need to check the axial stress in the brick. this is dealt with by the brick institute specifications. you should also account through details to allow for the vertical expansion in the brick. the coefficient of thermal expansion for brick masonry is .00034 f (.00061 c) this gives quite a bit of expansion at 100 degrees f. if you restrain the top, there will be a large amount of stress induced from thermal forces __________________ 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]