Building expansion joints
Building expansion joints
(OP)
Hi I am looking for some general advice on expansion joints in steel frame buildings using precast or composite flooring. What are typical distances etc people use
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Building expansion joints
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RE: Building expansion joints
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If the second link doesn't quite work, you are looking to technical report #65 on expansion joints.
RE: Building expansion joints
Current national code CTE as it stands would be more or less the same (40 m exemption of need to include temperature effects in the analysis for the ordinary buildings) except that has a more complicated prescription for temperature loads (must be akin to eurocode, many new things in it are); so as of now, in the end, the strict view is that you are to include the temperature effects and see that the serviceability limits are respected, whatever the length between joints; if only because they may be adding to other deformations and then not meeting targets of sound behaviour. This becomes truly required if 40 m are not respected.
Note that in general the distance between structural (building) joints are just a device related to the obliged consideration or not of temperature effects in the analysis. So you can project a building of any size as long as you prove its wanted sound behaviour is respected. Think for example of long span bridges; temperature has then its own relevance.
I have seen thermal cracks on façades 15 m long and inner (thermal) cracks on 12 m long. I have also seen cracks in irregular buildings 51 m long. Yet other where the outer skin is jointed (prefab could be, perhaps more typically curtain-wall and inner masonry is mostly floating on the structure have no problems at far bigger dimensions, say, 80 m long.
CTE when speaking of supported -not load bearing- masonry also specifies shorter lengths of continuous masonry work as per the attached table. Vertically I think there are other restrictions.
RE: Building expansion joints
RE: Building expansion joints
RE: Building expansion joints