Determining Movement in Expansion Joint
Determining Movement in Expansion Joint
(OP)
I am interested in detemining how much two slabs are going to seperate in an Expansion Joint throughout the life of the project so that I can provide a waterstop that can handle the required stretch.
I had a few questions:
1. Would this be a Thermal Expansion problem, where I could use a thermal expansion or contraction of 5.5x10-6 in/in/deg F?
2. Do I need to obtain the tempererature for a specifc site, or can I use a conservative value for design?
Appreciate your guidance
I had a few questions:
1. Would this be a Thermal Expansion problem, where I could use a thermal expansion or contraction of 5.5x10-6 in/in/deg F?
2. Do I need to obtain the tempererature for a specifc site, or can I use a conservative value for design?
Appreciate your guidance






RE: Determining Movement in Expansion Joint
RE: Determining Movement in Expansion Joint
RE: Determining Movement in Expansion Joint
RE: Determining Movement in Expansion Joint
Appreciate your help.
RE: Determining Movement in Expansion Joint
One thing to note, the wider the the expansion joint, the better the filler will behave. Take for example a 0.5" joint that you calculate will want to move 0.5". That is a 100% increase/decrease. If you can make that joint 1.0", the concrete will still want to move 0.5" but the increase/decrease is now only 50%.
I also agree with civilperson's first post. This is a common practice as the contractor can use the previously poured slabs as their forms. The slabs may be poured 1, 3, 5, 2, 4; 1, 3, 2, 5, 4; etc.
RE: Determining Movement in Expansion Joint
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You can pick one of the new listings and look at the Table of Contents to see the topics covered.
Good luck!