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Expansion Joints in Buildings Technical Report No. 65 (1974) / Chapter Skim
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II. Recommendations
Pages 3-8

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From page 3...
... GENERAL 1. The structural analysis of a building should include a determination of the need for thermal expansion joints in view of the potential impact of temperature-produced dimensional changes on structural integrity and building serviceability.*
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From page 4...
... * A building should be considered to have a beam-and-column or slab-andcolumn structural frame even if intermittent interior shear walls or other stiffening elements are incorporated in the frame and even if the frame is supported on an above-grade reinforced concrete continuous perimeter base wall.
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From page 5...
... \ , , 1 1 1 1 10 20 30 40 50 60 DESIGN TEMPERATURE CHANGE (°F) Stee Anv Material 1 1 1 70 80 90 FIGURE 1 Maximum allowable building length without use of expansion joints for various design temperature changes.
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From page 6...
... SUGGESTED PROCEDURES FOR DESIGN OF EXPANSION JOINTS 2. The following guidelines are recommended as bases for expansion joint design and location: Expansion joints should extend over the entire height of the building from the top of the foundation footing (or perimeter basewall)
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From page 7...
... If the computed expansion joint width exceeds 2 inches, special consideration should be given to the materials and methods of joint construction to ensure that the joint itself will be able to withstand the distress caused by substantial movement at the joint. (Additional consideration should be given to architectural and structural details to ensure that the building will tolerate the inherent deformations without loss of serviceability.)
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From page 8...
... . The effects of temperature change on the performance of buildings supported on masonry walls should be examined for each type of masonry material or combination of materials likely to be used, and each type or combination of materials should be investigated with respect to construction details, connections of walls to horizontal and vertical components (roofs, floors,walls, and partitions at right angles)
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Key Terms

  • expansion joint
  • temperature change
  • design temperature
  • air conditioned
  • construction season

  • buildings heated
  • joint width
  • thermal expansion
  • structural frame
  • normal construction

  • joint design
  • effective length
  • building components
  • continuous exterior
  • building segments

  • empirical basis
  • temperature fluctuations
  • allowable length
  • building segment
  • buildings supported

  • lateral displacement
  • dimensional changes
  • run continuously
  • construction tolerances
  • special consideration

  • maximum spacing
  • differential movement
  • required joint
  • masonry walls
  • distress caused


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