11/22/2017
Interior Pilasters
Geofoam
• Foam blocks • Reduces:
• Rectangular support • Resembles flat column
▫ Surcharge on foundation walls ▫ Hydrostatic Pressure • Usually places 6 inches away from foundation wall • Allows constriction to continue around foundation wall
• Attached to the face of the wall • Popular in Greek and Roman inspired architecture • Types ▫ Architecturally aesthetic
Counterfort
Dynamic Compaction
• Act as lateral brace to retaining walls • Allows slim walls ▫ Reduction in width • Reduces cost of retention wall
• Compaction: ▫ Change in porosity of soil by squeezing the mineral grains together by weight or mechanical means • Deep Compaction uses: ▫ Large weight ▫ Dropped from certain height ▫ Impact compacts soil layer
Helical Ties
• Support or resist loads ▫ Tension ▫ Compression
Steel
• Equipment ranges from excavators to lightweight handheld equipment • End Bearing foundation elements • Torsion used to install ties • Minimal displacement of soil
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