ACI 334.3R-05 - Construction of Concrete Shells Using Inflated Forms

This report provides information on the construction of structural concrete shells using an inflated form. Major facets of the construction process are covered, including foundations, inflation, monitoring, and backup systems. Other aspects, such as the geometric variations of inflated forms, thickness of polyurethane foam, and mixture proportions for shotcrete, are also considered. 13 pp.

334.3R-05: Construction of Concrete Shells Using Inflated Forms - Table of Contents:

• General, p. 334.3R-2
  • Introduction
  • Scope
  • History
  • Methods
  • Definitions
  • Preconstruction
  • Work schedule
• Foundations, p. 334.3R-4
  • General
  • Concrete
  • Soil conditions
  • Reinforcement material
  • Placement of reinforcement
  • Placement of anchors
  • Concrete placement
  • Foundation dowels
  • Uplift prevention
• Inflated forms, p. 334.3R-6
  • General
  • Inflated form material and manufacturing
  • Field layout
  • Form protection
  • Initial stretching
  • Inflation
  • Construction tolerances
  • Air pressure maintenance
  • Collapse prevention
  • Miscellaneous connections
  • Fabric form repair
  • Polyurethane foam (when used)
  • Preparation
  • Foam application
  • Construction hazards
• Shotcrete dome, p. 334.3R-9
  • General
  • Reinforcement material and size
  • Clear spacing between bars
  • Splices
  • Cover
  • Preliminary reinforcement mat (premat)
  • Shell reinforcement
  • Preconstruction shotcrete tests
  • Shotcrete compression tests
  • Proportions and materials
  • Field practice
  • Nozzle operator qualifications
  • Shotcrete operation
  • Discharge time
  • Joints
  • Multi-pass technique
  • Curing
  • Shotcrete placement tolerance
  • Shotcrete damage
  • Completion
• References, p. 334.3R-13
  • Referenced standards and reports
  • Cited references