ACI SPEC-336.1-24: Construction of Drilled Piers—Specification

Description

This Specification addresses requirements for drilled pier construction. Drilled piers are sometimes called drilled shafts, drilled caissons, drilled piers with bells, drilled shafts with bells, or bored piles. This Specification includes: excavation; the use of liners and casing; drilling slurry and concrete free-fall placement methods; testing; reinforcement fabrication and placement; concrete properties and placement; quality control and quality assurance; and acceptance. The successful installation and performance of a drilled pier is fundamentally dependent on the means and methods of construction along with the effects of the site-specific subsurface conditions.

Keywords:

bored pile; caisson; casing, drilled caisson; drilled pier; drilled shaft; drilling fluid; excavation; foundation; free-fall; liner; obstruction; slurry.

Document Details

Author: ACI Committee 336

Publication Year: 2024

Pages: 16

ISBN: 9781641952781

Formats: Printed Document or Protected PDF/Web View

Table of Contents

PART 1—GENERAL, p. 2

1.1—Scope, p. 2

1.2—Interpretation, p. 2

1.3—Definitions, p. 2

1.4—Reference standards, p. 3

1.5—Submittals, p. 4

1.6—Delivery, storage, and handling, p. 5

1.7—Quality assurance, quality control, and acceptance of Work, p. 5

PART 2—PRODUCTS, p. 6

2.1—General, p. 6

2.2—Casing and liner, p. 6

2.3—Reinforcement, p. 6

2.4—Concrete, p. 7

2.5—Grout, p. 8

2.6—Slurry, p. 8

2.7—Tremie or concrete pipe, p. 8

2.8—Formwork, p. 8

PART 3—EXECUTION, p. 8

3.1—Tolerances, p. 8

3.2—Rock sockets, p. 9

3.3—Belled piers, p. 9

3.4—Installation, p. 9

NOTES TO SPECIFIER, p. 11

General notes, p. 11

Foreword to checklists, p. 11

Authored references, p. 12

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