336.3R-14 Report on Design and Construction of Drilled Piers

336.3R-14 Report on Design and Construction of Drilled Piers

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Description

This report covers design and construction of 30 in. (760 mm) diameter or larger foundation piers constructed by excavation of a hole in a subgrade that is later filled with concrete. The 30 in.(760 mm) diameter boundary is an arbitrary size; smaller-diameter drilled piers can be designed and installed in accordance with ACI 543R. Although determination of overall pier size and concrete section design are two basic drilled pier design procedures, emphasis is focused on the determination of overall pier size, which is affected by the interaction between subgrade and pier. Because pier capacity is significantly affected by construction means and methods, the licensed design professional should understand these limitations. Construction methods described include excavation, casing, reinforcing steel installation, and concrete placement.Acceptance criteria and recommended procedures for construction, engineering, and evaluation are presented.

Keywords: bearing capacity; caisson; casing; excavation; foundation; geotechnical engineering; lateral pressure; lining; slurry; tremie.

 

Document Details

Author: ACI Committee 336

Publication Year: 2014

Pages: 30.00

ISBN: 9780870319143

Categories: Foundations

Formats: PDF, ePub, or Kindle

Table of Contents

CHAPTER 1—INTRODUCTION AND SCOPE

1.1- Introduction

1.2- Scope

CHAPTER 2- NOTATION AND DEFINITIONS,

2.1- Notation

2.2- Definitions

CHAPTER 3- GENERAL CONSIDERATIONS

3.1- General

3.2- The structural and geotechnical teams

3.3- Factors to consider

3.4- Pier types

3.5- Geotechnical considerations

CHAPTER 4- DESIGN

4.1- Loads

4.2- Loading conditions

4.3- Vertically loaded piers

4.4- Laterally loaded piers

4.5- Piers socketed in rock

4.6- Strength design of piers

4.7 -Pier configuration

CHAPTER 5- CONSTRUCTION MEANS AND METHODS

5.1- Excavation and casing

5.2- Placing reinforcement

5.3- Dewatering, concreting, and removal of casing

5.4- Slurry displacemet method

5.5- Safety

CHAPTER 6-CONSTRUCTION ENGINEERING AND TESTING

6.1- Scope

6.2- Geotechnical field representative

6.3- Preconstruction activities

6.4- Construction geotechnical engineering procedures

6.5- Concrete placement

6.6- Post-construction assessment

6.7- Reports

6.8- Criteria for acceptance

6.9 -Corrective measure

CHAPTER 7-REFERENCES

Authored documents

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