DC10.5-24: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive and Stable Soils
This publication is a revision to the DC10.5-19 combined standard that includes the inclusion of stable soils as well as other additions. The intention of the publication is to provide licensed design professionals with soil parameters, internal forces and stiffness requirements that are used for design of ribbed and uniform-thickness post-tensioned foundations on expansive and stable soils.
Note: This publication contains an update to the Standards published in DC10.5-19: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive Soils
Publisher: PTI
Published: December 2024
Pages: 52; 8½ x 11 in.
Format: Soft cover
Table of Contents:
1.0 — SCOPE
2.0 — DEFINITIONS AND ABBREVIATIONS
2.1 — Definitions
2.2 — Abbreviations
3.0 — NOTATION
4.0 — STRUCTURAL ANALYSIS AND DESIGN
4.1 — General
4.1.1 — Overlapping rectangles
4.1.2 — Perimeter load
4.1.3 — Concentrated loads
4.1.4 — Loss of prestress
4.2 — Ribbed foundations
4.2.1 — Minimum slab thickness
4.2.2 — Ribs
4.2.3 — Minimum prestress force for ribbed foundations
4.2.4 — Soil-bearing pressure
4.3 — Uniform thickness foundations (UTFs)
4.3.1 — UTF conversion
4.3.2 — Minimum prestress force for UTFs
4.3.3 — Soil-bearing pressure
5.0 — FLEXURE
5.1 — Edge drop
5.1.1 — Long direction
5.1.2 — Short direction
5.1.3 — Design Moments
5.2 — Edge lift
5.2.1 — Long direction
5.2.2 —Short direction
5.2.3 — Design Moments
5.3 — Allowable stress
5.4 — Cracked sections
6.0 — SHEAR
6.1 — Applied concrete shear stress
6.1.1 — Ribbed foundations
6.1.2 — UTFs
6.2 — Edge drop
6.2.1 — Long direction
6.2.2 — Short direction
6.3 — Edge lift
6.3.1 — Long and short direction
6.4 — Allowable stress
7.0 — STIFFNESS
8.0 — GENERAL
8.1 — Soils
8.1.1 — Field investigation and laboratory testing
8.1.2 — Expansive soils
9.0 — SOIL PARAMETERS
9.1 — Edge moisture variation distance em
9.1.1 — Soil parameters
9.1.2 — Matrix suction compression index gh
9.1.3 — Modified unsaturated diffusion coefficient α′
9.1.4 — Weighted average of α′
9.1.5 — Determination of em
9.2 — Differential soil movement ym
9.2.1 — Determination of ym by computer methods
9.2.2 — Determination of ym by other methods
9.3 — Moisture barriers
9.3.1 — Vertical barriers
9.3.2 — Horizontal barriers
10.0 — MATERIALS
10.1 — Concrete
10.2 — Reinforcement
10.2.1 — Prestressed reinforcement
10.2.2 — Non-prestressed reinforcement
10.2.3 — Cover to reinforcement
10.3 — Anchors
10.4 — Durability
11.0— REFERENCES
11.1 — Referenced standards and reports
11.2 — Cited references
APPENDIX
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| Description | This publication is a revision to the DC10.5-19 combined standard that includes the inclusion of stable soils as well as other additions. The intention of the publication is to provide licensed design professionals with soil parameters, internal forces and stiffness requirements that are used for design of ribbed and uniform-thickness post-tensioned foundations on expansive and stable soils. Note: This publication contains an update to the Standards published in DC10.5-19: Standard Requirements for Design and Analysis of Shallow Post-Tensioned Concrete Foundations on Expansive Soils Publisher: PTI Published: December 2024 Pages: 52; 8½ x 11 in. Format: Soft cover Table of Contents: 1.0 — SCOPE 2.0 — DEFINITIONS AND ABBREVIATIONS 2.1 — Definitions 2.2 — Abbreviations 3.0 — NOTATION 4.0 — STRUCTURAL ANALYSIS AND DESIGN 4.1 — General 4.1.1 — Overlapping rectangles 4.1.2 — Perimeter load 4.1.3 — Concentrated loads 4.1.4 — Loss of prestress 4.2 — Ribbed foundations 4.2.1 — Minimum slab thickness 4.2.2 — Ribs 4.2.3 — Minimum prestress force for ribbed foundations 4.2.4 — Soil-bearing pressure 4.3 — Uniform thickness foundations (UTFs) 4.3.1 — UTF conversion 4.3.2 — Minimum prestress force for UTFs 4.3.3 — Soil-bearing pressure 5.0 — FLEXURE 5.1 — Edge drop 5.1.1 — Long direction 5.1.2 — Short direction 5.1.3 — Design Moments 5.2 — Edge lift 5.2.1 — Long direction 5.2.2 —Short direction 5.2.3 — Design Moments 5.3 — Allowable stress 5.4 — Cracked sections 6.0 — SHEAR 6.1 — Applied concrete shear stress 6.1.1 — Ribbed foundations 6.1.2 — UTFs 6.2 — Edge drop 6.2.1 — Long direction 6.2.2 — Short direction 6.3 — Edge lift 6.3.1 — Long and short direction 6.4 — Allowable stress 7.0 — STIFFNESS 8.0 — GENERAL 8.1 — Soils 8.1.1 — Field investigation and laboratory testing 8.1.2 — Expansive soils 9.0 — SOIL PARAMETERS 9.1 — Edge moisture variation distance em 9.1.1 — Soil parameters 9.1.2 — Matrix suction compression index gh 9.1.3 — Modified unsaturated diffusion coefficient α′ 9.1.4 — Weighted average of α′ 9.1.5 — Determination of em 9.2 — Differential soil movement ym 9.2.1 — Determination of ym by computer methods 9.2.2 — Determination of ym by other methods 9.3 — Moisture barriers 9.3.1 — Vertical barriers 9.3.2 — Horizontal barriers 10.0 — MATERIALS 10.1 — Concrete 10.2 — Reinforcement 10.2.1 — Prestressed reinforcement 10.2.2 — Non-prestressed reinforcement 10.2.3 — Cover to reinforcement 10.3 — Anchors 10.4 — Durability 11.0— REFERENCES 11.1 — Referenced standards and reports 11.2 — Cited references APPENDIX |
