U.S. Army Corps of Engineers Design Standards 1

Lesson 3

Overview of Design Standards

U.S. Army Corps of Engineers Design Standards 2

Lesson Objectives

Upon conclusion, participants should be familiar with the inter-relationship among:

1. The current UFC 3-310-04,

2. The 2012 IBC,

3. ASCE 7-10,

4. Material standards referenced in the 2012 IBC.

U.S. Army Corps of Engineers Design Standards 3

UFC 3-310-04, 1 May 2013

Replaces UFC 3-310-04

1 MAY 2012

Direct reference to 2012 IBC, which references ASCE 7-10

Exceptions:

• Some military facilities will require higher standards

• Some host nations may require higher standards

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UFC 3-310-04 Contents

CHAPTER 1 - SEISMIC DESIGN FOR BUILDINGS

CHAPTER 2 - 2012 IBC MODIFICATIONS FOR SEISMIC DESIGN OF DoD BUILDINGS

CHAPTER 3 - ALTERNATE DESIGN PROCEDURE FOR RC IV STRUCTURES

CHAPTER 4 - DESIGN FOR ENHANCED PERFORMANCE OBJECTIVES: RC V

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UFC 3-310-04 Contents

APPENDIX A – REFERENCES

APPENDIX B - GUIDANCE FOR SEISMIC DESIGN OF NONSTRUCTURAL COMPONENTS

APPENDIX C - MECHANICAL AND ELECTRICAL COMPONENT CERTIFICATION

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UFC 3-310-04

UFC 3-310-04 adopts the 2012 IBC

• Lists modifications to the provisions of the 2012 IBC

• The 2012 IBC adopts by reference extensive portions of ASCE 7-10 UFC 3-310-04 modifies some sections in ASCE 7-10

2-1613 EARTHQUAKE LOADS

UFC Chapter IBC or ASCE 7 section number and title

U.S. Army Corps of Engineers Design Standards 7

Chapter 2: 2012 IBC Modifications for Seismic Design of DoD Buildings

An example section number in this chapter is 2-1603.1.5 or 2-13.1.2.

The first number, 2, refers to Chapter 2 of this UFC. 1603.1.5 refers to 2012 IBC Section 1603.1.5, and 13.1.2 refers to ASCE 7-10 Section 13.1.2.

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2012 IBC

Sets some basic requirements, but mostly cites structural design standards by reference.

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ASCE 7-10

3rd Printing Errata incorporated Supplement No.1

included New, expanded

seismic commentary included

ASCE 7-05 typeface and layout restored

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ASCE 7-10

Developed by ASCE-SEI using ANSI standard consensus process

Publication cycle varies (1988, 1993, 1995, 1998, 2002, 2005, 2010)

Chapter 23 includes listing of seismic design reference documents

Errata – go to www.seinstitute.org & click on publications

Next edition of ASCE 7 will be dated 2016

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ASCE 7-10 Seismic Contents

CHAPTER TITLE

11 Seismic Design Criteria

12 Seismic Design Requirements for Building Structures

13 Seismic Design Requirements for Nonstructural Components

14 Material Specific Design & Detailing

15 Nonbuilding Structures

16 Response History Procedures

17 Seismically Isolated Structures

18 Structures with Damping Systems

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ASCE 7-10 Seismic Contents

CHAPTER TITLE

19 Soil-Structure Interaction

20 Site Classification

21 Site-Specific Ground Motions

22 Maps

23 Reference Documents

APPENDIX TITLE

11 A Quality Assurance

11 B Existing Buildings

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Chapter 11 Seismic Design Criteria

11.1 General

11.2 Definitions

11.3 Symbols

11.4 Seismic Ground Motion Values

11.5 Importance Factor and Risk Category

11.6 Seismic Design Category (SDC)

11.7 Design Requirements for SDC A

11.8 Geologic Hazards & Geotechnical Investigation

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ASCE 7-10 Chapter 12 Seismic Design of Building Structures12.1 Design Basis

12.2 Structural Systems

12.3 Diaphragm Flexibility,

Configuration, &

Redundancy

12.4 Load Effects &

Combinations of Loads

12.5 Direction of Loading

12.6 Analysis Procedure

12.7 Modeling Criteria

12.8 ELF Method

12.9 Modal RS Method

12.10 Diaphragms, Chords

Collectors

12.11 Structural Walls (out-of-

plane) and Their

Anchorage

12.12 Drift and Deformation

12.13 Foundation Design

12.14 Simplified Alternate

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ASCE 7-10 Chapter 14 Material Specific Design and Detailing 14.1 – Steel

14.2 – Concrete

14.3 – Composite Steel and Concrete

14.4 – Masonry

14.5 – Wood DO NOT USE

2012 IBC does not adopt Chapter 14 by reference; it includes the same but updated information in its chapters dealing with the materials of construction

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2012 IBC Section 102.4.1: Conflicts

102.4.1 Conflicts. Where conflicts occur between provisions of this code and referenced codes and standards, the provisions of this code shall apply.

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2012 IBC Section 102.4.2: Provisions in Referenced Codes and Standards

102.4.2 Provisions in referenced codes and standards. Where the extent of the reference to a referenced code or standard includes subject matter that is within the scope of this code or the International Codes listed in Section 101.4, the provisions of this code or the International Codes listed in Section 101.4, as applicable, shall take precedence over the provisions in the referenced code or standard.

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Chapter 35 Referenced Standards

This chapter lists the standards that are referenced in various sections of this document. The standards are listed herein by the promulgating agency of the standard, the standard identification, the effective date and title, and the section or sections of this document that reference the standard. The application of the referenced standards shall be as specified in Section 102.4.

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Structural Steel

AISC 360-10 AISC 341-10

U.S. Army Corps of Engineers Design Standards 20

Structural Steel

Can ignore AISC 341 (Seismic Provisions) in Seismic Design Categories B, C if R = 3 is used

Seismic Provisions required for all other situations

• Special, Intermediate, Ordinary Moment Resisting Frames

• Special, Ordinary Concentrically Braced Frames

• Eccentrically Braced Frames

• Buckling-Restrained Braced Frames

• Steel Plate Shear Walls

• Composite Steel and Concrete Systems

U.S. Army Corps of Engineers Design Standards 21

Cold Formed Steel

U.S. Army Corps of Engineers Design Standards 22

Cold Formed Steel

Lateral design standard covers

• Diaphragms and walls sheathed with structural wood panels

• Walls sheathed with light gage steel sheet

• Walls braced with diagonal steel straps

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Seismic Requirements are primarily found in Chapter 21

Composite Steel and Concrete is covered in AISC 341

Structural Concrete

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Structural Concrete

Special, Intermediate, Ordinary moment resisting frames

Special, Ordinary shear walls (structural walls)

Special, Intermediate, Ordinary precast concrete shear walls

Special precast concrete moment frames

Provisions for concrete structure not designed as part of seismic force-resisting systems

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Masonry

TMS 402-11

ACI 530-11

ASCE 5-11

(MSJC Code)

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Masonry

5 types of masonry shear walls

• Special, Intermediate, Ordinary reinforced walls

• Detailed, Ordinary plain walls

Seismic provisions somewhat buried

Prestressed Shear Walls

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Wood

U.S. Army Corps of Engineers Design Standards 28

Wood Structures

Diaphragms and Shear Walls

Various sheathing types

Framing and configuration requirements

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Standards: Summary

UFC 3-310-04 cites 2012 IBC and ASCE 7-10 with modifications

2012 IBC cites ASCE 7-10

2012 IBC (and ASCE 7) cite and supplement material design standards:

• AISC 360-10, 341-10 for structural steel and composite steel/concrete

• AISI S100-07/S2-10, S110-07, 200-07, 210-07, 211-07, 212-07, 213-07/S1-10, S214-07, S230-07 for cold formed steel

• ACI 318-11 for concrete

• TMS 402-11 (MSJC) for masonry

• AF&PA NDS-2012 for wood

UFC 3-310-04 provides additional guidance

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Thank You!!

Any Remaining Questions?