Snow Loads : Guide to the Snow Load Provisions of ASCE 7-22.

Format:

Book

Author/Creator:

O'Rourke, Michael.

Series:

ASCE Press Series

Language:

English

Subjects (All):

Snow loads.

Structural dynamics.

Structural engineering--Standards--United States.

Structural engineering.

Building--Cold weather conditions--Standards--United States.

Building.

Building, Stormproof--Standards--United States.

Building, Stormproof.

Physical Description:

1 online resource (199 pages)

Edition:

1st ed.

Place of Publication:

Reston : American Society of Civil Engineers, 2023.

Summary:

Michael O'Rourke provides a detailed and authoritative interpretation of the snow load provisions in Chapter 7 of Standard ASCE/SEI 7-22.

Contents:

Intro

Snow Loads

Contents

Chapter 1:

References

Chapter 2:

2.1 The Maps: Influence of Latitude, Elevation, and Coastlines

2.2 The Maps: Site-Specific Case Studies

2.3 State Tables

2.4 Exceptions and Clarifications

Example G2-1. Ground Snow Loads

Problem

Solution

Example G2-2. Exemptions

Chapter 3:

3.1 Measured Conversion Factors

3.2 Flat Roof Snow Load (pf)

3.3 Exposure Factor (Ce)

3.4 Thermal Factor (Ct)

3.5 Minimum Snow Loads for Low-Sloped Roofs

3.6 Snow Load for Near-Ground Surfaces

Example G3-1. Roof Exposure

Example G3-2. Thermal Factor

Chapter 4:

4.1 Snow Sliding

4.2 Air-Supported Structures

4.3 Overall Comparison with Observations

Example G4-1. Uniform Roof Snow Load, Monoslope Roof (1 on 12)

Example G4-2. Uniform Roof Snow Load, Monoslope Roof (4 on 12)

Example G4-3. Uniform Roof Snow Load, Wide Gable Roof

Chapter 5:

5.1 Continuous-Beam Systems

5.2 Other Structural Systems

Example G5-1. Uniform and Partial Snow Loads, Monoslope Roof with Overhang

Purlins

Roof Trusses

Example G5-2. Partial Snow Load, Continuous Purlins in Gable Roof (1 on 12)

Example G5-3. Partial Snow Load, Cantilevered Roof Girder System

Chapter 6:

6.1 Hip and Gable Roofs

6.2 Curved Roofs

6.2.1 Balanced Loads

6.2.2 Unbalanced Loads

6.3 Sawtooth-Type Roofs

6.4 Domes

Example G6-1. Unbalanced Snow Load, Narrow Gable Roof

Example G6-2. Unbalanced Snow Load, Wide-Gable Roof

Example G6-3. Unbalanced Snow Load, Asymmetric Gable Roof

Problem.

Solution

Example G6-4. Balanced and Unbalanced Snow Load, Curved Roof

Balanced Load

Unbalanced Load

Example G6-5. Unbalanced Snow Load, Sawtooth Roof

Unbalanced Loads

Reference

Chapter 7:

7.1 Leeward Drift

7.1.1 New Approach

7.1.2 Drift Height Modifying Factor

7.2 Windward Drift

7.3 Adjacent Roofs

7.4 Roof Steps in Series

Example G7-1. Roof Step Drift Load

Leeward Drift

Windward Drift

Example G7-2. Roof Step Drift, Limited Height

Example G7-3. Roof Step Drift, Adjacent Structure

Example G7-4. Roof Steps in Series

Example G7-5. Roof Step Leeward Drift Controls

Example G7-6. Roof Step Windward Drift Controls

Chapter 8:

8.1 Snow Capture Walls

Example G8-1. Parapet Wall Drift

Drift Load

Example G8-2. Rooftop Unit Drift

Example G8-3. Elimination of Rooftop Unit Drift

Example G8-4. Parapet Wall Revised

Example G8-5. Snow Capture Wall

Chapter 9:

9.1 Adjacent Roofs

9.2 Separated Roofs

Example G9-1. Sliding Snow Load, Residential Gable Roof (4 on 12)

Flat Roof and Balanced Loads

Sliding Load

Example G9-2. Sliding Snow Load, Commercial Gable Roof (1 on 12)

Example G9-3. Sliding Load, Separated Roof

Chapter 10:

Example G10-1. Uniform Design Snow Load, Monoslope Roof (1/4 on 12)

Example G10-2. Uniform Design Snow Load, Gable Roof (1/4 on 12)

Chapter 11:.

11.1 Ponding Instability

11.2 Existing Roofs

Example G11-1. Susceptible Bays Purlin-Parallel Geometry

Example G11-2. Susceptible Bays Purlin-Perpendicular Geometry

Chapter 12:

12.1 Floor-Level Snow Loads

12.2 Snow Load on Piping and Cable Trays

Example G12-1. Isolated Cable Tray

Example G12-2. Adjacent Cable Trays

Chapter 13:

13.1 General Recommendations

13.2 Specific Recommendations

13.3 Balanced Load Considerations

13.4 Sliding Load Considerations

13.5 Drift Load Considerations

Chapter 14:

14.1 Design Example 1

14.1.1 General Considerations

14.1.2 Unheated Storage Building

14.1.2.1 Unbalanced Loading

14.1.3 Heated Storage Building

14.1.3.1 Unbalanced Loading

14.1.3.2 Roof Step Drifts

14.2 Design Example 2

14.2.1 Balanced Load

14.2.1.1 Minimum Loading

14.2.1.2 Rain-on-Snow Surcharge

14.2.2 Unbalanced Loads

14.3 Design Example 3

14.3.1 Site A (pg&amp

thinsp

&amp

equals

64 lb/ft2)

14.3.2 Site B (pg&amp

10 lb/ft2)

Chapter 15:

Index

About the Author.

Notes:

Description based on publisher supplied metadata and other sources.

Other Format:

Print version: O'Rourke, Michael Snow Loads

ISBN:

1-5231-5556-6

0-7844-8483-X