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ASCE 7-05 SNOW LOADS

Snow Loads: guide to the Snow Load Provisions of ASCE 7-05

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Organization: ASCE
Publication Date: 1 January 2007
Status: inactive
Page Count: 174
scope:

Introduction

Roof snow loading must be considered for all states in the United States, with the exception of Florida, which has a mapped ground snow load of zero. Snow is the controlling roof load, over wind or roof live load, in roughly half of the states. Specifically, when the ground snow load is 20 lb/ft2 or greater, snow loading typically controls for at least some roof structural components.

Snow loading is a frequent and costly cause of structural-performance problems, including collapse. For example, the March 1993 East Coast storm, which cost an estimated $1.75 billion, is one of the fifteen worst natural catastrophes in the United States in terms of insurance claims paid. As shown in Table I-1, this 20-state storm, also called the "Blizzard of the Century," was more costly than the Oakland Hills fire and Hurricanes Fran and Iniki, as well as the Loma Prieta earthquake, with $960 million in estimated insured losses. Although the winter of 1992-1993 was a record-setting season in terms of losses due to snow, a large insurer reports that the following winter (1993-1994) also resulted in substantial losses at a total cost of about $100 million. Hence, snow loading and snow load provisions are something with which structural engineers involved in building design need to be familiar.

Document History

January 1, 2017
Snow Loads: guide to the Snow Load Provisions of ASCE 7-16
Preface This guide provides practicing structural engineers with a detailed description of the snow load provisions of Standard ASCE/SEI 7-16, Minimum Design Loads and Associated Criteria for...
January 1, 2010
Snow Loads: guide to the Snow Load Provisions of ASCE 7-10
Preface This guide provides practicing structural engineers with a detailed description of the snow load provisions of ASCE/SEI Standard 7-10, Minimum Design Loads for Buildings and Other...
ASCE 7-05 SNOW LOADS
January 1, 2007
Snow Loads: guide to the Snow Load Provisions of ASCE 7-05
Introduction Roof snow loading must be considered for all states in the United States, with the exception of Florida, which has a mapped ground snow load of zero. Snow is the controlling roof load,...
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