Chapter 1
GENERAL
1.1
SCOPE
This standard provides minimum load requirements for the design
of buildings and other structures that are subject to building code
requirements. Loads and appropriate load combinations, which
have been developed to be used together, are set forth for strength
design and allowable stress design. For design strengths and al-
lowable stress limits, design specifications for conventional struc-
tural materials used in buildings and modifications contained in
this standard shall be followed.
1.2
DEFINITIONS
The following definitions apply to the provisions of the entire
standard.
ALLOWABLE STRESS DESIGN:
A method of proportion-
ing structural members such that elastically computed stresses
produced in the members by nominal loads do not exceed speci-
fied allowable stresses (also called “working stress design”).
AUTHORITY HAVING JURISDICTION:
The organiza-
tion, political subdivision, office, or individual charged with the
responsibility of administering and enforcing the provisions of
this standard.
BUILDINGS:
Structures, usually enclosed by walls and a
roof, constructed to provide support or shelter for an intended
occupancy.
DESIGN STRENGTH:
The product of the nominal strength
and a resistance factor.
ESSENTIAL FACILITIES:
Buildings and other structures
that are intended to remain operational in the event of extreme
environmental loading from wind, snow, or earthquakes.
FACTORED LOAD:
The product of the nominal load and a
load factor.
HIGHLY TOXIC SUBSTANCE:
As defined in 29 CFR
1910.1200 Appendix A with Amendments as of February 1, 2000.
LIMITSTATE:
Aconditionbeyondwhichastructureormem-
ber becomes unfit for service and is judged either to be no longer
useful for its intended function (serviceability limit state) or to be
unsafe (strength limit state).
LOAD EFFECTS:
Forces and deformations produced in
structural members by the applied loads.
LOAD FACTOR:
A factor that accounts for deviations of the
actual load from the nominal load, for uncertainties in the analysis
that transforms the load into a load effect, and for the probability
that more than one extreme load will occur simultaneously.
LOADS:
Forces or other actions that result from the weight of
all building materials, occupants and their possessions, environ-
mental effects, differential movement, and restrained dimensional
changes. Permanent loads are those loads in which variations over
time are rare or of small magnitude. All other loads are variable
loads (see also “nominal loads”).
NOMINAL LOADS:
The magnitudes of the loads specified
in this standard for dead, live, soil, wind, snow, rain, flood, and
earthquake.
NOMINALSTRENGTH:
Thecapacityofastructureormem-
ber to resist the effects of loads, as determined by computations
using specified material strengths and dimensions and formulas
derived from accepted principles of structural mechanics or by
field tests or laboratory tests of scaled models, allowing for mod-
eling effects and differences between laboratory and field condi-
tions.
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- Fall '08
- Shen
- Structural Engineering, occupancy category, Other Structures, explosive substances
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