Emendas

AFT
6181
6182
6183 CHAPTER L
6184
6185 DESIGN FOR SERVICEABILITY
6186
6187
6188
6189
6190
6191 This chapter addresses serviceability performance design requirements.
6192
6193 L1. GENERAL PROVISIONS
6194
6195 Serviceability is a state in which the function of a building, its appearance,
6196 maintainability, durability, and comfort of its occupants are preserved under
6197 normal usage. Limiting values of structural behavior for serviceability (e.g.,
6198 maximum deflections, accelerations) shall be chosen with due regard to the
6199 intended function of the structure. Serviceability shall be evaluated using
6200 appropriate load combinations for the appropriate serviceability limit states
6201 identified.
6202
6203 The chapter is organized as follows:
6204
6205 L1 General Provisions
6206 L2 Camber
6207 L3 Deflections
6208 L4 Drift
6209 L5 Vibration
6210 L6 Wind-Induced Motion
6211 L7 Expansion and Contraction
6212 L8 Connection Slip
6213
6214 User Note: Serviceability limit states, service loads and appropriate load
6215 combinations for serviceability requirements can be found in ASCE 7-02,
6216 Appendix B and Commentary to Appendix B. The performance require6217 ments for serviceability in this chapter are consistent with those requireAmerican
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DRAFT
6218 ments. Service loads, as stipulated herein, are those that act on the structure
6219 at an arbitrary point in time and are not usually taken as the nominal loads.
6220
6221 L2. CAMBER
6222
6223 Where camber is used to achieve proper position and location of the
6224 structure, the magnitude, direction, and location of camber shall be specified
6225 in the structural drawings.
6226
6227 User Note: Camber recommendations are provided in the Code of Standard
6228 Practice for Steel Buildings and Bridges.
6229
6230 L3. DEFLECTIONS
6231
6232 Deflections in structural members and structural systems under appropriate
6233 service load combinations shall not impair