Innovative Bridge Designs for Rapid Renewal Toolkit (2012) / Chapter Skim
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Pages 279-286
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From page 279... ...
277 C RECOMMENDED ABC DESIGN SPECIFICATIONS 5.14.6 PROVISIONS FOR DESIGN OF PREFABRICATED SYSTEMS FOR ACCELERATED BRIDGE CONSTRUCTION 5.14.6.1 General The design of most modular systems for rapid renewal follows traditional LRFD Design Specifi cations. The requirements specifi ed herein shall supplement the requirements of other sections of the LRFD Design Specifi cations for the design of prefabricated modular systems for rapid renewal.
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From page 280... ...
278 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT a variable thickness deck to permit correction of the deck profile due to effects of camber. Overlay could be considered as an alternative to address the effects of camber.
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From page 281... ...
279 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT 5.14.6.3.3 -- Load Factors and Combinations When camber leveling forces, CL, are considered and they increase the critical effect in the design of the member, the load factor in all Service Load Combinations shall be taken as specified for DC in Table 3.4.1.1-1. Where camber leveling forces act to reduce the critical effect being considered, the load factor shall be taken as 0.0.
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From page 282... ...
280 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT 5.14.6.4 Analysis LRFD Section 4.5 Mathematical Modeling provides general guidance for mathematical modeling of bridges. The following additional requirements are extended to apply to prefabricated concrete and steel composite modular systems: 1.
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From page 283... ...
281 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT 5.14.6.7 Prestressed Components Requirements of LRFD Section 5.9.4 -- Stress Limits for Concrete shall be modified as follows for modular systems: Minimum compressive strength at time of handling f ′cm should be specified on the plans. 5.9.4.1 -- For Temporary Stresses Before Losses -- Fully Prestressed Components 5.9.4.1.2 -- Tension Stresses Modify second bullet of Table 5.9.4.1.2-1 for "Other Than Segmentally Constructed Bridges": 1.
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From page 284... ...
282 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT 5.11.5.3.1 -- Lap Splices in Tension This section specifies a minimum of 12 in. length for lap splices in tension.
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From page 285... ...
283 INNOVATIVE BRIDGE DESIGNS FOR RAPID RENEWAL: ABC TOOLKIT 1. In interior lift points for composite modular system shall be considered an interior support.
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