ASCE 26-97 PDF Download

The ASCE 26-97 standard provides guidelines for the design and analysis of buried precast reinforced concrete box sections used for various purposes such as sewage conveyance, stormwater drainage, and tunnels. The standard outlines a design and analysis method that considers the interaction between the box sections and soil envelope, taking into account loads, pressure distributions, moment, thrust, and shear in the box section. Additionally, it includes a procedure for calculating the required reinforcement.

The design process outlined in the standard follows a limits state design procedure, which considers both strength and serviceability criteria. This approach aligns with the procedures outlined in Section 17 of the AASHTO Standard Specification for Highway Bridges. The design criteria cover various aspects, including flexure, thrust, and shear strengths, as well as considerations for handling and installation, fatigue limits, and crack width control.

It is important to note that the design of a one-cell precast reinforced concrete box section assumes that the specified design bedding and installation requirements will be met during construction. This standard will be beneficial for owners and owner engineers in the preparation of contract documents based on the direct design method.