Eighteenth Buchanan Lecture

California Prestressing Manual

A large percentage of the bridges built in California are prestressed, post-tensioned type structures. As a bridge engineer working for the Divisions of Structure Construction, you should understand the construction principles relating to prestressed, post-tensioned bridge construction.
This Prestress Manual has been compiled to provide the field engineer with the necessary information and the background to perform three basic duties:
1. Check the contractor’s working drawings.
2. Provide thorough and complete inspection during the construction of the bridge with respect to the prestressing operation.
3. Understand and enforce Section 50 titled “Prestressing Concrete” of the Standard Specifications and any pertinent references.
The information included herein is to be considered as both a reference and guideline for structure representatives and assistant structure representatives. This manual should be reviewed both prior to working drawing review and during the prestressing operation. This manual should be available to the field engineer during the post-tensioning operation.
This manual, along with good communication between the structure representative, Structure Design, Materials Engineering and Testing Services (METS), and the contractor, will provide a finished product consisting of sound structural integrity with a minimal amount of construction related problems.

DESIGN OF ALL-BOLTED EXTENDED DOUBLE ANGLE, SINGLE ANGLE, AND TEE SHEAR CONNECTIONS

This report presents a methodology for the design of all-bolted extended double angle, single angle, and tee shear connections. The report covers only the design of extended connections that involve beams and girders, but the principles set forth can be applied to connections to columns as well. Current steel connection design methodologies do not have standards for the design of extended connections which do not require that the beam be coped to allow clearance for the girder flange. Coping is an expensive and time consuming process which fabricators like to avoid if at all possible. Extended connections are a practical way to avoid coping. Using basic mechanics and code specific equations, a practical design for all-bolted extended shear connections can be derived. The derived methodology is used to formulate design tables that simplify the process. This report includes examples of how to use the design tables to design allbolted extended connections. The tables include design resistances for a wide range of angle and tee materials and bolts diameters, as well as different connection types.

SCI P313: Single storey steel framed buildings in fire boundary conditions

Building regulations require that external walls of single storey buildings that are close to the site boundaries should have fire resistance, to at least part of the walls. Any structure that provides support to such walls also has to have fire resistance. This publication provides, in addition to UK building regulations, design recommendations and guidance for single storey buildings for design in fire situations. Based on earlier research and study, it shows that fire protection to the roof structure, which would be expensive to provide, is not necessary, provided that recommendations on column base design are followed. The advice and recommendations cover single and multi-bay portal frames, monopitch portal frames, gable frames and frames with trussed roofs. The background to the recommendations is given and the mathematical models are explained.

Floor loading in warehouses: a review

Lack of fit in steel structures

BIM Handbook: A Guide to Building Information Modeling for Owners, Managers, Designer

Applied Mechanics for Engineers