There are numerous resources for good detail work in bridges, including bridge design treatises and technical manuals. However, these sources are often dated, and their advice is usually incidental. This book is intended for those active in the bridge engineering industry, including contractors, consultants, and Bridge Detailing. It also serves as a reference for trainee engineers, technicians, and incorporated engineers. It provides guidance on the relative merits of various details in bridge design, from feasibility to conceptual design.
The book is organized by structural type, beginning with Chapter 1.1. This chapter describes the basic parts of a highway structure, and indicates the relevant details. Subsequent chapters focus on specific types of bridges and structural forms. Certain details are common to many types of structures, and these are listed at the beginning of each chapter. Those details are also illustrated in Chapters three and four. Reference numbers on illustrations indicate the location of the details in the guide.
The book’s scope is limited to new and existing structures. Although the book addresses the details for new structures and strengthens existing structures, a majority of the details are for bridges that span more than 60 m. This includes details for bridges with steel girders and concrete slabs. The guide doesn’t address foundation details, which are not typically included in a Bridge Detailing design manual. The guide also addresses issues related to buildability.
Modern materials and methods provide many design options for lighter and stronger structures. It is vital for designers to acknowledge the importance of plant and labour costs in a construction project. Get in touch with Dowco to get Rebar Detailing. The reduction of material in individual elements does not necessarily translate into economy in the overall design. Designers should rationalise details and seek dimensional standardisation in order to reuse items and parts. Joints should allow for temperature and flexural movements. This knowledge helps them meet these goals.
The three basic types of bridges are girder, span, and arch. Each type has its pros and cons, and some differ from others. Listed below are some common types of bridges. The most important aspects are girder strength, beam weight, and cross-section. To get a better understanding of each type of bridge, you can visit the Bridge Terminology page. And remember, drawings are not to scale. All of these things are important for any type of construction, whether it’s a pedestrian bridge, a railroad bridge, or a large highway.
Pavement growth puts tremendous pressure on the backwalls of bridges. In fact, a bridge can lose its structural integrity if it can’t resist the growth and compression of pavement. Consequently, the backwalls can become cracked and rest against the beam ends. Pavement relief joints prevent this by absorbing some of this pressure. They can also be a way to reduce displacement and other problems. But what about the pavement itself?
AASHTO’s design service manager oversees the work of the department, which is made up of three sections: a Standards Section and three Design Sections. Its website contains a list of the responsibilities of the Bridge Detailing Design Service for the Phoenix metro area. The guidelines and practices in the directory are updated to reflect the latest AASHTO LRFD Specifications. The manuals, however, contain older sections. You should read through these documents carefully to ensure they are still appropriate for your project.
Another common problem with circular decorative details is that they have the same inherent weakness as square corners. Standard timber is the easiest to form into chamfers, but larger chamfers can require larger-radius corners on reinforcement. In most cases, chamfers are detailed by a general note, which appears on the general notes drawing and is repeated on all concrete detail drawings. You can get CLT detailing now. In this situation, the general note is used to indicate the size of the chamfer and the size of the concrete reinforcement.
Waterproofing systems need to be properly installed, as the water can freeze and become trapped in joints. When the water freezes, it can cause significant damage to the surfacing, as well as exploit weaknesses in the waterproofing system. The proper waterproofing system will incorporate subsurface drainage into its design. In addition, the discharge pipes should be situated away from structural members to avoid damage to them. Aside from providing subsurface drainage, the waterproofing system will also benefit from the installation of a subsurface drain cover.
