Bridge girder fa fabrication inspection in the plant is one of the most important, and precise, parts of the bridge construction process.
Highway Guardrail Design in Alberta
Highway guardrail serves an important purpose in the safety of vehicular and pedestrian users alike. Although it may seem like a mundane part of the system, the design of highway guardrail is just as scientific and engineered to exacting standards as the rest of the highway. This article will summarize the design process for highway […]
Bridge Sized Culvert Replacement in Alberta
According to my search of Alberta Transportation’s Transportation Infrastructure Management System (TIMS), there are 11,861 bridge sized culvert structures across the province of Alberta. Of that, 3,796 are managed by Alberta Transportation. The rest are within Counties, M.D.’s and other municipalities. That’s alot of structures, and management of this asset is not a small task. […]
Guide to Pedestrian Bridges
A bridge is a great way to showcase your facility or business. Whether you need the simplest possible structure to cross your stream or roadway, or want to provide something your customers or clients will notice, there is a pedestrian bridge out there that’s right for you. But the options can be dizzying. Pedestrian bridges […]
How to Design a Pedestrian Bridge
Pedestrian bridges can be some of the most aesthetic structures out there, and are often the centerpiece of a development, park or golf course. But their design has some special considerations and quirks that are unique to them, hence some specific knowledge and experience is important. In this article I will walk through the six […]
The Steps of a Geotechnical Evaluation
A geotechnical evaluation is an engineering site assessment that determines what the foundation conditions are and recommends options for foundation design. It is performed by a geotechnical engineer, and is required for most engineered structures including buildings, bridges, roads, and towers. The four main components of a geotechnical evaluation are: Planning Field Work Laboratory Analysis […]
How to Determine the Atterberg Limits
The Atterberg limits, created by swedish chemist Albert Atterberg, are the moisture content, in percent, at which the soil changes state. They are defined as: Plastic Limit (solid to plastic) Liquid Limit (plastic to liquid) Some textbooks often refer to a third Atterberg limit, the “shrinkage limit” which defines the boundary between “solid” and a […]
Types of Pedestrian Bridges
A pedestrian bridge is often one of the most visible parts of a development, showcasing the park or trail and giving it a distinctive personality. Therefore, you need to know what the types of pedestrian bridges are so you can plan for a bridge that you’re proud of and will serve the needs of its […]
The 7 Types of Culverts
Culverts are highly efficient structures that move water and people underneath a road. However, there isn’t a one-size-fits-all culvert type that meets all design considerations. To that end, let’s explore the different types of culverts that can be considered for a site: Corrugated Steel Pipe (CSP) Structural Plate CSP Open bottom CSP Concrete Pipe Concrete […]
Types of Standard Bridges in Alberta
Standard bridges are an excellent option for small sites where it is desirable to save money. A standard bridge is a bridge of pre-designed components, for example, abutments, piers, and girders. Alberta Transportation currently maintains three main types of standard bridges (defined by their girder type) with variations for abutments and piers. The three types […]