TCRP report 155 provides guidelines and descriptions for the design of various common types of light rail transit (LRT) track. The track structure types include ballasted track, direct fixation ("ballastless") track, and embedded track. The report considers the characteristics and interfaces of vehicle wheels and rail, tracks and wheel gauges, rail sections, alignments, speeds, and track moduli. The report includes chapters on vehicles, alignment, track structures, track components, special track work, aerial structures/bridges, corrosion control, noise and vibration, signals, traction power, and the integration of LRT track into urban streets.

Tunnels represent a significant financial investment with challenging design, construction, and operational issues. Tunnels that are not adequately maintained usually require more costly and extensive repairs. To help safeguard tunnel users and to ensure reliable levels of service, the FHWA developed the National Tunnel Inspection Standards (NTIS), the Tunnel Operations Maintenance Inspection and Evaluation (TOMIE) Manual, and the Specifications for National Tunnel Inventory (SNTI). In accordance with the NTIS, this Manual describes methods for improving the safety and performance of roadway tunnel operation, maintenance, inspection, and evaluation programs.

"The increased use of underground space for transportation systems and the increasing complexity and constraints of constructing and maintaining above ground transportation infrastructure have prompted the need to develop this technical manual. This FHWA manual is intended to be a single-source technical manual providing guidelines for planning, design, construction and rehabilitation of road tunnels, and encompasses various types of road tunnels"--P. ix.

The Fire and Life Safety Inspection Manual, Ninth Edition is the most up-to-date inspection reference manual for those interested in fire protection, fire safety, and life safety inspections. It provides step-by-step guidance through the complete fire inspection process, with special emphasis on life safety considerations. This text identifies dangerous and hazardous conditions that could be encountered in a structure and spells out the chief areas the inspector should be focused on during an inspection. Inspectors should use the Fire and Life Safety Inspection Manual, Ninth Edition to identify existing deficiencies, imminently dangerous conditions, or a fault in a procedure or protocol that may result in a fire. Six new chapters have been added to make sure fire inspectors have the knowledge and resources available to effectively conduct all types of fire inspections. These new chapters include: - Chapter 5 Certification and Training for Inspectors - Chapter 6 Green Technologies and the Inspector - Chapter 24 Commissioning Process for Fire Protection Systems - Chapter 25 Accessibility Provisions - Chapter 26 Grass, Brush, and Forest Fire Hazards - Chapter 27 Tunnels More than three hundred codes and standards form the basis for the criteria, recommendations, and requirements that are found throughout the text. Early chapters provide important background information, while the second half presents inspection guidelines for specific fire protection systems and occupancies that are based on the Life Safety Code(R). This text is packaged with an access code that provides free access to easy-to-follow checklists to help you remember and record every important detail. Whether you're just starting your career as a fire inspector or ready to brush up on the basics, the Fire and Life Safety Inspection Manual, Ninth Edition has the reliable inspection advice you need.

Your timely source for more cost-effective and less disruptive solutions to your underground infrastructure needs. The North American Tunneling Conference is the premier biennial tunneling event for North America, bringing together the brightest, most resourceful, and innovative minds in the tunneling industry. It underscores the important role that the industry plays in the development of underground spaces, transportation and conveyance systems, and other forms of sustainable underground infrastructure. With every conference, the number of attendees and breadth of topics grow. The authors—experts and leaders in the industry—share the latest case histories, expertise, lessons learned, and real-world applications from around the globe. Crafted from a collection of 126 papers presented at the conference, this book takes you deep inside the projects. It includes challenging design issues, fresh approaches on performance, future projects, and industry trends as well as ground movement and support, structure analysis, risk and cost management, rock tunnels, caverns and shafts, TBM technology, and water and wastewater conveyance.