Abstract: This Digest explores the process by which building code requirements for new construction can be applied to existing buildings. Topics include the evaluation of design alternatives, the cost benefits of adhering to the code and the implications of modifying requirements.
Abstract: This digest describes various causes of vibration problems in buildings and outlines the principles that are important in controlling these problems. Some techniques for controlling vibrations are described in general terms and references are given to help designers find quantitative information.
Abstract: Fire alarm systems are required by law through building codes, fire codes and special acts or bylaws. The choice of a particular type of equipment to be used in a fire alarm system depends on the nature of the occupancy, the size of the building, the number of occupants and the level of protection desired. To be effective, a fire alarm system must be tailored to the building and the types of fire that could develop. The designer of the system must understand the functions and limitations of the equipment chosen to obtain maximum efficiency and safety.
Abstract: Although preserved wood frame foundation systems have been accepted for only a relatively short period of time, their use has increased steadily and now represents a significant portion of the market. Since the success of this system depends on the effectiveness of the preservative treatment, it is important that only wood that has the required preservative retention be used and that any portions affected by field cutting or drilling be treated with preservatives. The system's adequacy to resist both earth pressure loads and loads from the superstructure can only be assured by paying strict attention to details that have been developed to resist such forces. Aids are available for smaller buildings which simplify the selection of design details and these should be followed faithfully if the foundation is to perform as intended.