Heat detectors respond to the thermal energy signature from a fire and are generally located on or near the ceiling. They respond when the detecting element reaches either a predetermined fixed temperature or a specified rate of temperature rise occurs. Knowing the difference between types of detectors is very important. Periodic tests must be made […]
Smoke detectors sense the presence of smoke particles. In order for a smoke detector to sense these particles, smoke must travel from the point of origin to the detector. When evaluating a particular building or location for detector layout, likely fire locations should first be determined, and paths of smoke travel from each of these
Two electrons together or two protons together represent “like” charges. Like charges resist being brought together and instead move away from each other. This movement is called repelling. This is the first law of electrostatic charges: Like charges repel each other . According to the second law of electrostatic charges: Unlike charges attract each other.
Runway edge lighting systems outline the edge of runways during nighttime and reduced visibility conditions. Runway edge lights are classified by intensity, high intensity (HIRL), medium intensity (MIRL), and low intensity (LIRL). LIRLs are typically installed on visual runways and at rural airports. MIRLs are typically installed on visual runways at larger airports and on
runway edge lights Read More »
In a metal cutting operation is carried out in machine shop. Chips are separated from the workpiece to impart the required size and shape to the workpiece. The type of chips edge formed is basically a function of the work material and cutting conditions. The chips that are formed during metal cutting operations can be
Definition of Geometric Design : geometric design of highways deals with the dimensions and layout of visible features of the highway. Geometric design fulfills the requirements of the driver and the vehicle, such as comfort, efficiency and safety. Goals of geometric design Maximize the comfort, safety and economy of facilities. Provide efficiency in traffic operation.
Geometric Design of Highways Read More »
Engineering Risk management is the identification, assessment and prioritization of risks, followed by a coordinated and economical application of resources to minimize or control the probability of occurrence and the impact of negative events, as well as to maximize the realization of opportunities. What is Project Risk? Uncertain events or Conditions Effect on the Project
Engineering Risk Management Read More »