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Lockdown drills are means of practicing preparedness in a business in the event of an intruder or criminal act. Generally an announcement is given that the building is going on an immediate lockdown. At that point, all occupants present at the time of the drill go to a room and lock all doors and windows tight.
Lift slab construction (also called the Youtz-Slick Method) is a method of constructing concrete buildings by casting the floor or roof slab on top of the previous slab and then raising (jacking) the slab up with hydraulic jacks. This method of construction allows for a large portion of the work to be completed at ground level, negating the ...
A hold-down may also refer to clamping device used to anchor a pipe to a structural steel element or concrete floor or allow movement of the pipe in an axial direction. [1] At the bottom, the hold down is connected to the concrete foundation or structural slab by an embedded or epoxied anchor bolt. At the top, the hold down is connected to a ...
The steps necessary to isolate equipment are often documented in an isolation procedure or a lockout tagout procedure. The isolation procedure generally includes the following tasks: [2] Announce shut off; Identify the energy sources; Isolate the energy sources; Lock and tag the energy sources; Demonstrate that the equipment isolation is effective
Pages in category "Safety drills" The following 7 pages are in this category, out of 7 total. This list may not reflect recent changes. D. Duck and cover; E.
Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute.
The new Austrian tunneling method (NATM), also known as the sequential excavation method (SEM) or sprayed concrete lining method [1] (SCL), is a method of modern tunnel design and construction employing sophisticated monitoring to optimize various wall reinforcement techniques based on the type of rock encountered as tunneling progresses.
Hydrophobic Polymer waterstops such as PVC, PE, TPV, or rubber are supplied to the construction site in coils (usually 25 m long), and are generally anywhere from 120 mm to 320 mm wide in a variety of profiles that are designed to simultaneously provide an interlock with the concrete they are installed in and to provide for a limited amount of ...