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  2. Lift slab construction - Wikipedia

    en.wikipedia.org/wiki/Lift_slab_construction

    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 ...

  3. Automobile roof - Wikipedia

    en.wikipedia.org/wiki/Automobile_roof

    An automobile roof or car top is the portion of an automobile that sits above the passenger compartment, protecting the vehicle occupants from sun, wind, rain, and other external elements. Because the earliest automobiles were designed in an era of horse-drawn carriages , early automobile roofs used similar materials and designs.

  4. Hockey stick (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Hockey_stick_(disambiguation)

    Underwater hockey stick, used to propel the puck in underwater hockey; Saab hockey stick, styling cue on Saab cars; Hockey stick graph (global temperature) is a presentation of the global or hemispherical mean temperature record of the past 1000 years; a hockey stick diagram is a diagram that shows the payoff of a call option or a put option ...

  5. Jackscrew - Wikipedia

    en.wikipedia.org/wiki/Jackscrew

    A screw jack consists of a heavy-duty vertical screw with a load table mounted on its top, which screws into a threaded hole in a stationary support frame with a wide base resting on the ground. A rotating collar on the head of the screw has holes into which the handle, a metal bar, fits.

  6. Category:Vertical lift bridges - Wikipedia

    en.wikipedia.org/wiki/Category:Vertical_lift_bridges

    Vertical lift bridges in the United States (1 C, 34 P) Pages in category "Vertical lift bridges" The following 11 pages are in this category, out of 11 total.

  7. Hoist (device) - Wikipedia

    en.wikipedia.org/wiki/Hoist_(device)

    Hoist atop an elevator. A hoist is a device used for lifting or lowering a load by means of a drum or lift-wheel around which rope or chain wraps. It may be manually operated, electrically or pneumatically driven and may use chain, fiber or wire rope as its lifting medium.

  8. Hockey stick graph - Wikipedia

    en.wikipedia.org/wiki/Hockey_stick_graph

    A hockey stick graph or hockey stick curve is a graph, or curve shape, that resembles an ice hockey stick, in that it turns sharply from a nearly flat "blade" to a long "handle". In economics , [ 1 ] [ 2 ] marketing , [ 3 ] and dose–response relationships , [ 4 ] [ 5 ] a hockey stick graph is one in which the "blade" is near zero (hugging the ...

  9. Roof flap - Wikipedia

    en.wikipedia.org/wiki/Roof_flap

    A race car's body is designed to optimize downforce, but if that body is spun so air is flowing in reverse, lift is generated instead of countered. [2] The roof flaps' job is to disrupt that airflow and prevent lift. [5] The decision to implement a safety device to keep cars on the ground came after two crashes in 1993.