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2. Elevator - Wikipedia

   en.wikipedia.org/wiki/Elevator

   In 1912, commercial engineer Edmund F. Tweedy and electrical engineer Arthur Williams co-authored a book titled Commercial Engineering for Central Stations. [36] He followed Bolton's lead and developed a "Chart for determining the number and size of elevators required for office buildings of a given total occupied floor area".

3. List of building types - Wikipedia

   en.wikipedia.org/wiki/List_of_building_types

   Retail buildings are categorized by their configuration and size [5] Interior view of a shopping mall in Chattanooga, Tennessee, U.S. Non-freestanding (also known as shopping centers or shopping malls) Super-regional shopping center: enclosed space; 800,000+ sqft; 5+ anchor stores with other tenants that sell a very large variety of goods

4. Dumbwaiter - Wikipedia

   en.wikipedia.org/wiki/Dumbwaiter

   A simple dumbwaiter is a movable frame in a shaft, dropped by a rope on a pulley, guided by rails; most dumbwaiters have a shaft, cart, and capacity smaller than those of passenger elevators, usually 45 to 450 kg (100 to 992 lbs.) [2] Before electric motors were added in the 1920s, dumbwaiters were controlled manually by ropes on pulleys. [1]

5. 16 Divisions - Wikipedia

   en.wikipedia.org/wiki/16_Divisions

   The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.

6. Mechanical floor - Wikipedia

   en.wikipedia.org/wiki/Mechanical_floor

   Mechanical floors are generally counted in the building's floor numbering (this is required by some building codes) but are accessed only by service elevators. Some zoning regulations exclude mechanical floors from a building's maximum area calculation, permitting a significant increase in building sizes; this is the case in New York City. [1]

7. Electrical room - Wikipedia

   en.wikipedia.org/wiki/Electrical_room

   Its size is usually proportional to the size of the building; large buildings may have a main electrical room and subsidiary electrical rooms. Electrical equipment may be for power distribution equipment, or for communications equipment. [1] Electrical rooms typically house the following equipment: Electric switchboards; Distribution boards

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9. List of elevator manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_elevator_manufacturers

   Montgomery Elevator: Acquired by Kone, Canadian division in 1985 and U.S. division in 1994. Marshall Elevator: Sold to Otis; Schweizerische Aufzügefabrik AG; Thyssen AG: Merged with Krupp and became ThyssenKrupp in 1999, with subsidiary ThyssenKrupp Elevator AG; ThyssenKrupp Elevator AG announced in 2021 a name change and rebranding to TK ...