id stringlengths 24 24 | title stringlengths 3 59 | context stringlengths 151 3.71k | question stringlengths 12 217 | answers dict |
|---|---|---|---|---|
572eb0d603f9891900756959 | Elevator | A elevator of this kind uses a vacuum on top of the cab and a valve on the top of the "shaft" to move the cab upwards and closes the valve in order to keep the cab at the same level. a diaphragm or a piston is used as a "brake" if there's a sudden increase in pressure avove the cab. however, to go down, it opens the va... | How much weight is permitted on a low capacity elevator? | {
"text": [
"up to 525 lbs"
],
"answer_start": [
777
]
} |
572eb3abdfa6aa1500f8d2d4 | Elevator | In the first half of the twentieth century, almost all elevators had no automatic positioning of the floor on which the cab would stop. Some of the older freight elevators were controlled by switches operated by pulling on adjacent ropes. In general, most elevators before WWII were manually controlled by elevator opera... | Many earlier built freight elevators were controlled by what? | {
"text": [
"switches operated by pulling on adjacent ropes"
],
"answer_start": [
191
]
} |
572eb3abdfa6aa1500f8d2d5 | Elevator | In the first half of the twentieth century, almost all elevators had no automatic positioning of the floor on which the cab would stop. Some of the older freight elevators were controlled by switches operated by pulling on adjacent ropes. In general, most elevators before WWII were manually controlled by elevator opera... | How were most elevators built before 1939 powered? | {
"text": [
"by elevator operators using a rheostat connected to the motor"
],
"answer_start": [
303
]
} |
572eb3abdfa6aa1500f8d2d6 | Elevator | In the first half of the twentieth century, almost all elevators had no automatic positioning of the floor on which the cab would stop. Some of the older freight elevators were controlled by switches operated by pulling on adjacent ropes. In general, most elevators before WWII were manually controlled by elevator opera... | A rheostat is the size and shape of what? | {
"text": [
"a cake"
],
"answer_start": [
466
]
} |
572eb3abdfa6aa1500f8d2d7 | Elevator | In the first half of the twentieth century, almost all elevators had no automatic positioning of the floor on which the cab would stop. Some of the older freight elevators were controlled by switches operated by pulling on adjacent ropes. In general, most elevators before WWII were manually controlled by elevator opera... | Where was the rheostat mounted? | {
"text": [
"upright or sideways on the cab wall"
],
"answer_start": [
491
]
} |
572eb759dfa6aa1500f8d2fa | Elevator | The elevator motor was located at the top of the shaft or beside the bottom of the shaft. Pushing the handle forward would cause the cab to rise; backwards would make it sink. The harder the pressure, the faster the elevator would move. The handle also served as a dead man switch: if the operator let go of the handle, ... | Moving the helve forward causes the cab to do what? | {
"text": [
"to rise"
],
"answer_start": [
137
]
} |
572eb759dfa6aa1500f8d2fb | Elevator | The elevator motor was located at the top of the shaft or beside the bottom of the shaft. Pushing the handle forward would cause the cab to rise; backwards would make it sink. The harder the pressure, the faster the elevator would move. The handle also served as a dead man switch: if the operator let go of the handle, ... | The more pressure applied to the handle caused what? | {
"text": [
"the faster the elevator would move"
],
"answer_start": [
201
]
} |
572eb90bcb0c0d14000f14c2 | Elevator | Some skyscraper buildings and other types of installation feature a destination operating panel where a passenger registers their floor calls before entering the car. The system lets them know which car to wait for, instead of everyone boarding the next car. In this way, travel time is reduced as the elevator makes few... | What function does a "destination operating panel" feature? | {
"text": [
"a passenger registers their floor calls before entering the car"
],
"answer_start": [
102
]
} |
572ebc76cb0c0d14000f14e6 | Elevator | However, performance enhancements cannot be generalized as the benefits and limitations of the system are dependent on many factors. One problem is that the system is subject to gaming. Sometimes, one person enters the destination for a large group of people going to the same floor. The dispatching algorithm is usually... | What is one example of a limitation on the system? | {
"text": [
"the system is subject to gaming"
],
"answer_start": [
153
]
} |
572ebc76cb0c0d14000f14e7 | Elevator | However, performance enhancements cannot be generalized as the benefits and limitations of the system are dependent on many factors. One problem is that the system is subject to gaming. Sometimes, one person enters the destination for a large group of people going to the same floor. The dispatching algorithm is usually... | What is generally unable to support variations in the number of people for a particular destination? | {
"text": [
"The dispatching algorithm"
],
"answer_start": [
284
]
} |
572ebdfdc246551400ce45d6 | Elevator | To prevent this problem, in one implementation of destination control, every user gets an RFID card to identify himself, so the system knows every user call and can cancel the first call if the passenger decides to travel to another destination to prevent empty calls. The newest invention knows even where people are lo... | What is one way to implement destination control? | {
"text": [
"every user gets an RFID card to identify himself"
],
"answer_start": [
71
]
} |
572ec147c246551400ce4610 | Elevator | During up-peak mode (also called moderate incoming traffic), elevator cars in a group are recalled to the lobby to provide expeditious service to passengers arriving at the building, most typically in the morning as people arrive for work or at the conclusion of a lunch-time period. Elevators are dispatched one-by-one ... | What is another name for up-peak mode? | {
"text": [
"moderate incoming traffic"
],
"answer_start": [
33
]
} |
572ec147c246551400ce4611 | Elevator | During up-peak mode (also called moderate incoming traffic), elevator cars in a group are recalled to the lobby to provide expeditious service to passengers arriving at the building, most typically in the morning as people arrive for work or at the conclusion of a lunch-time period. Elevators are dispatched one-by-one ... | Generally, up-peak mode takes place during what times of the day? | {
"text": [
"most typically in the morning"
],
"answer_start": [
183
]
} |
572ec373c246551400ce4633 | Elevator | Independent service is a special service mode found on most elevators. It is activated by a key switch either inside the elevator itself or on a centralized control panel in the lobby. When an elevator is placed on independent service, it will no longer respond to hall calls. (In a bank of elevators, traffic is reroute... | What is the impact on an elevator set to independant service mode? | {
"text": [
"it will no longer respond to hall calls"
],
"answer_start": [
236
]
} |
572ec373c246551400ce4635 | Elevator | Independent service is a special service mode found on most elevators. It is activated by a key switch either inside the elevator itself or on a centralized control panel in the lobby. When an elevator is placed on independent service, it will no longer respond to hall calls. (In a bank of elevators, traffic is reroute... | During independant service mode how is a single cab in a hall kept from being used? | {
"text": [
"the hall buttons are disabled"
],
"answer_start": [
374
]
} |
572ec66cdfa6aa1500f8d38b | Elevator | Inspection service is designed to provide access to the hoistway and car top for inspection and maintenance purposes by qualified elevator mechanics. It is first activated by a key switch on the car operating panel usually labeled 'Inspection', 'Car Top', 'Access Enable' or 'HWENAB'. When this switch is activated the e... | Who is authorized to provide inspection and/or maintenance of the elevator? | {
"text": [
"qualified elevator mechanics"
],
"answer_start": [
120
]
} |
572ec66cdfa6aa1500f8d38e | Elevator | Inspection service is designed to provide access to the hoistway and car top for inspection and maintenance purposes by qualified elevator mechanics. It is first activated by a key switch on the car operating panel usually labeled 'Inspection', 'Car Top', 'Access Enable' or 'HWENAB'. When this switch is activated the e... | WWhat's the first thing to happen when the switch is activated? | {
"text": [
"the elevator will come to a stop if moving"
],
"answer_start": [
315
]
} |
572ec87ac246551400ce4674 | Elevator | Phase one mode is activated by a corresponding smoke sensor or heat sensor in the building. Once an alarm has been activated, the elevator will automatically go into phase one. The elevator will wait an amount of time, then proceed to go into nudging mode to tell everyone the elevator is leaving the floor. Once the ele... | What initiates Phase one mode? | {
"text": [
"a corresponding smoke sensor or heat sensor in the building"
],
"answer_start": [
31
]
} |
572ec87ac246551400ce4676 | Elevator | Phase one mode is activated by a corresponding smoke sensor or heat sensor in the building. Once an alarm has been activated, the elevator will automatically go into phase one. The elevator will wait an amount of time, then proceed to go into nudging mode to tell everyone the elevator is leaving the floor. Once the ele... | Where does the elevator go from there? | {
"text": [
"the elevator will go to the fire-recall floor"
],
"answer_start": [
388
]
} |
572ec87ac246551400ce4677 | Elevator | Phase one mode is activated by a corresponding smoke sensor or heat sensor in the building. Once an alarm has been activated, the elevator will automatically go into phase one. The elevator will wait an amount of time, then proceed to go into nudging mode to tell everyone the elevator is leaving the floor. Once the ele... | What happens if the mode is activated on the fire-recall floor? | {
"text": [
"the elevator will have an alternate floor to recall to"
],
"answer_start": [
497
]
} |
572ec9f6c246551400ce468a | Elevator | Phase-two mode can only be activated by a key switch located inside the elevator on the centralized control panel. This mode was created for firefighters so that they may rescue people from a burning building. The phase-two key switch located on the COP has three positions: off, on, and hold. By turning phase two on, t... | Where is the Phase-two key switch to be found? | {
"text": [
"on the COP"
],
"answer_start": [
243
]
} |
572ec9f6c246551400ce468b | Elevator | Phase-two mode can only be activated by a key switch located inside the elevator on the centralized control panel. This mode was created for firefighters so that they may rescue people from a burning building. The phase-two key switch located on the COP has three positions: off, on, and hold. By turning phase two on, t... | What does Phase-two do? | {
"text": [
"enables the car to move"
],
"answer_start": [
335
]
} |
572ec9f6c246551400ce468c | Elevator | Phase-two mode can only be activated by a key switch located inside the elevator on the centralized control panel. This mode was created for firefighters so that they may rescue people from a burning building. The phase-two key switch located on the COP has three positions: off, on, and hold. By turning phase two on, t... | What actions must a firefighter take to activate Phase-two mode? | {
"text": [
"manually pushes and holds the door close button"
],
"answer_start": [
462
]
} |
572ecdd5cb0c0d14000f15a4 | Elevator | Once the elevator arrives at the floor, it will park with its doors open and the car buttons will be disabled to prevent a passenger from taking control of the elevator. Medical personnel must then activate the code-blue key switch inside the car, select their floor and close the doors with the door close button. The e... | Where then does the elevator go? | {
"text": [
"The elevator will then travel non-stop to the selected floor"
],
"answer_start": [
315
]
} |
572ed1e0dfa6aa1500f8d40c | Elevator | In hydraulic elevator systems, emergency power will lower the elevators to the lowest landing and open the doors to allow passengers to exit. The doors then close after an adjustable time period and the car remains unusable until reset, usually by cycling the elevator main power switch. Typically, due to the high curre... | What are current-limiting motor starters referred to as? | {
"text": [
"\"soft-start\" contactors"
],
"answer_start": [
621
]
} |
572ed638dfa6aa1500f8d42f | Elevator | Statistically speaking, cable-borne elevators are extremely safe. Their safety record is unsurpassed by any other vehicle system. In 1998, it was estimated that approximately eight millionths of one percent (1 in 12 million) of elevator rides result in an anomaly, and the vast majority of these were minor things such a... | What types of elevator hold the highest safety record? | {
"text": [
"cable-borne elevators"
],
"answer_start": [
24
]
} |
572ed638dfa6aa1500f8d431 | Elevator | Statistically speaking, cable-borne elevators are extremely safe. Their safety record is unsurpassed by any other vehicle system. In 1998, it was estimated that approximately eight millionths of one percent (1 in 12 million) of elevator rides result in an anomaly, and the vast majority of these were minor things such a... | What was the severity of the majority of elevator failures recorded? | {
"text": [
"minor things such as the doors failing to open"
],
"answer_start": [
301
]
} |
572ed638dfa6aa1500f8d433 | Elevator | Statistically speaking, cable-borne elevators are extremely safe. Their safety record is unsurpassed by any other vehicle system. In 1998, it was estimated that approximately eight millionths of one percent (1 in 12 million) of elevator rides result in an anomaly, and the vast majority of these were minor things such a... | Before the Twin Towers attack in 2001 , what was the only reported freefall accident attributed to a modern cable-borne elevator? | {
"text": [
"1945 when a B-25 bomber struck the Empire State Building"
],
"answer_start": [
860
]
} |
572eddd7dfa6aa1500f8d47f | Elevator | Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastroph... | Underground electrolytic malfunctions in hydraulic elevators can result in the destruction of what? | {
"text": [
"the cylinder and bulkhead"
],
"answer_start": [
87
]
} |
572eddd7dfa6aa1500f8d480 | Elevator | Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastroph... | What Elevator Safety Code change required a second dished bulkhead? | {
"text": [
"1972 ASME A17.1"
],
"answer_start": [
205
]
} |
572eddd7dfa6aa1500f8d481 | Elevator | Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastroph... | Before the code change was enacted what was the only permitted hydraulic cylinder type? | {
"text": [
"single-bottom"
],
"answer_start": [
367
]
} |
572eddd7dfa6aa1500f8d482 | Elevator | Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastroph... | Once the cylinder is breached, what calamity does the loss of fluid cause? | {
"text": [
"uncontrolled down movement of the elevator"
],
"answer_start": [
463
]
} |
572eddd7dfa6aa1500f8d483 | Elevator | Past problems with hydraulic elevators include underground electrolytic destruction of the cylinder and bulkhead, pipe failures, and control failures. Single bulkhead cylinders, typically built prior to a 1972 ASME A17.1 Elevator Safety Code change requiring a second dished bulkhead, were subject to possible catastroph... | What testing does the code require? | {
"text": [
"periodic testing of the pressure capability"
],
"answer_start": [
785
]
} |
572edff503f9891900756aa9 | Elevator | Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under i... | What part of the mine shaft requires routine testing? | {
"text": [
"elevator rails"
],
"answer_start": [
29
]
} |
572edff503f9891900756aaa | Elevator | Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under i... | What type of testing is done to the an area of the cable? | {
"text": [
"destructive testing"
],
"answer_start": [
89
]
} |
572edff503f9891900756aac | Elevator | Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under i... | Afterwards, what type of machine is the segment secured in? | {
"text": [
"hydraulic stretching machine"
],
"answer_start": [
256
]
} |
572edff503f9891900756aad | Elevator | Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under i... | What types of information are collected in the process? | {
"text": [
"Data about elasticity, load, and other factors is compiled"
],
"answer_start": [
360
]
} |
572ee270c246551400ce4774 | Elevator | Passenger elevators capacity is related to the available floor space. Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments.[citation needed] Generally passenger elevators in buildings of eight floors or fewer are hydraulic or electric, which can r... | What dictates passenger elevator capacities? | {
"text": [
"the available floor space"
],
"answer_start": [
43
]
} |
572ee270c246551400ce4776 | Elevator | Passenger elevators capacity is related to the available floor space. Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments.[citation needed] Generally passenger elevators in buildings of eight floors or fewer are hydraulic or electric, which can r... | What types of passenger elevators are installed in structures of up to eight floors? | {
"text": [
"hydraulic or electric"
],
"answer_start": [
286
]
} |
572ee270c246551400ce4777 | Elevator | Passenger elevators capacity is related to the available floor space. Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments.[citation needed] Generally passenger elevators in buildings of eight floors or fewer are hydraulic or electric, which can r... | Hydraulic elevators can reach speeds up to 1m/s or how many feet per minute? | {
"text": [
"200"
],
"answer_start": [
345
]
} |
572ee270c246551400ce4778 | Elevator | Passenger elevators capacity is related to the available floor space. Generally passenger elevators are available in capacities from 500 to 2,700 kg (1,000–6,000 lb) in 230 kg (500 lb) increments.[citation needed] Generally passenger elevators in buildings of eight floors or fewer are hydraulic or electric, which can r... | Electric elevators can reach speeds up to 3 m/s or how many feet per minute? | {
"text": [
"500"
],
"answer_start": [
512
]
} |
572eea0ddfa6aa1500f8d4d5 | Elevator | Sometimes passenger elevators are used as a city transport along with funiculars. For example, there is a 3-station underground public elevator in Yalta, Ukraine, which takes passengers from the top of a hill above the Black Sea on which hotels are perched, to a tunnel located on the beach below. At Casco Viejo station... | Passenger elevators, used in city transport share similarities to what other ascending and descending vehicles counterbalancing each other? | {
"text": [
"funiculars"
],
"answer_start": [
70
]
} |
572eea0ddfa6aa1500f8d4d6 | Elevator | Sometimes passenger elevators are used as a city transport along with funiculars. For example, there is a 3-station underground public elevator in Yalta, Ukraine, which takes passengers from the top of a hill above the Black Sea on which hotels are perched, to a tunnel located on the beach below. At Casco Viejo station... | What type of public elevator in Yalta, Ukraine, transport passengers from a hill above the Black Sea to a tunnel down on the beach? | {
"text": [
"underground public elevator"
],
"answer_start": [
116
]
} |
572eea0ddfa6aa1500f8d4d7 | Elevator | Sometimes passenger elevators are used as a city transport along with funiculars. For example, there is a 3-station underground public elevator in Yalta, Ukraine, which takes passengers from the top of a hill above the Black Sea on which hotels are perched, to a tunnel located on the beach below. At Casco Viejo station... | The elevator located at the Casco Viejo station in the Bilbao Metro is also used for what? | {
"text": [
"city transportation"
],
"answer_start": [
430
]
} |
572eeb54c246551400ce47a6 | Elevator | A freight elevator, or goods lift, is an elevator designed to carry goods, rather than passengers. Freight elevators are generally required to display a written notice in the car that the use by passengers is prohibited (though not necessarily illegal), though certain freight elevators allow dual use through the use of... | What is another name for a freight elevator? | {
"text": [
"goods lift"
],
"answer_start": [
23
]
} |
572eeb54c246551400ce47a8 | Elevator | A freight elevator, or goods lift, is an elevator designed to carry goods, rather than passengers. Freight elevators are generally required to display a written notice in the car that the use by passengers is prohibited (though not necessarily illegal), though certain freight elevators allow dual use through the use of... | Some freight elevators allow transport of both freight and passengers by using what? | {
"text": [
"an inconspicuous riser"
],
"answer_start": [
321
]
} |
572eeb54c246551400ce47aa | Elevator | A freight elevator, or goods lift, is an elevator designed to carry goods, rather than passengers. Freight elevators are generally required to display a written notice in the car that the use by passengers is prohibited (though not necessarily illegal), though certain freight elevators allow dual use through the use of... | What type of elevator is better suited for carrying freight? | {
"text": [
"electric elevators"
],
"answer_start": [
778
]
} |
572eecab03f9891900756ae3 | Elevator | Stage lifts and orchestra lifts are specialized elevators, typically powered by hydraulics, that are used to raise and lower entire sections of a theater stage. For example, Radio City Music Hall has four such elevators: an orchestra lift that covers a large area of the stage, and three smaller lifts near the rear of t... | How are stage lifts powered? | {
"text": [
"by hydraulics"
],
"answer_start": [
77
]
} |
572eecab03f9891900756ae4 | Elevator | Stage lifts and orchestra lifts are specialized elevators, typically powered by hydraulics, that are used to raise and lower entire sections of a theater stage. For example, Radio City Music Hall has four such elevators: an orchestra lift that covers a large area of the stage, and three smaller lifts near the rear of t... | How many hydraulic elevators are there at Radio City Music Hall? | {
"text": [
"four"
],
"answer_start": [
200
]
} |
572eecab03f9891900756ae6 | Elevator | Stage lifts and orchestra lifts are specialized elevators, typically powered by hydraulics, that are used to raise and lower entire sections of a theater stage. For example, Radio City Music Hall has four such elevators: an orchestra lift that covers a large area of the stage, and three smaller lifts near the rear of t... | What is on the background of the image which can be used as a scale to represent the size of the mechanism? | {
"text": [
"a barrel"
],
"answer_start": [
509
]
} |
572eef64cb0c0d14000f1682 | Elevator | A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less rob... | What type of elevators are generally less costly than full commercial elevators? | {
"text": [
"residential"
],
"answer_start": [
2
]
} |
572eef64cb0c0d14000f1683 | Elevator | A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less rob... | What type of doors do commercial elevators use? | {
"text": [
"metal sliding"
],
"answer_start": [
247
]
} |
572eef64cb0c0d14000f1684 | Elevator | A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less rob... | What safety mechanisms are still required, despite lower design costs? | {
"text": [
"locks on shaft access doors, fall arrestors, and emergency phones"
],
"answer_start": [
412
]
} |
572eef64cb0c0d14000f1685 | Elevator | A residential elevator is often permitted to be of lower cost and complexity than full commercial elevators. They may have unique design characteristics suited for home furnishings, such as hinged wooden shaft-access doors rather than the typical metal sliding doors of commercial elevators. Construction may be less rob... | What type of elevator has a hinged wooden shaft-access door? | {
"text": [
"residential"
],
"answer_start": [
2
]
} |
572ef20ecb0c0d14000f1694 | Elevator | Some types of residential elevators do not use a traditional elevator shaft, machine room, and elevator hoistway. This allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation. The ASME board first approved machine-room-less systems in a revision of the ASME A17.1 in 2007... | What types of elevators occassionaly do not use a traditional elevator shaft, machine room or hoistway? | {
"text": [
"residential"
],
"answer_start": [
14
]
} |
572ef20ecb0c0d14000f1696 | Elevator | Some types of residential elevators do not use a traditional elevator shaft, machine room, and elevator hoistway. This allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation. The ASME board first approved machine-room-less systems in a revision of the ASME A17.1 in 2007... | In what year were Machine-room-less elevators first allowed? | {
"text": [
"2007"
],
"answer_start": [
316
]
} |
572ef20ecb0c0d14000f1697 | Elevator | Some types of residential elevators do not use a traditional elevator shaft, machine room, and elevator hoistway. This allows an elevator to be installed where a traditional elevator may not fit, and simplifies installation. The ASME board first approved machine-room-less systems in a revision of the ASME A17.1 in 2007... | This decision reflected a revision of what? | {
"text": [
"the ASME A17.1"
],
"answer_start": [
298
]
} |
572ef3eac246551400ce47de | Elevator | Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower c... | What are small freight elevators used for things such as food, called? | {
"text": [
"Dumbwaiters"
],
"answer_start": [
0
]
} |
572ef3eac246551400ce47df | Elevator | Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower c... | What rooms are dumbwaiters frequently used in? | {
"text": [
"They often connect kitchens to rooms on other floors"
],
"answer_start": [
132
]
} |
572ef3eac246551400ce47e0 | Elevator | Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower c... | What is a safety feature found in passenger elevators they generally do not have? | {
"text": [
"various ropes for redundancy"
],
"answer_start": [
271
]
} |
572ef3eac246551400ce47e1 | Elevator | Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower c... | What is the height restriction on dumbwaiters? | {
"text": [
"they can be up to 1 meter (3 ft.) tall"
],
"answer_start": [
333
]
} |
572ef3eac246551400ce47e2 | Elevator | Dumbwaiters are small freight elevators that are intended to carry food, books or other small freight loads rather than passengers. They often connect kitchens to rooms on other floors. they usually do not have the same safety features found in passenger elevators, like various ropes for redundancy. they have a lower c... | What features do they have that mimic passenger elevators? | {
"text": [
"calling, door control, floor selection"
],
"answer_start": [
468
]
} |
572ef6bfcb0c0d14000f16a6 | Elevator | Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) ... | An inclined plane with a conveyor belt describes what type of elevator? | {
"text": [
"Material transport elevators"
],
"answer_start": [
0
]
} |
572ef6bfcb0c0d14000f16a7 | Elevator | Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) ... | What do the partians do on the conveyor? | {
"text": [
"ensure that the material moves forward"
],
"answer_start": [
141
]
} |
572ef6bfcb0c0d14000f16a8 | Elevator | Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) ... | What industries are these types of elevators generally used in? | {
"text": [
"industrial and agricultural applications"
],
"answer_start": [
215
]
} |
572ef6bfcb0c0d14000f16a9 | Elevator | Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) ... | What are spiral screws used for? | {
"text": [
"to elevate grain for storage in large vertical silos"
],
"answer_start": [
329
]
} |
572ef6bfcb0c0d14000f16aa | Elevator | Material transport elevators generally consist of an inclined plane on which a conveyor belt runs. The conveyor often includes partitions to ensure that the material moves forward. These elevators are often used in industrial and agricultural applications. When such mechanisms (or spiral screws or pneumatic transport) ... | What type of elevators are used for loading loose materials into bulk carriers? | {
"text": [
"Belt elevators"
],
"answer_start": [
432
]
} |
572efd66cb0c0d14000f16cc | Elevator | Elevators necessitated new social protocols. When Nicholas II of Russia visited the Hotel Adlon in Berlin, his courtiers panicked about who would enter the elevator first, and who would press the buttons. In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the ... | The invention of elevators brought with it questions of social etiquette and formalities, generally referred to as what? | {
"text": [
"social protocols"
],
"answer_start": [
27
]
} |
572efd66cb0c0d14000f16cd | Elevator | Elevators necessitated new social protocols. When Nicholas II of Russia visited the Hotel Adlon in Berlin, his courtiers panicked about who would enter the elevator first, and who would press the buttons. In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the ... | The last tsar of Russia, Nicholas ll encountered his first elevator at the Hotel Adloin in what city? | {
"text": [
"Berlin"
],
"answer_start": [
99
]
} |
572efd66cb0c0d14000f16ce | Elevator | Elevators necessitated new social protocols. When Nicholas II of Russia visited the Hotel Adlon in Berlin, his courtiers panicked about who would enter the elevator first, and who would press the buttons. In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the ... | This caused a stir in deciding who should enter first and who should do what? | {
"text": [
"press the buttons"
],
"answer_start": [
186
]
} |
572efd66cb0c0d14000f16cf | Elevator | Elevators necessitated new social protocols. When Nicholas II of Russia visited the Hotel Adlon in Berlin, his courtiers panicked about who would enter the elevator first, and who would press the buttons. In Lifted: A Cultural History of the Elevator, author Andreas Bernard documents other social impacts caused by the ... | Andreas Bernard wrote about the social aspects of the new elevators in what book? | {
"text": [
"Lifted: A Cultural History of the Elevator"
],
"answer_start": [
208
]
} |
572eff4bcb0c0d14000f16ee | Elevator | In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a... | Modern elevator position or floor indicaters often use what type of bulbs? | {
"text": [
"LED"
],
"answer_start": [
95
]
} |
572eff4bcb0c0d14000f16ef | Elevator | In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a... | What type of lanterns are used outside elevators as well as inside most cabs? | {
"text": [
"direction lanterns"
],
"answer_start": [
104
]
} |
572eff4bcb0c0d14000f16f0 | Elevator | In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a... | What do floor indicaters often consist of? | {
"text": [
"successively illuminated floor indications or LCDs"
],
"answer_start": [
379
]
} |
572eff4bcb0c0d14000f16f1 | Elevator | In addition to the call buttons, elevators usually have floor indicators (often illuminated by LED) and direction lanterns. The former are almost universal in cab interiors with more than two stops and may be found outside the elevators as well on one or more of the floors. Floor indicators can consist of a dial with a... | What generally indicates the arrival of the elevator at a new floor? | {
"text": [
"a sound"
],
"answer_start": [
501
]
} |
572f010ddfa6aa1500f8d553 | Elevator | Direction lanterns are also found both inside and outside elevator cars, but they should always be visible from outside because their primary purpose is to help people decide whether or not to get on the elevator. If somebody waiting for the elevator wants to go up, but a car comes first that indicates that it is going... | What type of etching might you see on a direction indicator? | {
"text": [
"arrows or shaped like arrows"
],
"answer_start": [
485
]
} |
572f010ddfa6aa1500f8d554 | Elevator | Direction lanterns are also found both inside and outside elevator cars, but they should always be visible from outside because their primary purpose is to help people decide whether or not to get on the elevator. If somebody waiting for the elevator wants to go up, but a car comes first that indicates that it is going... | Some elevators may use the color convention for only what purpose? | {
"text": [
"to differentiate between directions"
],
"answer_start": [
841
]
} |
572f0356dfa6aa1500f8d563 | Elevator | There are several technologies aimed to provide better experience to passengers suffering from claustrophobia, anthropophobia or social anxiety. Israeli startup DigiGage uses motion sensors to scroll the pre-rendered images, building and floor-specific content on a screen embedded into the wall as the cab moves up and ... | New technologies aim to provide a better elevator experience to passengers who suffer from what? | {
"text": [
"claustrophobia, anthropophobia or social anxiety"
],
"answer_start": [
95
]
} |
572f0356dfa6aa1500f8d564 | Elevator | There are several technologies aimed to provide better experience to passengers suffering from claustrophobia, anthropophobia or social anxiety. Israeli startup DigiGage uses motion sensors to scroll the pre-rendered images, building and floor-specific content on a screen embedded into the wall as the cab moves up and ... | What Israeli company uses motion sensors to display information on a screen embedded in the wall of the cabs? | {
"text": [
"DigiGage"
],
"answer_start": [
161
]
} |
572f0356dfa6aa1500f8d565 | Elevator | There are several technologies aimed to provide better experience to passengers suffering from claustrophobia, anthropophobia or social anxiety. Israeli startup DigiGage uses motion sensors to scroll the pre-rendered images, building and floor-specific content on a screen embedded into the wall as the cab moves up and ... | LiftEye uses virtual window technology for what? | {
"text": [
"to turn common elevator into panoramic"
],
"answer_start": [
387
]
} |
572f0356dfa6aa1500f8d567 | Elevator | There are several technologies aimed to provide better experience to passengers suffering from claustrophobia, anthropophobia or social anxiety. Israeli startup DigiGage uses motion sensors to scroll the pre-rendered images, building and floor-specific content on a screen embedded into the wall as the cab moves up and ... | Where is the video projected? | {
"text": [
"on a wall-sized screens"
],
"answer_start": [
582
]
} |
572f068ccb0c0d14000f1718 | Elevator | In most US and Canadian jurisdictions, passenger elevators are required to conform to the American Society of Mechanical Engineers' Standard A17.1, Safety Code for Elevators and Escalators. As of 2006, all states except Kansas, Mississippi, North Dakota, and South Dakota have adopted some version of ASME codes, though ... | In what neighboring countries are passenger elevators required to adhere to Standard A17.1? | {
"text": [
"most US and Canadian jurisdictions"
],
"answer_start": [
3
]
} |
572f068ccb0c0d14000f1719 | Elevator | In most US and Canadian jurisdictions, passenger elevators are required to conform to the American Society of Mechanical Engineers' Standard A17.1, Safety Code for Elevators and Escalators. As of 2006, all states except Kansas, Mississippi, North Dakota, and South Dakota have adopted some version of ASME codes, though ... | What is Standard A17.1? | {
"text": [
"Safety Code for Elevators and Escalators"
],
"answer_start": [
148
]
} |
572f068ccb0c0d14000f171a | Elevator | In most US and Canadian jurisdictions, passenger elevators are required to conform to the American Society of Mechanical Engineers' Standard A17.1, Safety Code for Elevators and Escalators. As of 2006, all states except Kansas, Mississippi, North Dakota, and South Dakota have adopted some version of ASME codes, though ... | What is the equivilent to the US Standard A17.1 called in Canada? | {
"text": [
"CAN/CSA B44 Safety Standard"
],
"answer_start": [
383
]
} |
572f068ccb0c0d14000f171b | Elevator | In most US and Canadian jurisdictions, passenger elevators are required to conform to the American Society of Mechanical Engineers' Standard A17.1, Safety Code for Elevators and Escalators. As of 2006, all states except Kansas, Mississippi, North Dakota, and South Dakota have adopted some version of ASME codes, though ... | What are passenger elevators tested with? | {
"text": [
"ASME A17.2 Standard"
],
"answer_start": [
688
]
} |
572f0b6cdfa6aa1500f8d57f | Elevator | Most elevators have a location in which the permit for the building owner to operate the elevator is displayed. While some jurisdictions require the permit to be displayed in the elevator cab, other jurisdictions allow for the operating permit to be kept on file elsewhere – such as the maintenance office – and to be ma... | Whose name is on the permit required for operation of an elevator? | {
"text": [
"the building owner"
],
"answer_start": [
55
]
} |
572f0b6cdfa6aa1500f8d581 | Elevator | Most elevators have a location in which the permit for the building owner to operate the elevator is displayed. While some jurisdictions require the permit to be displayed in the elevator cab, other jurisdictions allow for the operating permit to be kept on file elsewhere – such as the maintenance office – and to be ma... | Aside from the elevator, where else might a permit be displayed? | {
"text": [
"the maintenance office"
],
"answer_start": [
283
]
} |
572f0d29dfa6aa1500f8d591 | Elevator | As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated th... | In 2008, what country had the largest number of elevators? | {
"text": [
"Spain"
],
"answer_start": [
20
]
} |
572f0d29dfa6aa1500f8d592 | Elevator | As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated th... | What country had the second most elevators installed? | {
"text": [
"United States"
],
"answer_start": [
189
]
} |
572f0d29dfa6aa1500f8d593 | Elevator | As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated th... | How many elevators had China installed since 1949? | {
"text": [
"610,000"
],
"answer_start": [
251
]
} |
572f0d29dfa6aa1500f8d594 | Elevator | As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated th... | What country boasts the worlds largest market for elevators? | {
"text": [
"Italy"
],
"answer_start": [
433
]
} |
572f0d29dfa6aa1500f8d595 | Elevator | As of January 2008, Spain is the nation with the most elevators installed in the world, with 950,000 elevators installed that run more than one hundred million lifts every day, followed by United States with 700,000 elevators installed and China with 610,000 elevators installed since 1949. In Brazil, it is estimated th... | How many elevators are in Brazil? | {
"text": [
"300,000"
],
"answer_start": [
347
]
} |
572f0e72c246551400ce487e | Elevator | Double deck elevators are used in the Taipei 101 office tower. Tenants of even-numbered floors first take an escalator (or an elevator from the parking garage) to the 2nd level, where they will enter the upper deck and arrive at their floors. The lower deck is turned off during low-volume hours, and the upper deck can ... | What type of elevators are used in the Taipei 101 office tower? | {
"text": [
"Double deck elevators"
],
"answer_start": [
0
]
} |
572f0e72c246551400ce487f | Elevator | Double deck elevators are used in the Taipei 101 office tower. Tenants of even-numbered floors first take an escalator (or an elevator from the parking garage) to the 2nd level, where they will enter the upper deck and arrive at their floors. The lower deck is turned off during low-volume hours, and the upper deck can ... | During what hours is the lower deck turned off? | {
"text": [
"low-volume hours"
],
"answer_start": [
279
]
} |
572f0e72c246551400ce4880 | Elevator | Double deck elevators are used in the Taipei 101 office tower. Tenants of even-numbered floors first take an escalator (or an elevator from the parking garage) to the 2nd level, where they will enter the upper deck and arrive at their floors. The lower deck is turned off during low-volume hours, and the upper deck can ... | During the low volume hours, what can the upper deck function as? | {
"text": [
"a single-level elevator stopping at all adjacent floors"
],
"answer_start": [
327
]
} |
572f0e72c246551400ce4881 | Elevator | Double deck elevators are used in the Taipei 101 office tower. Tenants of even-numbered floors first take an escalator (or an elevator from the parking garage) to the 2nd level, where they will enter the upper deck and arrive at their floors. The lower deck is turned off during low-volume hours, and the upper deck can ... | On what floor must restaurant customers clear their reservations? | {
"text": [
"at the reception counter on the 2nd floor"
],
"answer_start": [
522
]
} |
572f0e72c246551400ce4882 | Elevator | Double deck elevators are used in the Taipei 101 office tower. Tenants of even-numbered floors first take an escalator (or an elevator from the parking garage) to the 2nd level, where they will enter the upper deck and arrive at their floors. The lower deck is turned off during low-volume hours, and the upper deck can ... | What levels make up the "sky lobby"? | {
"text": [
"36 and 60, upper-deck car"
],
"answer_start": [
628
]
} |
572f0fb8c246551400ce4888 | Elevator | The high-speed observation deck elevators accelerate to a world-record certified speed of 1,010 metres per minute (61 km/h) in 16 seconds, and then it slows down for arrival with subtle air pressure sensations. The door opens after 37 seconds from the 5th floor. Special features include aerodynamic car and counterweigh... | How fast do the observation deck elevators travel? | {
"text": [
"1,010 metres per minute (61 km/h) in 16 seconds"
],
"answer_start": [
90
]
} |
572f0fb8c246551400ce4889 | Elevator | The high-speed observation deck elevators accelerate to a world-record certified speed of 1,010 metres per minute (61 km/h) in 16 seconds, and then it slows down for arrival with subtle air pressure sensations. The door opens after 37 seconds from the 5th floor. Special features include aerodynamic car and counterweigh... | This speed holds what record? | {
"text": [
"world-record certified speed"
],
"answer_start": [
58
]
} |
572f0fb8c246551400ce488a | Elevator | The high-speed observation deck elevators accelerate to a world-record certified speed of 1,010 metres per minute (61 km/h) in 16 seconds, and then it slows down for arrival with subtle air pressure sensations. The door opens after 37 seconds from the 5th floor. Special features include aerodynamic car and counterweigh... | What does cabin pressure control do? | {
"text": [
"help passengers adapt smoothly to pressure changes"
],
"answer_start": [
354
]
} |
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