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Section 5.4 Private Residence Inclined Elevators
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Section 5.4 applies to inclined elevators installed in or at a private residence. Section 5.4 also applies to similar elevators installed in buildings as a means of access to private residences within such buildings, provided the inclined elevators are installed so that they are not accessible to the general public or other occupants of the building. Inclined elevators conforming to the requirements of Section 5.1 are not prohibited from being installed in or at a private residence.
NOTE: See also Part 8 for additional requirements that apply to private residence inclined elevators.
If the car sides extend less than 1825 mm (72 in.) above the floor of the car, there shall be no obstruction along the runway, within the arc formed by a 600 mm (24 in.) radius whose center is the outer corner of the top rail of the car enclosure.
When solid guards are installed on the obstruction in both directions of travel, which project at least 350 mm (14 in.) in line with the direction of travel, the running clearance shall be permitted to be reduced to 175 mm (7 in.). The exposed edge of the guard shall be rounded to eliminate shear hazards.
Where a landing platform is provided or if a portion of an existing structure is used as a landing platform, it shall be protected by an enclosure not less than 915 mm (36 in.) high.
The opening in the enclosure shall be guarded by a gate to a height equal to that of the enclosure. The gates shall be permitted to be the horizontally sliding or the swinging type and shall be equipped with a combination mechanical lock and electric contact conforming to 2.12.4 and 5.3.1.8.4 through 5.3.1.8.7 where doors and gates exceed 915 mm (36 in.) in height.
The landing enclosure and gates shall either be solid construction or openwork rejecting a 25 mm (1 in.) ball. A force of 670 N (150 lbf) applied at any area 100 mm x 100 mm (4 in. x 4 in.) on the walls of the enclosure shall not reduce the running clearance below 19 mm (0.75 in.) nor cause a deflection exceeding 25 mm (1 in.).
Clearances shall conform to 5.3.1.8.2.
The horizontal clearance between the car and landing sills shall conform to 5.3.1.4.2.
All machinery and sheaves supports and machinery beams shall conform to 5.3.1.17.1.
Fastening of driving machines and sheaves shall conform to 5.3.1.17.2(c).
The factor of safety for beams and their supports shall conform to 5.3.1.17.1(c).
Except at the entrance, cars shall be enclosed on all sides to a height not less than 1070 mm (42 in.).
The car enclosure walls shall be of such strength and designed and supported so that when subjected to a force of 334 N (75 lbf) applied horizontally at any point on the walls of the enclosure, the deflection will not reduce the running clearance below 19 mm (0.75 in.) nor to more than 25 mm (1 in.).
Requirement 5.3.1.10.1(b) applies, and the guard shall extend horizontally within the zone where the doors or gates are unlocked.
A car door or gate that, when closed, will guard the opening to a height of at least 1070 mm (42 in.) or to the height of the car enclosure, whichever is greater, shall be provided at each entrance to the car. Through openings in car gates shall reject a ball 75 mm (3 in.) in diameter. The car door or gate shall be designed, constructed, and installed in accordance with 5.3.1.9.2. Power operation shall be permitted for car doors and gates, and shall conform to 5.3.1.9.2(a).
Car doors or gates shall be provided with an electric contact conforming to 2.14.4.2.3 and 2.14.4.2.5.
Glass or plastics, where used in elevator cars, shall conform to the following:
(a) Glass shall meet the requirements of 2.14.1.8.
(b) Plastics shall meet the requirements of ANSI Z97.1; 16 CFR Part 1201; or CAN/CGSB-12.1, CAN/CGSB-12.11, and CAN/CGSB-12.12, whichever is applicable.
Glass or plastics shall be secured as required by 5.4.4.1.2.
Materials shall be of a weatherproof type.
Inclined elevator cars shall have frames and platforms of metal or combination metal and wood, or other materials of equal strength. Car frames and platforms shall have a factor of safety not less than 5, based on the rated load; they should be suitably prepared and/or protected for exposure to the weather.
Inclined elevator chassis shall be constructed of metal, except for guiding members. Chassis shall have a factor of safety not less than 5, based on the rated load. The chassis-guiding members shall be retained and/or enclosed in guides or tracks in such a manner that the chassis cannot be derailed.
The car shall not have more than one compartment.
The rated load and net platform area shall conform to 5.3.1.11.1.
Shelves or benches permanently fixed to the car structure, which reduce the standing area of the platform, are permitted and shall not exceed 0.55 m2 (1.8 ft2). Fifty percent of the net area of shelves or benches shall be added to the standing platform area to calculate the net platform area. Baskets, shelves, or other objects not necessary for operation of the elevator shall not protrude beyond the exterior of the car enclosure.
The rated speed measured along the incline shall not exceed 0.38 m/s (75 ft/min).
Each inclined elevator shall be provided with a car safety capable of stopping and sustaining the car with rated load.
The car safety shall be Type A, Type B, or Type C, as specified in 2.17.5, and shall be operated by a speed governor complying with the following requirements:
(a) The governor shall be set to trip at not less than 115% nor more than 140% of the rated speed.
(b) Type A safeties shall operate as required by 2.17.8.1.
(c) Type C safeties shall operate as required by 2.17.8.2.
The speed governor shall be located where it cannot be struck by the car or counterweight in case of overtravel and where there is sufficient space for full movement of the governor parts and it is accessible for examination.
Power shall be removed from the driving-machine motor and brake before or at the time the safety applies.
Governor ropes, where used, shall conform to 5.3.1.12.7.
Winding-drum and roller-chain-type driving machines shall conform to 5.3.1.19.8.
The application of car safeties shall comply with 5.3.1.12.3.
The minimum factors of safety and stresses of safety parts and rope connections shall conform to 5.3.1.12.4.
Materials used in safeties shall meet the requirements of 2.17.13.
Suspension means shall conform to 5.3.1.13, except as modified by 5.4.8.1.
Where the chassis is suspended from the driving machine by a wire rope or roller chain, a single suspension means shall be permitted to be used.
The suspension means shall have a factor of safety not less than 8, based on the tension in the rope(s) or chain(s) when raising the car and its rated load. In no case shall the rated breaking strength of the rope(s) or chain(s) be less than 17800 N (4,000 lbf).
No car or counterweight wire rope shall be lengthened or repaired by splicing. Broken or worn suspension chains shall not be repaired. If one wire rope or a chain of a set is worn or damaged and requires replacement, the entire set of ropes or chains shall be replaced. In the event that a worn chain is replaced, the drive sprocket shall also be replaced.
Counterweight guiding and construction shall conform to 5.3.1.14.
For rated speeds not exceeding 0.25 m/s (50 ft/min), if spring- or equivalent-type buffers are not used, solid bumpers shall be installed.
Solid bumpers shall be made of wood or other suitable resilient material of sufficient strength to withstand, without failure, the impact of the car with rated load or the counterweight, descending at 125% of the rated speed.
The material used shall be a type that will resist deterioration or be treated to resist deterioration.
For rated speeds exceeding 0.25 m/s (50 ft/min), buffers of the spring type shall be installed.
Spring buffers shall be constructed to have a minimum stroke of 19 mm (0.75 in.) and a maximum stroke of 38 mm (1.5 in.) and shall not be fully compressed when struck by the car with its rated load or counterweight traveling at 125% of the rated speed.
Car and counterweight guide, track, and track supports and fastenings shall conform to 5.3.1.16. All supporting structures shall meet the requirements of the applicable building code.
The driving machine shall be permitted to be mounted on the car chassis or placed at a remote location. If remotely located, all intervening sheaves or sprockets shall be placed to ensure that ropes or chains travel in proper alignment. All sheaves or sprockets shall be guarded.
Manual operation shall conform to 5.3.1.17.2(i).
Terminal stopping devices shall conform to 5.3.1.18.
The inclined elevator shall be operated by weatherproof constant-pressure or momentary-pressure key switches at each landing and on the car. Key-operated switches shall be the spring-return type and shall be operated by a cylinder-type lock having not less than a five-pin or five-disk combination with the key removable only when the switch is in the "OFF" position. The key shall be Group 4 Security (see Section 8.1).
Emergency stop switches shall be provided in the cars and shall conform to 5.3.1.19.7.
The design and installation of the control and operating circuits shall conform to 5.3.1.19.2.
Hand rope operation shall not be used.
Requirements 5.3.1.19.4 through 5.3.1.19.6 apply.
If the driving machine is mounted on the car chassis, electrical connections between the car and power source shall be provided with a means to remove power if the connecting traveling cable parts. All electrical connections to the moving chassis and the stationary connections shall be insulated flexible conductors, in accordance with NFPA 70 or CSA C22.1, whichever is applicable (see Part 9).
Traveling cables shall be Type EO, Type ETT, or Type ETP and shall conform to the requirements of NFPA 70 or CSA C22.1, whichever is applicable (see Part 9). Where traveling cable voltage exceeds 30 V, a means shall be provided to remove the power automatically upon parting of the traveling cable.
Capacity, data, and code data plates shall be provided as required in 5.3.1.21.1,5.3.1.21.2, and Section 8.9. All plates shall be weather resistant.
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