Elevators, Hoist, & Conveyers

If a material/personnel hoist is to be used on a project, CHASSE Building Team and Trade Partners will comply with the manufacturer’s specifications and limitations applicable to the operation of all hoists and elevators. Where manufacturer’s specifications are not available, the limitations assigned to the equipment will be based on the determinations of a professional engineer competent in the field.

Rated load capacities, recommended operating speeds, and special hazard warnings or instructions will be posted on cars and platforms.

Hoisting ropes will be installed in accordance with the wire rope manufacturers’ recommendations.

The installation of live booms on hoists is prohibited.

The use of endless belt-type manlifts on construction will be prohibited.

Operating rules will be established and posted at the operator’s station of the material hoist. Such rules will include signal system and allowable line speed for various loads. Rules and notices will be posted on the car frame or crosshead in a conspicuous location, including the statement “No Riders Allowed.”

No person will be allowed to ride on material hoists except for the purposes of inspection and maintenance.

Car arresting devices will be installed to function in case of rope failure.

All material hoist towers will be designed by a licensed professional engineer.

After assembly and erection of hoists, and before being put in service, an inspection and test of all functions and safety devices will be made under the supervision of a competent person. A similar inspection and test is required following major alteration of an existing installation. All hoists will be inspected and tested at not more than 3-month intervals. The employer will prepare a certification record which includes the date the inspection and test of all functions and safety devices was performed; the signature of the person who performed the inspection and test; and a serial number, or other identifier, for the hoist that was inspected and tested. The most recent certification record will be maintained on file.

Wire rope will be removed from service when any of the following conditions exists:

• In hoisting ropes, six randomly distributed broken wires in one rope lay or three broken wires in one strand in one rope lay;

• Abrasion, scrubbing, flattening, or peening, causing loss of more than one-third of the original diameter of the outside wires;

• Evidence of any heat damage resulting from a torch or any damage caused by contact with electrical wires;

• Reduction from nominal diameter of more than three sixty-fourths inch for diameters up to and including three-fourths inch; one-sixteenth inch for diameters seven-eights to 1 1/8 inches; and three thirty-seconds inch for diameters 1 1/4 to 1 1/2 inches.

All entrances of the hoistways will be protected by substantial gates or bars which will guard the full width of the landing entrance. All hoistway entrance bars and gates will be painted with diagonal contrasting colors, such as black and yellow stripes.

Bars will be not less than 2- by 4-inch wooden bars or the equivalent, located 2 feet from the hoistway line. Bars will be located not less than 36 inches nor more than 42 inches above the floor.

Gates or bars protecting the entrances to hoistways will be equipped with a latching device.

Overhead protective covering of 2-inch planking, 3/4-inch plywood, or other solid material of equivalent strength, will be provided on the top of every material hoist cage or platform.

The operator’s station of a hoisting machine will be provided with overhead protection equivalent to tight planking not less than 2 inches thick. The support for the overhead protection will be of equal strength.

Hoist towers may be used with or without an enclosure on all sides. However, whichever alternative is chosen, the following applicable conditions will be met:

1. When a hoist tower is enclosed, it will be enclosed on all sides for its entire height with a screen enclosure of 1/2-inch mesh, No. 18 U.S. gauge wire or equivalent, except for landing access.

2. When a hoist tower is not enclosed, the hoist platform or car will be totally enclosed (caged) on all sides for the full height between the floor and the overhead protective covering with 1/2-inch mesh of No. 14 U.S. gauge wire or equivalent. The hoist platform enclosure will include the required gates for loading and unloading. A 6-foot high enclosure will be provided on the unused sides of the hoist tower at ground level.