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7.S.1 and 7.S.3
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Rule 4123:1-3-16 | Tunnels, shafts, caissons, cofferdams, and compressed air.

...(A) Reserved. (B) Definitions. (1) "Air lock" means a chamber designed for the passage of employees and materials from one air pressure to a greater or lesser air pressure. (2) "Bulkhead" means an airtight structure separating the working chamber from free air or from another chamber under a greater or lesser pressure than the working pressure. (3) "Caisson" means a wood, steel, concrete, ...

Rule 4123:1-3-17 | Cutting and welding.

...(A) Reserved. (B) Definitions. (1) "Fire-resistive construction" means a method of construction which prevents or retards the passage of hot gases or flames as defined by the fire-resistance rating. (2) "Fire-resistance rating" means the measured time in hours or fractions thereof that the material or construction will withstand fire exposure, as determined by fire tests conducted in conformity to recognized stand...

Rule 4123:1-3-17 | Cutting and welding.

...(A) Reserved. (B) Definitions. (1) "Fire-resistive construction" means a method of construction which prevents or retards the passage of hot gases or flames, as defined by the fire-resistance rating. (2) "Fire-resistance rating" means the measured time in hours, or fractions thereof, that the material or construction will withstand fire exposure, as determined by fire tests conducted in con...

Rule 4123:1-3-18 | Heating, ventilating and exhaust equipment.

...(A) Scope. This rule relates to methods of controlling air contaminants (as defined in paragraph (B) of this rule) which have been established as hazardous. (B) Definitions. (1) "Air contaminants" as used in this rule, means airborne concentrations of fibrosis-producing or toxic dusts, toxic fumes, toxic mists, toxic vapors, or toxic vapors, or toxic gases, or a combination of these. (2) "Coll...

Rule 4123:1-3-19 | Demolition.

...(A) Reserved. (B) Definitions. (1) "Chute" means a trough or tube used to guide and transport sliding objects, material, or debris from a higher to a lower level. (2) "Demolition" means to dismantle, raze, destroy, or wreck any fixed building or structure. (C) Preparatory operations. (1) Except where necessary to maintain a utility service all steam, gas, sanitary sewer and electric lines shall be shut off from ...

Rule 4123:1-3-19 | Demolition.

...(A) Reserved. (B) Definitions. (1) "Chute" means a trough or tube used to guide and transport sliding objects, material, or debris from a higher to a lower level. (2) "Demolition" means to dismantle, raze, destroy, or wreck any fixed building or structure. (C) Preparatory operations. (1) Except where necessary to maintain a utility service, all steam, gas, sanitary sewer, and electric lines s...

Rule 4123:1-3-20 | Steel erection.

...(A) Reserved. (B) Reserved. (C) Flooring requirements. (1) Permanent flooring - skeleton steel construction in tiered buildings. (a) The permanent floors shall be installed as the erection of structural members progresses, and there shall be no more than eight stories between the erection floor and the uppermost permanent floor, except where the structural integrity is maintained as a result of th...

Rule 4123:1-3-20 | Steel erection.

...(A) Reserved. (B) Reserved. (C) Flooring requirements. (1) Permanent flooring - skeleton steel construction in tiered buildings. (a) The permanent floors shall be installed as the erection of structural members progresses, and there shall be no more than eight stories between the erection floor and the uppermost permanent floor, except where the structural integrity is maintained as a result of th...

Rule 4123:1-3-22 | Woodworking machines, power saws, and other tools and equipment.

...(A) Reserved. (B) Definitions. (1) "Cutting wheels" means organic bonded wheels designed for use with power driven equipment for a multitude of operations variously known as cutting, cutting-off, grooving, slotting, coping, jointing, etc. (2) "Grinding wheels" means wheels composed of a uniform mixture of an abrasive material and a bond formed or molded into a single piece and designed for use with power driven eq...

Rule 4123:1-3-22 | Woodworking machines, power saws, and other tools and equipment.

...(A) Reserved. (B) Definitions. (1) "Cutting wheels" means organic bonded wheels designed for use with power driven equipment for a multitude of operations variously known as cutting, cutting-off, grooving, slotting, coping, or jointing. (2) "Grinding wheels" means wheels composed of a uniform mixture of an abrasive material and a bond formed or molded into a single piece and designed for use with power driven equi...

Rule 4123:1-3-24 | Roof car suspended platforms - construction.

...(A) Roof car. (1) The horizontal speed of a roof car shall be no more than fifty feet per minute. (2) A roof car may not be moved horizontally unless means are in place to prevent the car from moving outside the areas provided for roof car travel. (3) The roof car shall be designed and installed in such a manner as to remain stable and upright under every loading condition. (4) A roof car shal...

Rule 4123:1-3-24 | Roof car suspended platforms - construction.

...(A) Roof car. (1) The horizontal speed of a roof car shall be no more than fifty feet (15.2 meters) per minute. (2) A roof car may not be moved horizontally unless means are in place to prevent the car from moving outside the areas provided for roof car travel. (3) The roof car shall be designed and installed in such a manner as to remain stable and upright under every loading condition. (...

Rule 4123:1-5-03 | Ladders and scaffolds.

...

Rule 4123:1-5-06 | Portable explosive-actuated fastening tools.

...(A) Reserved. (B) Reserved. (C) Design requirements. (1) High-velocity tools. Tools of the high-velocity type shall have the following characteristics: (a) The muzzle end of the tool shall have a protective shield or guard at least three and one-half inches in diameter, mounted perpendicular to and concentric with the barrel, and designed to confine any flying fragments or particles that might otherwise create a...

Rule 4123:1-5-06 | Portable explosive-actuated fastening tools.

...(A) Reserved. (B) Reserved. (C) Design specifications. (1) High-velocity tools. Tools of the high-velocity type will have the following characteristics: (a) The muzzle end of the tool will have a protective shield or guard at least three and one-half inches in diameter, mounted perpendicular to and concentric with the barrel, and designed to confine any flying fragments or particles that might otherwise create a...

Rule 4123:1-5-06 | Portable explosive-actuated fastening tools.

...(A) Reserved. (B) Reserved. (C) Design requirements. (1) High-velocity tools. Tools of the high-velocity type shall have the following characteristics: (a) The muzzle end of the tool shall have a protective shield or guard at least three and one-half inches in diameter, mounted perpendicular to and concentric with the barrel, and designed to confine any flying fragments or particles that might otherwise create a...

Rule 4123:1-5-10 | Mechanical power presses.

...(A) Scope. The requirements of this rule pertain to mechanical power presses. Excluded from the requirements of this rule are press brakes (when used for bending, see paragraph (F) of this rule), hydraulic and pneumatic power presses, bulldozers, hot bending and hot metal presses, forging presses and hammers, riveting machines and similar types of fastener applicators. For guarding of these excluded machines, see ru...

Rule 4123:1-5-10 | Mechanical power presses.

...(A) Scope. The specifications of this rule pertain to mechanical power presses. Excluded from the specifications of this rule are press brakes (when used for bending, see paragraph (F) of this rule), hydraulic and pneumatic power presses, bulldozers, hot bending and hot metal presses, forging presses and hammers, riveting machines and similar types of fastener applicators. For guarding of these excluded machines, se...

Rule 4123:1-5-10 | Mechanical power presses.

...(A) Scope. The requirements of this rule pertain to mechanical power presses. Excluded from the requirements of this rule are press brakes (when used for bending, see paragraph (F) of this rule), hydraulic and pneumatic power presses, bulldozers, hot bending and hot metal presses, forging presses and hammers, riveting machines and similar types of fastener applicators. For guarding of these excluded machines, see ru...

Rule 4123:1-5-11 | Forging machines, other power machines and machine tools, hydraulic and pneumatic presses, and power press brakes.

...(A) Reserved. (B) Reserved. (C) Forging machines. (1) Hammers and presses. (a) The ram will be blocked when dies are being changed or other work is being done on the hammer. Blocks or wedges will be made of material, the strength and construction of which will meet or exceed the specifications and dimensions shown in Table 11-1 to this rule. (b) Tongs will be of sufficient length to enable the employee to keep h...

Rule 4123:1-5-11 | Forging machines, other power machines and machine tools, hydraulic and pneumatic presses, and power press brakes.

...(A) Reserved. (B) Reserved. (C) Forging machines. (1) Hammers and presses. (a) The ram shall be blocked when dies are being changed or other work is being done on the hammer. Blocks or wedges shall be made of material, the strength and construction of which shall meet or exceed the specifications and dimensions shown in Table 11-1 to this rule. (b) Tongs shall be of sufficient length to enable the employee to ke...

Rule 4123:1-5-12 | Abrasive grinding and cutting, polishing and wire buffing equipment.

...(A) Reserved. (B) Reserved. (C) Responsibility. (1) The employer will verbally and through demonstration instruct the employee in the safe operation and maintenance of abrasive grinding and cutting and polishing equipment. (2) It is the duty of the employee to operate such equipment in accordance with such instruction. (D) Abrasive wheel machinery. (1) General specifications. (a) Machine guarding. Abrasive wh...

Rule 4123:1-5-12 | Abrasive grinding and cutting, polishing and wire buffing equipment.

...(A) Reserved. (B) Reserved. (C) Responsibility. (1) The employer shall verbally and through demonstration instruct the employee in the safe operation and maintenance of abrasive grinding and cutting and polishing equipment. (2) It shall be the duty of the employee to operate such equipment in accordance with such instruction. (D) Abrasive wheel machinery. (1) General requirements. (a) Machine guarding. Abrasi...

Rule 4123:1-5-14 | Power-driven cranes and hoists.

...(A) Reserved. (B) Reserved (C) Overhead electric traveling cranes. The term "overhead electric traveling crane" means a crane consisting of a bridge mounted on trucks which runs on rails and the hoisting mechanism mounted on a trolley which moves transversely across the bridge, and may be controlled from a cab or from remote or pendant controls. (1) Equipment. (a) Brakes. Holding brakes for hoist motors will h...

Rule 4123:1-5-14 | Power-driven cranes and hoists.

...(A) Reserved. (B) Reserved (C) Overhead electric traveling cranes. The term "overhead electric traveling crane" shall mean a crane consisting of a bridge mounted on trucks which runs on rails and the hoisting mechanism mounted on a trolley which moves transversely across the bridge, and may be controlled from a cab or from remote or pendant controls. (1) Equipment. (a) Brakes. Holding brake...