Osha Part 1926 Pdf

Walkways shall be provided where employees or equipment are required or permitted to cross over excavations. The training must cover the hazards of using diagonal braces as fall protection. Spoils must be kept at least two feet away from the edge of a trench. Wales means horizontal members of a shoring system placed parallel to the excavation face whose sides bear against the vertical members of the shoring system or earth. Scaffolds may only be erected, dismantled, moved, or altered under the supervision of a trained, competent person.

Saturated soil means a soil in which the voids are filled with water. Hard hats must be properly maintained in good condition. This appendix contains specifications for sloping and benching when used as methods of protecting employees working in excavations from cave-ins. Cleats or other appropriate means used to connect runway structural members shall be attached to the bottom of the runway or shall be attached in a manner to prevent tripping.

Stable rock means natural solid mineral material that can be excavated with vertical sides and will remain intact while exposed. This includes the combined weight of the user, plus any materials and tools supported by the ladder. Representing softwood lumber manufacturers.

These may result from falling objects, walking into a low-clearance object, or by standing up in an area with limited headroom. The basic purpose of the drying test is to differentiate between cohesive material with fissures, unfissured cohesive material, and granular material. Small spalls are evidence of moving ground and are indications of potentially hazardous situations. Layered system means two or more distinctly different soil or rock types arranged in layers. If the clumps do not pulverize easily, the material is cohesive with fissures.

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If synthetic or natural rope is used, it must be protected from heat. The soil can be classified as a unfissured cohesive material and the unconfined compressive strength should be determined.

Each container holding a hazardous substance including vats, tanks, barrels, bottles, etc. If chunks of soil spall off a vertical side, the soil could be fissured. Failure means the breakage, displacement, or permanent deformation of a structural member or connection so as to reduce its structural integrity and its supportive capabilities. When the vertical spacing of crossbraces is four feet, place the top crossbrace no more than two feet below the top of the trench. Employees must be trained in how to respond to spills, including how to protect themselves.

Title 29 Part 1926 Subpart P

Examine layered systems to identify if the layers slope toward the excavation. Scaffolding makes it easy and economical to work on the sides of buildings, or on large equipment. Deviation from the specifications, recommendations, and limitations issued or made by the manufacturer shall only be allowed after the manufacturer issues specific written approval. Uprights means the vertical members of a trench shoring system placed in contact with the earth and usually positioned so that individual members do not contact each other.

Scaffold must have guardrails, midrails, and toe-boards. Bell-bottom pier hole means a type of shaft or footing excavation, the bottom of which is made larger than the cross section above to form a belled shape. Each table presents the maximum vertical and horizontal spacings that may be used with various aluminum member sizes and various hydraulic cylinder sizes. The full load carried by the ladder should be determined.

Manual analysis of soil samples is conducted to determine quantitative as well as qualitative properties of soil and to provide more information in order to classify soil properly. These inspections are only required when employee exposure can be reasonably anticipated. The categories are determined based on an analysis of the properties and performance characteristics of the deposits and the environmental conditions of exposure. In these tables the vertical spacing is held constant at four feet on center.

Structural ramp means a ramp built of steel or wood, usually used for vehicle access. Employees entering bell-bottom pier holes, or other similar deep and confined footing excavations, shall wear a harness with a lifeline securely attached to it. Sloping and benching systems. There are a number of common situations that lead to fall hazards.

Only one arrangement of members is provided. Eye and Face Protection Hazards that injure the eyes or face are common. Follow WeatherBuild WeatherBuild. Ramps made of soil or rock are not considered structural ramps. If the soil is dry and crumbles on its own or with moderate pressure into individual grains or fine powder, it is granular any combination of gravel, sand, or silt.

Specify the protocols and procedures for suspending and resuming outdoor work activities and equipment operations due to threats of thunderstorms and lightning strikes. If the vertical distance from the center of the lowest crossbrace to the bottom of the trench exceeds two and one-half feet, uprights shall be firmly embedded or a mudsill shall be used.

When material or equipment that is used for protective systems is damaged, a competent person shall examine the material or equipment and evaluate its suitability for continued use. When a waler system is used the vertical timber sheeting to be used is also selected from these tables. Means of egress from trench excavations. Employees shall be protected from excavated or other materials or equipment that could pose a hazard by falling or rolling into excavations. Minimum sizes of members are specified for use in different types of soil.

Fall Protection Requirements

Failure to recognize chemical hazards can result in health problems like respiratory issues and chemical burns, as well as fires and explosions. Some moist granular soils exhibit apparent cohesion. Scaffold training must be provided for workers. Prior to anyone entering the trench. However, each layer may be classified individually where a more stable layer lies under a less stable layer.

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Scope, application, and definitions applicable to this subpart. Do not use ladders that have metal parts near overhead wires. These precautions include providing proper respiratory protection or ventilation in accordance with subparts D and E of this part respectively. Support system means a structure such as underpinning, bracing, or shoring, which provides support to an adjacent structure, underground installation, christmas memory pdf or the sides of an excavation.

This equipment shall be attended when in use. Materials and equipment used for protective systems shall be free from damage or defects that might impair their proper function.

The members of the shoring system that are to be selected using this information are the hydraulic cylinders, and either the vertical shores or the horizontal wales. Scaffolding materials may not be altered.

Cohesive soil does not crumble, can be excavated with vertical sideslopes, and is plastic when moist. Kickout means the accidental release or failure of a cross brace. Faces or sides means the vertical or inclined earth surfaces formed as a result of excavation work. Employee training must be provided. Safety and Health Regulations for Construction.

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Moist soil means a condition in which a soil looks and feels damp. Unconfined compressive strength means the load per unit area at which a soil will fail in compression.