logging in or signing up safety in excavations presentation Marian Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 4632 Category: Entertainment License: All Rights Reserved Like it (6) Dislike it (0) Added: December 06, 2007 This Presentation is Public Favorites: 2 Presentation Description No description available. Comments Posting comment... By: dumyati0 (3 month(s) ago) greet ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: jmaynard (6 month(s) ago) I am curious why you couldn't just simply post this as downloadable? It is a nice presentation, but there are many such excavation ppt's, so why inconvenience people? Saving..... Post Reply Close Saving..... Edit Comment Close By: Jufic061771 (10 month(s) ago) Hi, great presentaion , will like to see if you can shere the ppt its a great one will help in the training of fellow coworkers, thanks, my email is jjfigueroajr@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: gravy173 (12 month(s) ago) Please will you allow me to download this? Saving..... Post Reply Close Saving..... Edit Comment Close By: bertcorrigan (13 month(s) ago) plz allow me to download Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Safety in Excavations : Safety in Excavations A guided study of understanding the risks and dangers in excavation workTopics to be Discussed : Topics to be Discussed Soil Types Shear Strength Collapse Types Strength Factors Protective Measures Safety in Excavations: Safety in Excavations In General: An employer is required to provide safe means of access to and egress from a work area above or below ground level by means of stair, ladder, runway or ramp. The access way must be well maintained well-lit, clear of obstructions, and be suitable abrasive to ensure firm footing for workers. Safety in Excavations: Safety in Excavations Excavation work cannot commence until the Labour Division has been notified and the employer has received a registration number and has notified public utilities. If the employer does not perform the excavation in accordance with the Construction Industry Safety Regulation of the Workplace Safety and Health Act, the registration may be revoked and the excavation shut down.Safety in Excavations : Safety in Excavations Soil TypesSoil Types: Soil Types Stable Rock Type A Soil Type B Soil Type C Soil Layered Geological Strata Safety in Excavations : Safety in Excavations Shear StrengthShear Strength: Shear Strength “ The capacity of a material to resist the internal and external forces which slide past each other “Shear Strength: Shear Strength Cohesion The stickiness of the soil; a greater amount of clay than sand. Internal Friction A result of particle shape. Safety in Excavations : Safety in Excavations Strength FactorsStrength Factors: Strength Factors Water Vibrations Erosion and Weathering Excavation Depth Slope Steepness Degree of Soil CompactionSafety in Excavations : Safety in Excavations Collapse TypesCollapse Types: Collapse Types Zone of ExposureCollapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Slough – in Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Slough – in Rotation Safety in Excavations : Safety in Excavations Shoring TechniquesShoring Techniques: Shoring Techniques Engineers are often required to design shoring, which is a construction procedure used specifically to maintain the stability of the walls of an excavation and provide protection to workers who may enter the excavation Shoring Techniques: Shoring Techniques Accidental Falling Entry Excavation sites cannot be crowed with anything such as piles of excavated material or excavation equipment which might accidentally fall into the excavation. All work areas adjacent to public walkways must be adequately guarded or barricaded by fences, guardrails or a covering sufficient to prevent persons from falling into the excavation.Shoring Techniques: Shoring Techniques Shafts and Tunnels Due to the specific nature and hazards of the work, a professional engineer may be required to design a support structure for a shaft or tunnel prior to commencement. At least one worker in each work crew must be experienced in the type of work being performed in shaft and tunnel excavations, and at least one worker is required to be trained in first aid.Shoring Techniques: Shoring Techniques Access Way Employers must surround the opening to an underground excavation with a firm, level area and a protective barrier (at least 1 meter in height) surrounding it. The access way must be secured with a cover to prevent unauthorised entry. Access landings, the bottom of shafts and tunnels, and other similar work areas must be kept free of loose mud and other accumulations of debris.Shoring Techniques: Shoring Techniques Atmosphere Every employer must provide a suitable ventilation system in a shaft or tunnel excavation to ensure that there is no lack of oxygen and that concentrations of toxins in the atmosphere are minimised. No employer shall allow internal combustion engines to be used in underground work areas unless the engines are properly engineered to do so. Shoring Techniques: Shoring Techniques Illumination Every employer must provide electrical illumination for the full length of the tunnel and at the face of the excavation where inadequate natural light is present. Where electrical illumination is used in an underground excavation, employers are required to provide an emergency lighting system.Shoring Techniques: Shoring Techniques First Aid in Shafts and Tunnels Employers must ensure that: At least one worker holding a valid first aid certificate must be present during each shift. A first aid kit is provided in the immediate vicinity of the entrance to a shaft or tunnel. A basket stretcher and blankets are provided at each worksite. Workers are instructed in proper underground rescue procedures.Shoring Techniques: Shoring Techniques Flammable and Combustible Hazards Flammable and combustible liquids shall not be used underground unless they are stored in accordance with the Manitoba Fire Code. Effective means for extinguishing a fire in an underground excavation must be provided where combustible or flammable materials may be present.Shoring Techniques: Shoring Techniques Wood SupportShoring Techniques: Shoring Techniques Wood Support Screw Jacks Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Spacing Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Spacing Trench Cages Concluding Remarks: Concluding Remarks Excavation Work is a highly dangerous industry. Safety standards need to be implemented and stringently maintained You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
safety in excavations presentation Marian Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 4632 Category: Entertainment License: All Rights Reserved Like it (6) Dislike it (0) Added: December 06, 2007 This Presentation is Public Favorites: 2 Presentation Description No description available. Comments Posting comment... By: dumyati0 (3 month(s) ago) greet ppt Saving..... Post Reply Close Saving..... Edit Comment Close By: jmaynard (6 month(s) ago) I am curious why you couldn't just simply post this as downloadable? It is a nice presentation, but there are many such excavation ppt's, so why inconvenience people? Saving..... Post Reply Close Saving..... Edit Comment Close By: Jufic061771 (10 month(s) ago) Hi, great presentaion , will like to see if you can shere the ppt its a great one will help in the training of fellow coworkers, thanks, my email is jjfigueroajr@yahoo.com Saving..... Post Reply Close Saving..... Edit Comment Close By: gravy173 (12 month(s) ago) Please will you allow me to download this? Saving..... Post Reply Close Saving..... Edit Comment Close By: bertcorrigan (13 month(s) ago) plz allow me to download Saving..... Post Reply Close Saving..... Edit Comment Close loading.... See all Premium member Presentation Transcript Safety in Excavations : Safety in Excavations A guided study of understanding the risks and dangers in excavation workTopics to be Discussed : Topics to be Discussed Soil Types Shear Strength Collapse Types Strength Factors Protective Measures Safety in Excavations: Safety in Excavations In General: An employer is required to provide safe means of access to and egress from a work area above or below ground level by means of stair, ladder, runway or ramp. The access way must be well maintained well-lit, clear of obstructions, and be suitable abrasive to ensure firm footing for workers. Safety in Excavations: Safety in Excavations Excavation work cannot commence until the Labour Division has been notified and the employer has received a registration number and has notified public utilities. If the employer does not perform the excavation in accordance with the Construction Industry Safety Regulation of the Workplace Safety and Health Act, the registration may be revoked and the excavation shut down.Safety in Excavations : Safety in Excavations Soil TypesSoil Types: Soil Types Stable Rock Type A Soil Type B Soil Type C Soil Layered Geological Strata Safety in Excavations : Safety in Excavations Shear StrengthShear Strength: Shear Strength “ The capacity of a material to resist the internal and external forces which slide past each other “Shear Strength: Shear Strength Cohesion The stickiness of the soil; a greater amount of clay than sand. Internal Friction A result of particle shape. Safety in Excavations : Safety in Excavations Strength FactorsStrength Factors: Strength Factors Water Vibrations Erosion and Weathering Excavation Depth Slope Steepness Degree of Soil CompactionSafety in Excavations : Safety in Excavations Collapse TypesCollapse Types: Collapse Types Zone of ExposureCollapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Slough – in Collapse Types: Collapse Types Zone of Exposure Spoil Pile Slide Side Wall Shear Slough – in Rotation Safety in Excavations : Safety in Excavations Shoring TechniquesShoring Techniques: Shoring Techniques Engineers are often required to design shoring, which is a construction procedure used specifically to maintain the stability of the walls of an excavation and provide protection to workers who may enter the excavation Shoring Techniques: Shoring Techniques Accidental Falling Entry Excavation sites cannot be crowed with anything such as piles of excavated material or excavation equipment which might accidentally fall into the excavation. All work areas adjacent to public walkways must be adequately guarded or barricaded by fences, guardrails or a covering sufficient to prevent persons from falling into the excavation.Shoring Techniques: Shoring Techniques Shafts and Tunnels Due to the specific nature and hazards of the work, a professional engineer may be required to design a support structure for a shaft or tunnel prior to commencement. At least one worker in each work crew must be experienced in the type of work being performed in shaft and tunnel excavations, and at least one worker is required to be trained in first aid.Shoring Techniques: Shoring Techniques Access Way Employers must surround the opening to an underground excavation with a firm, level area and a protective barrier (at least 1 meter in height) surrounding it. The access way must be secured with a cover to prevent unauthorised entry. Access landings, the bottom of shafts and tunnels, and other similar work areas must be kept free of loose mud and other accumulations of debris.Shoring Techniques: Shoring Techniques Atmosphere Every employer must provide a suitable ventilation system in a shaft or tunnel excavation to ensure that there is no lack of oxygen and that concentrations of toxins in the atmosphere are minimised. No employer shall allow internal combustion engines to be used in underground work areas unless the engines are properly engineered to do so. Shoring Techniques: Shoring Techniques Illumination Every employer must provide electrical illumination for the full length of the tunnel and at the face of the excavation where inadequate natural light is present. Where electrical illumination is used in an underground excavation, employers are required to provide an emergency lighting system.Shoring Techniques: Shoring Techniques First Aid in Shafts and Tunnels Employers must ensure that: At least one worker holding a valid first aid certificate must be present during each shift. A first aid kit is provided in the immediate vicinity of the entrance to a shaft or tunnel. A basket stretcher and blankets are provided at each worksite. Workers are instructed in proper underground rescue procedures.Shoring Techniques: Shoring Techniques Flammable and Combustible Hazards Flammable and combustible liquids shall not be used underground unless they are stored in accordance with the Manitoba Fire Code. Effective means for extinguishing a fire in an underground excavation must be provided where combustible or flammable materials may be present.Shoring Techniques: Shoring Techniques Wood SupportShoring Techniques: Shoring Techniques Wood Support Screw Jacks Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Spacing Shoring Techniques: Shoring Techniques Wood Support Screw Jacks Hydraulic Shores Spacing Trench Cages Concluding Remarks: Concluding Remarks Excavation Work is a highly dangerous industry. Safety standards need to be implemented and stringently maintained