Which of the following are examples of caught in or between hazards?
Which of the following are examples of caught in or between hazards?
Caught-in or –Between hazards cause crushing injuries when a person is squeezed, caught, crushed, pinched, or compressed between two or more objects. This may include: Being crushed in equipment • Being crushed between mashing objects or a moving and stationary object • Being crushed between two or more moving objects.
What is a caught in and caught between hazard?
According to OSHA, caught-in or – between hazards are defined as: Injuries resulting from a person being squeezed, caught, crushed, pinched, or compressed between two or more objects, or between parts of an object.
Which of the following is an example of a struck by hazard?
There are four common struck-by hazards in construction: struck-by flying objects, struck-by falling objects, struck-by swinging objects and struck-by rolling objects.
What type of machinery can create a caught in Hazard?
Types of Caught-in or -between Hazards machinery which has unguarded moving parts or is not locked out during maintenance; unprotected excavations and trenches; heavy equipment that tips over, collapsing walls during demolition; and. working between moving materials and immovable structures, vehicles, or equipment.
What type of hazard can cause MSDs?
Ergonomic. Ergonomic related musculoskeletal disorders (MSDs) account for 33% of all employee injury and illness cases. These types of hazards occur when repetitive work, the type of work, or a certain position strains the body. These are the most difficult hazards to spot because problems build up over time.
What are the three main protection methods against cave-ins?
To prevent cave-ins:
- SLOPE or bench trench walls.
- SHORE trench walls with supports, or.
- SHIELD trench walls with trench boxes.
What is the greatest danger associated with excavations?
- The greatest risk in an excavation is a cave-in.
- Employees can be protected through sloping, shielding, and shoring the excavation.
- A competent person is responsible to inspect the excavation.
- Other excavation hazards include water accumulation, oxygen deficiency, toxic fumes, falls, and mobile equipment.
Which of the following is a way to protect yourself when working around excavations?
Which of the following is a way to protect yourself when working around excavations? Slope or bench the sides of the excavation and support the sides of the excavation. What is the minimum distance that excavation materials, tools, and other supplies be kept back from the excavation’s edge?
What is the basic type of shoring?
Shoring is the provision of a support system for trench faces used to prevent movement of soil, underground utilities, roadways, and foundations. Shoring systems consist of posts, wales, struts, and sheeting. There are two basic types of shoring, timber and aluminum hydraulic.
What is shoring and its types?
Shoring is the process of temporarily supporting a building, vessel, structure, or trench with shores (props) when in danger of collapse or during repairs or alterations. Shoring comes from shore, a timber or metal prop. Shoring may be vertical, angled, or horizontal.
What is a shoring system?
Shoring Systems are temporary structural elements that serve to transfer loads during the various stages of construction. Props made of steel or aluminium are used which are often connected by means of frames to form shoring towers or slab tables.
What is meant by shoring?
Shoring, form of prop or support, usually temporary, that is used during the repair or original construction of buildings and in excavations. Temporary support may be required, for example, to relieve the load on a masonry wall while it is repaired or reinforced.
How is shoring done?
Shoring Techniques in Building Construction Raking Shores consist of one or more timbers sloping between the face of the structure to be supported and the ground. The most effective support is given if the raker meets the wall at an angle of 60 to 70 degrees.
What does falsework mean?
temporary construction work
Why do we need shoring?
Its many benefits include: Enhanced safety — The construction of basements and foundations requires excavation. Protecting the workers in those temporary trenches and holes calls for shoring. By holding the earthen walls up and preventing collapses, it ensures a safer work site.
How many types of shoring are there?
5
At what depth do you need shoring?
Trenches 5 feet (1.5 meters) deep or greater require a protective system unless the excavation is made entirely in stable rock. If less than 5 feet deep, a competent person may determine that a protective system is not required.
What is the more expensive and difficult method of shoring?
The most expensive trench support methods are shoring methods such as soldier piles, sheet pile, or modular shoring. 3. Soil conditions: Open cut can be made in most soil conditions where ground water can be handled. If obstructions are common the trench production will be slowed for any support system.
What is the difference between shoring and shielding?
Shoring should not be confused with shielding by means of trench shields. Shoring is designed to prevent collapse, whilst shielding is only designed to protect workers should collapse occur. Most professionals agree that shoring is the safer approach of the two.
What is Type C soil?
Type C soil is the least stable type of soil. Type C includes granular soils in which particles don’t stick together and cohesive soils with a low unconfined compressive strength; 0.5 tons per square foot or less. Examples of Type C soil include gravel, and sand.
What are the major types of excavation hazards in construction?
Top 5 excavation safety hazards
- Cave-ins. Trench collapses kill an average of two workers every month, making this a serious threat to worker safety.
- Falls and falling loads. Workers and work equipment can fall into an excavated area.
- Hazardous atmospheres.
- Mobile equipment.
- Hitting utility lines.
What are the hazard in excavation?
Hazards Associated With Excavations
- the collapse of the sides;
- materials falling on workers in the excavation;
- falls of people and/or vehicles into the excavation;
- workers being struck by the plant;
- specialist equipment such as pneumatic drills;
- hazardous substances, particularly near the site of current or former industrial processes;
What are the types of excavation?
Excavation by Material
- Topsoil Excavation. As the name suggests, this type of excavation involves the removal of the exposed or the topmost area of the earth’s surface.
- Rock Excavation.
- Muck Excavation.
- Earth Excavation.
- Cut and Fill Excavation.
- Trench Excavation.
- Basement Excavation.
- Dredging.
What are the steps of excavation?
The entire excavation process includes:
- setting out corner benchmarks.
- surveying ground and top levels.
- excavation to the approved depth.
- dressing the loose soil.
- making up to cut off level.
- the construction of dewatering wells and interconnecting trenches.
- making boundaries of the building.
What tools are used in excavation?
What excavation equipment might be necessary for your project?
- Backhoe loader. These have an adjustable shovel in the front and a bucket in the back.
- Bulldozer. You can think of this piece of machinery as the monster of the excavation industry.
- Crawler loader.
- Excavator.
- Skid-steer loader.
- Trencher.
What is Type D excavation?
201.11. 02 Type D – Common – Common material is all other excavation materials of a nature not included in the foregoing description of Type A, regardless of the nature or condition of the material, or the method used to excavate or remove.
What is cut and fill excavation?
Cut and fill excavation is also known as excavation and embankment. It’s a process where excavators move and place volumes of material to create optimal terrain for a road, railway or canal.
Can you bench Type C soil?
Appendix B does not permit an employer to bench a type C soil excavation. Therefore, it is not safe to cut steps into a slope of type C soil because the soil’s lack of cohesion is likely to cause the steps to crumble when an employee steps on them.