Site Access and Right of Ways in Subsurface Construction

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What is the primary purpose of using matting on a worksite?

To ensure the safety of overhead utility lines

To provide a stable surface for heavy machinery to operate on soft or uneven ground (correct)

To prevent slips, landslides, and erosion on steep slopes

To protect the ground from damage, particularly in environmentally sensitive areas

What is the primary hazard associated with unlevel ground conditions on a worksite?

Increased risk of instability and rollovers for heavy machinery (correct)

Increased risk of slips and falls for workers

Increased risk of overhead utility line strikes

Increased risk of damage to underground utilities

What is the purpose of establishing a Minimum Approach Distance (MAD) zone for overhead utilities on a worksite?

To provide a safe area for the staging of equipment and materials

To allow for the safe movement of vehicles and machinery around the worksite

To mark the location of underground utilities to prevent damage

To ensure that workers and equipment maintain a safe distance from energized conductors (correct)

What is the first step in the encroachment process for addressing overhead electrical hazards on a worksite?

Conduct an initial assessment to determine the distance and voltage of the line, max reach of equipment, and minimum clearance distance Signup and view all the answers

What is the purpose of potholing, or daylighting, on a worksite?

To locate and mark the presence of underground utilities and structures Signup and view all the answers

What is the primary goal of the equipment staging process at a drill shaft jobsite?

To ensure that all equipment and materials are easily accessible for the various project stages Signup and view all the answers

What is the primary benefit of establishing and communicating a planned layout of the site from start to finish during the site set-up and layout process?

It allows for the efficient use of the available space on the site, minimizing congestion and unnecessary moves Signup and view all the answers

What is the primary purpose of marking the location of underground utilities on a worksite?

To prevent damage to the utilities during excavation or construction activities Signup and view all the answers

What is the primary benefit of using matting on a worksite with steep slopes?

It helps to prevent slips, landslides, and erosion on the steep slopes Signup and view all the answers

What is the primary purpose of establishing a Minimum Approach Distance (MAD) zone for overhead utilities on a worksite?

To ensure that workers and equipment maintain a safe distance from energized conductors Signup and view all the answers

What is the purpose of Rights-of-Way (ROWs) in subsurface construction?

To grant the right to use, access, or transit a piece of property for construction Signup and view all the answers

How are work limits typically defined along the ROWs?

By using staking and flagging Signup and view all the answers

What do site access conditions refer to in subsurface construction?

Physical and geotechnical conditions along the ROW and access routes Signup and view all the answers

When constructing utility lines, how far can site access extend?

Several miles encountering multiple conditions Signup and view all the answers

What purpose do matting and soft soils serve in subsurface construction?

To provide stable ground in soft soil conditions Signup and view all the answers

How are ROWs described in terms of land use?

As multiple properties or jurisdictions Signup and view all the answers

What is the purpose of setting up a Restricted Access Zone (RAZ) at a subsurface construction jobsite?

To prevent unauthorized access and protect workers from potential hazards Signup and view all the answers

What is the primary function of delineating and marking a drill rig swing radius area?

To prevent employees from entering hazardous areas around the drill rig Signup and view all the answers

How should employees be secured when entering the Restricted Access Zone (RAZ) at a subsurface construction jobsite?

With a full-body harness tied off to a suitable anchorage using a self-retracting lifeline Signup and view all the answers

What is the purpose of setting up control lines, warning lines, or barriers around the drill rig swing radius area?

To prevent employees from entering hazardous areas around the drill rig Signup and view all the answers

Why is it important to clearly mark deep excavation areas on construction sites?

To warn of associated risks and prevent accidental falls Signup and view all the answers

What should be achieved by installing signage at a construction site?

Ensuring the safety of all workers and visitors by identifying potential hazards Signup and view all the answers

Why should a drill pad be leveled before setting up a drill rig?

To create a flat, stable surface for the equipment Signup and view all the answers

What is the purpose of establishing a Restricted Access Zone (RAZ) at least six feet from the edge of a drilled hole?

To limit access and enhance worker safety during shaft construction Signup and view all the answers

Why is it essential to delineate and mark a spoils pile area?

To clearly identify where excavated material is stored safely and prevent accidents. Signup and view all the answers

What safety measure ensures that workers are not struck, pinched, or crushed by a rotating drill rig boom arm?

Marking control lines, warning lines, or barriers around the swing radius area. Signup and view all the answers

What is the crucial step to prevent electrical shock hazards when working with a drill rig?

Grounding the drill rig Signup and view all the answers

Which potential refers to the voltage difference between an energized object and a person touching it?

Touch potential Signup and view all the answers

What is the purpose of a foundation survey center pin in a drill rig setup?

To confirm the exact location for foundation installation Signup and view all the answers

Why is it important to securely fasten the tooling to the bottom of the Kelly bar during drilling?

To prevent drill rig accidents Signup and view all the answers

How is 'step potential' defined in terms of electrical safety?

The potential difference between two feet along an electrical gradient Signup and view all the answers

What is used to create a direct pathway for electric current to follow in the event of a fault?

Grounding wire from the drill rig Signup and view all the answers

Why are rebar cages typically transported using heavy machinery like cranes or forklifts?

To ensure safe transport of heavy loads Signup and view all the answers

What safety measure should be considered when transporting concrete at a construction site?

Securing the path of transport and load properly Signup and view all the answers

When would a person experience a 'touch potential' according to electrical safety guidelines?

When standing with feet at different points along a voltage gradient Signup and view all the answers

Why is confirming the foundation survey center pin placement critical in drill rig setup?

To ensure accurate location for foundation installation per survey results Signup and view all the answers