Site Access and Right of Ways in Subsurface Construction
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Questions and Answers

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?

<p>Conduct an initial assessment to determine the distance and voltage of the line, max reach of equipment, and minimum clearance distance (B)</p> Signup and view all the answers

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

<p>To locate and mark the presence of underground utilities and structures (D)</p> Signup and view all the answers

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

<p>To ensure that all equipment and materials are easily accessible for the various project stages (D)</p> 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?

<p>It allows for the efficient use of the available space on the site, minimizing congestion and unnecessary moves (D)</p> Signup and view all the answers

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

<p>To prevent damage to the utilities during excavation or construction activities (A)</p> Signup and view all the answers

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

<p>It helps to prevent slips, landslides, and erosion on the steep slopes (B)</p> 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?

<p>To ensure that workers and equipment maintain a safe distance from energized conductors (A)</p> Signup and view all the answers

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

<p>To grant the right to use, access, or transit a piece of property for construction (C)</p> Signup and view all the answers

How are work limits typically defined along the ROWs?

<p>By using staking and flagging (A)</p> Signup and view all the answers

What do site access conditions refer to in subsurface construction?

<p>Physical and geotechnical conditions along the ROW and access routes (C)</p> Signup and view all the answers

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

<p>Several miles encountering multiple conditions (C)</p> Signup and view all the answers

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

<p>To provide stable ground in soft soil conditions (B)</p> Signup and view all the answers

How are ROWs described in terms of land use?

<p>As multiple properties or jurisdictions (C)</p> Signup and view all the answers

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

<p>To prevent unauthorized access and protect workers from potential hazards (A)</p> Signup and view all the answers

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

<p>To prevent employees from entering hazardous areas around the drill rig (A)</p> Signup and view all the answers

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

<p>With a full-body harness tied off to a suitable anchorage using a self-retracting lifeline (A)</p> 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?

<p>To prevent employees from entering hazardous areas around the drill rig (C)</p> Signup and view all the answers

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

<p>To warn of associated risks and prevent accidental falls (D)</p> Signup and view all the answers

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

<p>Ensuring the safety of all workers and visitors by identifying potential hazards (C)</p> Signup and view all the answers

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

<p>To create a flat, stable surface for the equipment (A)</p> 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?

<p>To limit access and enhance worker safety during shaft construction (C)</p> Signup and view all the answers

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

<p>To clearly identify where excavated material is stored safely and prevent accidents. (A)</p> 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?

<p>Marking control lines, warning lines, or barriers around the swing radius area. (B)</p> Signup and view all the answers

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

<p>Grounding the drill rig (C)</p> Signup and view all the answers

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

<p>Touch potential (D)</p> Signup and view all the answers

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

<p>To confirm the exact location for foundation installation (D)</p> Signup and view all the answers

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

<p>To prevent drill rig accidents (C)</p> Signup and view all the answers

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

<p>The potential difference between two feet along an electrical gradient (A)</p> 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?

<p>Grounding wire from the drill rig (C)</p> Signup and view all the answers

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

<p>To ensure safe transport of heavy loads (D)</p> Signup and view all the answers

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

<p>Securing the path of transport and load properly (D)</p> Signup and view all the answers

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

<p>When standing with feet at different points along a voltage gradient (B)</p> Signup and view all the answers

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

<p>To ensure accurate location for foundation installation per survey results (B)</p> Signup and view all the answers

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