Plumbers use __________ when pouring a horizontal lead joint.

Plumbers use __________ when pouring a horizontal lead joint.

• A. ladle
• B. joint runner
• C. trowel
• D. caulking gun

Answer: (B)

Guiding and shaping the molten lead as it fills a joint is essential for a solid, even seal. A joint runner is designed to run along the joint line and channel the lead smoothly into place, helping maintain the correct depth and form a uniform bead across a horizontal span. This control prevents sagging or gaps as the lead cools, which is crucial for a watertight connection. While a ladle handles transferring molten lead, the runner specifically manages the flow along the joint itself, making the joint consistent from end to end. The remaining tools are intended for other materials or tasks and aren’t suited for shaping lead joints.

Guiding and shaping the molten lead as it fills a joint is essential for a solid, even seal. A joint runner is designed to run along the joint line and channel the lead smoothly into place, helping maintain the correct depth and form a uniform bead across a horizontal span. This control prevents sagging or gaps as the lead cools, which is crucial for a watertight connection. While a ladle handles transferring molten lead, the runner specifically manages the flow along the joint itself, making the joint consistent from end to end. The remaining tools are intended for other materials or tasks and aren’t suited for shaping lead joints.