Cast-iron spigot-and-socket joint (water supply): arrange the correct sequence for making the joint from preparation through pouring and caulking.

Introduction / Context:
Spigot-and-socket (bell-and-spigot) joints are traditional for cast-iron water mains. Correct assembly order ensures alignment, sealing, and structural integrity. The process combines mechanical packing with molten lead (historically) or other sealing materials.

Given Data / Assumptions:

• Steps: 1) Wrap tarred gasket/hemp on spigot; 2) Enter spigot into socket; 3) Place joining ring against socket face; 4) Caulk gasket slightly; 5) Pour molten lead and then caulk.
• Objective: establish packing, contain molten lead, and finish by caulking.

Concept / Approach:
Initial centering of the spigot (2) prevents damage to packing. Wrapping gasket (1) before full insertion provides the packing to be driven into the annulus. Slight caulking (4) seats the packing and leaves room for lead. The joining ring (3) forms a dam to retain molten lead, which is then poured and caulked (5) to complete the seal.

Step-by-Step Solution:
(2) Insert/center spigot into socket to align components.(1) Wrap tarred gasket/hemp around spigot to provide packing.(4) Caulk packing slightly to seat it in the joint.(3) Place joining ring to contain molten lead.(5) Pour molten lead and caulk to finish.

Verification / Alternative check:
Standard installation guides show packing, preliminary caulking, setting a yarning/joining ring, then pouring and final caulking.

Why Other Options Are Wrong:

• Sequences that place the ring before preliminary packing or skip preliminary caulking risk leakage or improper seating.

Common Pitfalls:
Over-caulking before setting the ring (reduces space for lead); misalignment before packing.

Final Answer:
2, 1, 4, 3, 5