Final answer:
Tail joists can be secured by nails, screws, or bolts, depending on building codes and design preferences. All three types of fasteners provide strength and stability to the structure.
Step-by-step explanation:
The question asks about securing tail joists, which are the framing components in floor construction. Tail joists should always be secured by nails, screws, or bolts. These fasteners provide the necessary strength and stability to a building's structure. While all three types of fasteners are acceptable, the choice depends on the specific requirements of the building code and the design preferences of the architect or structural engineer.
Nails are commonly used for their ease of installation and holding power, screws provide additional withdrawal resistance, and bolts are often used for heavy-duty or load-bearing connections.