Partition runner for use as tracks in solid plaster partitions must be formed or punched from galvanized steel at least No. gauge?

Partition runner for use as tracks in solid plaster partitions must be formed or punched from galvanized steel at least No. gauge?

• A. 24
• B. 26
• C. 28
• D. 30

Answer: (B)

The key idea here is the strength and durability of the track used for solid plaster partitions. The partition runner serves as the top and bottom track that anchors the plaster and keeps the studs aligned. Because it sits in a damp plaster environment and must resist the pressure of the plaster while not deforming during installation, it needs to be made from galvanized steel that is thick enough to stay rigid. The requirement sets a minimum thickness—twenty-six gauge. That level of thickness gives adequate stiffness to resist bending or bowing under plaster loads and handling, while still being workable to form or punch into the required track shape. Gauges thinner than this would be too flexible and could distort, compromising the plaster finish and alignment. Thicker gauges would meet the minimum requirement but aren’t necessary to specify as the minimum. Galvanizing adds corrosion resistance, which is important in plaster applications where moisture and lime can be present, helping the track last longer.

The key idea here is the strength and durability of the track used for solid plaster partitions. The partition runner serves as the top and bottom track that anchors the plaster and keeps the studs aligned. Because it sits in a damp plaster environment and must resist the pressure of the plaster while not deforming during installation, it needs to be made from galvanized steel that is thick enough to stay rigid.

The requirement sets a minimum thickness—twenty-six gauge. That level of thickness gives adequate stiffness to resist bending or bowing under plaster loads and handling, while still being workable to form or punch into the required track shape. Gauges thinner than this would be too flexible and could distort, compromising the plaster finish and alignment. Thicker gauges would meet the minimum requirement but aren’t necessary to specify as the minimum.

Galvanizing adds corrosion resistance, which is important in plaster applications where moisture and lime can be present, helping the track last longer.