Greg DiBernardo

Joists (or studs) have flanges whose edges turn inward, whereas track’s flanges are straight. Track is sized so that the joists fit between its flanges.

In deck building, two steel shapes are used: joists (or studs) and track (see illustration). Track is sized slightly larger so that joists fit inside it, and it’s used like a rim joist or ledger at the ends of joists.

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