Screw channel for cross-furring and for furring walls must have what feature to receive screws?

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Study for the California Lathing and Plastering Contractor (C-35 License) Exam. Prepare with flashcards and multiple choice questions, each offering hints and explanations. Excel in your exam with confidence!

Multiple Choice

Screw channel for cross-furring and for furring walls must have what feature to receive screws?

Explanation:
The face of a screw channel used with cross-furring and furring walls must be perforated so screws can bite and grip. The holes provide a true bite for the screw threads, letting the channel be securely anchored to the structure and preventing it from slipping or pulling loose as plaster or wallboard is attached. A smooth face wouldn’t provide that screw engagement, and a knurled edge or ribbed back doesn’t give the necessary opening for fastening.

The face of a screw channel used with cross-furring and furring walls must be perforated so screws can bite and grip. The holes provide a true bite for the screw threads, letting the channel be securely anchored to the structure and preventing it from slipping or pulling loose as plaster or wallboard is attached. A smooth face wouldn’t provide that screw engagement, and a knurled edge or ribbed back doesn’t give the necessary opening for fastening.

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