SC Glass And Glazing Practice Questions - South Carolina Glass And Glazing Contractor Examination Exam

Why do fabricators often require extra face clearance for large fully tempered lites?

Tempered glass shrinks after installation and needs room to grow thicker Roller-wave bow and edge warp from the tempering process can make the lite thicker in the pocket than its nominal thickness Face clearance replaces the need for bite on tempered glass OSHA requires 1 in of face clearance on every tempered lite

Correct Answer:

Roller-wave bow and edge warp from the tempering process can make the lite thicker in the pocket than its nominal thickness

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