Every time you move a piece of glass, you risk breaking it. Because picture and clerestory windows, mirrors, and shower doors are often custom items, they take time to remake if they get broken. Smart, safe, and slow are the key words for moving and installing glass, whether you do it yourself or are keeping an eye on a new sub. Here are a few things to keep in mind when moving, staging, storing, and installing glass.
Moving
Plan the route. Know exactly how you're getting the glass from the truck to the installation point. Check door heights, and clear the path of all debris. Map out turns, and lay wood blocks anywhere the glass might be set down; under no circumstances should a piece of glass touch the ground.
Move methodically. Any time you see a glazier running or moving hastily, your spider senses should tingle. A good glazier is always one step ahead in his mind, mapping out the path of least resistance for the glass and preventing potential breakage situations before they occur.
Use the proper carrying technique. Glass can't support its own weight. Always carry it upright on edge like you would carry drywall or plywood. If the glass is heavy, use a suction cup for your lower hand; use your upper hand without a cup as a guide hand to maintain balance. Always wear gloves with rubber coated palms. If the path from the truck to the window is smooth, use a glass dolly. 
Moving big glass up staging requires four workers: two to lift, two to receive.
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