ft. 66 lbs. … It may be a span of 3 feet, for example. (i.e., a 12-inch wide shelf at 1/2" thick can bear 345 pounds, the same shelf at 2' wide can bear 81 pounds and a 3' span can only bear 33 pounds). Then, trace down that column until you reach a number that's greater than or equal to the pounds per square feet of load you calculated in Step 5. I'm looking to buy a glass shelf that 35"W x 18" D and and probably 1/4" thick. If you have a bookcase or something similar, the width of the opening of the case is what you want. Two to three times stronger than annealed glass, heat-treated glass undergoes a rapid cooling process that partially tempers the material. © Copyright 2020 Hearst Communications, Inc. Annealed glass shelves ¼-inch thick won’t hold anything heavier than about 70 pounds, even with a lot of strong supports. Change ), You are commenting using your Twitter account. Look to the left margin to see that your glass shelf needs to be 1/4 inch thick. For example, 10 pounds divided by 2 square feet is 5 pounds per square foot. Divide the weight from the previous step, by the total square footage you calculated in Step 3. A standard shelf measurement of 3-foot by-1-inch-by-12-inch should bear the following weights: 313 pounds for oak shelving, 200 pounds for pine, 129 pounds for … First, at the top of the chart find the distance in feet—1 through 5—between supports that corresponds to your shelf's span. You should plan for the worst possible scenario with the weight. May 22, 2006, KnowledgeBase: Cabinetmaking: Custom Cabinet Construction. For example, 3 feet times 2/3 of a foot (8 inches) is 2 square feet.
Forum Responses Weigh on a scale the contents you plan to put on the shelf. Typically, manufacturers use only toughened glass for shelves, casings and other architectural purposes, since decorative glass, such as cathedral or obscure glass, aren’t strong enough to support much weight. Question
21 cu. These measurements are for annealed glass only supported at the two far ends. How much weight can a Glass Shelf hold? If your span between supports falls between these—18 inches, for example—then round up to the next higher number of feet—or 2 feet. 18 cu. ( Log Out /
For example, a 1-inch-thick length of tempered glass holds almost 200 pounds if its supports are 5 feet apart; the same glass shelf can hold more than 5,000 pounds if supports are 1 foot apart. Change ), You are commenting using your Google account. The amount of weight your shelf can safely hold depends on the type of glass. I'd figure out how to get a center support in there somewhere, or build a wood or metal picture framework and use that to buttress the glass.
28 lbs. Change ), You are commenting using your Facebook account. Top Freezer Refrigerator - Shelf and Door Bin Weight Limits. Even though thicker, heat-treated glass can better support heavy weights, breakage is still a risk if you improperly support the shelves’ bracketing. He has been writing about technology and the business of technology since 1999. While thicker pieces of glass can safely support large amounts of weight, thick glass with short distances between support brackets can support even more. Your 42" is an awful long area to trust to just glass. For example, if your shelf is 3 feet wide and needs to carry 5 pounds per square foot, start at the column with "3" at the top, and trace down until you hit the second row, which reads "5". ( Log Out / That would depend on how wide the case is and what will be put on it. Your example, being 42" wide, means that you're probably at the (pardon the pun) break-even point.
The amount of weight your shelf can safely hold depends on the type of glass. Generally, thicker glass is better able to hold heavier weights without shattering. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Author: Change ), http://www.ehow.com/info_12041295_much-weight-can-put-glass-shelf.html. 19 cu. How to Determine the Linear Feet for Buying Lumber, How to Select a Waterfall Pump for Your Pond. Tempered glass, like heat-treated glass, is rapidly cooled after heating; it’s four times stronger than annealed glass. Most commercial glass shelves are between 3/8-inch to 5/8-inch thick, which allows for moderately heavy items, such as a couple of books, while keeping support distance reasonable. Consider getting glass thicker than you need, just in case. His articles have appeared on many sites, including GameDev.net, KenSharpe.net, and eHow. I need to put glass shelves in a frameless 42" upper dish cabinet but I am nervous about their weight-bearing capacity. L.P. Klages is an entrepreneur and software developer, concentrating on information theory, software user experience, and mathematical modeling. I plan to use shelf brackets on all … Freezer Door. The shorter the span, the more weight the shelf can carry, or the thinner glass can be to bear the same weight. Float glass, also called annealed glass, is a more durable glass type; it undergoes a heating and slow cooling process to strengthen the surface by removing interior tensions. For example, you may want to place several decorative objects on the shelf, totaling 10 lbs. (Cabinetmaking Forum) Measure the depth of the glass you need. Their chart demonstrated how the weight bearing capacity decreases as the span widens. A 3/8" piece of glass that long will look nice and light but will likely only be able to bear a maximum of 3-5 pounds of weight. The shorter the span, the more weight the shelf can carry, or the thinner glass can be to bear the same weight. This will be constrained by the depth of your bookshelf, but a typical one for a shelf is 8 inches. (i.e., a 12-inch wide shelf at 1/2" thick can bear 345 pounds, the same shelf at 2' wide can bear 81 pounds and a 3' span can only bear 33 pounds). Fresh Food Door. Include the weight of the shelves along with the weight of the load they’ll carry when you purchase your installation hardware. ( Log Out / Klages attended Jacksonville University in Jacksonville, Fla. How Big a Table Base Do You Need for a 54-Inch Glass Tabletop? Fortunately, glass strength is well established, so finding out how thick your shelving needs to be is as simple as taking a few measurements and looking up the capacity in a chart. ft. 60 lbs. The stress on the glass over extended periods will increase the risk of breakage.
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