Decide how big your shelf needs to be. The spacing of your DIY wood shelf brackets will also have a big impact on the strength of your shelf. The formula is: 5 + 1 = 6. Then apply the quick formula for placement of the remaining screws. Single Closet Rod with Integrated Shelving Single Closet Rod with Shelving Components Components ITEM QTY Heavy-Duty Closet Pole 2 Closet Pole Sockets 2 pkgs. Spacing fasteners at equal distances along the length of a workpiece, can be frustrating and time-consuming. Notes. 1. E. Thickness of plywood and length of bracket you are making. shelf spacing calculator, Measure the length of the shelf and determine the spacing for the brackets, take into consideration the shelf material and thickness, also the weight of the items that will be placed upon it. The deflection calculations use average wood stiffness properties of clear, straight-grained samples measured in controlled laboratory conditions (mainly from the U.S. Forest Products Lab). Measure the length of the shelf and determine the spacing for the brackets, take into consideration the shelf material and thickness, also the weight of the items that will be placed upon it.. Mark the position on the wall for the top screw, drill and plug the wall, then secure the upright in place but do not fully tighten the screw. If you are using a 2″ thick shelf board, plan to space your brackets 48″ or less apart. Here’s a quick formula for calculating those distances. Matching shelf brackets that have projecting lugs at the back can be snapped into place along the length of each standard. With a concrete wall (no studs to find) and an 8 foot shelf, I would not stick to 24" spacing unless some other aspect of the shelf system requires it - the end brackets can be in somewhat from the extreme ends and still support the shelf, unless you want to store anvils at the very ends of the shelves. Here’s a quick formula for calculating those distances. Bracket Spacing. Depending on the length of the workpiece and/or the number of fasteners desired, you will sometimes end up with fractional measurements, but the math is still the same. Shelf spacing will generally range from 7 to 15 inches with 8 to 12 inches being common for bookshelves. MatthewD. How to Calculate Even Spacing By Philip Schmidt Hunker may earn compensation through affiliate links in this story. A simple way to avoid the frustration of calculating fractions, is to use a metric tape for all measuring when using this formula. The angle between the wall and shelf measurement, angle "C," we know will be 90 degrees. The overhang of each shelf beyond the end brackets should be kept equal and to a minimum, as a rough guide, no greater than 20% of the distance between brackets. Sheppard Brackets has been in the bracket/floating shelf game for nearly two years. For example, say the wall measurement, side "a" is 12 inches and the shelf measurement side "b" is 8. If you are using a 1″ thick shelf board, space your brackets 36″ or less apart. 1. Ceiling height B. Use the  decided first screw location as your starting point. 2.The eye will notice a deflection of 1/32″ (0.03″) per running foot, or 3/32″ (0.09″) for a 3′ wide bookshelf. Otherwise, you can calculate shelf support angles. Decide the total number of fasteners you plan to install, at any given length. Decide the total number of fasteners you plan to install, at any given length. Chris Marshall shares a reader’s tip for getting paper aligned perfectly on your random orbit sander using a bit of scrap you probably have around your shop. share | improve this answer | follow | edited Sep 4 '15 at 14:09. Shelf Bracket w/Pole Supports 2 Wooden Shelf Board 1 ITEM QTY Heavy-Duty Closet Pole 1 Closet Pole Sockets 1 pkg. Otherwise, you can calculate shelf support angles. Make the mark, then put an X on the far side to denote stud placement: Start of Wall → Helps to estimate your number of brackets. Enter The Sagulator - it's a free online calculator for sag of shelves which is a wonderful tool exactly for these questions.. Running your 2 shelf sizes, the larger shelf span (122 CM) won't hold more than about 2 KG overall without noticeably sagging. Step 1 Measure the distance down the wall you want the support to go, as well as the distance under the shelf you want the support to extend to. Divide the maximum capacity by four to calculate the safe load capacity of the bracket. Mark the position on the wall for the top screw, drill and plug the wall, then secure the upright in place but do not fully tighten the screw. Your actual shelf may be capable of higher loads, depending on these other factors, but you should remain under the safe load. To prevent the case from looking and being top-heavy, use a smaller shelf spacing near the top and a larger one near the bottom. Step 1 Measure the distance down the wall you want the support to go, as well as the distance under the shelf you want the support to extend to. For example: The length of a workpiece is 48″ and you decide to install five screws as fasteners. Shelf Bracket w/Pole Supports 1 Wooden Shelf Board 5 Heavy-Duty Shelf Brackets 10 Heavy-Duty End … Clearance needed above shelf C. Clearance needed below shelf bracket D. Depth of shelf. Also, if you want the first and last screws to be inset a certain distance from each end of the workpiece, subtract the total of these two distances from the workpiece length, first. Dividing this total into the 48″ length, means the five screws should be spaced every 8 inches – at 8″, 16″, 24″, 32″ and 40″. Wax paper has many uses throughout the shop. Add “one” to the fastener total and divide by the length of the workpiece. You may still be able to store fairly heavy objects on shelving materials with a short span limit, but you will need to support the shelf with support brackets …