Knowledge Builders

how do you measure a countertop for radius

by Elyse Torphy I Published 3 years ago Updated 2 years ago
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If you should need to measure a radius corner, or are gathering measurements for your new worktop, our easy-to-follow instructions should provide all the information you require:

  1. Identify your tangent points (see diagram). These are the points at which the straight edges of the rectangular worktop meet the curved edge, and both points are equidistant from the existing right-angular corner. ...
  2. The distance from the tangent point to the point where the two dotted tangent lines meet is the radius. ...
  3. Measure the radius line.

How to Figure a Radius Corner Dimension. To figure a true quarter corner radius, use a piece of paper and run one edge along one edge of the furniture (A in the example) and the other edge along the other edge (C in the example). Now simply mark the paper where the radius begins and measure to the corner of the paper.

Full Answer

How do you measure the length of a countertop?

Use your tape measure to measure the countertop length from wall to wall (in inches), not just from one edge of your current countertop to the other. Write down the length in the appropriate space on your scale drawing or piece paper whichever case may be. Measure this twice, just to make sure it’s accurate!

How do you measure the radius of a corner?

To figure a radius corner, use a piece of paper and run one edge along one edge of the furniture and the other edge along the other edge. Now simply mark the paper where the radius begins and measure to the corner of the paper. Double check by measuring both the edges. Also if there is more than one rounded corner measure those as well. Loading...

What is the maximum radius corner radius for a countertop?

With a standard 1-1/2″ overhang we use a maximum of 1″ radius corners. Depending on the overall design and the cabinet layout, we can make it only 1/4″ radius (which we call “soft” corner) just to take away the “sharpness” of the corner. Below you will find some options for your countertop radius corners.

How do I order worktops with radius corners?

Measure the radius line. To order worktops with radius corners via our Online Bespoke Worktop Tool, simply select your timber and choose the dimensions required, and then click the Radius Corner tab on the toolbar at the top of your screen.

What to keep in mind when measuring countertops?

How big is a slab of granite counter top?

How many square feet is 12x12?

Do all counter tops come in rectangular shapes?

Do you need half slabs for kitchen countertops?

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What is a radius on a countertop?

Radius corners refer to the degree of “roundness” the countertop corners will have “soft” corners are the corners that are exposed to traffic areas or where people walk. With a standard 1 1/2” overhang a maximum 1” corner radius can be used.

How do you measure a radius worktop?

0:000:47Dulles Glass | How to measure a radius corner - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe radius of the rounded corner is the distance from the inside corner of the framing square toMoreThe radius of the rounded corner is the distance from the inside corner of the framing square to where the glass touches the edge of the framing square.

How is a radius measured?

If you take a framing square and place it so that it is along the edges of your corners (see image) and measure from where the curve starts to the corner of the square, that measurement will be the radius of your cushion's corners.

How do I calculate my countertop size?

To measure your countertops, start by measuring the length of all counter tops, base cabinets, and island. Also include the inches of back splash. Now measure the width of the counter tops and multiply the total length of the counter tops by the width in inches.

How do you use a radius gauge?

1:473:04How to use Fillet Gauges? | Radius Gauges | - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo that the light can pass through the gap if there is existed. If there is a gap then change theMoreSo that the light can pass through the gap if there is existed. If there is a gap then change the blade and check it with the adjacent blade repeat this process for until we get a perfect match.

How do you make a radius?

0:326:56How to Make an Arch (Calculating the Radius) - YouTubeYouTubeStart of suggested clipEnd of suggested clipYou can draw any circle or any part of a circle a straight line from one surface to another surfaceMoreYou can draw any circle or any part of a circle a straight line from one surface to another surface in a circle is called a chord.

How are curved surfaces measured?

1:022:04Measuring on a curved surface - YouTubeYouTubeStart of suggested clipEnd of suggested clipIt's a fabric tape measure you can get at most fabric stores and you can pull it on to a curve.MoreIt's a fabric tape measure you can get at most fabric stores and you can pull it on to a curve.

How do you measure round objects?

0:211:21How To Take A Diameter Measurement - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd I'm using a soft ended tape measure. And I look at where the end of the tape measure is meetingMoreAnd I'm using a soft ended tape measure. And I look at where the end of the tape measure is meeting here and that's the diameter which is the measurement I'll use to make the cushion. Cover.

How do you find the radius of a curved surface?

2:003:25How to Measure the Radius of a Horizontal Curve - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo for measuring that you can measure this actually in the fold as well on the center out of theMoreSo for measuring that you can measure this actually in the fold as well on the center out of the road take a measuring tape of 100 feet and then at the midpoint measure.

How much should a countertop overhang?

about 1 1/2 inchesA countertop overhang provides a lip that extends beyond the front of your cabinets. The purpose of a standard overhang (usually about 1 1/2 inches) is to prevent liquid spills from dribbling down the face of your cabinets and to keep crumbs from finding their way into the drawers and cupboards below.

Why do you divide by 144 to get square footage?

This is done by dividing by 144. The reason is because 1 ft = 12 in, (1 ft)2 = (12 in)2 = 144 in2. A second way is to convert both the length and the width to feet by dividing each by 12, and then multiply these together to attain the same result. Example: Given a table 48 in.

How do you measure for new laminate countertops?

Measure 3 feet on the wall from the corner and 4 feet on the other side and mark both measurements. Measure the cross distance between the two wall points. A perfect 90 wall corner should indicate 5 feet (60). A- If your measurement is greater than 60 1/4″ or less than 59 3/4″, note this on your measurements.

How do you find the radius without a radius gauge?

First, set your protractor to 90 degrees and place it over the curve. For example, if you are measuring the curve of a bathtub, place the protractor on the outside of the curve. Next, take note of the measurement of where the curve touches the ruler. Now, you've just found the radius of the curve!

How do you measure the radius of a profile projector?

For measuring the diameter and radius, there are concentric circle marks, for measuring angles, there are radial marks, and for both. In addition, some of the scales are written in a grid to see the XY coordinate values. Both are placed on the screen and measured by matching them with the projected image.

How do you find the radius of a cylinder?

The radius of a cylinder(r) = √(V / π × h), where V is the volume of a cylinder, h is the height of the cylinder, and π(Pi) is a mathematical constant with an approximate value of 3.14.

How do you measure countertops for replacement?

Here is how to measure the kitchen countertop:Step 1: Draw a rough drawing of the countertop. ... Step 2: Breakdown the countertop into sections. ... Step 3: Measure the countertop. ... Step 4: Multiply the length and the width. ... Step 5: Add up all the rectangles and squares.

How to measure countertop size?

They’re easy to measure. You just take the dimensional length and width of each and convert it to a square foot figure.

What is the measurement system for countertop?

An important consideration is that all American countertop measurements use the Imperial system. That’s inches and feet as well as fractions of each. You won’t hear or use metric measurements like centimeters or meters. That’s the European system and doesn’t apply in the United States.

How to get a quote for a kitchen?

Additional Notes to Get an Accurate Quote 1 Supply them with digital photos as well as your scaled drawing. 2 Tell them what countertop edges need finishing. 3 Tell them the type of finishing profile you’d like. 4 Give them your sink, cooktop sizes and centerline measurements. 5 Mark your dishwasher location. Dishwashers affect seam location. 6 Let them know if your range is a free-standing or slide-in model.

How many inches on a tape measure?

It’s so easy to make a mistake or invert numbers from a tape measure. 34 inches and 43 inches on the tape get inverted all the time, even by the best craftspeople. There are standard measurements or sizes used across the cabinet and countertop industry.

What does a helper do when measuring countertops?

Helper: There’s nothing like another set of hands and eyes when it comes to measuring countertops. Your helper can hold the tape end solid while you stretch and record. But, make sure you stay on the reading end while your helper holds the tape at zero. Ask any carpenter or countertop installer what the smart end and dumb end of the tape measure are. This is a simple operating procedure, but keeps you consistent and far less likely to err.

How to label a rectangle?

Transfer each measurement to your graph paper. It’s helpful to label each rectangle with a letter such as “A,” “B” and so forth. That lets you keep track of each zone and makes it easier to describe the layout to your countertop supplier. Also, at this point, keep your fractions written as 1/4, 1/2 or 3/4. You’ll convert them to decimals once you start calculating final square footage.

How high should a backsplash be?

Typical backsplash heights are either three or four inches. Unless, of course, you want a full height backsplash. In that case, you’ll need to measure the entire wall area from the top of the finished counter surface to the cabinet underside. Remember, changing your backsplash length or height will affect your estimate.

How to find the tangent points of a radius?

More simply, and for our purposes, the tangent points are the locations at which the straight line of the rectangle and the curvature meet (see Diagram 1). You should be able to determine this visually. It would be useful to make a marker of this point on the surface.

How to lay metal at right angles?

Lay a flat strip of metal (a metal ruler would be ideal) at right angles to this edge, against the adjacent edge (i.e. in the position of the vertical red line in Diagram 2 [below]). Allow it to extend past the end of the surface.

What to do if your worktop has overhang?

If your worktop has overhang the radius size needs to be increased accordingly, so don’t forget to factor this in to your figures! All you need to do is add the desired overhang to the radius.

When was the last update for custom kitchen worktops?

The most recent update was on 14th March 2018.

Do you need measurements for radius corner?

If you opt for the fashionable radius corner option within our bespoke service you may need to supply some measurements (though we also cut to standard supplied manufacturer’s radii). However, if you are trying to match your kitchen worktop to a curved corner already present in your space — say a door or a cabinet — please supply us with the model number and we can do our best to identify the measurements ourselves.

Can you order radius corners?

If you want to order a worktop featuring radius corners, we recommend the use of our Online Bespoke Worktop Tool. This tool makes it incredibly easy to design, price and order custom worktops in any of our timbers, whilst helping to speed-up the entire ordering process, too. Any worktop services ordered through the tool are also subject to a 10% discount, making our custom worktops great value for money.

How to measure radius corner?

If you should need to measure a radius corner, or are gathering measurements for your new worktop, our easy-to-follow instructions should provide all the information you require: 1 Identify your tangent points (see diagram). These are the points at which the straight edges of the rectangular worktop meet the curved edge, and both points are equidistant from the existing right-angular corner. The easiest way to record this is to use a Carpenter’s Square, and mark the tangents points with a pencil if necessary. 2 The distance from the tangent point to the point where the two dotted tangent lines meet is the radius. Using a Carpenter’s Square again, identify the meeting point of the two tangent lines. If you do not have a Carpenter’s Square, place a ruler perpendicular to the worktop edge at both tangent points and identify where the two tangent lines meet (it may be necessary to do this a few times to ensure accuracy). 3 Measure the radius line.

How to find the radius of a tangent line?

The distance from the tangent point to the point where the two dotted tangent lines meet is the radius. Using a Carpenter’s Square again, identify the meeting point of the two tangent lines. If you do not have a Carpenter’s Square, place a ruler perpendicular to the worktop edge at both tangent points and identify where the two tangent lines meet (it may be necessary to do this a few times to ensure accuracy).

Do undermount sinks have curved corners?

Internal radius corners can also be found on sink cut-outs. Whilst overmounted sinks do not usually require curved corners, undermounted sinks will be accompanied by measurements so that you can calculate the dimensions for the cut-out.

How to measure countertop length?

Use your tape measure to measure the countertop length from wall to wall (in inches), not just from one edge of your current countertop to the other.

How to take measurements of countertop space?

Then follow these steps to take accurate measurements of the countertop space: Draw a to-scale diagram of your countertop space on the paper (preferably graphing paper). In the drawing, don’t forget to include the backsplash areas as well. If graph paper is not handy, you can use any plain paper. On your drawing, make sure to include ...

How deep should a countertop be?

Measure the depth of the countertops from the wall, but keep in mind, the standard countertop depth is usually 25.5 inches for a granite countertop; this is the common overhang from standard 24-inch cabinets.

How to calculate square footage of backsplash?

As for the backsplash, don’t forget to calculate that as well. Use the following calculation to get your estimate: 1 Height (4 inches, for example) x length (112 inches) = 448 inches 2 448 ÷ 144 = 3.11 square feet

How to find square footage of a house?

To get the square footage, divide 2,856 by 144:

Does Arch City Granite have a diagram?

For custom and unusually-shaped countertops, Arch City Granite has some example diagrams you can view for guidance on correctly recording all of your measurements. These are all examples of countertops we have installed here in the St. Louis, MO area. These should help you design the drawing and take the measurements correctly.

Do you include the kitchen sink in a drawing?

On your drawing, make sure to include the spaces for your sink, cooktop, bar sink etc. Some home owners think that sink or cooktop areas need to be excluded from the measurement. But it is not true measurement because the sink or cook top cutouts are done in the entire countertop.

What do you need for countertop estimation?

For countertop estimation, you will need a detailed diagram (plan view) of the entire job. This diagram does not need to be to scale. The measure person will make accurate templates and drawings.

How deep are kitchen base cabinets?

Kitchen base cabinets are generally 24″ in depth. This is the case in our sample diagram. To that dimension (24”) you need to add the 1 ¾” overhang on the exposed edges. This will increase the depth of the top from 24” to 25 ¾”. To make math simple, we normally round up to 26”.

How to calculate total square footage of a job?

To calculate the total job square footage you need to add the total countertop and backsplash square footage.

What is backsplash on a counter top?

Backsplashes help transition the counter top to the wall and provide protection from spills getting behind the counters and onto walls.

How long is a granite slab?

A typical granite slab is 9′ x 5′. This dimension limits the length of a countertop without putting in a seam. Therefore, it is not recommended to make countertops longer than 100” without a seam, or without checking with the fabricator for exact slab sizes.

How many walls are there in a kitchen cabinet?

In it you can see where each cabinet is located, the overall length of the cabinets and their widths, that there are 2 walls, and where the cooktop, sink, refrigerator, and dishwasher will be located. This diagram shows all cabinet base placements in the kitchen along with where the cook top and sink will be placed.

What is the most common scale used in drawing?

The most common scale that we see is the quarter-inch scale . This is where 1⁄4 inch on the diagram equals 1 foot in real life. There are several ways that this may be displayed in the key:

What to keep in mind when measuring countertops?

Something to keep in mind when measuring countertops is that the stone comes in large rectangular slabs which are then cut into pieces and shaped for your kitchen. Because of this, measurements must be thought of in terms of rectangle pieces.

How big is a slab of granite counter top?

Things to Remember When Measuring and Budgeting for Counter-tops: 1. The average slab size is 120×55” (or about 41 square feet). Some stone types come in jumbo slabs as well. This is important to know because counter-top materials are sold by the slab. Unless you have a small kitchen, you’ll likely need 1.5 slabs.

How many square feet is 12x12?

A square foot is 12” x 12” = 144. So let’s divide 6250 by 144 to get our final square footage of 43.403.

Do all counter tops come in rectangular shapes?

Even though not all counter tops come in rectangular shapes, the principles of measurements remain roughly the same. If you wanted a corner sink or a ledge like the example below and to the left, the fabricators will try to cut as much as possible into one solid piece.

Do you need half slabs for kitchen countertops?

Some countertops are sold by the half-slab, depending on the color. If your color doesn’t come in half slabs and you need 1.5 for your kitchen, you will need two whole slabs so budget accordingly. 2. Don’t forget the backsplash.

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