DIY Builds
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What is the 3 4 5 rule for squaring corners?

To get a perfectly square corner, you want to aim for a measurement ratio of 3:4:5. In other words, you want a three-foot length on your straight line, a four-foot length on your perpendicular line, and a five-foot length across. If all three measurements are correct, you'll have a perfectly square corner.

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If you’re reading this article, you’re likely laying a square paver patio, driveway, or sidewalk—and you want your corners to be just right. Below, we’ve provided an overview illustration followed by step-by-step instructions. Follow our instructions and you’ll have a perfectly square corner, every time.

3 Steps for a Perfectly Square Corner

As you can see in the illustration below, it’s fairly easy to. The entire process can be broken into three simple steps.

Establish a Straight Line

Establish a Perpendicular Line

Measure & Mark Your Lines

1. Establish a Straight Line

First, establish a straight line parallel to your project. Take a hammer and pound two stakes in the ground past the ends of one side. Be sure to pound your second stake 12 inches past the edge of your project to leave room for Step 2. Then, tie a string between your stakes (learn how to properly tie a string to a stake in DIY with WI our tutorial How to Tie a String to a Stake).

2. Establish a Perpendicular Line

Now you need to establish the perpendicular line. Line up a stake parallel to a perpendicular side of your project, 12 inches behind your other stake, as you see below. Tie off your string. Cross these lines to make a point of intersection. That point of intersection is going to be your corner—and that’s what’s going to be perfectly square. Now, run your perpendicular line. Take a minute to make it as square as your eye can see so you don’t have to make as many adjustments later. After you pounded your stakes in and you’ve tied your string lines, you should have a semi-square corner and string lines running along two sides of your project.

3. Measure & Mark Your Lines

To get a perfectly square corner, you want to aim for a measurement ratio of 3:4:5. In other words, you want a three-foot length on your straight line, a four-foot length on your perpendicular line, and a five-foot length across.

If all three measurements are correct, you’ll have a perfectly square corner.

Take it in bite-sized steps. First, measure three feet on your straight line. Start in the corner and measure out. Once you’ve got three feet, make a mark. Second, measure four feet on your perpendicular line, starting from the corner. Third, stretch your tape measure from one mark to another. It should equal five feet. If not, measure out your triangle again. That’s all it takes! Using this simple three-step process is hands down, the easiest way to make a square corner for your paver project.

Learn how to do every step yourself

Here at Western Interlock, we’re on a mission to take the hard out of hardscaping. That’s why we publish DIY tips, tricks, and step-by-step tutorials at DIYwithWI.com and host a live DIY seminar every month during the summer at one of our manufacturing or distribution facilities. If you have any questions, you can visit our Paving Stone Display at our Manufacturing Facility in Rickreall, OR. Or, give our team of hardscape experts a call at 503-623-9084.

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Can you live in a shed in the backyard?

Generally speaking, living in a shed is not allowed. This is because your standard shed is classed as a 10a building making it non-habitable. Sheds, carports, private garages and similar structures fall under this category.

Question: Am I allowed to live in a shed?

Answer: Maybe

There are a number of reasons why you might be considering the idea of living in a shed. These include: You’ve bought a block of land and are waiting for your main house to be built. You have a block of land and are looking for a cost-effective housing option. You are looking to expand the living space of your current property to accommodate guests, teenagers or elderly parents. You are looking to build an investment shed to accommodate holidaymakers and supplement your income. Sadly, there are also people living in sheds who were left homeless after the Black Summer Bushfires. Whatever the case may be, a livable shed is a smart solution to a myriad of housing problems. Here’s what you need to know about building and living in a shed home.

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