To start the installation, we are going to need to choose the starting wall, and make a reference line, using this picture as a hint:
Here you can see that green line goes along with the longest line between the sheets of plywood. We gonna need to refer to this line for accuracy.
Now measure the space from the wall to this reference line on both ends of it and in the middle also. If all measurements are even and the wall is straight itself (which happens quite seldom), then it’s a perfect situation, where you can use a wall as a reference line, and simply start from it, without measuring anything else.
That’s easy. But we’ll stick with the situation which takes place much more often: crooked walls. Take a closer look at the picture below:
Put a row of boards along the starting wall tightly. Measure the space like you did before, and choose the shortest space between reference line and the board. Remember that measurement. Let’s pretend it is 2 feet and 4 inches. Now measure 2 feet and 4 inches twice, on both ends of the reference line towards the starting wall. Mark these two spots with a pencil precisely. And finally snap the line. Time for a break!

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May.10,2010

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