For our first step, we laid out the rectangle which most closely approximates
the patio's finished shape. Notice in Figure 1 how the actual border
(the dotted line) doesn't follow the rectangle exactly; we added the
variations later.
To accurately
lay pavers, it's important to establish parallel sides and 90-degree
corners. You can make an accurate 90-degree angle using the "3-4-5"
triangle method (Fig. 1). Begin by measuring 3-ft. along a straight
base line, in this case the house. Then with two measuring tapes and
a helper to hold the ends, measure 4 ft. from one end of the 3-ft.
line and 5 ft. from the other. Drive a stake where the 4- and 5-ft.
marks meet. The angle opposite the 5-ft. side will be 90 degrees.
With a string line, extend the 4-ft. side of the triangle to establish
the patio width (For large patios, you can be more accurate by doubling
the triangle sides to 6-8-10). Drive stakes at four corners.
Second,
establish an adequate patio slope so rainwater will drain. Find a
long, very straight 2x4 on which to set your level, and establish
a level plane between the corner stakes. Intermediate stakes placed
every 6 to 8 ft. simplify this process, and later will be used as
guides when making the patio perfectly flat. Mark the slop on the
stakes on the low side of the patio, allowing about 1 in. drop for
every 8 ft. away from the house. Mark the proper level on the intermediate
stakes as well.
Third,
decide your patio height. We wanted ours to be 8 in. below the first
tread of the a stairway. The patio height should be even with, or
slightly above, the surrounding ground so that water drains off into
the grass.
Finally,
excavate the patio slope deeply enough for the packed aggregate base,
sand and pavers. Use the reference lines on the stakes to properly
slope the bed.
