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Choice of pattern

Things to remember:

The pattern, i.e. the manner in which the paving stones are assembled, will contribute to the decoration and style of your garden. In fact, the choice of pattern often influences the choice of paving, the form and contours of which (straight or irregular edges) should be adapted to the chosen layout. The width of joints between paving stones depends on the desired finish: 0.4" to 2" (1 to 5 cm) for masonry or sand joints, 2.75" to 4.75" (7 to 12 cm) for grass-covered joints.
In all cases, take care not to make them too large, even if they are to be grassed over, because you risk diminishing the stone effect.

Note that for patterns with thin and regular joints, it is preferable to choose paving stones with surfaces that are as flat and regular as possible.

In pictures

1. 

   Regular "antique" pattern. Joints are continuous in the paving direction.

2. 

   "Roman bond" pattern, with invisible joints. Square or rectangular paving stones are practically flush.

3. 

   "Roman bond" pattern with visible joints. Paving stones are separated by masonry or sand joints, 0.4" to 0.8" (1 to 2 cm) in width.

4. 

   "Crazy paving" pattern, used with irregularly-shaped stones. The width of joints can vary.

5. 

   Laid flat or on a strip, the blocks can be set out in straight or diagonal forms.

6. 

   Joints between stones will be cemented, filled in with sand or filled with soil to be grassed over.

Did you know?

Sedimentary rocks are the result of the accumulation and compacting of mineral debris (i.e. other stones), organic debris (animal remains and vegetation, fossils), or chemical precipitation.

They are exogenous rocks, i.e. rocks which are formed on the surface of the Earth. Sedimentary rocks are present on 75% of the surface of the Earth's continents, but when considering its crust as a whole (from the surface to a depth of 22 miles (35 km)), they only represent 5% of its total volume.

The main sedimentary rocks are:

• sandstone
• sand
• siltstone
• loess
• clay
• shale
• coal
• oil
• limestone
• chalk
• etc.

SOURCE: Wikipedia