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First, level and compact the topsoil. Intact soil is made ready so as to be non-freezing and supporting. A setting bed to compensate the topsoil height is required. It serves as a levelling layer and to distribute load evenly. The most suitable material is crushed aggregate of 16-32 mm fraction in layer thickness at least 200 mm, compacted with the vibrator.
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The most relevant precondition for success is thorough preparation for work, consisting of precise determination of height, gradient and gradient direction for sewer and drainage. After determining the pavement bond pattern, delimit the pavement edge and measure the admissible deviation degrees when using ranging pickets.
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Parallelism of surfaces is important for subsequent surface arrangement finish.
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The fixed enclosure of the area to be paved will provide for the pavement carrying capacity especially on differences of adjacent surfaces in height or when connecting to consolidated areas. A concrete bed is required as a support for this purpose. The area must be surveyed and delimited with rope precisely.
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The enclosure must be constructed so as to allow for paving stone dimensions plus joint size, which is approximately 3 mm.
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The enclosure must be laid on a concrete bed with narrow joints or with joints to be filled with mortar. The rope is applied on the external side of the area to be paved. The mortar joints are filled with mortar completely.
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After the enclosure is constructed, lay the second layer of crushed aggregate of 100 mm in thickness, consisting of a 8-16 mm fraction material.
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The second layer as the pavement setting bed must be levelled and compacted carefully to obtain an even surface. |
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The bed is ready for setting the pavement. |
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Apply the last, so-called setting layer of 30 mm onto this compacted area, using the 4-8 mm fraction as appropriate. |
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When distributing the bed (gravel) material, use the rope to assist you in achieving uniform layer thickness. |
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The guides having been laid, check the necessary gradient and start the last preparation works. |
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In narrow areas or garden paths, the enclosure edges also serve as guides. Use a wooden batten as a gauge for pavement joints.
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The gravel bed is the best foundation for laying a first-class pavement. |
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Make sure using the rope that the joints are aligned. Use the “fishbone” or “elbow” bond here where the joints are perpendicular to the building.
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In the next step of the setting works, the rope serves for aligning the joint line and width. The requirement for joint width is approx. 3 mm for the following two reasons: they serve for necessary and inevitable compensation within the construction tolerance limits and for compensating for certain brick dimension deviations so that the joints can be filled completely. This is a precondition for surface stability, as only well filled joints will bear horizontal pressure without any damage.
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Also make sure to check the transversal joints of the pavement being set. |
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With this pattern, the completing half stones (bricks) are laid along the enclosure and the building continuously during the setting work. The half stones can be pre-cut when preparing for the work.
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The setting direction is always forward from the already set pavement area. This raw (unfinished) state is based on good preparatory works and preliminary bed compaction.
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To tackle pavement angle cuts along building walls or pavement enclosure, mark the cutting angle with a line....
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...and use disk saw to cut the stones in the required angle. |
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Check and clean the joints and level the set pavement before flushing the joints with the filling material.
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Fill the joints with the same material as used for the setting bed, i.e. gravel sand. The recommended grain size is 2-5 mm. Spread the mixture in a thin layer on the pavement and sweep into the joints.
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The spread filling material is swept or flushed with water into the joints completely. Remove any excess filling material from the pavement before the final compaction of the brick pavement. Be sure to do this, as sprinkling will prevent softening the brick pavement.
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A settling period should be incorporated in the work schedule before compaction. The pavement is compacted using a compactor with a neoprene (rubber) pad to protect the brick pavement against damage. The compactor power should be set to a medium frequency so as not to damage the joint network.
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Before being handed over, the pavement should rest for several days after setting and compaction, being filled with the jointing material several times as required. This will compact (set) the area for overall filling and for preventing joints from deforming.
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