Prepare the substrate for a terrace
Prepare the substrate for a terrace
This one has also continued enjoyment of a self-paved terrace, not only the planning but also the execution must be carried out carefully. This includes necessarily the proper application of the Foundation which consists of several layers of material and was compacted several times.
Without a fixed compacted base for the patio concrete slabs or paving stones sink and washed away. Subsidence and material damage is then inevitable. Therefore, one should make a plan and understand what materials and preparations are necessary, how to mark out the patio area, makes the excavation, puts the curbs and fills the base course.
Only then can the joy can be obtained at the newly created terrace long and can be spent on many pleasant hours with friends or family.
Contents: Prepare ground for Terrace
- How to prepare the surface?
- As stake out the area?
- How to plan the foundation for the terrace?
- How to carry out the excavation?
- How to perform the edging?
- How to create the foundation for the terrace?
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How to prepare the surface?
Before the construction of a terrace, one should better have it delivered up to the working area in the garden the necessary materials as possible to the front door. For a stone terrace in addition to decking and still -einfassung crushed stone or gravel as a material for the terrace surface required. For staking the area you need a guide, metal or wooden pegs, a hammer, a carpenter's level and a longer wooden board. Spade, shovel, pick and wheelbarrow may be important for the excavation. Curbs, a hammer and concrete are necessary for setting the edging.
With a hand masher can compact the base of the terrace. However you want to work fast, effectively and professionally, you should at builders merchants or via the tool hire (see Industry Fernsprechbuch) borrow a vibrating plate. The effort is worth it, because with a simple hand masher can be hardly create such a solid ground as with this easy-to-use machine.
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As stake out the area?
When building a terrace in the garden, the area should be created so that you have enough space for the subsequent edging. The framed field should therefore correspond to the planned patio area plus 20cm workspace.
It is best to use short wooden or metal stakes that are struck with a hammer into the ground. In a simple rectangular area mostly rich four pegs, which are connected to a guide. The height should be chosen according to the subsequent patch top edge so that it can serve as a guide for laying the patio stones and slabs.
In addition, the guideline for the purpose of rain water drainage should be a gap between one and three percent to the garden involve the house. This is determined by simply placing a spirit level on a longer wooden lath in the form of a longer board and tends accordingly. One percent gradient is a centimeter difference in height per meter.
How to plan the foundation for the terrace?
Choosing the right foundation for the terrace and the corresponding depth of the excavation depends on the strength of the soil, the expected load, the planned underground and the desired decking. The excavation depth should be selected so that the foundation and decking together achieve the desired height of the door threshold, and conclude at the same time flush with the lawn edge.
If one wants to pave a stone patio in the garden, it is sufficient, as a rule, remove about 30 to 35 cm soil for excavation. Then you have enough space, the various layers of the foundation and paving. With terraces, which consist of a continuous concrete slab and are tiled in certain circumstances, one should make an excavation of at least 80 cm. In this type of terrace deeper footings of concrete are in fact required for the base plate.
How to carry out the excavation?
For the excavation of the surface is used with which one to the desired depth removes spade or blade to not stable ground such as clay or topsoil. Many stones or a hard floor available, the use of a pickaxe may be necessary. With the wheelbarrow can then or later transport the collected soil. Either to distribute the ground in the garden or disposed of as organic waste.
The produced during excavation flat ground plane is also called Planum. If the terrace substructure does not already have sufficient strength for the further construction of the terrace, the area must be compacted. This is done with the hand tamper or vibrating plate. There must be no bumps or depressions where rainwater can collect. In addition, the substructure of the terrace should proceed according to the selected gradient. To control you can use the wooden board and the spirit level again.
How to perform the edging?
With an edge enclosure, preventing the decking and the underlying layers of the terrace substructure slide away laterally. Therefore lawn square stones from concrete or natural stone, paving stones, palisades, L-stones or wall slabs are set and in an earth-moist concrete bed of 10 to 20 cm thickness are aligned along the previously tensioned guide. In concrete pavers using a rubber hammer, where natural stone can also use a metal hammer.
As a further stabilization of an edge binding curbs or rotor row of paving stones on the outside is additionally accumulated concrete as a back support and festgeklopft. One should make sure that the concrete foundation is not completed high because adjacent lawn during dry periods may yellow otherwise. And if you also want to cut as little as possible when laying the patio stones or bricks, you should choose the position of the edging or the size of the terrace accordingly.
How to create the foundation for the terrace?
Frost protection layer and support layer are applied from gravel or crushed stone (mineral mixture or RCL). They are used for frost protection and the aeration of the soil. In gravel should use a grain size from 0 to 32 mm and schedule a layer thickness of at least 10 cm. Dirt is especially recommended for heavily loaded surfaces, since such a base layer is essential for sound as a gravel base. The ballast should have a grain size from 0 to 45 mm and a layer thickness of 13 cm.
The material for the layers of the base earth-moist werdenh with the slope on the surface spread and compressed several times with a hand tamper or vibrating plate. You should compact the foundation of the terrace at least three times and anfülllen just layer by layer. All layers for the patio paving should remain able to drain, d. H. the natural water cycle should not be interrupted by the foundation.