Another typical cross section of a green roof design. Vegetation Substrate Drainage-, filter- and protection- layer Enkadrain Roof sealing layer Separating fleece Heat insulation Vapour barrier House top / fabric
- Possible materials for soil reinforcement Most used: STEEL POLYMERS (PET, PP, PE-HD, AR, PVA) - Main design questions: What are the soil-reinforcement interaction parameters ? What is the long term design strength (TLTDS)of the reinforcement ?
- Possible materials for soil reinforcement Most used: STEEL POLYMERS (PET, PP, PE-HD, AR, PVA) - Main design questions: What are the soil-reinforcement interaction parameters ? What is the long term design strength (TLTDS)of the reinforcement ?
In the construction of waste containments there is an economic advantage of using geosynthetics products. As seen in the first picture if you use traditional clay and gravel layers in the landfill you can have about 5000 m3 of volume. But as seen in the second picture if geosynthetics materials are used in the waste disposal area a gain of extra volume will be about ...
Below 2 typical roof garden sections. These are only to give an idea. Of course the designs change depending on the needs in the project. The upper with conventional design. For drainage 2 nonwoven geotextile (filter fabric) layer and gravel in between were used on top of the waterproofing layer. (mineral drainage layer) Heavy and cost more to take the gravel to the roof. Bigger ...
where: t = consolidation period (years) D = diameter of drained soil cylinder (m) d = equivalent diameter of drain (m) Ch = horizontal consolidation coefficient (m2/year) Uh = average horizontal consolidation degree
d = equivalent diameter of PVD b = width of PVD
VERTICAL DRAINAGE DESIGNS An assessment of the effect of vertical drains on the consolidation process may be made using the method proposed by Kjellman. This method is based on the assumption that the drains are placed in a regular pattern and that each drain serves a cylindrical soil column of exactly the same length as the drain (colbonddrain) . it is assumed that the increase ...