| dc.description.abstract | With the rapid increase of population in Taiwan, the environment that originally had the ability to retain water and regulate the hydrological cycle has been continuously replaced by the impervious pavement, the purpose of installing permeable and water-retention facilities in the construction base can not only reduce the flood disaster caused by heavy rainfall, it can also relieve the urban water cycle problem and reduce the urban heat island effect.
According to the research results, the water permeability of the soil is related to the selection and setting of permeable and water-retention facilities. When the soil layer is backfilled soil and sand layer, green land or covered land has the highest proportion in the permeable and water-retention facilities. If the soil layer is clay or high plasticity clay layer, the garden soil is the most commonly used for rainwater interception.
In the construction cost analysis, grassland or grass ditch has the lowest cost.
Therefore, grassland or grass ditch, permeable pavement, and garden soil rainwater interception are the most commonly used water-permeable and water-retention facilities in construction projects.
New Taipei City reduces rainfall duration to 1 hour, as a result, the water retention capacity of permeable water retention facilities has been greatly reduced, to meet the regulations, it is bound to increase the originally planned permeable and water-retention facilities.
In New Taipei City, limited by the area of the building base, it is difficult to increase the space of the permeable and water-retention facilities, and the construction cost will rise, but detention basins and rainwater reclaiming capacity can be included in permeable water retention facilities. The most economical way is to set up the raft space as detention basins and as rainwater reclaiming capacity, to meet the regulations.
The revision and revision of Green Building in 2015 are aimed at the adjustment of the formula coefficient of special water conservation projects. Although the water retention capacity has been greatly reduced, it can avoid the problem that the actual water retention effect cannot be achieved due to environmental factors in actual use.
Expecting this paper will allow civil construction projects to refer to the selection of permeable and water-retention facilities during the design stage, to meet practical needs, and facilitate sustainable development. | en_US |