definitionCrawlspaces vent the underside of a building and thereby prevent the moulding of dry wooden floors. However, with the introduction of concrete slabs, such ventilation is no longer necessary and compared to crawlspaces provides several benefits for water management. If concrete slabs are used, groundwater tables will no longer have an impact on the structure. As a result it becomes possible to increase the variability of the groundwater table, which results in an increased water retention capacity in the area. This reduces the chance of flooding and increases the water availability in during periods of drought
(Climateapp, Building without a crawlspace, accessed on Sept. 2016).
Co-benefits and impactsA reduction in subsidence, improved isolation of the building and reduction in humidity are co-benefits that improve the liveability and durability of the building (Climateapp, Building without a crawlspace, accessed on Sept. 2016). Buildings that have no crawlspace require a lower drainage level. The groundwater level can remain the same, or need only be lowered a little.
(Urban Green-Blue Grids for sustainable and resilient cities, Building without a crwlspace, accessed on Sept. 2016)
Last modified: Sept. 19, 2016, 6:49 a.m.