Search articles from the Journal of Living Architecture

The Journal of Living Architecture (JLIV) is published exclusive here, on the Living Architecture Monitor website. The magazine will publish the abstract of each published JLIV manuscript in the quarterly issue of the LAM, with a link to the full paper here.

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While much green roof research has been directed towards commercial and industrial buildings, less is known about the sloped roofs of residential buildings. The purpose of this study was to evaluate a pitched residential green roof system and determine its ability to retain stormwater runoff. In order to do this, 18 shingled roof models were constructed on three slope angles – 1°, 20° (5/12 pitch), and 40° (10/12 pitch) of which 9 were randomly fitted with a modular green roof system across three replications. The 42.1% mean stormwater runoff retention for the green roof systems of was significantly greater than the 18.3% for shingled roof decks. A residential product (Steep Paks®) performed within the conventional range of previous stormwater retention studies. The residential green roofs  effectively reduced stormwater runoff during periods of light
precipitation compared to periods of heavy precipitation. No difference was found in percent stormwater runoff retention between the three residential green roof slope angles.

Potted-plants have the potential for improving indoor air quality (IAQ), however there has been little research on the performance of green-walls as indoor biofilters. The aim of this investigation was to compare rates of air pollutant reduction with two commonly used indoor species, and to assess the effects of added substrate airflows on the capacity of green-wall modules to remove two prevalent indoor airborne contaminants - particulate matter (PM), and volatile organic compounds (VOCs), using benzene as model. The species tested were Chlorophytum comosum (Spider Plant) and Epipremnum aureum (Pothos). The results showed that each species could significantly reduce increasing doses of PM, with or without augmented substrate airflow, however benzene removal rates decreased with increasing aeration. The findings provide a first assessment of the ability of green-wall plants to reduce indoor air pollution, and responses to two types of pollutant, particulate and gaseous.