Abstract
In recent years, ideas such as green roofs gained importance as an alternative for environmental adaptation of society to new ambient conditions. In Bogota city, the roofs at popular neighborhood represent a potential area for their implementation. This present research discusses how the weight of a green roof impacts a self-construction dwelling unit from a structural capacity demand point of view. Green roof weight is a random variable whose normality was investigated through the Shapiro-Wilk goodness of fit. The magnification factors for this dead-like load come from the Nowak-Collins method using the confidence intervals on the mean weight value. The ATC-40 pushover methodology helped in finding the non-linear behavior of a controlled but similar structure as those found in the popular neighborhoods of Bogota city. According to this methodology, damage caused on these structures due to seismic demand increases by the green roof incorporation. However, damage increase is a function of local soil conditions.
Highlights
Over the last few decades, the effects of climate change and environmental degradation left consequences throughout the world
These are generally made of a waterproofing layer to avoid contact between the support structure and biological elements, a drainage layer which allows the passage of water but not solid elements, a filtration layer where the substrate is contained, a layer of substrate and the vegetation layer
In the following part of this document, there is a brief description of a typical SCH in terms of geometry, materials and their constitutive models used to perform non-linear analysis
Summary
Over the last few decades, the effects of climate change and environmental degradation left consequences throughout the world. From a structural perspective on one hand, green roofs can be defined as just one added load on the roof of a house. This load tends to be variable depending on the climate conditions of the area, due to changes in weight of the substrate of plants as saturation can happen. For the present research a Self-Construction-Households (SCH) define an unregulated popular masonry dwelling unit, that in most cases lacks structural design. These SCH constitute a large area in the city for green roof potential implementation. In the municipality of Soacha there was a productive green roof alternative using plastic bottles containers in a house built with modular concrete panels embedded in thin sheet profiles made of galvanized steel
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