Structural Implications of Green Roofs, Terraces, and Walls

摘要

As green roofs, terraces, and walls are becoming more common, structural engineers appear to be unaware of the structural issues involved and how to address them. Green roofs, terraces, and walls are an architectural/mechanical approach that tackles the sustainable design issues of storm water runoff, reduction of building energy use, and an opportunity to provide usable space to building occupants. Structural engineers must understand the structural implications of such approaches with regards to static loads, dynamic loads, serviceability, durability, and anchorage.rnThis document describes the structural implications of intensive green roofs/terraces, extensive green roofs, and green walls. An in depth discussion on assumed dead loads, live loads, seismic loads, wind effects, load combinations, serviceability concerns, and ASTM standards is provided. An analysis of tree loading, sloped roofs, seismic anchorage of green roofs, and recommended structural design specifications and strategies will also be presented. Lastly, strategies utilizing green roofs within the context of the sustainable metric systems such as USBGC's LEED rating system will be addressed. This document will provide a resource for engineers looking to easily, safely, and effectively facilitate the integration of green roofs into their projects.