32 00 00 Exterior Improvements

Category Archives: 32 00 00 Exterior Improvements

Making ‘Impossible’ ADA Slopes Possible: Predictable concrete flatness techniques

All images courtesy Space Options

To some, it may seem impossible to meet the flatness required by the Americans with Disabilities Act’s (ADA’s) 2.1 percent maximum slope for random traffic floors, landings, walkways, sidewalks, curb ramps, entrances, exit ways, ramps, and intersections at walkways. However, predictable concrete flatness techniques are achievable, provided the design/construction team follows certain practices and engages in specific strategies.

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Designing Plaza Hardscapes: Considerations from insulation and waterproofing to structural support

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Plaza construction typically incorporates various products from different manufacturers intended to provide the thermal resistance, water management, structural capacity, and wearing surface needed to meet a particular project’s requirements. This article discusses the importance of evaluating the strength and stiffness characteristics of a plaza system, particularly when heavy loading is anticipated. Designs that do not properly account for overall system strength and stiffness are vulnerable to damage, potentially resulting in cracking and displacement of the hardscape materials, reduction of drainage capacity, and reduced service life of the plaza.

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Vegetative Roof Waterproofing for Long-term Performance

Photos courtesy Baystate Medical Center

This article reviews the general advantages—and challenges—of green roofs, including how they fail. It reviews strategies for overcoming those challenges and provides advice for achieving long-term performance from a construction perspective, with an emphasis on waterproofing. Several types of green roof systems and assemblies are discussed, including bituminous, rubberized asphalt, and liquid-applied resin membrane systems.

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