May2016

THE HIGH RISE... from page 31.

• Air infiltration • Energy conservation • Sound attenuation

include cranes, helicopters and other means of removing existing and installing new equipment. This type of con- struction results in extensive Reserve Studies and budgets, which result in high maintenance fees. A summary of the typical components that make up the common and limited common elements of a high rise follows. Building Envelope The basic function of the envelope or enclosure of a build- ing or structure is to protect the conditioned interior spaces from the surrounding environment. In a condominium, the majority of the building envelope is a part of either the common or limited common elements. It includes the roofs and facades, which also include the windows and doors, promenade decks, balconies etc. The building envelope is designed to reflect the following conditions;

• Fire safety • Durability • Aesthetics

One of the most prob- lem prone areas of the building exterior are those constructed of concrete. If a concrete surface is not protected and moisture is absorbed into the concrete, this will result in rusting of the reinforcing steel which

(above) Location of a “pitch pocket” where the handrail post is embedded in the concrete balcony. Moisture has entered the pocket causing rusting of the steel and cracking of the concrete.

will cause expansion of the steel and cracking of the con- crete which will allow for additional infiltration. This condi- tion typically occurs in the following areas: 1. Balcony surfaces which are generally limited common elements and the responsibility of the association. In many

• Structural integrity • Moisture infiltration

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