scope:

The intent of this Standard is to provide a guideline and methodology for assessing the condition and performance of existing building envelope systems and components and identifying problematic and dysfunctional elements. It applies equally to a building's envelope or portion whose primary purpose may be to serve as the supporting structural system of the building.The reader may also wish to refer to ASCE 1 ] -Guideline for Structural Condition Assessment of Existing Buildings.This Standard may be a source of comprehensive information for clients such as building owners, prospective purchasers, tenants, regulatory officials, and others.While the Standard is primarily directed toward a consultant-client relationship, modifications may be made to the content for condition assessments performed by staff personnel of public agencies and multi-building owners for management of facilities.

This Standard establishes an assessment procedure including investigation, testing methods, and a form for the report of the condition assessment. It will assist the investigator in developing a logical approach to the assessment of the building envelope in order to focus on fundamental defects rather than outward symptoms. The possibility of encountering hazardous materials, such as lead-based paint and asbestos containing materials, should be considered.

Since any evaluation will involve "professional judgment" and contains factors that cannot be readily defined and standardized, a section providing guidance is also included. This section must be used by the design professional as part of the evaluation.