ASCE 30-14-2014 Guideline for Condition Assessment of the Building Envelope.pdf

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1、 ASCE STANDARD ASCE/SEI 30-14 American Society of Civil Engineers Guideline for Condition Assessment of the Building Envelope This document uses both the International System of Units (SI) and customary units. Published by the American Society of Civil Engineers Library of Congress Cataloging-in-Pub

2、lication Data Guideline for condition assessment of the building envelope. pages cm (ASCE standard ASCE/SEI ; 30-14) ISBN 978-0-7844-1325-8 (print : alk. paper) ISBN 978-0-7844-7827-1 (ebook) 1. Exterior wallsEvaluationStandards. 2. Building inspectionStandards. I. American Society of Civil Engineer

3、s. TH2235.G85 2014 690.12dc23 2013049279 Published by American Society of Civil Engineers 1801 Alexander Bell Drive Reston, Virginia, 20191-4382 www.asce.org/bookstore | ascelibrary.org This standard was developed by a consensus standards development process that has been accredited by the American

4、National Standards Institute (ANSI). Accreditation by ANSI, a voluntary accreditation body representing public and private sector standards development organizations in the United States and abroad, signifi es that the standards development process used by ASCE has met the ANSI requirements for open

5、ness, balance, consensus, and due process. While ASCE s process is designed to promote standards that refl ect a fair and reasoned consensus among all interested participants, while preserving the public health, safety, and welfare that is paramount to its mission, ASCE has not made an independent a

6、ssessment of and does not warrant the accuracy, completeness, suitability, or utility of any information, apparatus, product, or process discussed herein. ASCE does not intend, nor should anyone interpret, ASCE s standards to replace the sound judgment of a competent professional, having knowledge a

7、nd experience in the appropriate fi eld(s) of practice, nor to substitute for the standard of care required of such professionals in interpreting and applying the contents of this standard. ASCE has no authority to enforce compliance with its standards and does not undertake to certify products for

8、compliance or to render any professional services to any person or entity. ASCE disclaims any and all liability for any personal injury, property damage, fi nancial loss, or other damages of any nature whatsoever, including without limitation any direct, indirect, special, exemplary, or consequentia

9、l damages, resulting from any person s use of, or reliance on, this standard. Any individual who relies on this standard assumes full responsibility for such use. ASCE and American Society of Civil EngineersRegistered in U.S. Patent and Trademark Offi ce. Photocopies and permissions. Permission to p

10、hotocopy or reproduce material from ASCE publications can be obtained by sending an e-mail to permissionsasce.org or by locating a title in ASCE s online database ( http:/cedb.asce.org ) and using the “Permission to Reuse” link. Errata: Errata, if any, can be found at http:/dx.doi.org/10.1061/978078

11、4413258 . Copyright 2014 by the American Society of Civil Engineers. All Rights Reserved. ISBN 978-0-7844-1325-8 (paper) ISBN 978-0-7844-7827-1 (PDF) Manufactured in the United States of America. 21 20 19 18 17 16 15 14 1 2 3 4 5 iiiSTANDARDS ASCE 28-00 Standard Practice for Direct Design of Precast

12、 Concrete Box Sections for Jacking in Trenchless Construction ASCE/SEI/SFPE 29-05 Standard Calculation Methods for Structural Fire Protection SEI/ASCE 30-14 Guideline for Condition Assessment of the Building Envelope SEI/ASCE 31-03 Seismic Evaluation of Existing Buildings SEI/ASCE 32-01 Design and C

13、onstruction of Frost-Protected Shallow Foundations EWRI/ASCE 33-09 Comprehensive Transboundary International Water Quality Management Agreement EWRI/ASCE 34-01 Standard Guidelines for Artifi cial Recharge of Ground Water EWRI/ASCE 35-01 Guidelines for Quality Assurance of Installed Fine-Pore Aeratio

14、n Equipment CI/ASCE 36-01 Standard Construction Guidelines for Microtunneling SEI/ASCE 37-02 Design Loads on Structures during Construction CI/ASCE 38-02 Standard Guideline for the Collection and Depiction of Existing Subsurface Utility Data EWRI/ASCE 39-03 Standard Practice for the Design and Opera

15、tion of Hail Suppression Projects ASCE/EWRI 40-03 Regulated Riparian Model Water Code ASCE/SEI 41-06 Seismic Rehabilitation of Existing Buildings ASCE/EWRI 42-04 Standard Practice for the Design and Operation of Precipitation Enhancement Projects ASCE/SEI 43-05 Seismic Design Criteria for Structures

16、, Systems, and Components in Nuclear Facilities ASCE/EWRI 44-05 Standard Practice for the Design and Operation of Supercooled Fog Dispersal Projects ASCE/EWRI 45-05 Standard Guidelines for the Design of Urban Stormwater Systems ASCE/EWRI 46-05 Standard Guidelines for the Installation of Urban Stormw

17、ater Systems ASCE/EWRI 47-05 Standard Guidelines for the Operation and Maintenance of Urban Stormwater Systems ASCE/SEI 48-11 Design of Steel Transmission Pole Structures ASCE/SEI 49-12 Wind Tunnel Testing for Buildings and Other Structures ASCE/EWRI 50-08 Standard Guideline for Fitting Saturated Hy

18、draulic Conductivity Using Probability Density Functions ASCE/EWRI 51-08 Standard Guideline for Calculating the Effective Saturated Hydraulic Conductivity ASCE/SEI 52-10 Design of Fiberglass-Reinforced Plastic (FRP) Stacks ASCE/G-I 53-10 Compaction Grouting Consensus Guide ASCE/EWRI 54-10 Standard G

19、uideline for Geostatistical Estimation and Block-Averaging of Homogeneous and Isotropic Saturated Hydraulic Conductivity ASCE/SEI 55-10 Tensile Membrane Structures ANSI/ASCE/EWRI 56-10 Guidelines for the Physical Security of Water Utilities ANSI/ASCE/EWRI 57-10 Guidelines for the Physical Security o

20、f Wastewater/Stormwater Utilities ASCE/T modifi cations may be made to the content for con-dition assessments performed by staff personnel of public agen-cies and multibuilding owners for management of facilities. This standard establishes an assessment procedure including investigation, testing met

21、hods, and a form for the report of the condition assessment. It assists the investigator in developing a logical approach to the assessment of the building envelope to focus on fundamental defects rather than outward symptoms. The possibility of encountering hazardous materials, such as lead-based p

22、aint and asbestos-containing materials, should be considered. Because any evaluation involves “professional judgment” and contains factors that cannot be readily defi ned and standardized, a section providing guidance is also included. This section must be used by the design professional as part of

23、the evaluation. 1.2 PURPOSE OF ASSESSMENT Condition assessment of an existing building envelope may be undertaken for a number of purposes. These purposes may include developing a performance report, establishing building serviceability, planning for maintenance or repair, code compli-ance, life saf

24、ety, durability, historic preservation, or a number of special purposes based on the specifi c building and its current or proposed occupancy or function. 1.3 TYPES OF ASSESSMENT 1.3.1 Cursory Assessment. This is a visual overview of the general condition of the building envelope. It is often used f

25、or screening multiple buildings to establish priorities for mainte-nance and repair or further study. 1.3.2 Preliminary Assessment. A preliminary condition as-sessment is usually limited in scope. It consists of a site visit for familiarization and to identify problem areas, a review of avail-able d

26、ocuments, an interview of involved parties, and a prelimi-nary report of fi ndings and recommendations. 2 STANDARD 30-14increasing the scope because of discoveries during the initial part of the investigation (see Section 3.2). 1.6.2 Compensation. The client and the design professional shall mutuall

27、y agree upon compensation for the services speci-fi ed in Section 1.6.1. The agreement shall specify reimbursable expenses, such as testing laboratory costs. Compensation provi-sions shall consider that after the review of the preliminary data, additional investigations may be required, thereby chan

28、ging the scope of the project. 1.6.3 Authority and Accessibility. The agreement shall clearly identify the agreed scope of work and authorize the design pro-fessional to perform the necessary investigation and tests and shall ensure access to the site, the building, the various portions of the build

29、ing requiring investigation, and drawings and documents required to perform the condition assessment. Responsibility for removal and repairs to fi nishes and building elements that may result from the evaluation, test, or inspection procedures should be identifi ed. 1.6.4 Liability. The extent of li

30、ability, if any, expressly accepted by the design professional shall be stated in the agreement. Scope limitations, physical constraints, and undisclosed condi-tions may still leave unknowns after the assessment of an exist-ing building. Appropriate and carefully worded disclaimers are important to

31、limit liability to the specifi c scope of the assess-ment. Requirements for liability insurance coverage shall be clearly documented. 1.6.5 Agreements or Contracts. Such arrangements with pub-lic agencies or multibuilding owners may be in their format. However, the scope and other considerations mus

32、t still be addressed explicitly within the body of the document or as an exhibit. 1.6.6 Legal Obligations. The professional in responsible charge has legal and/or professional obligations under governing law regarding unsafe conditions that are discovered and a duty to notify specifi ed parties when

33、 such conditions are encountered. These requirements vary among jurisdictions having authority. It is the professional s responsibility to know what type of notifi ca-tion is required and whom he or she is to notify as required by the jurisdiction where the building is located. 1.7 DEFINITIONS The f

34、ollowing defi nitions are provided to establish uniform understanding of some selected terms as they are used in this standard. Words not defi ned but used in this standard shall have the meanings given in Webster s Third New International Dictionary (Unabridged), Merriam-Webster, Springfi eld, MA,

35、1993.ASSESSMENT Systematic collection and analysis of data, documentation, evaluation, and recommendations regarding the various portions of an existing building envelope that are the subject of the investigation. ATTRIBUTES Building envelope performance features or characteristics such as integrity

36、, serviceability, and aesthetic considerations. BACKUP That part of a wall system behind the exterior facing (elements). BARRIER WALL An exterior wall system designed to prevent penetration of moisture through the wall because of its mass or impermeable surface components. BUILDING An enclosed or pa

37、rtially enclosed structure for occupancy by personnel, animals, material, or equipment; any structure used or intended for supporting or sheltering any use or occupancy. BUILDING ENVELOPE That portion of a building sepa-rating its interior from the outside atmosphere and its exterior surroundings. M

38、any systems are capable of transmitting external loads or forces to the building structure. The envelope may have aesthetic qualities. Appendages such as chimneys, porches, decks, balconies, porte cocheres, stairs, and fi re escapes may be included in a broad defi nition of the building envelope. BU

39、ILDING MATERIALS CONSERVATOR A profes-sional who specializes in protection and preservation of build-ing materials. Usage herein would denote a person skilled in the assessment, evaluation, and remediation of building materials. CAULK To make watertight and/or airtight by fi lling or sealing. CAVITY

40、 WALL A multiwythe noncomposite masonry wall with a continuous air space within the wall (with or without insulation) that is tied together with metal ties. CLADDING Non-load-bearing exterior surface of a build-ing. (See BUILDING ENVELOPE.) CLIENT The person or persons for whom the condition assessm

41、ent of the building envelope is being performed. A gov-ernment agency, corporation, association, or other group could be the client. COMPONENT (NONSTRUCTURAL) A portion of the building envelope able to resist applied lateral and/or vertical loads and its own weight. This portion includes elements su

42、ch as parapets, ornamentation, cornices, overhangs, equipment, fl agpoles, chimneys, panel walls, and windows. COMPONENT (STRUCTURAL) A portion of a building or envelope system designed to resist applied lateral and/or verti-cal loads, including those imposed by other structural or non-structural co

43、mponents and its own weight. These components include roof decks, walls, exterior elevator cores and stair shafts, and foundation walls, for example. COMPOSITE WALL A wall built of a combination of two or more different materials bonded together, one forming the backup and the other the facing eleme

44、nts. COMPUTATIONAL ANALYSIS A quantitative evalua-tion of a building envelope component or system by or under the direction of a design professional. CONNECTION The fastening between components or other parts of the building envelope, which either by design or as a result of construction is capable

45、of transferring loads or forces. A “connector” is a mechanical connecting device. CONSULTANT A person with special knowledge engaged to deal with specifi c aspects of the assessment and evaluation. CURTAIN WALL A nonbearing enclosure wall not neces-sarily supported at each story. (See PANEL WALL.) D

46、ESIGN PROFESSIONAL An architect or engineer licensed or registered to practice in the governmental jurisdiction in which the building is located. DESTRUCTIVE TESTING Testing properties of materi-als, components, or systems to a point at and beyond which the element, component, or system can no longe

47、r fulfi ll its function. Destructive testing of portions of a building envelope may be carried out on the building envelope in situ or on components removed and tested in the laboratory. DRAINAGE PLANE The building envelope assembly that provides a plane within the water drainage pathway to the exte

48、-rior of the building or to a design collection point. DRAINAGE WALL Exterior wall system intended to intercept water in a drainage course or cavity between inner and outer surfaces and divert it to the outside. (See CAVITY WALL.) Guideline for Condition Assessment of the Building Envelope 3ELEMENT

49、One of the constituent materials or parts of a component or subcomponent. EVALUATION The process of determining the adequacy of the building envelope system or component for its intended use. Evaluation by its nature implies the use of personal and subjective judgment by those functioning in the capacity of experts. EXPERT A person who, by education, training, and experi-ence, has special knowledge and s