Envelope Commissioning Presentation 5 25 09

8/3/2019 Envelope Commissioning Presentation 5 25 09

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Building EnvelopeCommissioning

Arlene Lanman, P.E., R.ADirector

OSU Architectural & Engineering Services

www.pp.okstate.edu/arch


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and installed envelope systems

Understand how commissioning

addresses these problems

process to the building envelope

Case study


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=

paid for and are getting quality are

engaging in denial. In far too many

projects, cutting out quality has been

, .

- . ,Costs, HPAC(April, 1998), p. 52.


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Water intrusion

Mold / mildew

Decreased worker productivity


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A recent studyreported that 20-30%of commercial

buildings suffer fromindoor air qualityproblems.

- Ibid., p. 5.


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operating costs for commissioned

buildings are reported at 8-20% lowerthan those of a comparable non-commissioned building.

Building Commissioning, (Washington, D.C.: U.S. General

erv ces m n s ra on , p. . va a e awww.betterbricks.org.


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Responsibility

Quality Assurance


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Review Owners Project Requirements (OPR)

ev ew as s o es gn

Peer Review Design Documents

Commissioning Specifications

Develo Pre-functional Checksheets

Review Contractor Submittals

Functional / Performance Testing

Develop Envelope Materials Manual Verify Training Requirements

-


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Provide Direction toProject Team

Coordinate Scheduling

Updated Throughout

Project

Establish CommissioningPlan


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Commissioning Components

Exterior Below Grade Walls

- -

Exterior Walls

,

Storefronts

Sealants, Control Joints & Flashings


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Commissioning Components

Plaza Decks

Roofs / Garden Roofs

Atria


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Commissioning

Develop Owners Performance

Review Basis of Design (BOD)

Specifications

en y o es espons es Drawing Reviews

on rac or u m a ev ews


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Commissioning

Pre-functional Checklists

Construction Functional Testing Final Report

Can all of these steps be applied to thebuilding envelope?


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Requirements

Many formats including nominal

group technique workshop

Define success criteria for ro ect

Often overlooks envelope


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Requirements (OPR)

Occupant Requirements

Thermal Comfort

Visual Comfort

Acoustics

Requirements

Level of Occupant Control

(Operable Windows, Etc)

Life Safety


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Reduced Energy Costs

Chiller Efficiency

Increased Equipment Life

-


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Durability

Maintainability


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Heat Flow Control

Water Vapor Flow Control

Light, Infrared, Ultraviolet, and Other

Noise and Vibration Control


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Snow

Seismic

Ballistic


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Site Information

Restrictions and Limitations Training Requirements

Warranty Requirements

Quality Requirements Systems

Materials

Construction


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Statistical and Quality Tools

Benchmarking Requirements Operation and Maintenance

Allowable Range of Operation

Applicable Codes and Standards Insurance Requirements

Owner Safety Requirements

Constructability


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MEP basis of design

CxAs first chance to review designers

vision for envelope


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Owners Preference For Materials Or S stems

Initial Cost Im act On Schedule

Acoustical Performance

Thermal Performance Air Leakage

Water Leaka e

Fire Resistance Structural Criteria

Reliability


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Sustainable Desi n

Life Cycle Cost Securit

Acoustical Performance

Warrant Glare Control

Condensation Control

Insulation Methods Glazin Methods

Durability


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Look for ambi uities

Compare design to OPR and BoD

Remember chan e orders and RFIsadd cost to the project!


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Structurally-related failures of building

Major Design Errors

- Drainage planes- Air barriers- Vapor barriers-- Roof

Incompatibility between structure & wall Absence or lack of coordination Material deficiencies


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Hydrothermal Map of North America

Location, Location, Location!

Understanding Vapor

Barriers b LstiburekJ. ASHRAE Journal,2004.


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Review roduct data

Review shop drawings

Compare to OPR and BoD

Must occur in parallel withdesigner review


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-

Checklists su lement the desi n

they do NOT replace the design

Refer to Building Design Standard (BDS)

15995, Commissioning, for pre-functional

checklists


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- Use the desi n drawin s

specs, OPR, and BoD tocreate checklists

Get information to the

contractor in sim le tounderstand language

Convey quality expectations

to contractor Helps the Owner track


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-

Yes or No questions

Yes is always the

correct answer No indicates a

deficienc Keep it simple


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-

Is the vapor barrier polyethylene with a

Are vapor barrier layers installed with 6 of

Are edges sealed with tape along the entirelength of lap?

Are edges turned up to within of top ofslab?


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Site Observation Visits

Periodic site visit to verify installation

Document deficiencies

Be specific, take photos

Meet with contractor to discuss

findings

minimize schedule impact


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Existin test rocedures ASTM

Thermal imaging Develop new test procedures


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Pro ect did not

included envelopecommissionin

Lack of vapor

barrier wasdetected afterwalls were finished

Major cost andschedule im act torepair


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If Cx process is successful, no

deficiencies found Should not be used strictly as a punch-


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If Cx process is successful, no

deficiencies found Should not be used strictly as a punch-


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Operations and MaintenanceManual Verification

Commissioning Forms

Templates Record Drawings (include Cx)

eg n rans er ay O&M Following Submittal Involve Operations

ersonne ar y


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Responsibilities during first year of

warranty include:

Perform seasonal and/or deferred

Conduct lessons learned workshop

ev ew warran y ems w ac yoperations staff


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Southeast

High containment Laboratory space

exterior of building

Envelope commissioning not included


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Re airs set ro ect back 6 weeks

Several BSL-3 suites were torn downand reconstructed


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Estimated cost of envelo e

commissioning $17k

envelope $50k + 6 weeks lost


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quality assurance process

Can be applied to ANY building

Goal is to catch issues earl and

provide a building that meets the


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.

Building Commissioning Association (BCA).

2. Owners Representative and OSU Architectural &

Engineering Services Coordinator should take advantage of

BCA trainin .

3. Envelope commissioning shall be in accordance with the

Envelope Design Guide

Questions?

Envelope Commissioning Presentation 5 25 09

Documents

Transcript of Envelope Commissioning Presentation 5 25 09