DISCOVER HIGH PERFORMANCE PRECAST · 2020. 10. 5. · 1. DEFINE Define what high performance...

D ISCOVER H IGH PERFORMANCE

PRECAST

PCI Mountain

States

Members

EnCon United/Stresscon/Encon Colorado

Forterra Structural Precast

Harper Precast

Missoula Concrete Construction

Olympus Precast

Plum Creek Structures

Wells Concrete

Rocla Concrete Tie

Teton Prestress Concrete

This program is registered with the AIA/CES for continuing

professional education. As such, it does not include content that

may be deemed or construed to constitute approval, sponsorship

or endorsement by the AIA of any method, product, service,

enterprise or organization. The statements expressed by

speakers, panelists, and other participants reflect their own views

and do not necessarily reflect the views or positions of The

American Institute of Architects or of AIA components, or those of

their respective officers, directors, members, employees, or other

organizations, groups or individuals associated with them.

Questions related to specific products, publications, and services

may be addressed at the conclusion of this presentation.

AIA/CES Quality Statement

PCI has met the standards and requirements of the

Registered Continuing Education Program (RCEP).

Credit earned on completion of this program will be

reported to RCEP. A certificate of completion will be

issued to each participant. As such, it does not include

content that may be deemed or construed to be an

approval or endorsement by RCEP.

RCEP Registered Program

1. DEFINEDefine what high performance structures are and explain how they provide benefits such as increased health and wellbeing for the end user/client.

2. DISCUSSDiscuss the user advantages and long-term physical and economic benefits of high performance design for improved safety, comfort and indoor environmental quality.

3. EXPLAINAttendees will be able to explain the concept of resiliency and identify why it is important to the health, safety and welfare of the general public.

4. LEARNLearn how high performance building envelopes provide durability and multihazard protection for the public over a long life span.

01. Discover High Performance Precast

Learning Objectives

What is Concrete?

Concrete - A composite material that consists

essentially of a binding medium within which are

embedded particles or fragments of aggregate.

(ASTM)

Concrete constituents:

• Cement

• Water

• Aggregates

• Admixtures

• Air

What is Precast Concrete?

Precast Concrete - concrete cast elsewhere than its

final position (ACI)

What is Prestressed Concrete?

Prestressed Concrete – concrete with its primary

reinforcement consisting of steel strand that has

been put into tension which results in compression

of the concrete

Prestressed Concrete:

• Increases load carrying capacity

• Allows for greater spans

• Reduces cracks

• Smaller sections

Precast Elements

Precast Elements

Precast concrete is architectural

and structural

Precast Elements

A. Load-bearing architectural spandrel

B. Exterior column

C. Double-tee or Hollowcore plank

D. Interior column

E. Inverted tee beam or composite beam

F. Shear wall

G. Stairs

A

A

B

F

C

C

E

D

G

B

F

C

C

E

D

Double-tee System

Hollowcore Plank System

Structural Products – Total Precast Offices

Precast Concrete Walls – Three Basic Types

Insulated Sandwich

Solid Wall Panel Thin-shell

• Non-load bearing and load bearing

• Available in essentially any shape and finish

Shapes

• Window walls

• Spandrels

• Column covers, mullions

Wall Types - Solid

Wall Types – Insulated Sandwich Wall Panels

Wall Types – Thin-shell

Wall Types – GFRC (Thin-shell)

GFRC - Municipal Offices

GFRC – Federal Building

Temple Construction

Structural Precast

Structural Systems

Exterior and Interior shear walls

Structural Systems

Frames

Project Applications

Buildings

Parking Structures

Transportation

Transportation: Prestressed Girders

High Performance

What is a High Performance Structure?

“… integrates and optimizes on a lifecycle basis all major

high performance attributes, including:

• energy and water

conservation,

• environment,

• safety,

• security,

• durability,

• accessibility,

• cost-benefit,

• productivity,

• sustainability,

• functionality,

• and operational

considerations

Energy Independence and Security Act of 2007

401 PL 110-140


“… integrates and optimizes on a lifecycle basis all

major high performance attributes, including:


conservation,

• environment,

• safety,

• security,

• durability,

• accessibility,

• cost-benefit,

• productivity,

• sustainability,

• functionality,

• and operational

considerations


401 PL 110-140


“… integrates and optimizes on a lifecycle basis all major

high performance attributes, including:


conservation,

• environment,

• safety,

• security,

• durability,

• accessibility,

• cost-benefit,

• productivity,

• sustainability,

• functionality,

• and operational

considerations


401 PL 110-140

High Performance Precast

Precast concrete is a high performance material that

integrates easily with other systems and inherently

provides the versatility, efficiency, and resiliency

needed to meet the multi-hazard requirements and

long-term demands of high performance structures.

Attributes and Benefits

VERSATILE EFFICIENT RESILIENT

Aesthetic Versatility Site Efficiency Structure Durability

Virtually any color, form, and texture Minimal site disturbance Long service life

Facade integration Negligible waste Barrier wall system

Historic compatibility Accelerated construction Functional resilience

Structural VersatilityEnergy and Operational

EfficiencyMulti-Hazard Protection

Load-bearing envelopes Scalable performance Storm resistance

Economical sections Thermally efficient Earthquake resistance

Long open spans Low life-cycle costs Blast resistance

Use Versatility Risk Reduction Life Safety and Health

Recyclable Design assist Indoor environmental quality

Deconstructive reuse Reduced detailing and trades Passive fire resistance

Adaptive reuse Enhanced profitability Meets FEMA 361

High Performance:

Versatile

• Aesthetic versatility (color, form and texture)

Aesthetics – Blend in

Aesthetics – Stand out

Aesthetics – Concrete Colors

Aesthetics - Concrete

As Cast

Exposed Aggregate

Acid Etch

Abrasive Blast

Aesthetics - Forms

Aesthetics - Formliners

Aesthetics – Veneers, Thin-Brick

Aesthetics – Veneers

Limestone Granite

Aesthetics – VeneersMarble

Tile Terra Cotta

Combination Finishes

The Aesthetic Versatility of Precast

High Performance:

Versatile


• Design versatility (structural applications, load points, open spans, etc.)

The Structural Versatility of Precast

High Performance:

Versatile


• Design versatility (structural applications, load points, open spans, etc.)

• Adaptable use and reuse

Use Versatility - Recycled/Reuse

Use Versatility – Project Adaptability

High Performance:

Efficient

• Site Efficiency

Site Efficiency

High Performance:

Efficient

• Site Efficiency

• Energy and Operational Efficiency

Enclosure Systems

Thermally efficient

enclosures provide:

• Protection against

moisture

Barrier Wall(Face-sealed)

Enclosure Systems

Thermally efficient enclosures provide:

• Protection against moisture

• Continuous insulation, air and vapor barriers

Material Average leakage, cfm/ft2 of

surface at 0.3 in. H2O

Solid precast concrete

wall

No measurable leakage

Extruded polystyrene

insulation


½” fibreboard

sheathing

0.31

Uncoated brick wall 0.31

Uncoated concrete

block

0.41

1” expanded

polystyrene

0.93

Material Average leakage, cfm/ft2 of

surface at 0.3 in. H2O

Solid precast concrete

wall


Extruded polystyrene

insulation


½” fibreboard

sheathing

0.31

Uncoated brick wall 0.31

Uncoated concrete

block

0.41

1” expanded

polystyrene

0.93

Enclosure Systems

Thermally efficient enclosures provide:

• Protection against moisture

• Continuous insulation, air and vapor barriers

High performance precast concrete inherently provides all three: continuous insulation, air and vapor barriers in one efficient system.

Reduce Thermal Bridges

Thermal Mass

• Absorbs outside and inside heat

and slowly releases

• Thermal mass effect delays the

onset of peak heating or cooling

loads

• Thermal mass effect may reduce

peak demand/energy consumption

and enable downsized HVAC

systems

• Reduces indoor temperature

fluctuation to improve occupant

comfort

• Thermal mass effect varies by

climate

Reduce Other Materials

High Performance:

Efficient

• Site Efficiency


– Thermally efficient

– Reduce life-cycle costs• Does not require painting

• Does not rust, rot, or degrade when wet

• Fewer joints

• UV and pest resistant

High Performance:

Efficient

• Site Efficiency





• Fewer joints


• Risk Reduction• Reduce trades, detailing, joints

High Performance:

Efficient

• Site Efficiency





• Fewer joints


• Risk Reduction• Reduce trades, detailing, joints

• Design assist

High Performance:

Resilient

• Structure durability

Completed in 1953

High Performance:

Resilient


• Multi-hazard protection/functional resilience

Functional Resilience – expresses a structure's durability, competence to maintain its integrity, and ability to have its function restored following environmental change and natural or human-caused disaster.

Impact Testing

Seismic Testing

Blast Testing

High Performance:

Resilient


• Multi-hazard protection

• Life safety and health– No VOCs

– No Mold

– Fast enclosure

– Sound insulation

– Multi-hazard protection

– Passive fire protection

Drywall

Precast

Environmental Impact

Environmental Impact

• What is the environmental impact from using high

performance precast concrete relative to other

systems?

Environmental Impact - LCA

PCI conducted a Life-Cycle Assessment (LCA)

• Cradle-to-grave

• ISO 14040 & 14044

• Third-party verified

Baseline building

• Five story, commercial office

• 130-person occupancy

• IBC (2006), & ASHRAE 90.1 (2007)

• 73-year service life

• Window-to-wall-ratio: 0.40

• Climate Zones: Miami, Memphis, Denver, Phoenix

LCA – Systems Matrix

Three structural systems

• Steel

• Cast in Place

• Precast concrete

Five enclosure systems

• Curtain wall

• Brick and steel stud

• Precast concrete

• Insulated precast concrete

• Insulated precast concrete with thin-brick

S- CW S- Br S - PC S - IPC S - IPCTB

C-CW C-Br C-PC C-IPC C-IPCITB

PC-CW PC-Br PC-PC PC-IPC PC-IPCTB

Environmental Impact - LCA

Findings:

• Use stage (Operating energy) has the greatest

environmental impact for any structure/enclosure

combination (about 96%)

• The COV among structure/enclosure combination for a

given climate zone was 2% or less

• Precast concrete systems do NOT impose additional

environmental burden relative to the systems studied

Certification

PCI Certification

• Quality Assurance - An integrated and ongoing system

of knowledge, programs, activities, people, inspections,

tests, documentation, and assessment with the sole

purpose of making sure that the intended design

requirements are met.

• Quality Control - is the operational activities used to

fulfill requirements of quality (e.g. testing,

documentation)

• Certification - is a program to check the QA program.

▪ Certification helps ensure that essential components

of a QA system are:

▪ Present

▪ Functioning properly

PCI Certification

Certification assures owners, specifiers, and designers that

products and systems are:

• Manufactured by companies that subscribe to

nationally accepted standards

• Have comprehensive internal quality systems in place

• Are audited to ensure compliance

Benefits of PCI Certification

• Complete Program

• Pre-Qualified Bidders

• Total Lower Cost

• Checked to Specifications

• Clearly identified manufacturer capabilities

PCI Plant Certification







• Proven and widely accepted

PCI Certification Specified In:

• AIA Masterspec

• General Services

Administrations

• Federal Bureau of

Prisons

• USACE, NFVAC, etc.

• Over 32 DOTs

• FHWA endorsed







• Proven and widely accepted

• As-designed, becomes as-built

• Integrated with and an ongoing part of the Precast Concrete Structures industry’s Body of Knowledge

Summary

High Performance Structures

• Integrate and optimize ALL relevant attributes

• Focus on long-term performance & reducing life cycle costs

• Are built sustainably and also resiliently

High Performance Materials

• Must be versatile, efficient and resilient

• Provide long-term performance

Summary

Precast concrete is versatile

• Offers a virtually endless array of colors, finishes and textures =

easy to achieve your aesthetic goals efficiently

• Finishes can be combined = reduces time, costs and risk

• Can be used as the structural and enclosure system

simultaneously = saves time, materials and costs

• Can be recycled & reused = is sustainable

• Facilitates easier adaptation of a structures use = improves

service life

Summary

Precast concrete is efficient

• Accelerates construction = allows quicker enclosure and project

completion = quicker use

• Allows for a smaller site footprint = minimizes negative effects to

a project site and the environment

• Combines continuous insulation, air and vapor barriers into one

efficient system = optimizes the enclosure, reducing

maintenance

• Improves thermal efficiency by as much as 30% = reduces

operational costs and energy use

• Reduces overall life cycle costs = saves money

• Requires less trades, coordination, and detailing = reduces risks,

costs

• Provides a high degree of quality = as-designed becomes as-

built

Summary

Precast concrete is resilient

• Is extremely durable = can provide a 100 year service life

• Can provide multi-hazard protection (e.g. storms, earthquakes,

terrorists attacks, etc.) = protects occupants, reduces costs of

rebuilding

• Provides inherent passive fire protection = protects occupants,

reduces costs of rebuilding

• Improves occupant comfort and safety = protects occupants and

improves productivity

• no VOCs

• no mold

• excellent sound insulation

• less temperature fluctuation = more occupant comfort

Summary

Precast concrete is a high performance material that

integrates easily with other systems, and inherently

provides the versatility, efficiency, and resiliency needed to

meet the multi-hazard requirements and long-term

demands of high performance structures.

Thank you!

Visit: www.pcims.org

www.pci.org

Contact: [email protected]

PCI Lunch and Learn Programs

– Discover High Performance Precast

– Aesthetic Versatility of Precast Concrete

– High Performance Precast Envelope Systems

– High Performance Precast Educational Facilities

– Designing High Performance Parking Structures

– Precast Concrete Residential Housing

– Precast Concrete Industrial Structures

– Sustainable Design Using Precast Concrete

Transportation Market Briefing

New Beam Shapes

• Nebraska Research

New 2014 IDOT PPC Beam Shapes

DISCOVER HIGH PERFORMANCE PRECAST · 2020. 10. 5. · 1. DEFINE Define what high performance...

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