performance based design what does it take to make it happen (20141108)

Performance Based DesignWHAT DOES IT TAKE TO MAKE IT HAPPEN ?Naveed Anwar, PhD

The Question !We know what PBD is

We know PBD is good, and better than conventional design

We know it should be done

We can learn, or we know how to do it

What will it take to make it happen on real projects ?

1 – Understand the Stakeholders

Public

Developer

Architects

Officials

Structural Engineers

Safety, Economy,

Business, Profit, Image,

Aesthetics, Usability, Business, Image,

Public Safety, Conformance,

Structural Safety, Recognition, Business,

2 – Build Awareness

PublicBuilding

OccupantsBuilding Owners

Project Developers

ArchitectsStructural Engineers

Officials

3 – Understand the Process

Client Architect

Structural Engineer

Conventional Design

3 – Understand the Process

Client Architect

Structural Engineer

PBD Specialist

PBD Reviewer

Site Specific Consultant

Performance Based Design

4 – Understand RolesActivity Officials,

CodesClient Architect Engineer PBD Cons Site

SpecificPBDReviewer

System Development u uuu uu u

Code-based Design uu uuu u u

Hazard Definitions u u uu uuu u

Performance Criteria uu u uuu u

PBD and PBA u uuu

Review PBD/PBA u u uu uuu

Incorporate PBD uu uu uuu

The general beliefIncreased Performance → Increased Cost

Increased performance can be achieved for same cost

Reduced cost for same performance

Improved/efficient designs

Need not be true

Easy Needs Knowledge, innovation, better tools, better technology, critical thinking, out-of-the-box

solutions

Cost and Performance

The Cost Issues

Designing Economical Structures

Economical design requires conscious effort

Both CBD and PBD can lead to economical design

PBD provides a greater opportunity to refine and economize with confidence

Designing Economical StructuresThe 4 Rs of economical and high performance concrete buildings

1. Right type of structural system

2. Right member types and sizes at the right places

3. Right amount of reinforcement in right members

4. Right detailing of right reinforcement

Convincing Clients and Architects Improve presentation and communication skills◦ Animations, graphics, videos,

Show them how PBD benefits them◦ Cost, safety, image, salability, advancement, high end…

Scare them a bit, if they don’t do it !◦ Disaster maps, pictures, exaggerated animations,

Create Unified and Consistent Messaging ! << ASEP>>