Engineering & InfrastructureEngineering & Infrastructure

I. Design & Implementation: A ProcessI. Design & Implementation: A Process

II. Language:II. Language:

a. Engineering vs. NU Planning Languagea. Engineering vs. NU Planning Language

b. Local versus Universal b. Local versus Universal

III.III.Lessons applied to New Town LibertyLessons applied to New Town Liberty

Anthony M. Sease, PE, NCARB www.civitech.com

The Street

“Every trip begins with a step”

“Life takes place on foot” – Jan Gehl

The Charter of the New Urbanism

The region: metropolis, city, and town

The neighborhood, the district, and the corridor

The block, the street, and the building

Sustainable: over what period of time?Equitable: for whom?

Civitech, Inc. - Patti Banks Associates

Civitech, Inc. - Patti Banks Associates

The post-charrette plan

Following the master plan

After the charrette

Pervious pavers planned in March, now installed

NU planner says:

Language of PracticeCivil engineer hears:

• Slow Streets

What the planner meant:

• 25-35 mph • 10-25 mph

Health, Safety & Welfare

NU planner says:

Language of PracticeCivil engineer hears:

• Slow Streets

• Tight centerline radii

• Tight curb radii

• Traffic calmed streets

• Offset intersections

• Street trees

• Houses near the street

• Joint trenching

• Naturally sloped alleys

• Attractive Inlets

• Two-way alleys

What the planner meant:

• 25-35 mph

• 180’ – 200’

• 15’ – 20’

• Speed humps

• 150’ offset

• Trees along the r.o.w.

• 20’ setbacks

• 10’ shared easement

• Straight short profiles

• Smooth concrete

• 18’ paving

• 10-25 mph

• 50’- 89’

• 5’ -15’

• Deflected vistas

• Sidewalks/views align

• Planting strips

• 8’-15’ build-to-lines

• Single trench

• Natural grade

• Civic art

• 11’-12’ lane, no signs

Defining the Thoroughfares:Integrator A Integrator BNeighbourhood

Connector

Locally specific‘Local’ versus ‘Universal’ Engineering

Universal items

• Utility Hierarchy

• Typical Utility Practices

• Sewer

• Meter boxes

• Garbage collection mechanism

• Emergency response equipment

• Incident management philosophy

• Stormwater: peaks & frequency

• Soil types/variability/percolation

• Construction materials:asphalt/concrete

• Urban tree species & planting

• Bike accommodation

• Construction techniques/cost

• Street Design

• widths, radii, vehicle tracking

• Final grading

• Basic utilities

• Lot sizes, porches, service, garbage

• Commercial access

• Emergency response ‘network’

• Water as a resource

• Water as civic art

• General sequence of construction

• Preeminence of pedestrian

• Five-minute walk

• Bike/Ped modal splits

• General principals of safety

Insert image cotton district

Architecture‘Local’ versus ‘Universal’ Engineering

Engineering

• Design Architect• Architect of Record

• Consulting Engineer

versus:

Design Engineer/

Engineer of Record

Lessons applied to New Town Liberty

Lessons applied to New Town Liberty

New Town Liberty

Lessons applied to New Town Liberty

Anthony M. Sease, PE, RA

Civitech, Inc.1107-B West Main Street

Durham, North Carolina 27701919-338-1050

www.civitech.comtony@civitech.com