September 19–20, 2013 | Herwijnen, Netherlands

Geodesign Summit EuropeSeptember 19–20, 2013 | Herwijnen, Netherlands

GeoDesign In practiceLessons learned & future developments

Robin Seijdel, StrateGis

Robin Seijdel

• Co-founder of StrateGis

• Driven by developing tools for participatory design and decision making

• Practical

StrateGis

• GeoDesign for Urban Development since 2006, > 100 projects

• 3D GeoDesign solution: the Urban Developer

• Demand driven

What do we do?

B.Build: we build 2 & 3D GeoDesign models for Urban Development

L. Learn: we learn and understand by enriching our models with data and analysis

T. Transform: we simulate and assess transformations in the urban environment

Especially in the early stages of decision making

Spekkink and van Wijk [1998]

Impact of decisions on the end product

Available information

Lifecycle

When there is something to

choose

For large projects and portfolios

Almere

• 60.000 dwellings

• 100.000 jobs

• 2013 - 2030

Port of Rotterdam

City of Rotterdam

Redevelopment business cases

Development strategy Stadshavens

In the front office

Goals for our Urban Developer (a few)

●Solid financial model (Discounted Cash Flow)

●Interactive and fast

●Scalable conceptual object model: UIM

●Etc.

Urban Information Model

Each object class has it’s own specific:

• Interface

• Set of attributes & algorithms

• Aggregation routines

• Relations with other object classes

exis

tin

gN

ew

Step 1: Build the model (automated ‘snaphot’)

GIS file/database with attributes GIS importer & attribute mapper

Fully annotated & functional 3D Geodesign

model

Result step 1

Step 2: Learn by observing

Step 2: Learn by analyzing (selectable heat maps)

Financial analysis present situation

Select objects through legend

Uuse sequence of heatmaps as filter (zoom in on target

area’s)

Apply measures to

selected objects

Step 3: Transform

Step 3: Transform and assess

Fast 3D content creation

Step 4: Optimize (financial)

Step 4: Optimize (spatial)

Step 5: report

Fabriek Woningbouw

Open, transformatie Open, nieuwbouw Dicht, transformatie Geen haven Havenmond l inks Havenmond rechtsSloop -1,25 -1,81 -0,53 mln - - - Sanering -0,12 -0,12 - mln -0,55 -1,48 -1,47 Bouwrijpmaken -0,19 -0,19 -0,18 mln -0,51 -0,52 -0,51 Terreininrichting -1,15 -1,20 -0,83 mln -1,07 -2,03 -1,75 VTU/POK & onvoorzien -1,03 -1,26 -0,58 mln -0,80 -1,51 -1,40

(Ge)bouwkosten totaal -25,19 -20,04 -34,10 mln -4,92 -5,95 -11,51 Opbrengst gebouwen 27,30 24,65 34,39 mln 7,12 8,23 14,25

Totale kosten -28,94 -24,63 -36,22 mln -7,85 -11,49 -16,65 Totale opbrengsten 27,30 24,65 34,39 mln 7,12 8,23 14,25 Saldo (nom.) -3,74 -4,59 -2,12 mln -2,92 -5,54 -5,14

NCW -2,11 -0,63 -2,45 mln -0,92 -3,09 -2,69

Aantal ggw - - - st 22,00 25,00 22,00 Aantal mgw 45,00 35,00 46,87 st - - 25,00 Hotel 5.530,00 5.530,00 7.187,30 m2 - - - Horeca 833,30 833,30 1.982,80 m2 - - - Overig 911,50 605,30 2.106,00 m2 - - -

Advanced financial modeling in GIS

300 m2 x € 10 = € 3.000

100 m2 x € 5 = € 5.00

€ 3.500

+

Basic financial modeling in urban development

• Discounted cash flow

• Variable interest rates

• Variable cost increases

• Legal issues

• etc

Connected system of financial flows

Land development

Real estate development

Real estate operation

Public space management

Real estate appraisal

Land lease

Land appraisa

l

v

Temporary operations

Energy generation

3D is 3D?

Level of Detail

Different stakeholders, also in 3D

Integrated model

Very rare !!

Land owner: parcels, land lease contracts

Existing real estate: owners, rental contract

Public space: municipality, management public area’s

You need ‘black selection’

Critical succes factors (1)

●Get high on your own supply

●Know your stuff

●Keep it modular FSI, m2,

Critical succes factors (2)

GeoDesign is a proces (workflow and managerial) and not just a piece of software.

Future

3D content creation on a geodatabase

Future?

CityEngine linked to Strategis Framework

www.strategis.nl

robin@strategis.nl