amiina bakunowicz:gc pedestrian bridge

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GENERATIVE COMPONENETS: Parametric Modelling The Brief: The site for the project is an exist- ing valley in Kazakhstan with the river flowing on its floor. There are three existing levelled plat- forms. Two higher platforms need to be connected to create a bridge and a staircase that leads from th ebridge to the lower level viewing platform. The following project covers the Centre Line of the main bridge across the valley and the pe- destrian staircase to the viewing platform. Amiina Bakunowicz 1

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GENERATIVE COMPONENETS: Parametric Modelling

The Brief:

The site for the project is an exist-ing valley in Kazakhstan with the river flowing on its floor. There are three existing levelled plat-forms. Two higher platforms need to be connected to create a bridge and a staircase that leads from th ebridge to the lower level viewing platform.

The following project covers the Centre Line of the main bridge across the valley and the pe-destrian staircase to the viewing platform.

Amiina Bakunowicz1

Amiina Bakunowicz2

GENERATIVE COMPONENETS: Parametric Modelling

GC object

Bridge C/Lpts01,02,03,05

pts08,09direction01direction02direction03

CoordinateSys01

p04 pt07

pt06

Staircase C/L

bsplineCurve03bsplineCurve04

pt25

pt26

pts27,29,31

pt28,30pt32

Method of Construction

from promoted linesfrom promoted lines @ 21m

from pts01,02 @ Z=23mfrom pts03,05 @ Z=23mfrom pts08,09 @ Z=21m

by locating point on the ground @ Z=21m, Xdir towards pt04

by dir02 and distance from pt05by adjusting X & Y of Coordinate-

Sys01byintersection of dir03 and

PlaneXZ of CoordinateSys01

from points along the contour linefrom points along the contour linept along the perpendicular plane to the bridge curve, with origin in the point on that curve at a speci-

fied parameterpoint on bsplineCurve03 at a

specified parameterfixed points on the existing topog-

raphy surface & offset from itpts each side of he mid-plaform

point on bsplineCurve04 at a specified parameter @ Z=6m

pt01@23m

pt01@23m

pt25

pt25

pt26

pt26

pt26pt26pt26

pt27

pt27

pt27

pt28pt29

pts28,29,30

pts28,29,30

pt30

pt32

pt32@6m

pt32pt32pt32

pt31

pt31

pt31

pt02@23m

pt02@23m

bsplineCrv03

bsplineCrv03

bsplineCrv04

bsplineCrv04

pt09@21mpt09@21m

pt09@21m

pt05@21m

Few of the possible variations of the bridge’s Centre Line curve

Few of the possible variations of the staircase’s Centre Line curve. The bottom veiwing platform can extend and shrink depending on the position of pt32 as this point is shared by both the centre line of the staircase and the surface of the view-ing platform

pt05@21m

pt05

pt04@21m

pt04@21m

pt04

pt04@21m

pt06@21m

pt06@21m

pt06@21m

pt06pt25

pt25

pt25

pt01

pt02

pt07@

21m

pt07@21m

pt07

pt03@21m

pt03@21m

pt03

pt08@21m

pt08@21m

Amiina Bakunowicz3

GENERATIVE COMPONENETS: Parametric Modelling

1. Attach an external file with the model of the existing topography on which the bridge and the stair-case will be based on 2. Promote the lines from the attached

model (highlighted in yellow) to the cur-rent GC environment

3. Create bsplineCurve03 and 04 based on the exist-ing topography (refer to the table and diagrams on the page 2)

3. Create pt26 on the bspline-Curve03 by providing its pa-rameter (refer to the table and diagrams on the page 2)

4. Create pts28,29,30 and the mid-platform based on the pa-rameters of the existing topogra-phy (refer to the table and dia-grams on the page 2)

5. Create pt32 and the bottom viewing platform (refer to the ta-ble and diagrams on the page 2)

6. The construction pts of bottom view-ing platform include the two points posi-tioned on the plane perpendicular to the crv04 away from pt32 by half-staircse

7. Create two bsplineCurves from pts25-28 and pts30-32. Divide each by 50 to create 100 steps with 15cm risers (giving total height of 21m-6m = 15m). Connect points on each curve with lines created by Chaining.

8. Each of the new lines will be the parental element to insert a step feature created separately.

9. Each step has a construction line (highlighted in yellow) thet will be served as a parental ele-ment for the new feature Railing.

10. New feature Railing is built from a line that will be poicked up later on from each step and view-ing platforms.

11. Similar construction lines are created on both platforms to receive a new fea-ture Railing.

12. The handrail is created by making a curve from the highest points of the fea-ture Railing. A circular extrusion is then applied giving the resulting steps and platforms with the railings.

Fabrication modelling

Amiina Bakunowicz4

GENERATIVE COMPONENETS:Other Models

Pylon and its GC feature

Bullet Tower: model and top view

Weaving surface and its GC feature