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Assignment 1 this year 04

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– The aim of assignment 1 is to produce a parametric object using ArchiCAD and GDL programming. The object will be a conceptual tall tower – between 50 and 200 storeys – located on a prominent site in Melbourne (as shown in the following slides) – This object must modify itself in some way based on setting one or more parameters (imaginative solutions are strongly encouraged). – You are required to produce a report describing how you used CAD to design and program the object and what advantages/disadvantages the use of CAD provided (include pictures of your object to show configurations derived from setting different combinations of parameters). – The mark for this assignment will be based on the following criteria: –Quality of the design (complexity of the object, etc) –Demonstration of the use of CAD parameterisation in the design. –Report clarity and quality – The assignment is an individual assignment Assignment 1

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The site Source: Google Earth

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The site 100 x 100m

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The site 100 x 100m

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Street view building next door

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A design

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Dimensions Site ratio 50:1 (gross floor area : site area) No floor plate shape constraints No height limit – assume between 50 and 200 storeys (variable) Typical floor-to-floor height 4m Usage Commercial with retail at bottom (variable proportion) Ideas following … look for what is being varied. The building object

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Worked example

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Swiss Re, London

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Parameters waist widthno. of storeys edge material cap storey height increment

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Object parameters

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Object 2D script ! Gherkin building ! Written D Marchant ! 8 August 2007 ! Declarations ! intItop section counter ! intIEndtop section terminator ! intJbottom section counter ! intJEndbottom section terminator ! sngMiddlez bottom of middle piece ! zMoveincremental zPos ! sngRadiusinitial storey radius ! sngRadDecradius decrement ! sngRadradius at each step ! Set initial axes location ADD2 0,0 ! Put in a hotspot HOTSPOT2 0, 0 ! Calculate counters IF FRA(intNoStoreys / 2) > 0 THEN ! odd number intJEnd = INT(intNoStoreys / 2) intIEnd = intJEnd ELSE ! even number intJEnd = intNoStoreys / 2 intIEnd = intJEnd - 1 ENDIF ! Calculate radius decrement sngRadius = lenWaist / 2 sngRad = sngRadius sngRadDec = sngRadius / intNoStoreys ! Put in middle piece CIRCLE2 0, 0, sngRadius ! Put in top pieces FOR intI = 1 TO intIEnd sngRad = sngRad - sngRadDec CIRCLE2 0, 0, sngRad NEXT intI ! Reset axes DEL TOP END

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Object 3D script ! Gherkin building ! Written D Marchant ! 8 August 2007 ! Declarations ! intItop section counter ! intIEndtop section terminator ! intJbottom section counter ! intJEndbottom section terminator ! sngMiddlez bottom of middle piece ! zMoveincremental zPos ! sngRadiusinitial storey radius ! sngRadDecradius decrement ! sngRadradius at each step ! Set initial axes location ADD 0,0,0 ! Calculate counters IF FRA(intNoStoreys / 2) > 0 THEN ! odd number intJEnd = INT(intNoStoreys / 2) intIEnd = intJEnd ELSE ! even number intJEnd = intNoStoreys / 2 intIEnd = intJEnd - 1 ENDIF ! Calculate radius decrement sngRadius = lenWaist / 2 sngRad = sngRadius sngRadDec = sngRadius / intNoStoreys ! Put in middle piece sngMiddle = intJEnd * lenStoreyHt ADDZ sngMiddle CYLIND lenStoreyHt, sngRadius ! Put in bottom pieces FOR intJ = 1 TO intJEnd zMove = (-1 * lenStoreyHt) ADDZ zMove sngRad = sngRad - sngRadDec CYLIND lenStoreyHt, sngRad NEXT intJ ! Reset axes location and radius DEL intJEnd sngRad = sngRadius ! Put in top pieces FOR intI = 1 TO intIEnd zMove = lenStoreyHt ADDZ zMove sngRad = sngRad - sngRadDec CYLIND lenStoreyHt, sngRad NEXT intI ! Put in cap ADDZ zMove ELLIPS (1.8 * sngRad), sngRad ! Reset axes DEL TOP END

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User view preview

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The gherkin – 2D

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The gherkin – 3D

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