Craft Bloc Plan

8/17/2019 Craft Bloc Plan

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Computer Relative Allocation of

Facility Techniques (CRAFT)

• Discrete or Continuous Representation

• Discrete Representation

• A two-dimension array with numers

• !ach cell represents a unit area " numers

represent the department occupied the cell


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A $ample %rolem


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'alid Discrete Representation

'alid Representation

√ Contiuous *f an activity is represented y

more than one unit+ every unit of the must

share at least one ede with at least one

other unit

√ Connectedness The perimeter of an

activity must e a sinle closed loop

√ ,o !nclosed 'oid ,o activity shape shall

contain an enclosed void

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Computer Relative Allocation of

Facility Techniques -- CRAFT (1./&)

Alorithm1) Any *ncument 0ayout

Descrie a tentative layout in locs

Determine centroids of each department

Cost2 Σ distance (in the from-to matri3) 4 unit cost> Distance can e !uclidian or Rectilinear

#) *mprovement mae pair wise or three way e3chanes√ equal area only

√ ad5acent (enerally)&) *f etter solution e3ists6 Choose the est+ o to 1)

7therwise $top


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CRAFT


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CRAFT


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CRAFT


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CRAFT


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CRAFT


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CRAFT

*n the oriinal desin+ e3chane has to e departments of

equal area or ad5acent departments<


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$hape Consideration

$hape Consideration

√ $haper Ratio Rule The ratio of a feasile shape should e withspecified limits

√ Corner Counter The numer of corners for a feasile shaper may

not e3ceed specified ma3imum


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!3cel Add-ins for facility %lannin

The !3cel Add-*n

√ =ritten y %rof< %aul >ensen (?T-Austin)

√ Contains an implementation of CRAFT and can e downloaded at√ http@@www


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07C%0A,

$et up all departments in ands (#or&)

Continuous areas not locs

?se From to or a relationship chart

?ses two way e3chanes


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07C%0A,

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Craft Bloc Plan