Craft Bloc Plan
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Transcript of 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,