HE11044: Dimension tolerance does not get properly rounded off.

APAR status

• Closed as duplicate of another APAR.

Error description

• Scenario:
  1. Open the CATDrawing in CATIA Drafting W/b
  2. Change the value of precision of the dimension in the drawing
  .
  3. Observe the final value of the dimension tolerance.
  Problem:
  The dimension tolerance is incorrect according to the rules of r
  ounding off.
  Expected Result:
  The dimension tolerance should be correctly rounded off accordin
  g to rules of rounding off.
  

Local fix

• empty
  

Problem summary

• Scenario:
  1. Open the CATDrawing in CATIA Drafting W/b
  2. Change the value of precision of the dimension in the
  drawing.
  3. Observe the final value of the dimension tolerance.
  Problem:
  The dimension tolerance is incorrect according to the rules
  of rounding off.
  Expected Result:
  The dimension tolerance should be correctly rounded off
  according to rules of rounding off.
  

Problem conclusion

• THE PROBLEM HAS BEEN FOUND TO BE ANOTHER SYMPTOM OF THE
  PROBLEM REPORTED IN  APAR HD96458 OR THE ANSWER MADE FOR THIS
  DUPLICATE APAR APPLIES ALSO TO THE CURRENT PROBLEM.
  Additional Closure Information:
  Incident Diagnosis:
  Dimension tolerance does not get properly rounded off.
  Technical Explanation:
  This issue is an exact duplicate of BR10000093331 available
  to the user through the knowledge base.
  In section B-B, the measured value is 7.99999999999943mm . As
  a consequence :
  - Upper limit is 7.99999999999943mm + 0.015mm =
  8.01499999999943mm that gives 8.01mm rounded of to 0.01mm
  - Lower limit is 7.99999999999943mm + 0mm =
  7.99999999999943mm that gives 8.00mm rounded of to 0.01mm
  In section A-A, the measured value is 7.99999999999955mm. As
  a consequence :
  - Upper limit is 7.99999999999955mm + 0.015mm =
  8.01499999999955mm that gives 8.015mm rounded off to 0.001mm
  - Lower limit is 7.99999999999943mm + 0mm =
  7.99999999999943mm that gives 8.000mm rounded off to 0.001mm
  Thus, the behavior is correct according to actual
  specifications for rounding off values.
  Measure between used on Generated Item gives approximated
  results which are less precise than dimensions which computes
  exact sectioning and projections of the 3D geometry.
  Therefore you should always trust Dimensions and not measures
  in a drawing.
  On the other hand, as mentioned earlier, all the dimensions
  values differ from less than 1e-9mm which means they have to
  be considered as the same dimensions (we guess the real
  physical parts will never be manufactured at this level of
  precision).
  In other words, the behavior is correct according to actual
  specifications for rounding off values.
  Duplicate BR:
  BR10000093331
  

Temporary fix

Comments

• This APAR is a duplicate of HD96458
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  CATIA V5 NT>XP

• Fixed component ID

  569151000

Applicable component levels