averages of boards over quite long time period

English translation: reflect the average results observed in boards after analyzing large quantities over quite a long time period.

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:averages of boards over quite long time period
Selected answer:reflect the average results observed in boards after analyzing large quantities over quite a long time period.
Entered by: airmailrpl

07:11 Apr 11, 2004
English language (monolingual) [PRO]
Tech/Engineering - Forestry / Wood / Timber / Lumber
English term or phrase: averages of boards over quite long time period
The context is as follows:

Visual grading of lumber for structural applications uses the size of knots and their location along with other factors such as slope of grain, shake, splits, unsound wood and wane to assign an individual board to a grade category. The grade categories are based on the average influence of these knots and other characteristics in terms of the strength of the boards in that grade category. Physical small batch sample testing is used to verify the actual strengths.

Overall the visual lumber grading systems are qualitative and reflect averages of boards over quite long time period.
Wood from a particular species or species group will vary in actual strength depending on the tree characteristics, genetic variations and climatic and growing conditions.

Question: How to interpret the meaning of 'averages of boards over quite long time period'? Does it mean that the boards have been felled and dried for a long time or does it mean that the empirical estimation of board grades?
Edward LIU
Canada
Local time: 01:35
reflect the average results observed in boards after analyzing large quantities over quite a long...
Explanation:
reflect averages of boards over quite (a) long time period.

reflect the average results observed in boards after analyzing large quantities over quite a long time period.
Selected response from:

airmailrpl
Brazil
Local time: 02:35
Grading comment
Thank you very much
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +6the typical/normal quality of boards...
etale
5reflect the average results observed in boards after analyzing large quantities over quite a long...
airmailrpl
3analysis includes data gathered over time
RHELLER


Discussion entries: 1





  

Answers


1 hr   confidence: Answerer confidence 5/5 peer agreement (net): +6
the typical/normal quality of boards...


Explanation:
Undoubtedly it refers to the empirical estimation of board grades.

etale
Local time: 06:35
Native speaker of: Native in BulgarianBulgarian

Peer comments on this answer (and responses from the answerer)
agree  perke
42 mins
  -> Thank you

agree  Vicky Papaprodromou
1 hr
  -> Thank you

agree  DGK T-I: averages made using different individual board samples taken at different times(over a period).Presume all come from same location,species,etc.
1 hr
  -> Thank you

agree  Hacene: yes, let's say a piece of oak is used for a given purpose because of this wood averages and uses through time, and it is reflected in the visual system
2 hrs
  -> Thank you

agree  David Moore (X)
3 hrs
  -> Thank you

agree  Ray Luo
4 hrs
  -> Thank you
Login to enter a peer comment (or grade)

6 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
analysis includes data gathered over time


Explanation:
the first paragraph explains how lumber is graded visually; grade categories are assigned using knots among other factors. These factors are averaged in order to estimate strength. Samples are tested to verify strengths assigned to any given category.

Board is one piece of lumber; these recorded (strength) averages are collected and the data is statistically examined over time.

Perhaps this is to avoid influences of seasonal rainfalls, for example.

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Note added at 7 hrs 1 min (2004-04-11 14:13:01 GMT)
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Confidence Intervals for Predicting Lumber Strength Properties Based on Ratios of Percentiles ... of these ratios were originally established by analysis of mean ...
www.fpl.fs.fed.us/documnts/fplrp/fplrp606.pdf

RHELLER
United States
Local time: 23:35
Native speaker of: Native in EnglishEnglish
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7 hrs   confidence: Answerer confidence 5/5
reflect the average results observed in boards after analyzing large quantities over quite a long...


Explanation:
reflect averages of boards over quite (a) long time period.

reflect the average results observed in boards after analyzing large quantities over quite a long time period.

airmailrpl
Brazil
Local time: 02:35
Works in field
Native speaker of: Native in EnglishEnglish, Native in PortuguesePortuguese
PRO pts in category: 12
Grading comment
Thank you very much
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