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Anonymous Poster #1

Pit Standard

11/05/2019 10:11 AM

Dear sirs:

What do we understand by 'pit marking standard' for overhead transmission line?

Regards,
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PWSlack
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#1

Re: Pit standard.

11/05/2019 10:28 AM

Undefined: <...Anonymous Poster #1...we...>.

In what context, please? Maybe a paragraph or two?

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Anonymous Poster #1
#2
In reply to #1

Re: Pit standard.

11/05/2019 11:30 AM
PIT MARKINGSTANDARD
LEG EXTENSIONRCABCDФ
-4.5M02.884.184.188.2030d37'21"
-3.0M03.274.184.188.5429d17'23"
-1.5M03.654.184.188.8828d5'22"
0.0M04.034.184.189.2126d58'36"
+1.5M04.414.184.189.5525d56'34"
+3.0M04.794.184.189.9024d58'49"
1M5.054.184.1810.1324d21'33"
2M5.304.184.1810.3623d47'20"
3M5.564.184.1810.6023d13'19"
4M5.814.184.1810.8322d42'2"
5M6.064.184.1811.0622d12'2"
6M6.324.184.1811.3021d42'9"
+4.5M05.174.184.1810.2424d4'56"
+6M05.564.184.1810.6023d13'19"
+7.5M05.984.184.1810.9322d14'11"
+9M06.324.184.1811.3021d42'9"
1M6.574.184.1811.5321d14'36"
2M6.834.184.1811.7820d47'6"
3M7.084.184.1812.0120d21'42"
4M7.344.184.1812.2519d56'20"
5M7.594.184.1812.4919d32'52"
6M7.854.184.1812.7419D9'23M
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sauravbabu
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Engineering Fields - Electrical Engineering - New Member

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Posts: 247
#3
In reply to #2

Re: Pit standard.

11/05/2019 11:32 AM

How to understand the above table?

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PWSlack
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#5
In reply to #3

Re: Pit standard.

11/05/2019 2:19 PM

The best way would be to read and digest the text accompanying it.

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IdeaSmith
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Join Date: Mar 2012
Location: Out of your mind! Not in sight!
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#6
In reply to #5

Re: Pit standard.

11/06/2019 12:19 AM

Good luck understanding the units.

Stating of units in table is good engineering practice and using SE conform units helps most readers to understand context.

The use of"M" for what most likely is meant to be "m" as in Meter is not promising.

What's more a problem is the columns without units.

Yes, the accompanying text will have to be read to understand that table.

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SolarEagle
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Location: by the beach in Florida
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#4

Re: Pit standard.

11/05/2019 1:55 PM

Pit marking is part of the long and detailed process of erecting transmission towers....

"After the location marking (see step 3) has been done, the marking of the pits for excavation for the foundation is done. Each pit and foundation is specific to the type of tower to be erected at that location. Angle of deviation (See Glossary 5) for each tower must be compared with the profile sheet. Pits must be free from excess soil after excavation. Clearing of any trees etc. near the foundations is required."...

https://www.adb.org/sites/default/files/institutional-document/179895/handbook-construction-techniques.pdf

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SolarEagle
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#7
In reply to #4

Re: Pit standard.

11/06/2019 1:36 AM

https://www.slideshare.net/GilbertoMeja1/construction-manual-for-transmission-lines

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