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Top The TRMA Discussion Forum topic #54011
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Subject: "Transverse frame dimensions" Previous topic | Next topic
jsand42Thu May-05-16 12:11 AM
Member since Jan 04th 2016
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#54011, "Transverse frame dimensions"


          

Apologies if this has been covered somewhere before. I've been reading TTSM ch. 4 over and over, and I can't quite seem to find a clear authoritative answer to what seems to me a basic question. Exactly what are the numerical dimensions of the transverse frames? Piecing together various internet sources and putting rulers to the drawings, I *think* I'm coming up with a channel of 10" x 4" x 0.5", at least admidship. Is that correct? At what point do the dimensions start to decrease, and how much smaller does it get before the construction changes to angle/reverse frame?

Thanks much,

Jeff Sand

  

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Replies to this topic

Ralph CurrellThu May-05-16 04:51 PM
Member since Mar 31st 2007
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#54014, "RE: Transverse frame dimensions"
In response to Reply # 0


          

Hello Jeff,

The channel frames in the midship area were of 10 x 4 1320 x 4 320 x 1320 inches. Of course many frames in this area were not of channel section (for instance at webs and bulkheads) so this is a generalization.

I'll try to find out what was used at the ends.

Regards,
Ralph

  

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jsand42Fri Apr-07-17 09:46 PM
Member since Jan 04th 2016
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#54912, "RE: Transverse frame dimensions"
In response to Reply # 1


          

I just noticed that I asked this same question last year that I just asked you about in the other thread! TTSMv1 pg. 71 shows "10 x 4-13/20 x 4-13/20 x 13/20" in the figure (13/20 vs. 3/20 for the 3rd number). I was just wondering if you had an alternate source? Thanks,

Jeff Sand

  

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Ralph CurrellSat Apr-08-17 04:11 AM
Member since Mar 31st 2007
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#54916, "RE: Transverse frame dimensions"
In response to Reply # 2


          

Hi Jeff,

I replied in the other thread, though maybe any further discussion should be in this thread since the title is more specific.

Regards,
Ralph

  

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Ralph CurrellSat Apr-08-17 02:21 PM
Member since Mar 31st 2007
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#54918, "RE: Transverse frame dimensions"
In response to Reply # 3


          

Hi Jeff,

Just to follow up my message of this morning, the frame dimensions are given on the survey form L.L.9, as shown here:



The quality is not the best, but the third dimension looks to me like 4 320. I think the penciled note reads "4 1320 next shell".

Regards,
Ralph

Attachment #1, (jpg file)

  

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Bill WestSun Apr-09-17 12:02 PM
Member since Feb 02nd 2010
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#54925, "RE: Transverse frame dimensions"
In response to Reply # 4


          

Scott Andrew's drawing on TTSM pg78 expands on Ralph's May 5 '16 figures. It is not a symmetrical channel, the web is 10" deep, the inner flange is 4-3/20" wide and the flange next to the shell is 4-13/20" wide.

Bill

  

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