Boat Structure Terminology of The Elements of Boat Strength: For Builders, Designers, and Owners

[Chris Harding]

Hello,

I am studying[1] and the terminology is above my pay scale. Specifically, I am concentrating on chapter 19. I provide a few examples that I can't find on the internet.


Topsides-Frame-Flange Width

Deck-Beam-Web Height

Deck-Beam-Flange Width

Also, what does web and flange mean in boat construction terminology. I feel like it is a stupid question but I need to understand the terminology.

References:

[1] Gerr, Dave. The Elements of Boat Strength: For Builders, Designers, and Owners . McGraw Hill LLC. Kindle Edition.

 

[jehardiman]

Welcome to the forum.
If you don't have access to something like the AISC Steel Construction Manual or the ABS Rules, here is a site that explains web and flange for a simple I-beam.

I-beam - Wikipedia https://en.wikipedia.org/wiki/I-beam

When we look at vessel structure, often the web of a beam (frame, longitudinal, stringer, etc) is attached to the shell, bulkhead, or deck. In these cases there is a particular (varies with the rules) width of the shell, bulkhead, or deck that becomes the effective flange. From there typical structural analysis applies.

 

[Chris Harding]

Welcome to the forum.
If you don't have access to something like the AISC Steel Construction Manual or the ABS Rules, here is a site that explains web and flange for a simple I-beam.

I-beam - Wikipedia https://en.wikipedia.org/wiki/I-beam

When we look at vessel structure, often the web of a beam (frame, longitudinal, stringer, etc) is attached to the shell, bulkhead, or deck. In these cases there is a particular (varies with the rules) width of the shell, bulkhead, or deck that becomes the effective flange. From there typical structural analysis applies.

I found this excellent reference from 1918.

Modern Shipbuilding Terms. (1918). United States: Lippincott.

 

[jehardiman]

Just to make sure here...., because you used metal shipbuilding terminology,....what exactly are you building in? Steel? Al? Wood? Composite?

 

[mc_rash]

1. Width of the flange of the topsideframe
2. Height of the web of the deckbeam
3. Width of the flange of the deckbeam

Did you read the previous chapters 13 - 18, or maybe the whole book? Could be helpful even if there is no specific explanation of what a web and a flange is, since the book is written for designers and builders who usually know what is stiffening in boat construction.