# Frame spacing

Discussion in 'Boat Design' started by Ghost Boy, Mar 13, 2020.

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1. Joined: Oct 2019
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### Ghost BoyJunior Member

Hello,
Can you please suggest me books or article to know about frame spacing? How can I calculate frame spacing? I am at the preliminary stage.

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### bajansailorMarine Surveyor

Ghost Boy, surely you must realise by now (re the replies to your previous questions) that nobody can give you a magic answer to such a vague question?
It would help a bit if you could explain what type / size of boat you are trying to design.
And I am sure it has been mentioned to you many times now that one way you can start to work out scantlings (including frame spacing) is from the Class Rules.

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### TANSLSenior Member

A structure is a set of elements, all related to each other, that depend on each other. You can't know what one of them is like if you don't know the others. The separation of frames, if you place the plates of a sufficient thickness, and longitudinal elements, can be 7254 km (to give a figure. It is not an exact measurement, as you can assume). Excuse my ironic tone, I do not want to offend but your question is, to qualify it in some way, "curious"

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### gonzoSenior Member

You can design a frameless hull.

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### TeddyDiverGollywobbler

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### DCockeySenior Member

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### Ad HocNaval Architect

For what you seek - there is none. Other than the structural theory behind the implications of frame design and panel aspect ratios.

Frame spacing is chosen by the designer to suit fabrication and weight and costs and outfitting issues etc. It can be whatever you want it to be.
Thus you do not "calculate" it... it is what it is... YOU decide.

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### JSLSenior Member

Assuming you are designing a boat of some significance or size (ie: not a dinghy, car-topper, etc) bajansailor has the right advice - go with some Class Rules (Lloyds, ABS, DNV, etc)

update: Title example from ABS
Rules for Building & Classing Aluminum Vessels
Others (Lloyds, DNV, etc) similar

Last edited: Mar 15, 2020
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### peter radclyffeSenior Member

Lloyds scantling rules

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### Ghost BoyJunior Member

Thanks everyone

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