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#1
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Book about structural design ?
If you call ABS they will be able to answer that question.
Not everybody live in US. Not so easy to call ABS when you can barely write, but no speak english. I can understand a slowly oxford english, but a fast texan (or australian to change country) is far beyond my abilities. I think the bigger questions is do you have an engineering background? Yes. ABS requires you to know how to calculate section modulus, know the mechanical properties of your materials, and generally have an engineering knowledge of structures. Not a problem. My real problem is to determine the forces that will be exerced on the hull. In mathematical conditions, I can do some things. But real life sometimes differs from mathematics. "VG" wrote in message ... With at least some lines dealing with displacement (ie non planning) powerboats in plywood (classical, not stich and glue) , length 30'. subsidary question : Does "Guide for building and classing Motor Pleasure Yachts" from ABS deals with above powerboats ? Or other regulations 'Lloyds ???) Thanks for using your time to answer. |
#2
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Book about structural design ?
"VG" ) writes:
If you call ABS they will be able to answer that question. Not everybody live in US. Not so easy to call ABS when you can barely write, but no speak english. I can understand a slowly oxford english, but a fast texan (or australian to change country) is far beyond my abilities. a fast texan? -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
#3
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Book about structural design ?
That's OK. The fast Texans aren't telling the truth anyway.
VG wrote: If you call ABS they will be able to answer that question. Not everybody live in US. Not so easy to call ABS when you can barely write, but no speak english. I can understand a slowly oxford english, but a fast texan (or australian to change country) is far beyond my abilities. I think the bigger questions is do you have an engineering background? Yes. ABS requires you to know how to calculate section modulus, know the mechanical properties of your materials, and generally have an engineering knowledge of structures. Not a problem. My real problem is to determine the forces that will be exerced on the hull. In mathematical conditions, I can do some things. But real life sometimes differs from mathematics. "VG" wrote in message ... With at least some lines dealing with displacement (ie non planning) powerboats in plywood (classical, not stich and glue) , length 30'. subsidary question : Does "Guide for building and classing Motor Pleasure Yachts" from ABS deals with above powerboats ? Or other regulations 'Lloyds ???) Thanks for using your time to answer. |
#4
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Book about structural design ?
"VG" wrote in message
... If you call ABS they will be able to answer that question. Not everybody live in US. Not so easy to call ABS when you can barely write, but no speak english. I can understand a slowly oxford english, but a fast texan (or australian to change country) is far beyond my abilities. It's probably a good thing, for a lot of reasons, that we all don't live in the US. And your english is pretty good, good enough that I didn't even to bother to check where your message came from. My apologies. ABS does have a web site (www.eagle.org), and they do list an address for you in France: Les Docks - Atrium 10.3 10, Place De La Joliette Marseille FRANCE 13002 phone 33-4-91-14-32-20 Not a problem. My real problem is to determine the forces that will be exerced on the hull. In mathematical conditions, I can do some things. But real life sometimes differs from mathematics. That's the truth! ABS is derived from both mathematics and experience, and offers you options in design that other rules don't. If you need some help in interpreting what ABS is asking for, drop me a line and I'll help you out. Matt |
#5
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Book about structural design ?
It's important to note that the remarks made about structural calculations
are accurate, but also note that boats are subject to unknown forces. Many structural methods used for boats have varying qualities, depending on who did the work and how much of a hurry they are in. Structural design for boats uses structural engineering yes, but large margins are built into the process by using common design rules. Design rules are such things as expected 'hull pressure factors' based on hull type, weight and speed. The hull pressure factor is then used to determine spacing of hull support members, then hull skin or plating is selected (flexural modulus) according to typical design rules for allow percentages of flex. Finally, the structure inside the hull, on the required spacing, is determined ...again, from the hull pressure. It is here, and in skin type and thickness, that structural engineering and experience come into play. There are many ways to frame up or provide internal support to a hull, and it requires engineering knowledge and experience. There is no reason that any interested person cannot work their way through the learning material and then do the design, especially for smaller and lower-powered boats (skiffs). Larger boats should be designed if you are confident that you have the appropriate training and experience. Note that most states (US again ....sorry) use the term 'architect' for a yacht designer and as such usually do not have licensing associated with this type of work. Two states, Washington and some other I can't remember, classify the design work and have varying requirements. Pressure from governments tends to support higher regulation and licensing requirements while pressures from industry support less (to prevent loss of business, higher prices, smaller businesses not surviving etc). If I were you, I'd go ahead and buy the books that apply, read them, then decide how far you want to take it...the training and education or the design work itself. Armchair sports or playing the game. Brian -- My boat project: http://www.advantagecomposites.com/tongass "VG" wrote in message ... If you call ABS they will be able to answer that question. Not everybody live in US. Not so easy to call ABS when you can barely write, but no speak english. I can understand a slowly oxford english, but a fast texan (or australian to change country) is far beyond my abilities. I think the bigger questions is do you have an engineering background? Yes. ABS requires you to know how to calculate section modulus, know the mechanical properties of your materials, and generally have an engineering knowledge of structures. Not a problem. My real problem is to determine the forces that will be exerced on the hull. In mathematical conditions, I can do some things. But real life sometimes differs from mathematics. "VG" wrote in message ... With at least some lines dealing with displacement (ie non planning) powerboats in plywood (classical, not stich and glue) , length 30'. subsidary question : Does "Guide for building and classing Motor Pleasure Yachts" from ABS deals with above powerboats ? Or other regulations 'Lloyds ???) Thanks for using your time to answer. |
#6
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Book about structural design ?
Martin says:
Steve pulls up a chair... Hmmmmmmm... are you 1) expecting a lecture on why math is fundamental to engineering or 2) pulling my leg? Neither - it looked like the start of a good flame war, so I thought I'd get a ringside seat. Looks like the gauntlet wasn't picked up, though. Just as well. Steve |
#7
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Book about structural design ?
Wait ...give it time. If someone is mathematically challenged, then it
might also take them awhile to figure out that they've been flamed bd "Stephen Baker" wrote in message ... Martin says: Steve pulls up a chair... Hmmmmmmm... are you 1) expecting a lecture on why math is fundamental to engineering or 2) pulling my leg? Neither - it looked like the start of a good flame war, so I thought I'd get a ringside seat. Looks like the gauntlet wasn't picked up, though. Just as well. Steve |
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