Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > Boat Design
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read Most Recent Posts Gallery Images Search

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-18-2006, 12:06 PM
pashbe1's Avatar
pashbe1 pashbe1 is offline
Junior Member
 
Join Date: Jun 2006
Rep: 41 Posts: 52
Location: usa
ISO scantling rules

Hi,

is anyone familiar with the ISO scantling rules for small craft part 5. I need to figure out (settle an argument) if in section 9, 9.1 requirements for stiffeners w/ similar materials and section 9.2 Requirements for stiffeners w/ dissimilar plies are mutually exclusive.

9.1 reads "The minimum section modulus of stiffening members including the effective plating and the web area of the stiffening members shall not be smaller than given by the following equation"

9.2 reads "Dissimilar plies are when mechanical properties differ by more than 20% from eachother. For such stiffeners, the allowable bending moment does not necessarily correspond to the stress at the farthest fibre of the neutral axis. Therefore the criteria shall be the allowable bending moment, the required sumEI and allowable shear load. The value of Md (Fd) is that value of bending moment (shear force) which corresponds to the first ply in the laminate stack reaching the allowable design stress for that ply."

Any ideas?
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Iso For Scantling Calcs S Hondros Boat Design 3 04-02-2006 03:12 PM
HELP with ISO scantling fede Boat Design 4 08-03-2005 05:08 PM
Scantling Spreadsheets Willallison Boat Design 19 05-22-2005 12:44 PM
Scantling rules for stitch & tape Baycat Wooden Boat Building and Restoration 5 12-20-2004 01:25 AM
design scantling rules guest123 Boat Design 1 12-03-2004 10:06 PM


All times are GMT -4. The time now is 01:31 AM.


Powered by: vBulletin Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2014 Boat Design Net