Section 2 Construction

201 Construction of Frames

1. Frames are so constructed as to avoid lateral buckling.

2. Where the length of ship is small, corrugated side shell laminates may be adopted in lieu of nor- mal framing construction.

202 Cores for Frames

1. Timbers used for cores are to be well seasoned and free from sapwood. Care is to be taken lest the timbers wrapped in FRP should cause dry rot.

2. Plastic foams used for cores are to be non-hygroscopic.