Section 3 Side Keelsons

301. Arrangements

Side keelsons are to be so arranged that their spacing is not more than 2.5 m between the centre keelsons and the side shell plating.

302. Construction

Side keelsons are to be composed of continuous web plates and face plates, and they are to extend as far forward and afterward as practicable.

303. Web plates

The thickness of web plates is not to be less than obtained from the following formula for the midship part. But the thickness is not to be more than that specified in 202. 1. Beyond the mid- ship part, the thickness may be gradually reduced and it may be 0.85 times the midship value at the ends of the barge.

ᾼ Ņ LǾLĨĪ Ã Ñ ĨǾK (mm)

304. Face plates

The thickness of face plates is not to be less than that required for the web plates, and the sec- tional area (A) of face plates amidships is not to be less than obtained from the following formula. Beyond the midship part, the sectional area may be gradually reduced and it may be 0.85 times the midship value at the ends of the barge.

A Ņ LǾĨJ Ã Ñ KǾK (cm2)