Section 1 General

101. Application Decktransverse

beams are to be

supporting longitudinal deck beams and deck girders supporting transverse deck in accordance with the requirements in this chapter.

102. Arrangement

In way of the bulkhead recesses and the top of tanks, deck girders are to be arranged at an inter- val not exceeding 4.6 m as far as practicable.

103. Construction

1. Deck girders are to be composed of face plates provided along the lower edge.

2. Tripping brackets are to be provided at an interval of about 3 m and where the breadth of face plates exceeds 180 mm on either side of the girder, these brackets are to be so as arranged as to support the face plates as well.

3. The thickness of face plates forming girders is not to be less than that of web plates and the width of the face plates is not to be less than obtained from the following formula:

ᾎ Ņ ĪǾKΡ̓Üᾘ Lᾨ (mm)

where:

ᾘL = Depth of webs (mm)

ᾨ = Distance between the supports of girders(m). Where, however, effective tripping brackets are provided, they may be taken as supports

4. The depth of girders is more than 2.5 times that of slots for beams, and is to be kept constant be- tween two adjacent bulkheads for the longitudinal girders.

5. The girders are to have a sufficient rigidity to prevent excessive deflection of decks and excessive additional stresses in deck beams.

104. End connection

1. End connection of deck girders are to be in accordance with the requirements in Ch 1, 304.

2. Bulkhead stiffeners or girders at deck girders.

3. Longitudinal deck girders are to continuity at ends.

the ends of deck girders are to be suitably strengthened to support be continuous or to be effectively connected so as to maintain the