Framing Systems

Question 1

What is framing?

Answer 1

• A construction of structural members.

- Its purpose is to resist load generated on the hull.

Question 2

What are the three types of framing systems?

Answer 2

• Transverse
• Longitudinal
• Combination

Question 3

What is a transverse framing system?

Answer 3

• The oldest type of framing system.
• Consists of vertical stiffeners which go from the deck beams to the floor supported by beam knee brackets.
• This system is used for ships under 90meters.

Question 4

What is a transverse framing system?

Answer 4

• The oldest type of framing system.
• Consists of vertical stiffeners which go from the deck beams to the floor supported by beam knee brackets.
• This system is used for ships under 90meters.

Question 5

What is a longitudinal framing system?

Answer 5

• Longitudinal beams are used to stiffen the shell structure by application of horizontal bulb plates.
• Transverse webs are used to support the longitudinals.
• This framing system is used on vessels greater than 90meters.

Question 6

What is a combined framing system?

Answer 6

• where both longitudinal and transverse systems are used.
• Transverse in the cargo holds and longitudinals running the length of the vessel.
• this system optimizes the structure of the vessel whilst undergoing load.
• Minimize cost.

Question 7

Advantages of transverse framing system?

Answer 7

• Resist Transverse stress such as raking.
• Absorb vibration.
• Easier construction of complex shapes.
• Resists transverse and vertical buckling of plates.

Question 8

Disadvantages of framing systems?

Answer 8

• Heavier than longitudinal framing.
• Ineffiecent use of material.
• No longitudinal bending resistance.
• No resistance to longitudinal buckling.

Question 9

Disadvantages of framing systems?

Answer 9

• Heavier than longitudinal framing.
• Ineffiecent use of material.
• No longitudinal bending resistance.
• No resistance to longitudinal buckling.

Question 10

Advantages of longitudinal framing systems?

Answer 10

• Resist sagging and hogging
• Lighter than transverse framing
• More efficient use of material than transverse framing.
• Resist longitudinal buckling of plates

Question 11

Disadvantages of longitudinal framing systems?

Answer 11

• Enables vibration
• No resistance with transverse and vertical buckling.
• No resistance to transverse stress.
• difficult construction for complex shapes.

Question 12

Advantages of combined framing systems?

Answer 12

-All the benefits of the transverse and longitudinal

Question 13

Disadvantages of the combination framing system?

Answer 13

-Complex structural connections