This document provides an overview of load modeling for an offshore platform, including self-weight, live loads, equipment loads, crane loads, wave loads, current loads, wind loads, and environmental load factors and combinations. It discusses determining member properties, offsets, load details, and references for weight, dimensions, and assumptions. Load inputs from a previous model are also addressed.

1. Tutorial #4
KL4120 Offshore Platform
Ocean Engineering ITB
2015

2.  Advanced Modelling (Review)
 Basic Load
 Environmental Load
 Load Factor and Combination
 Global Parameters
 Assignment #3!

3.  Any questions (before)?
 Kind of member properties type?
 How to determine member property?
 Why model need to be offsets?
 Check model step and troubleshooting

4.  Selfweight / Deadload
 Live load
 Equipment Load
 Jacket Appurtunance Load
 Crane Load + Moment
 etc

5. Contoh load detail (requested by owner):

6.  Selfweight / Deadload
 Two way to determine selfweight and
deadload in SACS, which one we use?

7.  Live load
 Live load = human load / operating load
 Different for each areas/decks/standards

8.  Equipment Load
 Using pressure area load
 Calculate weight / area of equipment, and
then input the load

9.  Jacket appurtunance load:
 Anode
 Pad-eye / shackle
 Mudmats (if not appear in model)
 Ladder
 etc

10.  Crane load and moments:
 What we need:
 crane weight
 crane arm
 Calculate manually and input as joint load
and joint moment

11.  Wave Load
 Current Load
 Wind Load
 etc
 Flood (for platform in river/delta/estuary area)
 Tsunami (for platform in tsunami area)
 dll

12.  Wave Load

13.  Wave Load
 Wave theory selection
 Calculate Tapp

14.  Wave Load

15.  Current Load

16.  Wind Load
 Wind load on SACS
 Seastate input
 Manual calculation,
applied in deck legs
Find the difference!

17.  Wind Load

18. Contoh environmental load :

19.  Why load must be factor-ed?
 Why should be determine load combination?
 How to determine factor and combination?

22.  Mass and Drag Coefficient
 Marine Growth
 etc

23.  Mass and Drag Coefficient

24.  Marine Growth

25.  Load input from last model that created.
 Detail:
 Selfweight
 Live load (see references!)
 Equipment (weight and dimension -> see references!)
 Crane (assumptions -> see references!)
 Environmental load:
 NIM 155120xy
 x = wave height , y = wave period
 |x-y| = wind speed
 x and y = current speed ( bigger in surface, less in seabed)

26.  Address : ftp://kuliah.ocean.itb.ac.id
 Username : senin
 Password : malam
 Format nama file:
sacinp.tugas3_155120xy