Loading

Module 1: Design of Batten Plates and Column Splices

Study Reminders
Support
Text Version

Set your study reminders

We will email you at these times to remind you to study.
  • Monday

    -

    7am

    +

    Tuesday

    -

    7am

    +

    Wednesday

    -

    7am

    +

    Thursday

    -

    7am

    +

    Friday

    -

    7am

    +

    Saturday

    -

    7am

    +

    Sunday

    -

    7am

    +

Video 1
So in last lecture we have discussed the design methodology of Batten system. So in Battensystem basically first we need to find out the spacing between 2 compression members forbuild-up section. Batten plates will be provided at a certain distance, then this spacingbetween two Batten members is to be found and then we need to find out the dimensions ofBatten member, means Batten depth, Batten thickness and Batten length, and whether we aregoing for Bolt connection or Welded connection, depending on that we have to find out theBatten dimensions. And once Batten dimension is done, we need to check whether the Battenis capable of carrying that much load or not.Once that is done, if the dimensions of the Batten is okay from the strength point of view,then we will go for design of connection. Connection of Batten I mean. So connection as Itold, connection may be 2 type, one is weld connection and another is Bolt connection, sodepending on the type of connection we will try to find out what are the type of forces aredeveloping, what are the type of stresses are developing. In fact, stresses will be basicallysheared stress and bending stress and also we have to find out the combine stress likeequivalent stress and then we need to see whether design is ok or not. So these are themethodology which we have discussed.
Today we will be discussing about the bolt connection details, so let us go through thefollowing example.Example: A batten column of 10-m long is carrying a factored load of 1150 kN. The columnis restrained in position but not in direction at both ends. Design a built up column usingchannel sections placed back to back. Design batten plates using bolt connection.So first part I will go very quickly and it is known to us, but we have to go through thisbecause we have to know the dimensions of the Batten plates and the spacing between 2members, compression member size, unless we know that we will not be able to find out thedimensions of Batten plates. So to find out the dimensions of the Batten plates we need toknow this, so first we will go through the calculation of the Batten plates, column dimensionsand its spacing.
Video 2
Okay, so if we see the diagram of the design of the Batten plates if we see, it will look likethis.