3rd July 2020, Period 4, Class 12, Engineering Graphics, Machine Parts - Single Riveted Lap Joint

Dear Students,

Good Morning and a warm welcome to today's class.

It feels really nice to meet up for yet another class this morning.

Recall that in our last class before the break, we had learnt about the KEYS

Let us now proceed further and learn about Riveted joints called as the Single Riveted Lap Joint 

What is a Lap joint?

You have learnt that a rivet is used to join two metal plates together. To form a lap joint these 2 metal plates are placed one on top of the other and the rivets are inserted through both of them. 

When a single row of rivets is used to fasten them, it is referred to as Single Riveted Lap Joint. Refer to fig 1 below. 

   

Fig 1

Exercise

Q1. Draw to scale, the Top view and Sectional front view of a single riveted lap joint on metal plates having thickness as 16 mm. 

Ans: We first do the following Calculations

we are given, t = 16 mm

1. we find the Diameter of the rivet, d = 6 (square root t) = 6 (square root 16) = 6 X 4 = 24 mm

2. margin, m = 1.5 d = 1.5 X 24 = 36 mm

3. Pitch, P = 3d = 3 X 24 = 72 mm

Now go through the video link