Page 156 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Fig 6 Fig 7

Fig 8

Method of indicating and dimensioning of rivets

Generally rivets are indicated by their centre lines thickened in the direction of and at right angles to the seam.
(Fig 1)

The Table No.1 shows the symbols for rivets.

Fig 1

To distinguish between bolts and rivets in a side view or section, it may be useful to add an arrow (angle about
90°) at each end of the centre line of the bolts/rivets.
In case to nuts for bolts if any, this is marked by double arrow as in Fig 2.
The centre lines for rivets/bolts shall be represented by continuous thin lines. (Fig 3)
The centre line or the neutral fibre is indicated when necessary by a long chain thin line is shown in Fig 4.

In case of special methods of dimensioning a note should be added to explain to which feature the dimension,
refers For example dimension referred to centre line or dimensions referred to graduation. (Fig 5)

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CITS :Engineering Drawing (Mechanical) - Exercise 8