The objective of column stirrups is to resolve and check the longitudinal (main) steel bars in columns to bulging against the vertical forces (compression force) particularly in the middle of the column prior to get to the concrete.

To build up the quantities (diameter or by spacing) of stirrups at both ends of the column with the intension of combating the horizontal forces which produce horizontal shear forces on both ends of the column.

Stirrups attach and retain longitudinal bars of steel in exact place. The purpose is to resist the buckling or extending the longitudinal reinforcement as well as to resist concrete from splitting outwards.

This construction video tutorial focuses on the topic of finding out the cutting length of diamond stirrups in column.

In this video, the drawing of rhombus shaped diamond stirrup is given with various dimensions. The dimension of stirrup column is 500 (length) x 400 (width) mm. The clear cover in column is given as 40 mm. By deducting it from both side of the length and width, we get 420 mm (length) x 320 mm (width). The diameter of stirrups (d) is given as 8 mm.

Based on the above dimensions, the cutting length is detected by applying the following formula :-

(4x H) + (2x10xd) – (3x2xd) – (2x3xd)

To gather more information on the detailed process, watch the following video.

Video Courtesy : L & T - Learning Technology