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It is an easy drawn way with formulas about calculating the
cutting length of the Triangular Stirrups. Follow the link for the video.
To calculate the cutting length of Triangular Stirrups first
a column need to be drawn. Then with a diagram of 8mm a triangle is drawn into
the column. The length of the column is 600mm and the height is 500mm.
The main bar with the black dotted need to be
found out. The center to centre of the triangle is dotted and the height and
weight need to calculate. By applying the formulas and the drawn figure you can
calculate it correctly.
This
construction article is extracted from an exclusive article written by Sourav
Dutta, Manager-Civil.
Normally, the
stirrups are assigned with its external dimensions. As for instance, a 250mm x
300mm stirrup contains the 250mm and 300mm dimensions in perpendicular
directions as illustrated in the following figure.
Now,
a stirrup contains 2 bends, in the following figures, the types of bends are
given. Guideline of lowest bend length is adhered to Cl.3.8 of BIS2502
(illustrated in following figure).
The cutting
length of stirrup should be calculated along along centre-line. The calculation
is made on the basis of the Table VIII of BIS2502 (Fig 4) toward most common
sizes of stirrups as illustrated.
In
accordance with IS:2502 – 1963 (reaffirmed 2004) Indian standard code for
Bending and fixings of bars for concrete reinforcements.
Section 3.8
Binders, Stirrups, Links and the Like – Toward binders, stirrups, links etc,
the straight section apart end of the curve at the end should not be under
eight times the nominal size of the bar.
It should be observed in Table VIII that the dimensions “A”,
“E” or “C” as demonstrated are all internal dimensions. But as external
dimensions of any stirrup, determine the size of the stirrup, hence to work out
cutting length, the internal dimensions are changed to external dimensions
prior to apply the formula of cutting length.
