1.
COMPONENTOF
STRUCTURAL
STEELWORK

2.
In structural steelwork joining one component to another we
use bolt is a common method. Sometimes bolting may be
removed on sites or onto the shop and Axtella structures have
the advantage that all instruments can be separated very
easily because of some reason. and much more businessman
uses weldings for shop connection but shop bolting is
generally found a cheaper way. the bolting is a universal
medium for connection. the main function of a bolt is to join 2
components to one another. for steelworkers detailers need
to understand how the bolts have to work

3.
Various types of bolts
Bolts have 6 heads and nuts, parallel shanks, and threads cut or
rolled into the shanks. They come in standard shank diameters of
12 mm, 16 mm, 20 mm and 24 mm in a large range of lengths and in
various grades of strength
• Type 1 — bolts of medium-carbon steel, in sizes 1 2 to 11 2 in.
diameter, inclusive
• Type 2 —bolts of low-carbon martensite steel, in sizes 1 2 to 1 in.
diameter, inclusive (not to be hot galvanized)

4.
• Type 3 — bolts having atmospheric corrosion resistance and
weathering characteristics comparable with those of A588 and
A242 steels in sizes 1 2 to 1 2 in. diameter, inclusive.Bolt holes
The holes for the bolts will usually be punched or drilled and
will have a diameter 2 mm larger than the bolt shank diameter
for bolt sizes up to 24 mm diameter and 3 mm larger for bolts
of greater diameter. Such holes are called clearance holes;
they facilitate the assembly of components by making
allowance for slight inaccuracies in the fabrication of the
steelwork. Reference should bemade to specific codes where
variations exist.

5.
The three most commonly used types of bolt are the following:
(a) grade 4·8 ordinary bolts
(b) grade 8·8 precision bolts
(c) high-strength friction-grip bolts.
These bolts are used for force
transfer by friction between the connected parts
the rectangular pattern is usually followed for the arrangement
of the bolt holes. The holes are in rows and the holes in one row
are opposite those in other rows, because if it it gives us a neat
and clear appearance. pitch is called spacing between bolts in
the longitudinal direction of the member and cross-center
distance is called spacing at right angles

6.
. Holes in the flanges of I- and H-sections and channels and the legs
of angles are usually placed on lines at a set distance from the web
centers of the I- and H-sections (gauge lines or cross-center lines) or
from the backs of channels or angles. We will work with your project
team to incorporate your specific shop standards and drawing styles
to provide a smooth transition from shop to field erection.
At Axtella structures we use a 3D software program from Autodesk
called Advance Steel. This program is ranked as one of the top
software programs on the market. Modelling all projects in 3D,
allows us to get a realistic view of what the finished project will look
like and has several beneficial features to help the project go
smoothly.

7.
FOR MORE DETAILS Address :
D-77, Noida Sector 63 Pin Code
: 201301
phone no: 9034380905,
8572045330
VISIT ON : https://axtella.co.in