This document discusses types of joints used in welded connections. It begins by defining a joint as a separation that allows components to move relative to each other. It then describes two main types of joints - lap joints and butt joints. Lap joints involve one part placed over another, while butt joints involve ends of two parts placed together on the same plane. The document goes on to provide details on five common welding joints - butt, corner, tee, lap and edge joints. It explains the structure and weld types used for each. The major purpose is to inform students about different joint configurations used in welded steel structures.

1. Government polytechnic, college jalna.
Civil Engineering Department
Micro project Details
ANNEXURE-II
Evaluation Sheet for the Micro Project (*****)
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Academic Year: 2022-2023 Course: CE Semester: fifth semester
Name of faculty: Mr Shailesh kale sir. Course Code: 22502 Subject: Design of steel
structure
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Title of the Projects
“TYPES OF JOINT IN WELDED CONNECTION…….””.
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COs addressed by Micro projects:
A.
B.
C.
Major Learning Outcomes Achieved by students by doing the projects
A.
B.
C.
Comments /Suggestion about Term work /leadership /Interpersonal Communication (if any)

2. Marks Evolution:
Staff Remark:
Roll
No
Enrollment
No
Name Of
Students
Seat
Number
Marks Out of 6
for
performance in
group activity
(D5.Col 8)
Marks Out of
6 for
performance
in group
activity
D5. Col
Total
Out Of
10
21 2001200301 Mansi Santosh
shinde
22 2001200302
Vaibhav
sonwane
23 2001200303 Thakur
Dheerajsing
Shivsing
24 2001200304 Rohan viju
wahul
Guide H. O.D Principal
Mr Shailesh kale sir A.S.bhageriya Dr.M.D.Waghmare sir

3. Government Polytechnic,Jalna
Civil Engineering Department
Micro project on
Subject: Design of steel and rcc structure
Group Members
Sr.No Roll No
Enrollment
No
Exam seat
no
Name Of the
Students
1 21 2001200301 Mansi santosh shinde
2 22 2001200301 Vaibhav sonwane
3 23 2001200303 Thakur dheerajsing shivsing
4 24 2001200304 Rohan viju wahul
Guide H.O.D
Mr.Shailesh kale Mr.A.S.bhageriya
Principal
Dr.M.D.Waghmare

4. Undertaking
I declare that the work presented in this project titled “prepare a model of
types of joint in welded connection . Submitted to the civil engineering
department. Bareilly for the award of “Diploma in Civil Engineering
Department” is my original work. I have not plagiarized or submitted
the same work for the award of any other diploma.
In case this undertaking is found incorrect, I accept that my diploma may
be unconditionally withdrawn.
Date:
Place:jalna
Name of the students
1.mansi shinde
2.vaibhav sonwane
3.dheerajsing Thakur
4.rohan wahul

5. CERTIFICATE
This Certified that the work contained in the project titled “prepare a
model of types of joint in welded connection
Name of the students
1.Mansi shinde
2. vaibhav sonwane
3.Dheerajsing Thakur
4.Rohan wahul
Has been carried out under my supervision and that this work has not
been submitted elsewhere for diploma.
Mr.shailesh kale sir
Civil Engineering Department
Government Polytechnic,Jalna
HOD PRINCIPAL
Anil bhageriya sir Dr.M.D.Waghmare sir

6. Defination of joint:-
Joint is a separation provided in a building that allows it's
component parts to move with respect to each other; a joint where two placements
of concrete meet. The purpose of a construction joint is to allow for some
horizontal movement, while being rigid against rotational and vertical movement.
Type of lap joint :-
(1)Lap joint
(2)Butt joint
Lap joint-:-Joint is a separation provided in a building that allows it's component
parts to move with respect to each other; a joint where two placements of concrete
meet. The purpose of a construction joint is to allow for some horizontal
movement, while being rigid against rotational and vertical movement.
Welding joints is an edge or point where two or more metal pieces or plastic pieces
are joined together. The two or more workpieces ( either metal or plastic) are
joined with the help of a suitable welding process to form a strong joint. According

7. to the American Welding Society, there are basically five types of welding joints
and these are Butt, Corner, Lap, Tee, and edge joint.
The 5 basic welding joints are
1. Butt joint
2. Corner joint
3. Lap joint
4. Tee joint and
5. Edge joint
types of welding joints
Let’s discuss each one in detail
1. Butt Joint:
The joint which is formed by placing the ends of two parts together is called butt
joint. In butt joint the two parts are lie on the same plane or side by side. It is the
most simplest type of joint used to join metal or plastic parts together.
The different weld types in butt welding are
(i) Square Butt weld
(ii) Bevel groove weld

8. (iii) V-groove weld
(iv) J-groove weld
(v) U-groove weld
(vi) Flare-V-groove weld
(vii) Flare-bevel-groove butt weld
Friction Stir Welding – Working Principle, Advantages, Disadvantages with
Application
Explosive Welding – Equipment, Types, Working, Advantages and Disadvantages
with Application
Friction Welding Process – Working, Types, Advantages, Disadvantages with
Application
2. Corner Joint
The joint formed by placing the corner of two parts at right angle is called the
corner joint ( see fig above). Two parts which are going to be weld with corner
joint form the shape of L
The different weld types in corner joint are as follows
(i) Fillet weld

9. (ii) Spot weld
(iii) Square-groove weld or butt weld
(iv) V-groove weld
(v) Bevel-groove weld
(vi) U-groove weld
(vii) J-groove weld
(viii) Flare-V-groove weld
(ix) Edge weld
(x) Corner-flange weld
3. T-Joint
The joint which is made by intersecting two parts at right angle (i.e at 90 degree)
and one part lie at the centre of the other. It is called as T joint as the two part
welded look like english letter ‘T’.
The types of welds in T joint are as follows
(i) Fillet weld
(ii) Plug weld

10. (iii) Slot weld
(iv) Bevel-groove weld
(v) J-groove weld
(vi) Flare-bevel groove
(vii) Melt-through weld
4. Lap Joint
The lap joint is formed when the two parts are placed one over another and than
welded ( see fig above). It may one sided or double sided. This types of welding
joints are mostly used to join two pieces with different thickness.

The Various weld types in lap joint are

11. (i) Fillet weld
(ii) Bevel-groove weld
(iii) J-groove weld
(iv) Plug weld
(v) Slot weld
(vi) Spot weld
(vii) Flare-bevel-groove weld
5. Edge Joint
The joint formed by welding the edges of two parts together are called
edge joint. This joint is used where the edges of two sheets are adjacent
and are approximately parallel planes at the point of welding. In this
joint the weld does not penetrates completely the thickness of joint, so it
can not be used in stress and pressure application.
The various weld types in this welding joint are:
(i) Square-groove weld or butt weld
(ii) Bevel-groove weld