An expansion joint is an empty space in a structure to allow for horizontal, vertical, and shear movements caused by temperature changes, settlement, environmental factors like wind, and earthquakes. The type of expansion joint needed depends on factors like its location, the expected movement, load requirements, and cost. Common types include covers to protect joints on facades and floors, backer rods and blankets to fill gaps, and standard floor joints with aluminum caps. Expansion joints are essential in structures to accommodate movement and prevent damage.

1. EXPANSION JOINT
Construction Technology And Service
P.P. SAVANI SCHOOL OF ARCHITECTURE

2. WHAT IS AN EXPANSION JOINT?
An expansion joint is an empty space, free of any
material between two parts of a structure. The
size of an expansion joint depends on what
deformations are possible in the construction.
Whether standard or seismic, an expansion joint
should allow horizontal, vertical and shear
movements.

3. CAUSES OF MOVEMENTS
• Concrete removal
• Expansion and contraction of the concrete
structure (temperature changes)
• Settlement of the structure
• Movements generated by the environment
(wind, vibration)
• Earthquakes

4. HOW TO CHOOSE AN EXPANSION JOINT?
• Location (floor, wall, façade, ceiling)
• Initial gap
• Expected movement
• Expected load/passage
• Waterproofing requirement
• Flush or inserted installation
• Type of finish
• Fire resistance
• Cost

5. ACOMPLETE RANGE OF Expansion Joint
 JOINT COVERS
To protect and cover expansion joints (flat and angle) on façades,
floors, walls and ceilings.
 VEDAFEU® C BACKER RODS
Officially tested and validated for joint gaps from 10 to 200 mm.
 VEDAFEU® N BLANKETS
Officially tested and validated for joint gaps up to 840 mm with
50% movement.

6.  STANDARD FLOOR JOINTS
Technical joints with aluminum corner caps and flexible inserts.
 CAR PARK FLOOR JOINTS
Watertight joints for car parks with steel side plates and flexible inserts.
 JOINTS FOR FLEXIBLE FLOORS
Special joints for use in flexible floor coverings.
 STRUCTURAL WORK RANGE
Plastic parts and profiles for the calibration of vertical and horizontal
reinforcement

7.  FLEXIBLE PROFILES
Flexible profiles adjusted for fast and economic closure of expansion joints.
 FACADE JOINTS
Technical joints to close façade, wall and roof joints.
 CONTROL JOINTS
Sealed application. In metal and flexible insert or coextruded PVC.
 ROOF JOINTS
Technical joints to close roof expansion joints.
 WATERSTOPS
Joints in concrete reinforcement, expansion, partitioning, etc.

8.  NOSING
Non-slip grooved aluminum or aluminum with nonslip insert.Plastic parts
and profiles for the calibration of vertical and horizontal reinforcement

9. JOINT COVERS
• Clip affixed aluminum or PVC joint covers. All RAL colors available including
natural wood, gold, silver,
• bronze, brass, and any other special colors.
• Extruded, drilled, countersunk joint covers up to 320 mm wide.
• Adhesive or folded joint covers in stainless steel, galvanized steel, mill finish
or anodized aluminum, or powder coated with a thickness of 5/10 to 30/10.

10. FIRE STOP SYSTEMS
• Applications: expansion joints, heads of walls, floor nosing’s, curtain walls.
• VEDAFEU C fire stop backer rods which have been officially tested and
validated for joint gaps from 10 to 200 mm.
• VEDAFEU N fire stop blankets which have been officially tested and
validated for joint gaps up to 840 mm. Movement +/- 50%.
USES
• Schools, hospitals, shopping centers, industrial buildings and
housing, airports, railway stations, leisure centers, car parks, etc.

11. EXPANSION - HORIZONTAL JOINT

12. EXPANSION - VERTICAL JOINT

13. EXPANSION JOINT SYSTEMS
• the type of movement a building is subject to impacts the joint.
• standard expansion joint allows for range of motion of ±25% of
nominal joint width
• expansion joint system specified to seismic standards supports
Forces on buildings:
• thermal expansion/contraction from temperature variations
• moisture (causes expansion)
• sway caused by wind
• differential movement (seismic events, etc.)

14. 1. floors
2. interior walls
3. ceilings
4. exterior walls
5. floor to wall
6. wall to wall
7. ceiling to wall
8. roof

15. Types of expansion joints based on material
 Metallic expansion joint
 Metallic Expansion Joints are installed in pipe work and duct systems to
prevent damage caused by thermal growth, vibration, pressure thrust and
other mechanical forces.
 Materials : all types of stainless steels and high grade nickel alloy steels.

16.  Application:
1. Heating and air conditioning installation
2. Hot water and fire protection system
3. Compressors inlet and outlet
4. Pipe with axial displacement by temperature or pressure changes
5. Thermal motors refrigeration circuit .

17.  Rubber Expansion Joints
 Rubber Expansion Joints are a flexible connector fabricated from natural or
synthetic elastomers and fabrics with metallic reinforcements designed to provide
stress relief in piping systems due to thermal changes.
 When flexibility for this movement cannot be designed into the piping system itself,
an expansion joint is the ideal solution.

18.  Problems solved like:
1. Vibration, Noise, Shock,
2. Corrosion, Abrasion
3. Stresses, Load Stress,
4. Equipment Movement
5. Vibration, Pressure Pulsation
6. Movement in a Piping System
 Usage
It's widely used in water supply and drainage, Recycled water .Air
conditioning , compressor, etc.

19.  Teflon Expansion Joints
 corrosion proof, non-aging with extraordinary flex life and unmatched
reliability.
 Usage
• widespread acceptance in the chemical processing industry,
• piping applications where acids and highly corrosive
chemicals are being handled and
• commercial heating and air conditioning systems as pump
connectors and a strategic point throughout a system.

20.  They can be used to compensate for:
• Movement, Misalignment, Axial Travel
• Angular Deflection, and or Vibration in Piping Systems

21. Types of expansion joint based on movement
 Axial compression
 Axial elongation
 Transverse or lateral
 Vibration absorption
 Angular movement

22. Types of expansion joint based on function
 Simple Expansion Joint
 Universal Expansion Joint
 Hinged Expansion Joint
 Pressure Balanced Expansion Joint
 Gimbal Expansion Joint

23. THANK YOU
PRINCE SHINGALA
BHAVIN PALADIYA
AVADH HADIYA
MAYURI CHANGELA
PRACHI SOMANI
PAL SALIA
HARSH VAGHASIYA
POOJA RAJAPARA
MEGHA SHAH
SATISH GAJERA
JASH PATEL
Construction Technology And Service
P.P. SAVANI SCHOOL OF ARCHITECTURE