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Dowel Plate

Dowel Plate Specification

Corrosion Resistant
yes

Shape
diamond

Thread Type
Metric

Surface Treatment
Plating

Capacity
high load Pcs/hr

Feature
joints

Tensile Strength
56 Newtons per Millimetre Squared (N/mm2)

Finish
Smooth

Torque
12 dyn-mm

Thickness
2.5 Millimeter (mm)

Load Capacity
1.4 Pound (lb)

Hardness
plastic

Diameter
5 Millimeter (mm)

Grade
250,300

Head Type
plastic

Standard
IS 16172

Fasteners Type
Nails

Usage
construction joints

Material
Alloy Steel

Size
110

Height
6 Millimeter (mm)

Product Type
Concrete Joint Dowel System / Diamond Dowel

Tolerance
150 Millimeter (mm)

Application
industrial,warehouse

Weight
0.8 - 1.5 Kilograms (kg)

Color
gery, silver

Length
100 -125 Millimeter (mm)

Width
0.8 - 1.5 Millimeter (mm)

Dowel Plate Trade Information

Minimum Order Quantity
20 Number

Delivery Time
24 Hours

About Dowel Plate

What is a Dowel Plate?

A Dowel Plate is a high-strength steel component used in concrete expansion and construction joints. Unlike traditional round dowel bars, these are flat, plate-shaped connectors typically housed within a plastic sleeve (or "pocketer") that is cast into the concrete.

Why is it Used?

Concrete is a dynamic materialit shrinks as it cures and expands/contracts with the weather. Without a dowel system:

Joint Spalling: The edges of the slabs would crumble under wheel loads.
Differential Settlement: One slab might sink deeper into the subgrade than the other.
Inefficient Load Transfer: The weight of a vehicle would stay 100% on one slab rather than being shared with the next.

Classification of Dowel Plates

Dowel plates are generally classified based on their geometric shape and material:

Plate Geometry:
- Square/Rectangular Plates: Provide excellent vertical support but require precise alignment.
- Diamond/Tapered Plates: These are the industry favorite. The tapered shape allows for lateral (sideways) movement of the slabs as they shrink, reducing internal stress and preventing "locking" of the joint.
Material/Coating:

Black Steel: Standard for internal, dry environments.
Galvanized Steel: Used for moisture-prone areas to prevent corrosion.
Stainless Steel: For high-corrosive environments like chemical plants or coastal areas.

Key Applications

Dowel plates are essential in high-traffic, heavy-load environments:

Warehouse Flooring: Supporting heavy forklifts and racking systems.
Industrial Plants: Managing vibration and heavy machinery weight.
Parking Lots & Hardstands: Ensuring a smooth transition for vehicles.
Airports: Handling the extreme axial loads of aircraft taxiing.

Installation Procedures

Step 1: Site Prep & Formwork: Mark joint locations on the formwork. Draw a horizontal line at mid-slab depth and vertical lines at dowel centers for accurate alignment. Position and nail the plastic sleeve bases to the timber or steel edge forms, using nails or clips. Ensure each sleeve is straight and at the correct elevation (often mid-depth of the slab). Maintain a minimum clearance (e.g. 150mm or 6) from slab corners/intersections for all sleeves.

Step 2: First Slab Pour: Place concrete for the first pour normally. Consolidate carefully around the sleeves with internal vibration to avoid voids under the sleeves. Finish the slab surface. No steel dowel should penetrate the form, since the pocket will be cast into the slab (no drilling is required).

Step 3: Remove Forms: After the first slab has gained strength, strip the edge forms. The plastic bases (sleeves) should remain embedded at the slab edge. It is often easiest to pull forms from one end so that bases stay with the slab and can be reused on the form.

Step 4: Insert Dowel Plates: Slide each dowel plate into its corresponding sleeve/pocket, aligning it as needed. The plate should slide fully into place, typically with the sleeve covering the plate by a fixed amount to allow movement. (No pounding is necessary; the plate is a tight fit.) Insert plates promptly (within 24hr) to avoid difficulty in pushing them into hard concrete.

Step 5: Second Pour: Place the concrete for the adjoining slab. Position reinforcement as normal. Pour and compact concrete around the inserted plates. Again, use care with vibration near the sleeves and plates so as not to dislodge them. Finish the joint as usual.

Step 6: Grouting/Finishing: After both pours are done and cured, fill any recess around the plate edges. Many plate-dowel sleeves include tapered tops or caps to seal the joint against slurry. Seal the joint top with compressible filler or joint sealant to prevent debris ingress. Allow adequate curing time before opening slabs to traffic.

Advantages:

Feature	Dowel Plates (Tapered)	Traditional Round Bars
Lateral Movement	Allows sideways movement, preventing stress.	Restricts lateral movement; can cause cracking.
Steel Efficiency	More steel at the joint (where it's needed).	Requires more total steel for the same load.
Installation	Easier to align via sleeves.	Highly prone to misalignment (tilting).
Joint Stability	Superior vertical load transfer.	Moderate load transfer.

Surya Engineerings Dowel Plate Solutions

Surya Engineering manufactures specialized dowel plate systems designed to eliminate the common failures of traditional round bars. Their products focus on high load-bearing capacity and joint protection.

Engineered for Structural Reliability

Designed for demanding environments such as industrial floors and warehouses, the dowel plate efficiently creates secure joints that manage high loads with ease. Its alloy steel construction and corrosion-resistant surface treatment ensure a long service life, even under constant mechanical stress.

Precision Dimensions and Versatility

With its metric threading, diamond shape, and variable length and width, this dowel plate accommodates a wide array of applications. The polished plate, available in grey and silver, integrates seamlessly into projects needing aesthetic and functional excellence.

Performance Compliant with Standards

Adhering to IS 16172 standards, the dowel plate undergoes rigorous quality checks. Users benefit from a product that not only supports high capacity per hour but also maintains consistent mechanical properties across distributed, exported, or manufactured batches.

FAQ's of Dowel Plate:

Q: How is the dowel plate used in construction joints?

A: The dowel plate is embedded within concrete or masonry at joint locations, helping to transfer loads across adjacent slabs or panels. This process enhances structural integrity, minimizes movement, and ensures a continuous surface in industrial and warehouse floors.

Q: What materials is this dowel plate made from, and why are they beneficial?

A: This product is fabricated from alloy steel for strength and durability, enhanced by a plated, corrosion-resistant finish. The plastic head type increases versatility, and the smooth surface facilitates seamless installation and optimal load transfer.

Q: When should I use a dowel plate of this specification?

A: The plate is ideal for use in high-load environments-such as warehouses or industrial plants-where strong, stable joints are essential for structural safety and long-term performance.

Q: Where can the dowel plate be implemented effectively?

A: It is particularly well-suited for use in constructing expansion joints or load-bearing connections in concrete slabs, pavements, industrial floors, and warehouse infrastructures.

Q: What is the process for installing these dowel plates?

A: During construction, the dowel plate is positioned at the joint interface before concrete pour. Its metric threads and precise tolerances ensure a secure fit, while the plastic head allows for efficient handling during placement.

Q: How does the dowel plate's shape and finish contribute to its performance?

A: The diamond shape provides balanced load distribution, reducing stress concentrations. The smooth, plated finish not only adds corrosion resistance but also allows the dowel to move slightly with the concrete, accommodating natural shifts without compromising joint integrity.

Q: What are the primary benefits of using this dowel plate?

A: The plate offers reliable load transfer, long-term corrosion resistance, and compliance with IS 16172 standards. Its high tensile strength and quick installation capabilities make it a cost-effective and robust solution for diverse construction joint applications.

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