Concrete Padstone 440mm x 140mm x 140mm – PAD05
The Concrete Padstone 440mm x 140mm x 140mm, also known as PAD05, is a high-strength precast concrete unit designed to create a secure and stable bearing beneath structural beams and lintels. It helps distribute concentrated structural loads over a larger area of supporting brickwork or blockwork.
When a beam supports weight from floors, roofs or walls, the load is transferred through the beam’s bearing points into the masonry below. Standard bricks and blocks may not always be suitable for accepting this concentrated pressure directly. Installing a correctly specified concrete padstone creates a stronger intermediate bearing and helps transfer the load safely into the surrounding wall.
The PAD05 format measures 440mm long, 140mm wide and 140mm high. Its balanced dimensions make it suitable for structural details requiring an extended bearing length within a 140mm-wide section of masonry.
What is PAD05 used for?
PAD05 Concrete Padstones can be incorporated into many structural masonry projects where a beam or lintel requires a strong, level bearing surface.
Typical applications include:
- Supporting structural steel beams
- Providing bearings beneath concrete lintels
- Supporting steel lintels where specified
- Creating new structural openings
- Load-bearing wall alterations
- Residential extensions and renovations
- New-build construction
- Commercial masonry projects
- Supporting structural elements within brickwork or blockwork
The padstone’s purpose is to spread the imposed load. It is not a decorative block or a general substitute for ordinary masonry.
PAD05 dimensions
The nominal dimensions are:
- Length: 440mm
- Width: 140mm
- Height: 140mm
- Product reference: PAD05
- Approximate imperial size: 18″ x 5½” x 5½”
- Material: High-strength precast concrete
The 440mm length provides a substantial bearing area, while the 140mm width and height make the unit suitable for compatible wall and pier arrangements.
Dimensions alone should not be used to decide whether this padstone is appropriate. Structural suitability depends on factors such as the beam reaction, end-bearing requirement, strength of the supporting masonry and overall wall construction.
High-strength concrete construction
PAD05 is manufactured from dense, high-strength precast concrete. This provides a stronger bearing than a standard brick or conventional building block and helps the product withstand the concentrated loads created beneath structural beams.
The solid concrete construction also produces a durable component suitable for permanent incorporation within masonry. When correctly selected and installed, it forms part of the building’s load-transfer system.
The padstone should not be confused with a standard dense concrete block. A purpose-manufactured padstone is specifically intended for structural bearing applications and should be installed according to the approved construction details.
Benefits of a precast padstone
Using a precast padstone avoids the need to construct formwork and cast a concrete bearing on site. The product arrives ready to install, helping reduce labour and delays associated with mixing, placing and curing an in-situ padstone.
Factory manufacture also helps provide greater consistency in the product’s dimensions and concrete performance. This can make the unit easier to specify and incorporate into the masonry.
Key practical advantages include:
- No on-site concrete casting required
- No separate shuttering or formwork needed
- Ready to incorporate into masonry
- Consistent factory-manufactured dimensions
- High-strength concrete construction
- Reduced waiting time compared with site-cast concrete
- Suitable for new-build and refurbishment work
Although the padstone itself is precast, the bedding mortar and supporting masonry must still be allowed to achieve adequate strength before the full structural load is applied.
Structural specification and installation
The required padstone dimensions should be calculated or approved by a qualified structural engineer. PAD05 must only be used where a 440mm x 140mm x 140mm padstone is shown on the structural drawings or otherwise confirmed as suitable.
Do not select a padstone solely by matching its width to the beam or wall. The engineer must consider the load carried by the beam, the available bearing length, the strength of the masonry and how the forces will be transferred through the structure.
The supporting brickwork or blockwork must be stable, level and capable of accepting the load. Install the padstone on a full bed of suitable mortar and position it in the orientation specified on the drawings.
The beam or lintel should sit correctly on the padstone with the required end bearing. Do not cut, drill or modify the unit unless the proposed alteration has been expressly approved by the structural engineer.
Inspect the padstone before installation. A unit with severe cracks, major damage or defects that may affect its structural performance should not be used without professional assessment.
Appearance and manufacturing variations
Concrete is manufactured using cement, water and naturally sourced aggregates. Differences in raw materials, curing conditions and production batches may cause variations in the finished product.
Please note: Colours and sizes may vary slightly due to the manufacturing process. Product photographs are provided as a representative guide, and the item supplied may differ slightly in appearance.
Minor differences in colour, shade, surface texture and finish are normal characteristics of precast concrete. Small air pockets, surface marks and slight irregularities around the edges may also occur during production.
These cosmetic variations do not necessarily indicate a fault, provided the padstone remains structurally sound and falls within the manufacturer’s permitted tolerances. Padstones are functional structural components, so exact colour matching should not be expected.
Key benefits
- High-strength precast concrete padstone
- Provides a solid bearing beneath beams and lintels
- Helps distribute concentrated structural loads
- Suitable for structural masonry applications
- Ready to install without casting concrete on site
- Nominal dimensions of 440mm x 140mm x 140mm
- Commonly identified as PAD05
- Suitable for new-build and renovation work
- Consistent factory-manufactured component
- Suitable for residential and commercial projects
The Concrete Padstone 440mm x 140mm x 140mm PAD05 provides a dependable structural bearing for beams and lintels within suitable masonry construction. Always check the structural engineer’s drawings and calculations to confirm the required padstone size, position and orientation before ordering or installation.
