Heavy Sub-Structure Grade

Chatka Bricks

High-Density Rugged Bricks for Below-Plinth & Foundation Work

Chatka Bricks are hard-fired, heavy utility bricks that have undergone intense kiln vitrification. With high density and rugged surface interlocking, they are the contractor’s first choice for underground foundations, drain masonry, and heavy sub-grade work.

Dense hard-fired Chatka bricks stacked for foundation and trench masonry supplyHeavy Sub-Structure Grade
Technical Specifications
Standard Dimensions:9" x 4.25" x 2.75" (approx. 225 x 110 x 70 mm)
Compressive Strength:6.0 – 8.0 N/mm²
Water Absorption:< 18% by dry weight
Average Weight:Approx. 3.0 – 3.2 kg per brick
Efflorescence (Shora):Nil (Hard vitrified matrix)
Product Overview

Hard-Fired, High-Density Bricks for Foundations, Septic Tanks & Sub-Grade Masonry

Foundations and below-plinth walls face constant soil moisture, backfill pressure, and heavy dead loads. Chatka Bricks are fired in the hottest sections of the kiln, resulting in a dense, slightly over-vitrified ceramic body that is extremely hard and resistant to soil acids. While they may feature slight surface irregularities or darker firing blushes that make them unsuitable for fine exposed plaster, their rugged strength and unbeatable economy make them the ultimate choice for underground foundation trenches, soak pits, drainage chambers, and sub-structure retaining walls.

Key Advantages & Properties

Maximum Hardness & Density: Over-vitrified clay structure resists water pressure and ground moisture
High Cost Efficiency: Significantly lower cost per thousand units than grade-one masonry bricks
Exceptional Interlocking: Rough surface profile bonds aggressively with thick foundation mortar
Chemical & Acid Resistance: Fired ceramic body resists organic soil acids and groundwater salts
Zero Decay: Will not decompose, disintegrate, or soften over centuries underground

Best Suited Applications

Building foundations & below-plinth masonry courses
Underground water tanks, soak pits & septic tank walls
Drainage channels, culverts & sewer manholes
Plinth filling retaining walls & ground-level boundary bases
Order & Supply Information

Minimum Order: Tractor-trolley (~1,500 – 2,000 bricks) or dumper truckload (~3,500 – 5,000 bricks).

Dispatches: Fast bulk dispatches across Alwar, Bhiwadi, Behror, and surrounding construction hubs.

Care: Loaded for maximum structural density; site dumping or manual offload available.

Shubham Quality Standards

Why Choose Chatka Bricks from Shubham Bricks?

Manufacturing with sweet water and selected local clay gives our bricks verified strength and long-term wall stability.

01

Intense Kiln Vitrification

Chatka bricks are drawn from kiln zones where heat is highest, fusing the clay particles into a non-porous, stone-like block.

02

Superior Sub-Surface Durability

Unlike ordinary bricks that can soften in waterlogged subsoil, Chatka bricks retain their full structural load-bearing capacity underground.

03

Direct Heavy Haulage

Supplied directly from kiln floor to foundation trench by dedicated dumpers or tractor trolleys for fast site dumping.

Product Guidance

Frequently Asked Questions About Chatka Bricks

Specific questions regarding application, quantity, and masonry best practices.

Because Chatka bricks are fired in the hottest section of the kiln, their clay is tightly vitrified and stone-like. They resist groundwater pressure, will not disintegrate underground, and cost significantly less than 1st Grade bricks.
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Order Chatka Bricks for Your Site Today

Direct dispatches from our Alwar kilns. Punctual site delivery across Alwar, Bhiwadi, Tijara, Behror, and surrounding areas.

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