25 March 2026
In any construction project, whether it is building a commercial high-rise or a residential renovation, accuracy in preparing the Bill of Quantities (BoQ) and project budget is absolute. Errors in Quantity Surveying can lead to severe cost overruns or an inefficient stockpile of unused materials on-site.
As a trusted building material manufacturer, Jaya Celcon fully understands the need for efficiency among contractors and homeowners. Therefore, we provide a detailed, step-by-step technical guide to calculating the exact requirement of Celcon Blok for your structural walls.
The fundamental first step before calculating is to understand our product's standard dimensions. Produced using state-of-the-art technology, our blocks are cut with millimeter precision. The standard dimensions of Celcon Blok are:
Length: 60 cm (0.6 m)
Height: 20 cm (0.2 m)
Thickness: Available in two main variants: 10 cm (0.1 m) and 7.5 cm (0.075 m). Also Available Custom Size
To determine how many blocks are needed to cover 1 square meter of a wall, we first calculate the surface area of a single Celcon Blok.
Area of 1 Celcon Blok = Length x Height
Area = 0.6 m x 0.2 m = 0.12 m²
Using this data, we can calculate the requirement per square meter:
Blocks per m² = 1 m² / 0.12 m² = 8.33 pieces
Conclusion: For every 1 square meter of wall, you will need approximately 8.33 pieces of Celcon Blok.
In the industry, Celcon Blok is sold by volume (cubic meters or m³). The number of pieces within 1 m³ differs based on the block thickness.
A. For 10 cm Thick Celcon Blok:
Volume of 1 block = 0.6 m x 0.2 m x 0.1 m = 0.012 m³
Pieces per 1 m³ = 1 m³ / 0.012 m³ = 83.33 pieces (rounded to 83 pieces).
Coverage: 1 m³ of 10 cm thick Celcon Blok will cover approximately 10 m² of wall area (83 pieces x 0.12 m²).
B. For 7.5 cm Thick Celcon Blok:
Volume of 1 block = 0.6 m x 0.2 m x 0.075 m = 0.009 m³
Pieces per 1 m³ = 1 m³ / 0.009 m³ = 111.11 pieces (rounded to 111 pieces).
Coverage: 1 m³ of 7.5 cm thick Celcon Blok will cover approximately 13.32 m² of wall area.
Installing Celcon Blok is highly efficient as it only requires a 3 mm adhesive joint. As a technical rule of thumb:
1 sack of thin bed mortar (40 kg) generally covers a wall area of about 10 m².
This means, for every purchase of 1 m³ of 10 cm thick Celcon Blok, you ideally need 1 sack of mortar (40 kg).
Suppose you want to build a solid wall that is 10 meters long and 3 meters high using the 10 cm thick Celcon Blok.
Total Wall Area = 10 m x 3 m = 30 m² (Note: subtract the area of doors and windows if applicable).
Celcon Blok Volume Required = 30 m² / 10 m² (coverage per cubic) = 3 m³.
Mortar Required = 30 m² / 10 m² (coverage per sack) = 3 sacks (40 kg).
With these technical calculations, you can order your materials precisely with zero waste.
Consult Your Project with Jaya Celcon Do you have complex architectural blueprints that need calculating? The technical support team at Jaya Celcon is ready to assist. Visit www.celconindonesia.com to download our full technical specifications catalog or contact our customer service for a free material calculation estimate!