How to Choose the Best Sylhet Sand for Construction Projects
Not all sand is equal. Learn how to choose the right grade of Sylhet Sand for your construction project based on FM grade, silt content, and usage type.
Choosing the right sand for construction is one of the most important decisions a builder or engineer can make. In Bangladesh, Sylhet Sand is the gold standard — but even within Sylhet Sand, there are key factors that determine which grade suits your specific project.
1. Understand FM Grade (Fineness Modulus)
Fineness Modulus (FM) is the primary quality measure for sand. For structural concrete (RCC beams, columns, slabs), you need FM between 2.3–2.8. For plastering and mortar, lower FM (1.5–2.2) is preferred.
2. Check Silt and Clay Content
High silt content weakens concrete bonding. Quality sand suppliers like Sylhet Sand test each batch for silt content and guarantee it stays within BNBC limits.
3. Choose Based on Application
- RCC work: Sylhet Sand 2.5 FM or Fazilpur Sand
- Plastering: Sunamganj Sand
- Heavy foundation: Vulaganj Sand
- General purpose: Chattak Sand
4. Verify Source and Freshness
River sand that has been stockpiled for months may have elevated silt from rainwater. Always ask your supplier for freshly collected sand.
At Sylhet Sand, we provide batch-level FM testing results on request. Contact us today for a free consultation on the right sand grade for your project.