Why Can Buildings Crack Even Though They've Just Been Built?

A newly completed building should still be in prime condition. However, in practice, cracks are often discovered just weeks or months after construction is completed. This naturally raises concerns, both in terms of safety and investment value.

What exactly causes new buildings to crack? Here's the explanation:

1. Structures Not Complying with Civil Engineering Calculations
The most common cause of cracks in new buildings is errors in structural calculations. This can occur due to:

• Column or beam dimensions that are too small
• Use of inappropriate reinforcing steel
• Loads on the structure exceeding its bearing capacity

Solution: Ensure planning and supervision are carried out by professionals, and use quality materials such as SNI-certified rebar from a trusted distributor.

2. Unstable Foundations
Cracks can occur due to uneven ground settlement due to foundations that are not suited to the soil conditions at the site. For example, using shallow foundations on soft soil.

Solution: Conduct a soil test before construction and choose the appropriate type of foundation, such as piles, for unstable soil.

3. Poor Material Quality
Brittle concrete, sand mixed with soil, or lightweight bricks that crumble easily will affect the durability of the structure. Low-quality materials are prone to causing:

• Hairline cracks in walls
• Porosity in floors or beams
• Cracks in joints between elements

Solution: Use SNI-compliant building materials and purchase from authorized distributors such as PT Intisumber Bajasakti, which offers a wide selection of reliable materials.

4. Improper Casting
Casting carried out without proper techniques (for example, without wire mesh, without a vibrator, or during rainy weather) can create air cavities in the concrete and premature cracking.

Solution: Use wire mesh for floor casting and ensure the curing process (concrete curing) is carried out for at least 7 days to prevent the concrete from drying too quickly.

5. Temperature Changes & Material Shrinkage
Cracks can also be caused by extreme temperatures, especially in walls. Materials such as plaster and paint can shrink as they dry, especially if not mixed with the right additives.

Solution: Use ready-mix mortar formulated to withstand temperature changes and structural movement.

Building Cracks Are More Than Just an Aesthetic Issue
Small cracks can be a sign of serious structural problems if not addressed early. Therefore, it's important to choose:

• Quality building materials
• Experienced planners and workers
• Trusted distributors like PT Intisumber Bajasakti

📍 Contact us for your rebar, mortar, wire mesh, and pile needs.
☎️ Phone: +6221 66675999
🌐 Website: www.intisumberbajasakti.com

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