Post tension concrete slabs have gained a reputation for their strength, durability, and versatility in the construction industry. When it comes to screeding concrete during the construction of a post-tension concrete slab, manual screeding is the best current option. There has been a debate between traditional manual screeding and the use of laser screeding technology. In this blog post we will delve into why manual screeding stands out as the preferred method for post-tension concrete slabs, offering unique advantages that cannot be matched by laser screeding. The following are some key reasons as to after years of experience in the concrete construction industry, we still consider manual screeding a better option in small to mid-size concrete construction projects as opposed to laser screeding:

Precision and Control
One of the main reasons why manual screeding is favored over laser screeding for post-tension concrete slab construction is the level of precision and control it provides. Skilled concrete workers have honed their expertise in using leveled screed pins and screeding boards to level and finish concrete, ensuring that the concrete project meets all required specifications. This hands-on approach allows for real time adjustments resulting in a smooth and even surface that precisely matches project requirements.

Adapting to Uneven Substrates
Post-tension concrete slabs are often poured over diverse substrates, each with its own unique characteristics and irregularities. Manual screeding enables experienced workers to effectively adapt to these variations. By identifying low spots on the substrate, they can skillfully manipulate the screeding boards to compensate for any inconsistencies, creating a surface that fits snugly with the substrate.

Reducing the Risk of Smoothing/Spalling
Overworking, which happens when the concrete is worked excessively, for too long, or has too much surface water added while working it, can result in surface defects and compromise the strength of the slab. Manual screeding allows workers to closely monitor the moisture content and curing time of the concrete, reducing the chances of smoothing/spalling and ensuring durability and strength.

Minimizing Equipment Expenses
While laser screeding offers automation and efficiency, it requires an investment in equipment costs. For projects with budgets or smaller scales manual screeding proves to be a way more cost-effective option. It requires equipment mainly consisting of screeding boards and hand tools making it accessible for a range of different construction projects.

Enhanced Personalization
By screeding concrete skilled craftsmen can demonstrate their artistry and expertise. They can work around details and complex designs, achieving a level of customization and attention to detail that laser screeding struggles to match. Manual screeding allows for the creation of textures and patterns that are just not possible to match with a laser screed.

While laser screeding technology has undoubtedly brought efficiency in the construction industry, manual screeding remains the best choice for post-tension concrete slab construction. The precision, adaptability, and personalized touch offered by concrete journeymen during manual screeding cannot currently be replicated by machines. Recognizing and embracing the craftsmanship involved in screeding is crucial. It not only guarantees a properly built high quality concrete structure, but also highlights the skill and knowledge that professional concrete craftsmen bring to concrete construction projects. While technology keeps progressing, it’s important to remember the enduring worth of techniques that still excel in construction projects.