Overview

The document presents the Fit Slab system by Daliform Group, a polypropylene formwork designed for creating voided slabs combined with reinforced concrete. It is intended for use with prefabricated pre-stressed concrete beams, lattices, or prefabricated lattice slabs, enabling rapid construction of lightweight, high-performance slabs in both new and reconstruction projects.

Key Features and Advantages

• Lightweight polypropylene modules that interlock easily, reducing installation time and labor costs (up to 200 m²/day by a 3-person team).
• Significant reduction in structural weight, leading to lower loads on frameworks, load-bearing walls, foundations, and improved seismic performance.
• Allows installation of electrical, water, and heating ducts within the voids beneath the slabs.
• Excellent mechanical strength and fire resistance, with options for Class 1 and 0 fire ratings suitable for public buildings without false ceilings.
• Improved site cleanliness, waste management, and worker safety compared to traditional hollow brick or EPS lightening methods.
• Flexible sizing by cutting modules lengthwise or widthwise to fit project requirements.

Technical Specifications

Fit Slab modules are produced from ALAPLEN® CV30 polypropylene, with a dry resistance of 150 kg on an 8x8 cm footprint. They comply with environmental and quality certifications (ISO 9001, ISO 14001, OHSAS 18001, SA 8000) and hold European technical approvals (EOTA).

Typical module dimensions and weights are provided, along with pallet and packaging details for logistics planning.

Applications

• Voided slabs with prefabricated pre-stressed reinforced concrete beams or lattices.
• Voided slabs with prefabricated reinforced concrete lattice slabs.
• Cast-in-situ reinforced concrete slabs with parallel or cross-hatched ribbing.
• Suitable for civil and industrial buildings, including seismic risk areas where the slab acts as a diaphragm transmitting horizontal forces.

Regulatory Compliance

Design and calculation methods adhere to Italian legislation and standards, including:

• Law 05.11.1971 no. 1086
• Ministerial Decree 04.01.1993 and 14.01.2008
• Circular 2 February 2009, n. 617 C.S.LL.P.
• Eurocode 2 for concrete structures

Load tables compare Fit Slab slabs with conventional slabs (brick blocks, EPS blocks), showing reduced slab weights and loads.

Installation Procedure

1. Prepare and shore lattice beams according to design spacing.
2. Place Fit Slab modules by interlocking them between beams, adjusting size by cutting if necessary.
3. Insert “abutment” closure modules at row ends and cut edges to prevent concrete overflow.
4. Place electro-welded mesh (20x20 cm, Ø 6 mm) over the formworks.
5. Cast reinforced concrete cap (minimum class C25/30, consistency S5), filling beams first, then fascia, kerbs, ribbing, and upper slab continuously.
6. Allow appropriate curing time before removing supports; close slab intrados with plasterboard or other finishes after installing technological systems.

Note: Fit Slab modules are waterproof and do not require wetting before casting.

Specifications for Execution

• Flat or sloping reinforced concrete voided slab with height H = specified.
• Use of normal or pre-stressed reinforced concrete beams or prefabricated lattice slabs.
• Interlock Fit Slab recycled plastic modules on beams.
• Install abutment modules at ends and cut locations.
• Supply and install electro-welded mesh as specified.
• Concrete casting with specified resistance and consistency, avoiding segregation.

Logistics and Handling

Details on pallet capacities and container loading for various transport means (tractor, trailer, semi-trailer, 20 and 40 feet containers) are provided to optimize delivery and storage.

Technical Support and Services

• Feasibility studies including structural pre-dimensioning, optimization, cost analysis, and ventilation evaluation.
• Calculation reports certifying Daliform system execution.
• Support for executive design with formwork positioning plans and product lists.
• On-site technical assistance during construction phases.

Important Notes

The document emphasizes that the provided tables and data are indicative and generic; special cases require consultation with Daliform Group technical office. Waiting times for concrete curing depend on concrete type and weather conditions. The company reserves the right to update product information without notice. Environmental factors may cause tolerance variations in recycled materials.

Contact information and certifications (ISO standards, legal rating) are included for quality assurance.