{"id":23430,"date":"2026-04-01T13:07:46","date_gmt":"2026-04-01T11:07:46","guid":{"rendered":"https:\/\/incoperfil.com\/guia-tecnica\/1-composite-metal-deck-what-it-is-how-it-works-and-when-it-is-used\/"},"modified":"2026-04-13T12:15:37","modified_gmt":"2026-04-13T10:15:37","slug":"1-composite-metal-deck-what-it-is-how-it-works-and-when-it-is-used","status":"publish","type":"guia-tecnica","link":"https:\/\/incoperfil.com\/en\/guia-tecnica\/1-composite-metal-deck-what-it-is-how-it-works-and-when-it-is-used\/","title":{"rendered":"1. Composite Metal Deck: What It Is, How It Works and When It Is Used"},"content":{"rendered":"

What is composite metal decking?<\/h2>\n

Composite metal decking is a cold-formed steel profile that forms the load-bearing base of a composite slab or floor system<\/a><\/strong>. Its structural behavior is based on the collaboration between steel, which absorbs tensile forces, and structural concrete, which resists compression.<\/p>\n

During the construction phase, the deck acts as permanent formwork, supporting the weight of fresh concrete, reinforcement, and construction loads without the need for traditional formwork. After curing, both materials work together, creating a composite section with high stiffness and load-bearing capacity.<\/p>\n

This system makes it possible to reduce the total slab depth (typically from 120 mm), achieve lightweight solutions, and optimize execution times compared to conventional systems.<\/p>\n

Composite decks are generally manufactured in galvanized steel or with advanced corrosion-protection coatings. They are supplied in different thicknesses and rib heights to meet the project\u2019s structural requirements. Their geometry incorporates embossments that ensure proper load transfer between the steel and the concrete.<\/p>\n

How does composite metal decking work?<\/h2>\n

The structural behavior of composite decking develops in two distinct phases:<\/p>\n

1. Formwork phase<\/h3>\n

The ribbed deck rests on the supporting structure (steel, concrete, or composite) and acts as a temporary load-bearing element. At this stage, it supports the weight of fresh concrete and construction overloads.<\/p>\n

The rib shape provides the stiffness needed to limit deflections and, in certain configurations, may allow solutions without intermediate propping.<\/p>\n

2. Composite phase<\/h3>\n

Once the concrete has hardened, the embossments in the profile ensure the transfer of forces between both materials. The deck works as tensile reinforcement<\/strong>, while the concrete forms the compressed head of the section.<\/p>\n

The result is an optimized composite section, with greater load-bearing capacity and improved in-service performance against deflection and vibration. Final performance (allowable deflections, fire resistance, or need for propping) depends on the selected profile and the adopted structural configuration.<\/p>\n

When is composite metal decking used?<\/h2>\n

Composite decking is used in projects where a lightweight, efficient, and fast-to-install structural solution is required. Its versatility allows it to be used both in new construction and in rehabilitation projects.<\/p>\n

Common applications include:<\/p>\n