What is a Hidden Beam? Hidden beam is a reinforced concrete beam, also called concealed beam provided within the depth of supporting slabs. So, the depth of hidden beam is the same as slab depth as it can be noticed in Figure 2. Concealed beams are popular and form an essential part of modern reinforced concrete framed structures. Lastly, strict and rigid architectural consideration led to the provision of hidden beams. In this manner, the load which might be brick wall will be dealt with and height of the floor will not be compromised. In this article, different aspect of reinforced concrete hidden beams will be discussed.