The concrete used in floor slabs accounts for large greenhouse gas emissions building construction. Solid slabs, often today, consume much more than ribbed built by pioneer structural engineers like Hennebique, Arcangeli and Nervi. first part of this paper analyses the evolution slab systems over last century their carbon footprint, highlighting that have been abandoned mainly sake construction...

Laminated concrete slabs can deliver desirable structural properties and effectively improve the speed of construction. According to their basic specifications, laminated comprise a 60 mm precast slab 70 layer cast in situ, with steel truss bar at height 80 mm. This paper studies effects on mechanical slabs. A simple but accurate method is proposed for calculating stiffness The test results sho...

One of the most important assumptions which is being used in analysis and design of buildings against lateral forces is the rigid-floor assumption. Lateral rigidity of diaphragms depends on several factors such as: type of the structure, dimensions of structure, rigidity and location of lateral load bearing elements, stiffness of frames, type and thickness of floors, number of stories and etc. ...

As PT floor slabs become thinner, a doubt about its vibration behavior and comfort of occupants arises. This paper investigates several approaches for determining the post-tensioned human induced vibrations which can give high accuracy be considered as simple tools guide designers. It also studies with different span length, thicknesses relates response to natural frequency floor. The results s...

Abnormal loads due to natural events, implementation errors and some other issues can lead to occurrence of progressive collapse in structures. Most of the past researches consist of 2- Dimensional (2D) models of steel frames without consideration of the floor system effects, which reduces the accuracy of the modeling. While employing a 3-Dimensional (3D) model and modeling the concrete slab sy...