These densities or unit weight of materials can be sourced from the relevant codes and standards, material data sheets, or obtained via laboratory testing. *Note that the same principle as calculating dead loads can also be adopted in determining the weight of the Superimposed Dead Load making up the construction, with the given density or unit weight of the material. To calculate, let us assume that a slab is carrying a total of 6 kN/m2. Superimposed Dead loads include the partition or interior walls, floor screeding, floor finish, ceiling loads, and MEP pipes and fixtures. To calculate dead load, the density or unit weight of the structure should be multiplied by the thickness, which will give us the weight of the structure per given area.įor a concrete slab of 0.25m thick for example, that will give us the following:Ĭonsidering the unit weight of concrete to be 25kN/m3, In a typical residential concrete structure, for example, the load of the building is to be carried by slab, we will start our calculation from there.ĭead Load is the self-weight of the structure. To understand how these loads are being calculated, Let us know first what type of material our structure will carry and how we will differentiate each accordingly. These basic loads are carried by the slab which will be distributed in beams and transferred to the columns to be resisted by the footing which is rested on the underlying soil. These loads are the basic loads of a certain structure/building. Loads in structures/buildings are composed of the self-weight of the structures or the DEAD LOAD, the Super Imposed Dead Load or SDL, and the LIVE LOADS or movable loads. In this article, we will focus on the gravity loads that a structure is carrying.
We all know that a given structure carries gravity and resists horizontal or lateral loads.
At the end of this article, you will learn at least the basics of load and its load path, what are the considerations in assigning loads in a structure, and the load calculation procedure necessary at the start of Structural Design. In this article, we will tackle how to calculate structural design loads on our structures and what considerations we need to do in order to achieve an economical design. Because these loads will dictate how heavy our structure is and the reinforcement and the size or dimension of each of the structural members will vary according to our load assumptions. As Structural Engineers, we should be very careful assigning these loads to the structure we are designing for. Perhaps the first thing for the Structural Engineers to be aware of in their structural design is the assumptions and consideration of the design loads.
Dead Load, Design Loads Calculations, Live Load, Structural Design, Superimposed Dead Load
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