# How do you find the tributary area of a two way slab?

## How do you find the tributary area of a two way slab?

From each given point of the slab, which column is the closest? To solve this problem, we can identify every column’s neighbor, and divide the distance in half by drawing a centerline. The area on the columns side of the centerline will be its’ tributary area.

What is the formula for tributary area?

How Do You Calculate Tributary Area? The area that it supports equals the tributary width times the unit length. The load w that that unit length supports equals the tributary area (1*tw) times the uniform pressure load q.

### How do you calculate the tributary area of a one way slab?

1.1 One-Way Slabs. The tributary area, AT, for use in Equation 16-23 for one-way slabs shall not exceed an area defined by the slab span times a width normal to the span of 1.5 times the slab span.

What is tributary area concept?

The tributary area is defined as the area of floor or roof (in plan) that causes loading on a particular structural element.

#### How do you find the tributary area of a truss?

Determining Simple Tributary Area Tributary area is defined as the loaded area the truss supports, where area is equal to the truss span times its tributary spacing. Tributary spacing of a truss is defined as half of the sum of the two distances to the adjacent trusses on both sides.

What is tributary length?

It’s dimension transverse to the joist is half the distance to the next joist on either side (also known as the tributary width) and it’s length is the length of the joist. The total load (in force units) on the joist equals the tributary area (area units) times the uniform pressure loading (force per unit area).

## What is a two way slab?

The two-way slab is a slab which is generally supported on all sides of walls or beams, and whose length to breadth ratio is less than two and it twists or bends in both direction while transferring the loads to the walls or beams.

How to determine the tributary area of a slab?

Let consider a slab supported by beams and columns, to begin structural analysis for each member, we need to know the amount of load transferred to this member, the amount of load transferred to any member can be determined using tributary area (loading) concept. the geometry of a structure will determine the shape of the tributary area.

### What is two-way slab with beams design and detailing?

Two-Way Slab with Beams Design and Detailing (CAC Design Handbook) The concrete floor slab system shown below is for an intermediate floor to be designed considering superimposed dead load = 1.6 kN/m2, and unfactored live load = 4.8 kN/m2. The lateral loads are independently resisted by shear walls. The use of flat plate system will be checked.

Two-Way Slab with Beams Design and Detailing (CAC Design Handbook) The concrete floor slab system shown below is for an intermediate floor to be designed considering superimposed dead load = 1.6 kN/m2, and unfactored live load = 4.8 kN/m2.

#### How do you calculate area load on a slab?

In this example, the pressure load from the slab is transferred directly to the beams. Since the girders are not directly supporting the slab, the system is considered one-way. The area load is thus calculated as: w = q t w = 1.2 × 3 / 2 = 1.8 k i p / f t