The quarter finals of the UEFA champions league will be concluded on the 12th and 13th of April.
From the results of the first leg played. It’s looking good for Liverpool and Real Madrid. The Reds beat Benfica 3-1 away, while Real Madrid defeated Chelsea 3-1 at Stamford Bridge. Karim Benzema scored a hat trick in that match. Bearing any upset, we expect Madrid and Liverpool to go through. It must be stressed that Chelsea can still spring a surprise in Madrid.
Bayern Munich lost to Villarreal by 0-1 in the first leg, but the tables can be overturned in Munich in the return leg. They are still favourites to go through.
Manchester City laboured hard to beat Atletico Madrid 1-0, but City have it all to play for in the second leg in Spain on the 13th of April. Wish City best of luck.
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A slab in terms of its dimensions consists of a thickness(depth), length and width. Understanding this concept will correctly Enable you to calculate and apply slab loading.
In reinforced concrete design, the weight of concrete is usually taken as 24kN/m³. So let’s look at an example.
A reinforced concrete slab is to be constructed having a length of 5m, width of 3m and depth of 200mm. The slab loading can be calculated as follows.
Calculating slab load in kN/m²
Note that 200mm = 0.2m..
..and weight of concrete is 24kN/m³
In most design calculations the unit of the slab load is in kN/m². In this case the slab load is calculated by multiplying 24kN/m³ by thickness (depth) of slab which is 0.2m
So 24kN/m³ × 0.2m = 4.8kN/m²
(4.8kN/m² is the unfactored dead load of the slab)
Calculating slab load in kN
To represent the slab load in kN, just multiply the unit weight concrete which is 24kN/m³ by the volume of the slab.
Note that the volume of the slab is length x width x depth
So 24kN/m³ × 0.2m × 5m × 3m = 72kN
In practice, you will be calculating slab loading from structural plan or floor panel arrangement. A typical structural plan is shown below.
Structural plan
The slab panels are label P and a number. Let’s take a look at one of the slab panels, panel P8.
The panel’s thickness is 150mm or 0.15m. Also it is a 2 way slab. You can also easily calculate the length and width of the slab from the dimensions shown.
To calculate the unfactored dead load of the slab in kN/m², ( which is what we have been doing so far), just multiply 24kN/m³ by the slab thickness which is 0.15m;
