Sketch a G+1 residential plan according to Vaastu Shastra and Calculation of Loads as per IS code

Structural drawings required to be provided to the site for construction:

1. Centre line drawing
2. Footing and column layout with reinforcement details.
3. Column schedule with reinforcement details
4. Plinth beam layout with reinforcement details
5. First floor beam layout with reinforcement details
6. First floor slab layout with reinforcement details
7. Lift pit and headroom reinforcement details.

CALCULATION OF LOADS FROM THE STRUCTURAL MEMBERS AS PER IS CODE:

Aim:

To determine the loadings of structural elements such as Dead load, Live Load, Wind load as per IS code in the building plan.

Procedure:

Given Data:

• Column Size = 250x250mm
• Beam size = 300x450mm
• Slab Thickness = 125mm
• Height of the wall = 4.5m
• Unit weight of concrete = 25 KN/m³

Assume No of column = 10nos

Solution:

i) Calculation of Dead Load:

For Column

Dead load of Column = Number of column x Total volume of concrete x Unit weight of concrete

= 10 x (0.25*0.25*4.5) x 25

Dead load of Column = 70.31 KN.

For Beam

Dead Load of beam = Total volume of concrete x Unit weight of concrete

= (0.3*0.45) x 25

Dead Load of Beam = 3.375 KN/m

For Slab

Assume Slab size = 4m x 4m

Dead load of slab = (4*4*0.125) x 25 = 50 KN.

ii) Calculation of Live Load:

. For Vertical loads, the minimum live load of a Residential building is calculated by using Table 1 of IS 875 - 1987 revised 2008.

In this Structure, we are using UDL loading system so we refer UDL value along with table 1 of IS 875.

As per IS 875-1987, For residential buildings of dwelling houses for all rooms and kitchen.

Live Load of Column, Beam and slab = 3.0 KN/m².

iii) Calculation of Wind Load:

• Design wind pressure, Pz = 0.6Vz^2
• So we find Vz = Vb*k1*k2*k3*k4

Where,

Vb - Basic wind speed for Chennai = 50 m/s

k1 - Probability factor = 1.0 (Ref as per table 1 of IS 875 - 1987, revised 2015)

k2 - Terrain, height factor - Category 3 = 0.91 ( Ref as per table 2 of IS 875 - 1987, revised 2015)

k3 - Topography factor = 1.0

k4 - Importance factor for Cyclonic region = 1.3 ( as recommended in IS15498)

Therefore,

• Vz = 50*1.0*0.91*1.0*1.3
• Vz = 59.15 m/s

Pz = 0.6 Vz^2

Pz = 0.6 x 59.15²

Pz = 2099 N/m² = 2.1 KN/m².

Wind Load on Individual members:

F = (Cpe - Cpi) A Pd.

Where,

Cpe - external pressure coefficient = 1.0 (ref as per table 5 of IS 875 -1987)

Cpi - internal pressure coefficient = 0.75 (ref IS875)

A - Surface area of Structural element

Pd - Design wind pressure

Wind Load, F = (1.0 - 0.75) x 0.3 x 0.3 x 20.99

F = 0.472 KN.

Result:

• Dead load of Column = 70.31 KN
• Dead load of Beam = 3.375 KN/m
• Dead load of slab = 50 KN
• Live load of structural member = 3 KN/m²
• Wind load of structural member = 0.472 KN.

Sketch drawings is attached by photo images. Please find attachment