Variations among Load Bearing Wall and Partition Wall

The wall is categorized as follow: Load Bearing Wall, Partition Wall.

Load Bearing Walls: If beams and columns are not utilized (Frame Structure), load from roof and floors are transmitted to foundation through walls. Such walls are known as bearing walls.

The purpose of these walls is to securely transmit the load. The vital section of the walls is located adjacent to the openings of doors and windows and the positions where concrete beams stand. Minimum wall thickness should be 200 mm. The slenderness ratio of wall called as ratio of effective length or effective height to thickness should not surpass 27.

Effective height of walls with respect to actual height H

a. Lateral as well as rotational restraint 0.75 H
b. Lateral as well as rotational restraint at one end and only lateral 0.85 H restraint at other.
c. Lateral restraint but no rotational restraint at both ends 1.0 H
d. Lateral and rotational restraint at one end and no restraint at other 1.5 H

Effective length of walls of length L

a. Continuous and supported by cross walls 0.8 Length.
b. Continuous at one end and supported by cross walls at 0.9 Length the other end.
c. Wall supported by cross walls at each end 1.0 Length.
d. Free at one end and continuous at other end 1.5 Length.
e. Free at one end and supported by cross wall at other end 2.0 Length.

2. Partition Walls: If the structure belongs to frame structure than partition walls are constructed to separate floor area for different Utilities and it stands on floors. The partition walls are used to bear only self weight. Generally partition walls are thin. According to the requirement, these walls range from clay brick partition, Fly ash bricks partition, glass panel partition, wood panel partition, and aluminium and glass panels partition.

Variations among load bearing wall and partition walls

LOAD BEARING WALL

a. They bear loads from roof, floor, self-weight etc.
b. They are solid and capture more floor area.
c. Since the quantity of material is more, the construction cost is higher.
d. Stones or bricks are the main material for building up the wall.

PARTITION WALL

a. They bear self-weight only.
b. These walls are thin and as a result capture less floor area
c. Since, the quantity of material is less, the construction cost is reduced.
d. Stones are not applied for building up the walls.

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Published By
Rajib Dey
www.constructioncost.co
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Benefits of post lintel structure

Post & Lintel is an easy form of construction that includes posts to bear horizontal beams or lintels found in timber-framed work or in columnar and trabeated architecture.

Stonehenge is a good example of post and lintel construction.

Post & Lintel System:

1. Post lintel belongs to a frame structure.
2. It is made of concrete materials by blending aggregates, gravel, sand and cement with water.
3. It is light weight or heavy weight structure.
4. The proportion of mixing comes as 1:2:4, 1:3:6 & 1:1.5:3 etc.
5. Currently, it can be utilized to form steel with regards to several codes and specifications like 80ksi, 60ksi & 40ksi.
6. 60ksi steel is mostly found.

Characteristics of post & lintels:

a. Post & lintels are illustrated as frame structure but columns and louvers.
b. Solid and void relationship is minor.
c. The invert beam is visible from above.
d. Existence of continuous beam.
e. The columns are arranged along the age of the building.

Benefits of post-lintel:

1. Post lintel structure in the outside facades enhances the appearance of the building.
2. Often, the enormous or inflexible masses are handled gently with the use of formwork of the post lintel to provide an elegant appearance.
3. Bigger space (column to column distance) of building can be designed in this system.
4. For the greater extent, the height of the lintel gets larger and for this a large distance appears as small due to the unavailability of clear height.
5. Sometimes, this issue produces visual disruption that can be resisted in flat slab.
6. The construction cost of this system is quite elevated for the laborious casting process of beam and slab and the application of R.C.C
7. The maintenance cost of this system is low as compared to other structural system because of it’s endurable characteristics.
8. Ingression of heat gets decreased in this system since the heat is transmitted from the slab to beam and then from beam to floor.
9. The control of openings allows the fewer amount of heat in the building.
10. Because of free flowing plan, the light and ventilation can easily be entered into the building.
11. This structural system contains less self-loads that can minimize the risk of earth quake.
12. The system can resist buckling or bending effect of the building from the powerful wind flow.
13. The system has good fire resistance strength for the construction material (R.C.C).
14. The system has fewer scope of failure as compared to other structural system.



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Published By
Rajib Dey
www.constructioncost.co
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Virtual Work Method For Frames

Forces operating on frame can cause three types of internal forces like bending moment, axial force and shear force. Therefore, it is possible to view frame member as combination of truss and beam member.

In a simple term, virtual work method can be defined as “Completed External work is identical to completed internal work”.

In frames, axial deformation is generally small corresponding to bending deformation and it is normal to disregard axial deformations. In this video, all the prospective deformations are considered.

Virtual Work facilitates to work out determinate and indeterminate structures as well as estimate their deflections. Therefore, it can obtain everything that all the other methods can attain collectively.

Using the virtual work equations to a frame structure is very easy like segregating the frame into a series of “beams” and measuring the virtual work for each section.

Besides, while assessing the deformation of a frame structure, it is essential to take into consideration both bending and axial internal force components.

Ref.: civilengineeringdaily.com

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Published By

Rajib Dey

www.constructioncost.co

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