How to design RCC lintel?
RCC Lintel Design Procedure: The steps of RCC lintel design (single span or continuous with a few openings) are same as the design of a simple beam. 1. The lintel width is equal to the wall thickness. 2. Consider a suitable depth of the lintel. 3.
How to calculate concrete lintel volume?
Summary:
- Cement = 6.33 bags.
- Sand = 0.44 cum
- Aggregates = 0.88 cum
- Water = 101 litre.
What does lintel mean in construction?
Types of Lintel
- Timber Lintel. Wooden or Timber Lintels are the most seasoned sorts of the lintel. ...
- Stone Lintel. Rectangular bits of stone can be utilized as a lintel. ...
- Reinforced Concrete Lintel. At present, reinforced concrete lintels are very common in use. ...
- Brick Lintels. ...
- Reinforced Brick Lintels. ...
- Steel Lintels. ...
How to design reinforced masonry lintels?
PRECAST CONCRETE LINTELS FOR CONCRETE MASONRY CONSTRUCTION
- INTRODUCTION. Lintels function as beams to support the wall weight and other loads over an opening, and to transfer these loads to the adjacent masonry.
- LINTEL DIMENSIONS. Precast lintel dimensions are illustrated in Figure 1. ...
- LINTEL DESIGN. ...
- DESIGN EXAMPLE. ...
- NOTATIONS. ...
What is a concrete lintel beam?
Lintel Detail A lintel is a beam placed on the openings like doors, windows etc. The width of lintel beam is equal to the width of wall, and the ends of it is built into the wall. Lintels are classified based on their material as brick lintel, concrete linter and timber lintel.
What are lintels used for?
Simply put a lintel is a beam that is usually placed above windows and doors. The lintel's main job is to support the load from the structure above it. Both doors and windows are not constructed to structurally withstand massive loads by themselves. Lintels are mainly found in masonry or brick structures.
When can you use a concrete lintel?
Underground. In some cases when building under ground level, a concrete lintel is the preferred option to a steel lintel. Galvanised steel will be vulnerable to moisture and potentially rust, whereas the steel in a prestressed concrete lintel is protected by the concrete.
Are concrete lintels good?
The thermal properties, resistance to fire and corrosion and cost still ensure that concrete lintels are an attractive alternative to steel lintels. Concrete lintels can reduce the cold bridge in properties because of the nature of the product. It is a good insulator and therefore acts as better insulation than steel.
What does a lintel look like?
A lintel is a beam placed across the openings like doors, windows etc. in buildings to support the load from the structure above. The width of lintel beam is equal to the width of wall, and the ends of it is built into the wall. Lintels are classified based on their material of construction.
What is the difference between a lintel and a beam?
The beam carries the load from slab and transfers it to the column from, column it is transferred to the footing and from footing finally to the soil. Whereas lintel carries the load of the wall above the openings and transfers it to walls only.
Do all concrete lintels have steel in them?
Concrete lintels usually have steel rods running the length of the beam to increase their strength under tension. You can buy pre-stressed concrete lintels, which are significantly lighter than standard concrete.
Can you drill through a concrete lintel?
It is entirely possible to drill into a concrete lintel, however, it will not be easy, and there may be some consequences, especially when you are doing it on your own. When it is incorrectly done, damaging your concrete lintel can be a result, and you will need to have it repaired.
Do all windows need a lintel?
Lintels are required for all openings over timber frames greater than 600mm in width, & for all openings over steel frames greater than 900mm.
How can you tell if a lintel is concrete or steel?
The easiest way to tell if a lintel is concrete or steel is by appearance. Concrete lintels are often gray in color and look similar to a concrete block. Concrete lintels have an “unfinished” style and would often look great with brick walls due to concrete's contrasting gray shade to the brick's classic red color.
Can you use a concrete lintel on a load-bearing wall?
Installing a lintel in a load-bearing wall can be a very dangerous job as there is always the risk of the whole collapsing and someone being injured in the process. Therefore, before opening the wall, it is advisable to seek the advice of a construction expert.
How far can a concrete lintel span?
For spans greater than 1200mm, lintels should be adequately propped during construction at a maximum of 1200mm centres.
What are Lintels?
A lintel is an element of construction used to span or bridge a gap between two structural supports (commonly vertical columns).
Precast Concrete Lintels Width
Very often, the width of the lintel depends on the structure where it will be installed. For example, a beam that is several parts wide would require a bigger lintel compared to beams that are in one piece.
Precast Concrete Lintels Thickness
The thickness of the lintel also differs depending on what they are going to be used for and their installation requirements.
Precast Concrete Lintels System
The precast concrete lintel system is a unique and versatile building assembly system that is easily constructed with a minimum of material and labor.
Precast Concrete FAQs
a) Precast concrete lintels can be used to span up to 40m between columns, without intermediate beams.
Different Types of Lintels
There are different types of Lintels used in construction. The different types include:
Lintels FAQs
Reinforced concrete lintels are one of the most common types of lintels found in the construction industry around the world.
What is a lintel in masonry?
Lintels function as beams to support the wall weight and other loads over an opening, and to transfer these loads to the adjacent masonry. Because of their rigidity, strength, durability, fire resistance and aesthetics, the most common types of lintels for concrete masonry construction are those manufactured of precast reinforced concrete ...
What are precast lintels?
Precast lintel dimensions are illustrated in Figure 1. Precast concrete lintels are manufactured to modular sizes, having specified dimensions corresponding to the concrete masonry units being used in the construction.
Why should lintels be marked on the top?
Lintels should be clearly marked on the top whenever possible to prevent the possibility of improper installation in the wall. In the event the top of the lintel is not marked and may be installed upside down, the same size bars should be used in both the top and bottom.
What is a reinforced concrete lintel?
At present, reinforced concrete lintels are very common in use. In this type, reinforcement is used to overcome the low malleable issue in concrete. They are developed in present-day structures. They are suitable for heavy loads and larger spans. Their thickness is kept around up to 8 centimeters for every meter. RCC lintels can be either precast or cast-in-situ. Generally, precast reinforced cement concrete lintels are used when the lintel span is smaller. Lintel width should be the same as wall width. The depth of the lintel depends on the length of the span and the loading's magnitude.
What are the different types of lintels?
Lintels are classified into the following types according to the elements of their development: Timber lintel. Stone lintel. Reinforced concrete lintel.
What are reinforcement bars?
Concrete, though strong in compression, is fragile to tensile stress, so main reinforcement bars are used at the bottom to resist the tensile stress. Half of these bars are cranked at the ends. Shear stirrups are provided to withstand shear stress. Typically, cement, sand, and aggregates are mixed in 1:2:4 ratio to form cement concrete mortar. This lintel has a handful of advantages: 1 They are durable, rigid and strong. 2 The reinforced concrete lintel has fire-resisting properties. 3 They are economical and easy in construction. 4 The main advantage of the RC lintels is adaptability to suit any size and shape.
How thick should a stone lintel be?
As a thumb rule, the thickness is taken as 4 cm. Per 30cm length of span and the minimum thickness should be 8 cm. This sort of lintel will be firm and solid. There are a few inconveniences also of the stone lintel.
What are flitched lintels?
Sometimes, timber lintels are reinforced by the arrangement of mild steel plates at their top and base; such lintels are called flitched lintels. It has a few other disadvantages-. It is less durable. Timber being combustible it is vulnerable to fire. These lintels tend to be structurally weak.
Why are reinforcement bars used at the bottom?
Concrete, though strong in compression, is fragile to tensile stress, so main reinforcement bars are used at the bottom to resist the tensile stress. Half of these bars are cranked at the ends. Shear stirrups are provided to withstand shear stress.
What is a lintel beam?
What is Lintel? A lintel is one type of beam which is utilized to support the above wall or partition material when openings like doors, windows, and so forth are necessary to provide a building structure. The primary function of the lintel is to take loads originating from the high wall and transfer its heap to the side walls.
What is a lintel in construction?
Steel Lintel. Structural is used in building construction can use to support the openings in the walls. As discussed previously, there should be a structural or nonstructural element to carry the loads just above the opening. Steel lintels are wide can be observed in steel buildings.
What are the two types of lintels?
Mainly there are two types of lintels depending on the type of construction. 01. Constructed on all Walls. For single-story buildings, lintels are provided on all the walls and they are connected together. Figure 01 indicates the arrangement of the continuing lintel.
Why are lintel beams used?
Lintel constructed to support the opening in the walls when there is an infill wall to be constructed between the wall opening and the floor beam. In addition to this, there are more other reasons for having the lintel beams and they are discussed in detail in the latter part of this article.
What is a lintel beam?
Lintel beams are designed based on the available loads and the supporting span. Typical details are prepared based on the project details for the construction team to proceed with construction without much difficulty. If the span is known, the arrangement of the lintel can be selected.
What is the most widely used construction material?
Out of all the following types of lintels, the most widely used construction material is the concrete. Concrete Lintel. Timber Lintel.
Is stone a structural material?
Stone Lintel. It not common to use stone as a structural material to carry the loads. Specially tensile stresses do not cause failures in this material though they are very good in responding for compressive loads. However, in ancient constructions, stone beams have been used as structural beams.
Can stone be used as structural beams?
However, in ancient constructions, stone beams have been used as structural beams. The section sizes are fairly higher when compared with other types of elements used for this purpose. If we use stone in construction, the following could also be considered.
Why are lintels used in construction?
in a structure because of their strength, rigidity, fire resistance, economy and ease in construction.
What are the different types of lintels used in construction?
Types of Lintel used in Building Construction. Lintels are classified based on the material of construction as: 1. Timber Lintel. In olden days of construction, Timber lin tels were mostly used. But now a days they are replaced by several modern techniques, however in hilly areas these are using.
What is the width of a lintel beam?
The width of lintel beam is equal to the width of wall, and the ends of it is built into the wall. Lintels are classified based on their material of construction. Horizontal lintels are easy to construct as compared to arches.
What is the most common type of lintel?
2. Stone Lintel. These are the most common type, especially where stone is abundantly available. The thickness of these are most important factor of its design. These are also provided over the openings in brick walls. Stone lintel is provided in the form of either one single piece or more than one piece. The depth of this type is kept equal ...
What is a flitched lintel?
In case of wider walls, it is composed of two wooden pieces kept at a distance with the help of packing pieces made of wood. Sometimes, these are strengthened by the provision of mild steel plates at their top and bottom, called as flitched lintels. 2. Stone Lintel.
How deep is a stone lintel?
Stone lintel is provided in the form of either one single piece or more than one piece. The depth of this type is kept equal to 10 cm / meter of span, with a minimum value of 15 cm. They are used up to spans of 2 meters.
How deep should a reinforced brick lintel be?
The depth of reinforced brick lintel should be equal to 10 cm or 15 cm or multiple of 10 cm. the bricks are so arranged that 2 to 3 cm wide space is left length wise between adjacent bricks for the insertion of mild steel bars as reinforcement. 1:3 cement mortar is used to fill up the gaps.
What is a plain concrete lintel?
Plain Concrete Lintels. This type of lintels are prepared with plain concrete as steel bars are not used in it. Hence, they are not usable for heavy loads. They are made for a span of up to one meter. Concrete is very strong in compression but is weak in tension, that’s the reason they are not used in a longer span.
What type of lintel is used in hilly areas?
They are most commonly used in hilly areas. 2. Stone lintels. Rectangular pieces of stone can be used as lintel. This type of lintel will be very firm and strong, but it weighs too much. Their thickness is kept approximately 10 cm per meter. Stone lintels must be employed as per accordance with natural layering.
What is a timber lintel?
In case of wider walls, timber lintel is composed of two wooden pieces kept at a distance with the help of wooden distance pieces. Sometimes, timber lintels are strengthened by the provision of mild steel plates at their top and bottom; such lintels are called flitched lintels.
What is a lintel beam?
The Lintel is a horizontal member placed just over the openings of doors, windows, verandas, etc. to support the load of the masonry work over It. Lintel beams provide supports to the openings in building and transfer that load safely to the masonry walls or columns. Their width must be equal to the width of the wall – where they are constructed.
What is the difference between reinforced concrete and reinforced concrete?
Concrete is very strong in compression but is weak in tension , that’s the reason they are not used in a longer span. 2. Reinforced Concrete Lintels. In this type, reinforcement is used to overcome the low tensile problem in concrete. They are very strong and can be employed in very big sizes and higher spans.
Why are lintels used in modern buildings?
In the present, R.C.C lintels are the most commonly used type, due to its strength, fire resistance, rigidity, and ease of construction.
What is a rolled steel joist?
It consists of rolled steel joists or channel sections either used singly or in the combination of two or three units. When used singly, the steel joist is either embedded in concrete or cladded with stone facing, to increase its width to match with the width of the wall.
What is a lintel?
In construction, a lintel is a beam placed across the top of an opening in a wall. Used above empty spaces like entrances and windows in buildings, lintels support the weight of the structures above them. Typically, the beams fit seamlessly into the wall, matching the width of the wall and extending past either end of the opening.
Where are lintels used?
Lintels support the weight of structures above wall openings, doorways and windows in primarily brick and masonry buildings. Open spaces in walls often lack structural integrity because there is nothing above the gap to support the load on top of the opening. To combat this, lintel beams extend past either side of the doorway or opening.
Types of lintels
Many types of lintels aid in building construction. Here is a list of common lintel material types:
What materials are used for a lintel?
A number of different materials can be used as a lintel within a fireplace. Traditionally, wooden mantels were more commonly used as lintels, or where an arch was preferred over a flat horizonal fireplace opening masonry materials such as brick or stone would have been used.
Where should a lintel be located?
A lintel should be located across the top of the fireplace opening between the outer wall of the fireplace and the base of the chimney. The image below shows where the lintel is located on our fireplace. The typical location for a fireplace lintel.
What is the purpose of a fireplace lintel?
The purpose of a fireplace lintel is to spread the load from above the opening of a fireplace across down to the sides of the fireplace firebox. A fireplace lintel can be made from a number of different materials and the type and materials of lintel will differ between each fireplace.
Where is the lintel on a fireplace?
A fireplace lintel is located just above the firebox at the top of the opening. As a lintel is an important structural component, and may not provide any aesthetic value, lintels can be commonly found towards the back area of the fireplace opening where it meets the throat of the chimney.
Is a steel lintel combustible?
As steel isn’t a combustible material, certain clearance distances may not be required when using a steel lintel. Our steel lintel up close heading into the sides of the firebox. Steel lintels can come in L-sections or channel sections and can be hidden towards the back of a fireplace opening out of view.
Can a fireplace lintel be a brick?
In certain cases, a lintel can instead be an arch of masonry materials such as stone or brick, but horizontal and flat lintels can be more preferable due to being easier to construct and install. Arches made from masonry materials could replace the use of a horizontal lintel. A fireplace lintel may also be referred to as a fireplace lintel bar ...
Is a wood fireplace lintel safe?
As wood is a combustible material, timber fireplace lintels aren’t anywhere near as common as they use to be for safety reasons. However, wood can be more aesthetically pleasing than other lintel materials such as steel and so can be paired with steel section to provide both the benefits of looks and strength.
