Concrete Beams & Joists

Concrete Beams & Joists

Description
Description

A concrete beam is a structural element that supports loads from floors, walls, and other beams. Concrete beams are made of concrete, which is strong in compression, and steel reinforcement, which is strong in tension. The steel reinforcement helps to resist the tensile forces that are created when the beam bends under load. Concrete beams are an essential part of any building or structure and are typically found in a variety of structures, including buildings, bridges, and dams.

History
History

The history of concrete beams can be traced back to the 18th century, when the first reinforced concrete structures were built in France and England. The first concrete beam was patented in 1867 by Joseph Monier, a French gardener. Monier used steel rods to reinforce concrete tubs and beams, which made them stronger and more durable. In the late 19th century, the use of concrete beams became more widespread, and they were used in a variety of structures, including bridges, buildings, and dams.

Future
Future

Concrete beams and joists are evolving with cutting-edge technologies. Prefabricated concrete components are on the rise, ensuring quicker construction times and consistent quality. Additionally, advancements in lightweight concrete materials make installations easier and structures more resilient. The introduction of fiber-reinforced concrete enhances durability and reduces cracks. With green building trends, we're seeing more eco-friendly concrete mixes that reduce carbon footprints. All these innovations aim to build sturdier, longer-lasting, and environmentally responsible structures.

Common Questions
Common Questions
What types of failure can occur in a concrete beam?

There are two main types of failure that can occur in a concrete beam: flexural failure and shear failure. Flexural failure occurs when the beam is unable to support the applied load and bends too much. Shear failure occurs when the beam is unable to resist the shear forces acting on it.

How are concrete beams connected to concrete columns?

There are many ways to connect a concrete beam to a concrete column. The most common method is to use a shear key. A shear key is a projection on the face of the column that fits into a groove on the face of the beam. The shear key helps to transfer the shear force from the beam to the column. Another common method is to use a dowel. A dowel is a steel rod that is embedded in the concrete of the beam and column. The dowels help to transfer the tensile force from the beam to the column.

What types of buildings use concrete beams?

Concrete beams are used in a variety of buildings, including residential, commercial, and industrial buildings. They are also used in bridges, parking garages, and other structures. Concrete beams are strong and durable, and they can support a lot of weight in situations with a large amount of people.

Buildings

* Under Development *

36”, 48” | 91, 122 cm
17”-42” | 43-107 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Box
122.000
107.000
3050.000
50
https://p3d.in/e/pWKR8
GUIDE
3D
Concrete Beam - BoxPerspective view of a 3D model of Concrete Box BeamPerspective view of a 3D model of Concrete Box Beam
12’ | 3.66 m
29” | 74 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Box Girder
366.000
74.000
3050.000
50
https://p3d.in/e/ubKwj
GUIDE
3D
Concrete Beam - Box Girder3D model of Concrete Box Girder viewed in perspective3D model of Concrete Box Girder viewed in perspective
48”, 60”, 72” | 122, 152, 183 cm
20”, 24”, 28”, 32”, 36” | 51, 61, 71, 81, 91 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Channel
183.000
91.000
3050.000
5
https://p3d.in/e/aGOGy
GUIDE
3D
Concrete Beam - ChannelView of Concrete Channel Beam in 3D available for downloadView of Concrete Channel Beam in 3D available for download
16”, 18”, 22”, 26” | 41, 46, 56, 66 cm
28”, 36”, 45”, 54” | 71, 91, 114, 137 cm
70’-165’ | 21.3-50.3 m
Concrete Beam - I-Section
66.000
137.000
5030.000
55
https://p3d.in/e/bclWN
GUIDE
3D
Concrete Beam - I-SectionPerspective view of a 3D model of Concrete I-BeamPerspective view of a 3D model of Concrete I-Beam
18”-36” | 45.7-91.4 cm
18”-36” | 45.7-91.4 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - L-Section
91.400
91.400
3050.000
5
https://p3d.in/e/Guzl3
GUIDE
3D
Concrete Beam - L-SectionPerspective view of a 3D model of L-Section Concrete BeamPerspective view of a 3D model of L-Section Concrete Beam
49.5” | 126 cm
47.25”-110.25” | 120-280 cm
65’-210’ | 20-64 m
Concrete Beam - NU Girder
126.000
280.000
6400.000
20
https://p3d.in/e/LBBxr
GUIDE
3D
Concrete Beam - NU Girder3D model of NU Girder viewed in perspective3D model of NU Girder viewed in perspective
8”-36” | 20.3–91.4 cm (Typical); 48” | 122 cm (Max)
16”-72” | 40.6–183 cm (Typical); 96” | 244 cm (Max)
40’-100’ | 12.2-30.5 m
Concrete Beam - Rectangle, 1:2
91.400
183.000
3050.000
5
https://p3d.in/e/TpAwn
GUIDE
3D
Concrete Beam - Rectangle, 1:2View of 1:2 Rectangle Concrete Beam in 3D available for downloadView of 1:2 Rectangle Concrete Beam in 3D available for download
8”-36” | 20.3–91.4 cm (Typical); 48” | 122 cm (Max)
12”-54” | 20.3–137 cm (Typical); 72” | 183 cm (Max)
40’-100’ | 12.2-30.5 m
Concrete Beam - Rectangle, 2:3
91.400
137.000
3050.000
5
https://p3d.in/e/WEbOO
GUIDE
3D
Concrete Beam - Rectangle, 2:3Perspective view of a 3D model of 2:3 Rectangle Concrete BeamPerspective view of a 3D model of 2:3 Rectangle Concrete Beam
48”, 52” | 122, 132 cm
11” | 28 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Slab, Solid
132.000
28.000
3050.000
5
https://p3d.in/e/mCzqS
GUIDE
3D
Concrete Beam - Slab, Solid3D model of Solid Slab Concrete Beam viewed in perspective3D model of Solid Slab Concrete Beam viewed in perspective
36”, 48” | 91, 122 cm
15”, 18”, 21” | 38, 46, 53 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Slab, Voided
122.000
53.000
3050.000
5
https://p3d.in/e/D3y61
GUIDE
3D
Concrete Beam - Slab, VoidedView of Voided Slab Concrete Beam in 3D available for downloadView of Voided Slab Concrete Beam in 3D available for download
18”-36” | 45.7-91.4 cm
18”-36” | 45.7-91.4 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - T-Section
91.400
91.400
3050.000
10
https://p3d.in/e/Hhc67
GUIDE
3D
Concrete Beam - T-Section3D model of T-Section Concrete Beam viewed in perspective3D model of T-Section Concrete Beam viewed in perspective
42” | 107 cm
63”, 72” | 160, 183 cm
70’-165’ | 21.3-50.3 m
Concrete Beam - T-Section, Bulb
107.000
183.000
5030.000
40
https://p3d.in/e/EijQS
GUIDE
3D
Concrete Beam - T-Section, BulbPerspective view of a 3D model of Bulb T-Section Concrete BeamPerspective view of a 3D model of Bulb T-Section Concrete Beam
8’, 10’, 12’, | 2.44, 3.05, 3.66 m
32”-40” | 81-102 cm
70’-120’ | 21.3-36.6 m
Concrete Beam - T-Section, Double
366.000
102.000
3660.000
20
https://p3d.in/e/yRmOf
GUIDE
3D
Concrete Beam - T-Section, DoublePerspective view of a 3D model of Double T-Section Concrete BeamPerspective view of a 3D model of Double T-Section Concrete Beam
18”-36” | 45.7-91.4 cm
18”-36” | 45.7-91.4 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - T-Section, Inverted
91.400
91.400
3050.000
10
https://p3d.in/e/BDf1Y
GUIDE
3D
Concrete Beam - T-Section, Inverted3D model of Inverted T-Section Concrete Beam viewed in perspective3D model of Inverted T-Section Concrete Beam viewed in perspective
76”, 88” | 1.93, 2.24 m
60”-84” | 152-213 cm
40’-100’ | 12.2-30.5 m
Concrete Beam - Tub Girder
224.000
213.000
3050.000
5
https://p3d.in/e/4DquI
GUIDE
3D
Concrete Beam - Tub Girder3D model of Concrete Tub Girder viewed in perspective3D model of Concrete Tub Girder viewed in perspective
Concrete Beam - Slab, Voided
Scale illustration of Voided Slab Concrete Beam compared to other concrete beam types

A voided slab concrete beam is a type of reinforced concrete beam that has hollow cores in the middle. This reduces the weight of the beam and allows it to span a greater distance. The voids are created by placing prefabricated concrete blocks into the formwork before the concrete is poured. The blocks are then removed after the concrete has cured. Voided slab concrete beams are often used in bridges and other structures where weight is a major concern.

Voided Slab Concrete Beams are available in a range of sizes with widths of 36”, 48” (91, 122 cm) and depths including 15”, 18”, 21” (38, 46, 53 cm). Voided Slab Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of Voided Slab Concrete Beam seen in elevation and plan
A voided slab concrete beam is a type of reinforced concrete beam that has hollow cores in the middle. This reduces the weight of the beam and allows it to span a greater distance. The voids are created by placing prefabricated concrete blocks into the formwork before the concrete is poured.

Voided Slab Concrete Beams are available in a range of sizes with widths of 36”, 48” (91, 122 cm) and depths including 15”, 18”, 21” (38, 46, 53 cm). Voided Slab Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of Voided Slab Concrete Beam seen in elevation and plan
Concrete Beam - Slab, Voided
Height:
Width:
36”, 48” | 91, 122 cm
Length:
40’-100’ | 12.2-30.5 m
Depth:
15”, 18”, 21” | 38, 46, 53 cm
Weight:
Area:
Materials
Reinforced concrete

Drawings include:

Voided Slab Concrete Beam plan (various sizes), elevation

Downloads

2D Downloads

3D Downloads

Concrete Beam - Box Girder
Comparison drawing of Concrete Box Girder compared to similar concrete beams

A box girder concrete beam is a type of beam that is made up of a hollow box section. The box section is typically made of concrete, but it can also be made of steel or a composite material. The box section is designed to provide strength and rigidity, and the extended wings help to distribute the load evenly across the beam. Box girder concrete beams are commonly used in bridges and other structures that require a high degree of strength and durability.

Concrete Box Girders are available a typical width of 12’ (3.66 m), depth of 29” (74 cm), and typical lengths between 40’-100’ (12.2-30.5 m).

Scaled set of drawings of Concrete Box Girder in front, side and top views
A box girder concrete beam is a type of beam that is made up of a hollow box section. The box section is typically made of concrete, but it can also be made of steel or a composite material. The box section is designed to provide strength and rigidity, and the extended wings help distribute load.

Concrete Box Girders are available a typical width of 12’ (3.66 m), depth of 29” (74 cm), and typical lengths between 40’-100’ (12.2-30.5 m).

Scaled set of drawings of Concrete Box Girder in front, side and top views
Concrete Beam - Box Girder
Height:
Width:
12’ | 3.66 m
Length:
40’-100’ | 12.2-30.5 m
Depth:
29” | 74 cm
Weight:
Area:
Materials
Reinforced concrete

Drawings include:

Concrete Box Girder plan (various sizes), elevation

Downloads

2D Downloads

3D Downloads

Concrete Beam - Rectangle, 2:3
Style and size comparison drawing of 2:3 Rectangle Concrete Beam compared to other concrete beam types

A rectangular 2:3 ratio concrete beam is a beam that has a width-to-depth ratio of 2:3. This ratio is commonly used for concrete beams because it provides a good balance of strength and stiffness. The wider width of the beam helps to distribute the load more evenly, while the deeper depth provides more resistance to bending. If you are looking for a strong, versatile, and affordable building material, then rectangular 2:3 ratio concrete beams may be a good option for you.

2:3 Rectangle Concrete Beams are available in a range of sizes with typical widths between 8”-36” (20.3–91.4 cm) and typical depths from 12”-54” (20.3–137 cm). The maximum width is commonly 48" (122 cm) and max depth of 72" (183). 2:3 Rectangle Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Set of scaled dimensioned drawings of 2:3 Rectangle Concrete Beam viewed from the front, plan, and side
A rectangular 2:3 ratio concrete beam is a beam that has a width-to-depth ratio of 2:3. This ratio is commonly used for concrete beams because it provides a good balance of strength and stiffness. The wider width of the beam helps to distribute the load more evenly.

2:3 Rectangle Concrete Beams are available in a range of sizes with typical widths between 8”-36” (20.3–91.4 cm) and typical depths from 12”-54” (20.3–137 cm). The maximum width is commonly 48" (122 cm) and max depth of 72" (183). 2:3 Rectangle Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Set of scaled dimensioned drawings of 2:3 Rectangle Concrete Beam viewed from the front, plan, and side
Concrete Beam - Rectangle, 2:3
Height:
Width:
8”-36” | 20.3–91.4 cm (Typical); 48” | 122 cm (Max)
Length:
40’-100’ | 12.2-30.5 m
Depth:
12”-54” | 20.3–137 cm (Typical); 72” | 183 cm (Max)
Weight:
Area:
Materials
Reinforced concrete

Drawings include:

2:3 Rectangle Concrete Beam plan (various sizes), elevation

Downloads

2D Downloads

3D Downloads

Concrete Beam - Rectangle, 1:2
Scale illustration of 1:2 Rectangle Concrete Beam compared to other concrete beam types

A rectangular 1:2 ratio concrete beam is a beam with a rectangular cross-section in which the width is twice the depth. This type of beam is commonly used in construction because it is strong and relatively easy to construct. The strength of a rectangular 1:2 ratio concrete beam comes from the fact that the concrete and steel reinforcement work together to resist bending. The concrete is strong in compression, while the steel reinforcement is strong in tension. When a load is applied to the beam, the concrete compresses and the steel reinforcement stretches.

1:2 Rectangle Concrete Beams are available in a range of sizes with typical widths between 8”-36” (20.3–91.4 cm) and typical depths from 16”-72” (40.6–183 cm). Maximum width is commonly 48” (122 cm) and maximum depth is 96” (244 cm). 1:2 Rectangle Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of 1:2 Rectangle Concrete Beam seen in elevation and plan
A rectangular 1:2 ratio concrete beam is a beam with a rectangular cross-section in which the width is twice the depth. This type of beam is commonly used in construction because it is strong and relatively easy to construct.

1:2 Rectangle Concrete Beams are available in a range of sizes with typical widths between 8”-36” (20.3–91.4 cm) and typical depths from 16”-72” (40.6–183 cm). Maximum width is commonly 48” (122 cm) and maximum depth is 96” (244 cm). 1:2 Rectangle Concrete Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of 1:2 Rectangle Concrete Beam seen in elevation and plan
Concrete Beam - Rectangle, 1:2
Height:
Width:
8”-36” | 20.3–91.4 cm (Typical); 48” | 122 cm (Max)
Length:
40’-100’ | 12.2-30.5 m
Depth:
16”-72” | 40.6–183 cm (Typical); 96” | 244 cm (Max)
Weight:
Area:
Materials
Reinforced concrete

Drawings include:

1:2 Rectangle Concrete Beam plan (various sizes), elevation

Downloads

2D Downloads

3D Downloads

Concrete Beam - Channel
Scale illustration of Concrete Channel Beam compared to other concrete beam types

A concrete channel beam is a precast concrete beam with a C-shaped cross section. It is typically used in bridges, parking garages, and other structures where a lightweight, economical, and easy-to-install beam is required. Channel beams are available in a variety of sizes and can be customized to meet specific needs. They are typically made of high-strength concrete and reinforced with steel bars to provide strength and durability. Channel beams are a versatile and cost-effective solution for a variety of structural applications.

Concrete Channel Beams are available in a range of sizes with widths of 48”, 60”, 72” (122, 152, 183 cm) and depths including 20”, 24”, 28”, 32”, 36” (51, 61, 71, 81, 91 cm). Concrete Channel Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of Concrete Channel Beam seen in elevation and plan
A concrete channel beam is a precast concrete beam with a C-shaped cross section. It is typically used in bridges, parking garages, and other structures where a lightweight, economical, and easy-to-install beam is required. Channel beams are available in a variety of sizes and can be customized.

Concrete Channel Beams are available in a range of sizes with widths of 48”, 60”, 72” (122, 152, 183 cm) and depths including 20”, 24”, 28”, 32”, 36” (51, 61, 71, 81, 91 cm). Concrete Channel Beams are available in typical lengths between 40’-100’ (12.2-30.5 m).

Group of dimensioned illustrations of Concrete Channel Beam seen in elevation and plan
Concrete Beam - Channel
Height:
Width:
48”, 60”, 72” | 122, 152, 183 cm
Length:
40’-100’ | 12.2-30.5 m
Depth:
20”, 24”, 28”, 32”, 36” | 51, 61, 71, 81, 91 cm
Weight:
Area:
Materials
Reinforced concrete

Drawings include:

Concrete Channel Beam plan (various sizes), elevation

Downloads

2D Downloads

3D Downloads