In the field of outdoor advertising, LED display screens have the characteristics of high brightness, high definition and strong visual impact. They have become an important medium for various commercial publicity and information dissemination. According to different installation environments, outdoor LED display screens installation methods are mainly divided into floor support , column , roof and inlay type.
Among them, column type installation is widely used in squares, gymnasiums and other open areas because of its wide field of vision and strong adaptability. SightLED will discuss in detail the calculation methods of foundation constructions:
- Earth excavation
- Cushion layer
- C30 concrete foundation
- Backfill earthwork, etc.,
We hope it can provide guidance for relevant construction personnel.
Outdoor column LED display screen installation overview
Column installation is mainly suitable for large outdoor LED display screens, including single-column and double-column installation. The column installation method is not only stable and reliable, but also can effectively prevent the screen from being disturbed by external factors, so as to make the display effect more stable and lasting.
However, in addition to the need to make the steel structure of the LED screen body, the column installation also needs to design and construct the concrete or steel column foundation according to the geological conditions. The quality of foundation construction is directly related to the safety and stability of the entire display system. Therefore, before construction, we must know calculations detailed and designs.
Earthwork excavation calculation
Earthwork excavation is the primary link in the foundation construction of column outdoor LED display screens. Its main purpose is to provide working space for subsequent cushioning, foundation pouring and other processes. We need to consider factors such as screen size, foundation burial depth, and slope gradient.
Relationship between screen area and foundation size
According to the size of the LED display screen, we can preliminarily determine the length and width of the foundation. Generally speaking, the foundation size should be slightly larger than the screen size. At the same time, we also need to consider the burial depth of the foundation to meet the requirements of wind resistance and earthquake resistance.
Calculation of earthwork excavation volume
The calculation formula for earthwork excavation volume is: V=L×W×H
Where L is the foundation length, W is the foundation width, and H is the foundation burial depth.
In actual construction, we also need to consider the influence of slope gradient on excavation volume. The slope gradient is generally determined based on factors such as soil type and excavation depth.
Calculation of cushion layer
The cushion layer is set below the foundation, and its main functions include:
- Waterproof
- Drainage
- Antifreeze
Thereby, improving the working conditions of the base and soil foundation. The cushion layer is generally made of permeable materials such as crushed stone and gravel.
Determination of cushion layer thickness
The thickness of the cushion layer should be determined according to factors such as foundation size, soil type, and groundwater level.
Generally speaking, the thickness of the cushion layer should not be too thin to ensure the waterproof and drainage effects. At the same time, it should not be too thick to avoid increasing construction costs and construction period.
Calculation of cushion layer volume
The calculation formula for cushion layer volume is: V=L×W×d
Where L is the foundation length, W is the foundation width, and d is the cushion layer thickness.
In actual construction, we also need to consider the impact of the compaction coefficient of the cushion material on the volume.
Calculation of C30 concrete foundation
The C30 concrete foundation is the main load-bearing structure of the column outdoor LED screen. Its design must meet the requirements of strength, stiffness, stability, etc.
Determination of foundation size
The size of the C30 concrete foundation should be determined according to factors such as the screen size, foundation burial depth, and soil bearing capacity.
The length and width of the foundation should be slightly larger than the size of the screen. The height of the foundation should be determined according to the soil bearing capacity, wind resistance, earthquake resistance and other requirements.
Calculation of foundation volume
The calculation formula for the volume of C30 concrete foundation is: V=L×W×H
Where L is the foundation length, W is the foundation width, and H is the foundation height.
In actual construction, we also need to consider the impact of factors such as the pouring method and vibration method of concrete on the foundation volume.
Calculation of backfill earthwork
Backfill earthwork is the last link in the foundation construction of outdoor column-type LED video display screen. The purpose of backfilling is to restore the original state of the ground and ensure the cleanliness and safety of the construction site.
Determination of backfill earthwork
The amount of backfill earthwork should be determined based on factors such as earthwork excavation volume, cushion volume, and foundation volume. Backfill soil should use soil materials that meet the requirements to ensure ground quality and stability.
Calculation of backfill earthwork volume
The calculation formula for backfill earthwork volume is: V=V1-V2-V3;
Where V1 is the earthwork excavation volume, V2 is the cushion volume, and V3 is the foundation volume.
In actual construction, we also need to consider the impact of the compaction coefficient of backfill soil on the backfill volume.
Specific calculation example
In order to more intuitively demonstrate the calculation process of the foundation construction of column-type outdoor LED display screen. We will give three specific calculation examples of different screen areas.
Example 1: Screen area ≤ 10m²
Earth excavation
V Earth excavation = 1.2m × 1.2m × 1m × 2 = 2.88m³ (considering double-sided excavation)
Cushion
V Cushion = 1.2m × 1.2m × 0.1m × 2 = 0.29m³ (considering double-sided cushion)
C30 concrete foundation
VC30 concrete foundation = 1m × 1m × 0.9m × 2 = 1.8m³ (considering double-sided foundation)
Backfill
V Backfill = V Earth excavation – V Cushion – VC30 concrete foundation = 2.88m³ – 0.29m³ – 1.8m³ = 0.79m³
Formwork
S Formwork = 1m × 4m × 1 = 4m² (considering the formwork around the foundation)
Rebar cage
m10# Rebar cage = 70.78Kg (calculated according to the foundation reinforcement diagram)
Angle steel
m 3# angle steel = 9.29Kg (calculated according to the design of the foundation steel structure)
Bolts
L bolts = 8 (determined according to the connection requirements of the foundation steel structure)
Example 2: 10m²＜screen area≤20m²
Earth excavation
V Earth excavation = 1.5m×1.5m×1.2m×2=5.4m³ (considering double-sided excavation)
Pad
V Pad = 1.5m×1.5m×0.1m×2=0.45m³ (considering double-sided pad)
C30 concrete foundation
VC30 concrete foundation = 1.3m×1.3m×1.1m×2=3.72m³ (considering double-sided foundation)
Backfill
V Backfill = V Earth excavation-V Pad-VC30 concrete foundation = 5.4m³-0.45m³-3.72m³=1.23m³
Template
S formwork = 1.3m×4m×1.1=5.72m² (considering the formwork around the foundation and the heightened part)
Rebar cage
m12#rebar cage=151.45Kg (calculated according to the foundation reinforcement diagram)
Angle steel
m4#angle steel=19.05Kg (calculated according to the foundation steel structure design)
Bolt
L bolt=10 (determined according to the foundation steel structure connection requirements)
Example 3: 20m²＜screen area≤30m²
Earth excavation
V earth excavation=1.8m×1.8m×1.5m×2=9.72m³ (considering double-sided excavation)
Pad
V pad=1.8m×1.8m×0.1m×2=0.65m³ (considering double-sided pad)
C30 concrete foundation
VC30 concrete foundation=1.6m×1.6m× 1.4m×2=7.17m³ (considering the bilateral foundation)
Backfill
Vbackfill=Vearth excavation-V cushion-VC30 concrete foundation=9.72m³-0.65m³-7.17m³=1.9m³
Template
S template=1.6m×4m×1.4=8.96m² (considering the template around the foundation and the heightened part)
Rebar cage
m14#rebar cage=341.84Kg (calculated according to the foundation reinforcement diagram)
Angle steel
m5#angle steel=35.72Kg (calculated according to the foundation steel structure design)
Bolt
L bolt=12 (determined according to the connection requirements of the foundation steel structure)
Related:
How Much Does Outdoor LED Display Cost Per Square Meter?
Conclusion
The calculation of the foundation construction of the column-type outdoor LED display involves multiple links such as earth excavation, cushion, C30 concrete foundation, backfill, etc.
The calculation of each link needs to consider multiple factors such as screen size, foundation size, soil conditions, material properties, etc.
Through the detailed explanation and specific calculation examples in this article, we hope to provide useful reference and guidance for relevant construction personnel.
At the same time, we also hope that construction personnel can flexibly adjust the calculation method according to the specific situation in actual construction to meet the actual needs of different projects.
If you need this kind of outdoor LED screen, please contact us for a better solution.
