In modern cities, three-story steel frame office buildings are important venues for business activities, and their design and planning directly affect the corporate image and employee productivity. Among the many design elements of office buildings, key parameters, such as space layout, span, and depth, are crucial for creating a comfortable and efficient office environment. Minghua Steel Structure will describe in detail the room span, depth, and other related parameters of three-story steel frame office buildings and elaborate on the design of the parallel double running staircase.
Technical Parameters
|
Product Name |
Three-Storey Steel Frame Office Building |
| Type | Frame Structure |
|
Member |
Steel Column&Beam |
|
Steel Type |
Q235B |
| Room Span | 3.9m 3.6m 4.2m |
| Room Depth | 4.8m-6.0m |
|
Wall& Roof Panels |
PU/Glass Wool/Rock Wool Sandwich Panels |
|
Window |
Sliding or Roller Window |
|
Specification |
Customized |
|
Transport Package |
Standard Sea Freight |
|
HS Code |
730890000 |
|
Origin |
Hebei, China |


Room spans and depths in three-storey steel frame office building
1. Span: In three-storey steel frame office buildings, the room spans are 3.6, 3.9, and 4.2 meters, respectively. These varying span sizes allow companies the flexibility to accommodate different office needs. For example, large meeting rooms provide more space for teamwork, while individual offices offer a quiet environment for research and reflection.
2. Depth: These three-storey steel frame office buildings are designed with a modulus of 300 mm, with individual room depths ranging from 4.8 meters to 6.0 meters. This flexibility allows the building's internal space to meet actual functional requirements while ensuring good lighting and ventilation, creating a comfortable and pleasant office environment for employees.
Staircase design in three-storey steel frame office building
The steel-framed office building is designed with parallel double-running staircases. The specific parameters are as follows:
1. Staircase dimensions: The width of the staircase is 1.3 meters, with a total of 20 steps. Each step has a height of 15 centimeters and a tread width of 25 centimeters. This design ensures safety and provides a more comfortable experience when using the stairs.
2. Resting platform: A 1 x 2.7 meter resting platform is located between every two floors. This allows employees to take a break and reduces leg fatigue when using the stairs.
3. Depth of stairs: The depth of the stairs in the three-storey steel frame office building is 3.5 meters. This size ensures optimal space utilization and prevents the corners of the stairs from being too narrow.
4. Stairwell thickness: Stairwell thicknesses for three-storey steel frame office buildings range from 100 mm to 200 mm. This equal-run design ensures that the number of steps between the first and second runs is equal, totaling 10 runs. The width of the tread surface is between 260 mm and 280 mm, the width of the resting platform is 1200 mm to 1300 mm, and the height of the tread is 150 mm.
Steel Structure Production Process

Application
Minghua Steel Structure details the parameters of room spans, depths, and staircase design for a three-storey steel frame office building. These thoughtfully designed layouts and facilities enable the building to meet corporate office needs while creating a comfortable and efficient environment.

FAQ
Q1: You are a manufacturing factory or a trading company?
A: We are the direct manufacturer of steel structure buildings. we have rich experience in steel structure designing, manufacturing, processing, and installation.
Q2: Do you accept container loading inspections?
A: You are welcome to send an inspector, not only for the container loading but any time during the production time.
Q3: What is the delivery time?
A: It depends on order quantities. Generally speaking, the delivery time will be within 30 to 45 working days.
Q4: How long is the service life of the product?
A: Over 50 years.
Q5: How to pack the products?
A: We use a standard package. If you have special package requirements, we will pack as required, but the fees will be paid by customers.


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