How much is the steel structure per square meter? Is a steel or concrete structure more appropriate?

In this paper, several questions about steel structure are answered.

1. How much is a square meter of steel structure?

2. What is the price composition of steel structure?

3. How much steel is used per square meter of all kinds of buildings?

4. Is the main structure of all kinds of buildings suitable for steel structure or concrete structure? 

1. How much is a square meter of steel structure?

This is one of the most searched keywords on Baidu, with four of the top 20 searches for "steel structure" for queries about the price of steel structures.

How much is the steel structure per square meter?

How much is steel structure per square meter?

How much is the steel structure flat?

How much is a steel structure house?

In the field of construction engineering, more people are engaged in concrete structures than in steel structures. Especially in third - and fourth-tier cities, new housing is still mainly concrete structure, steel structure is still a few.

Many people are familiar with the cost of concrete houses, hope to understand how much steel structure per square meter?

First of all, need to clarify a point, steel structure industry people, almost no "steel structure a square how much money? "To ask about the cost of steel structures. People in the industry generally ask: how much is a ton of steel structure? In the link of engineering construction, the unit of valuation of steel structure is weight tonnage.

2. What is the price composition of steel structure?

Understand the engineering industry, the price of steel structure is generally according to the tonnage as the valuation unit, let's talk about the composition of steel structure engineering price.

The price of steel structure generally includes:

(1) material prices, mainly steel prices. The most commonly used Q235B or Q355B steel price is generally 3000~6000 yuan a ton, according to the market price fluctuations.

For example, the unit price of 8mm medium plate in the last 15 years reached a historical high price of 7316 yuan per ton in the middle of 2008, and a historical low price of 1,936 yuan per ton in early 2016. In the past two years, the plate price fluctuated in 3000~6000 yuan a ton.

Many websites can query the steel information price, for example, in the "Steel Structure Design" wechat public account home page has "steel price today" menu, convenient to query the price of all kinds of steel.

The price of the query is not including the seller profit, tax, freight price is not included. These additional costs are relatively fixed, and the proportion is small, for most people want to know the approximate steel price, has been very accurate.

(2) the factory's steel component processing fee, the factory processing fee is generally 1000~3000 yuan a ton, according to the project scale, processing difficulty, component type, whether arc bending, whether assembled, corrosion and rust removal requirements and other factors.

Mainly include the factory to the material cutting material, drilling, assembly, welding, calibration, sandblasting, grinding, coating, bending arc (arc component), assembly (special-shaped assembly component), component transportation, manufacturer's profits, taxes and other costs.

(3) The installation cost of the construction site, the installation cost of the construction unit is generally 1000~3000 yuan per ton, according to the project scale, installation difficulty, construction measures, etc.

Mainly including the site of the crane use fee, support support measures, safety and civilized construction costs, construction auxiliary materials, intermediate paint and finish paint anticorrosion, fire retardant paint, construction unit profits, taxes and other components.

These parts add up, the comprehensive unit price of conventional steel structure engineering is generally 7000~14000 yuan a ton.

3. How much steel is used per square meter of all kinds of buildings?

Understand the unit price per ton of steel structure, for the owner, the concern is the price per square meter of the main structure of steel structure house. This needs to know the amount of steel per square meter of the building's main structure. Cost of steel structure per square meter (yuan/square meter) = steel quantity per square meter (kg/square meter) x comprehensive unit price of steel structure (yuan/kg).

The amount of steel used per square meter of steel structure building is related to the use function, structural layout, architectural modeling, external load that the building needs to bear and the geographical environment.

For example, the Amount of steel used per square meter in Beijing's Bird's Nest is much higher than that used in other common sports venues, which greatly increases the amount of steel used per unit area in order to meet the special architectural shape.

Under normal circumstances, the main structure of single-storey workshop with steel 25~100 kg/square meter (according to the building area calculation), according to the height of the workshop, span, structure layout, vehicle tonnage, wall roof material type, external hanging weight, local wind and snow earthquake natural environment and other factors are different.

The steel capacity of the main structure of multi-storey workshop (building) is 35~150 kg/square meter (according to the building area). In addition to the same influencing factors as single-storey workshop, the operating weight of the equipment on each floor and other live loads are also important influencing factors.

Large span space building, different shapes of buildings used steel quantity difference is relatively large, there is no obvious law.

For example: in recent years, the development of fast large span coal shed steel structure, large span, roof load is small, the main structure of steel 40~80 kg/square meter (calculated by surface area), the influence factors are similar to single-storey workshop.

4. Is the main structure of all kinds of buildings suitable for steel structure or concrete structure? 

In general, which kind of structure type is used in all kinds of buildings, mainly according to the type of building, a variety of structure types can be selected.

(1) Steel structure is mainly used in industrial workshops, long-span stadiums, super high-rise buildings, high-rise structures and special-shaped space buildings.

Concrete structures are difficult to achieve these special architectural forms and functions, or to achieve the same form, concrete structures are built much higher.

In these types of buildings, steel structure can play its advantages of fast construction speed and high material strength, and it is easier to achieve larger height, span and complex shape.

(2) In the multi-high-rise residential area, concrete structure has more price advantage.

Concrete structure fire resistance, corrosion resistance, durability, maintenance-free performance has more advantages, in the residential area or concrete structure.

In recent years, the local began to promote prefabricated steel structure housing, more is the factor of policy level.

(3) For commercial, office and other public buildings, steel structure and concrete structure have their own advantages. In the future, more and more steel structure buildings will be used.

With the increasing proportion of labor cost in the construction cost (in the last two decades, the price of main building materials and construction machinery has not changed much, but the labor price has increased several times), the advantages of fast construction speed and low labor consumption of steel structure have gradually come into play.

At present, in the first and second tier cities, more and more commercial, office and other public buildings, using steel structure as the main structure. 

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