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Metal Buildings for Industrial, Commercial and Agricultural

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Metal Buildings Solution

Metal Buildings design from Havit Steel provides an optimized solution for your project. Our professional team is ready to serve any buildings. We can provide you with the most efficient design and construction plan, which is fast and smooth to complete construction for your steel building projects.

Metal Buildings
Steel Structure Building Industrial

Steel Structure Building

Compared with traditional buildings, steel structure building is a new building structure—the entire building made of steel. The structure mainly…

Steel Workshop Building Industrial

Steel Workshop Building

The steel structure workshop is a building used for industrial production. The industrial workshop includes production workshops, auxiliary production workshops,…

Steel Warehouse Building Industrial

Steel Warehouse Building

The steel structure warehouse building designed by Havit Steel provides customers with ideal storage and cargo management solutions. The prefab…

Prefab Metal Building Industrial

Prefab Metal Building

Prefab metal building is customized steel structures according to customers' architectural and structural requirements. All components are produced in the…

Steel Aircraft Hangar Building Commercial

Steel Aircraft Hangar Building

Havit Steel manufactures customized Steel Aircraft Hangar Building, which use to protect and maintain small and large aircraft. Our metal…

Steel Structure Frame Building Commercial

Steel Structure Frame Building

The Steel Structure Frame Building is composed of steel beams and steel columns. The steel frame can withstand the vertical…

Metal Structure Garage Kits Commercial

Metal Structure Garage Kits

The garage is an essential part of your property. Now almost every family has a car. The durable Metal Structure…

Steel Structure Livestock Buildings Agricultural

Steel Structure Livestock Buildings

Many farmers choose steel structures to build livestock buildings. Because steel structure livestock buildings with the advantage of low maintenance…

Metal Structure Warehouse Buildings Industrial

Metal Structure Warehouse Buildings

Metal Structure Warehouse Buildings can better meet the needs of cargo storage and logistics turnover because steel structure buildings have…

Steel Structure Workshop Industrial

Steel Structure Workshop

The steel structure workshop is a new type of building structure system. The kind of building structure system is a…

Steel Structure Warehouse Industrial

Steel Structure Warehouse

The main load-bearing component of a steel structure warehouse is a steel frame, including steel columns and roof beams. After…

Steel Manufacturing Building Industrial

Steel Manufacturing Building

The steel building design from Havit Steel is an effective solution for steel manufacturing buildings. Every manufacturing business requires a…

Metal Buildings Specification

The metal buildings uses steel to form a load-bearing structure. Generally, beams, columns, trusses, and other components made of section steel and steel plates constitute a load-bearing structure, which together with roof, wall, and floor, form a building.

Compared with traditional concrete buildings, metal structure buildings use steel plates or section steel instead of reinforced concrete, higher strength, and better seismic resistance. And because the components can be manufactured in factories and installed on-site, the construction period is greatly reduced. Due to the reusability of steel, it can greatly reduce construction waste and become more environmentally friendly. Therefore, it is widely used in industrial buildings and civil buildings all over the world.

1. Greatly save construction time. Construction is not affected by the season
2. Increase the use area of buildings, reduce construction waste and environmental pollution
3. Building materials can be reused, stimulating the development of other new building materials industries
4. Good seismic performance, easy to transform, flexible and convenient in use, bringing comfort and so on
5. High strength, lightweight, high safety and wealth of components, and lower building cost

1. Heat-resistant and non-fire-resistant, fire-resistant coatings are required
2. It is susceptible to corrosion, and the surface needs to be coated with anti-corrosion coatings to reduce or avoid corrosion and increase durability

Metal Building Kits

Steel Building Kits design from Havit Steel with advantage of Fast and Simple Construction, Wide Range Of Uses, Reasonable Cost, lower price than concrete building structure.

Metal Cladding System

Metal cladding system includes wall and roof cladding, skylight sheet, trim and flashing, gutter and downspout, insulation, which are essential components of metal building.

Steel Building Specs

Steel Building Specification provide the basic information about the Prefab Steel Building, which include Steel Warehouse, Industrial Workshop, Shed, and Garage Building.

We Are Here To Serve Any Type Of Metal Buildings

Please contact us. There’s a lot we can do for your steel building projects, small or large. Our team will provide you with the best quality construction solution


Steel Structure detail shows the specification of the portal frame structure, which most common use building structure for Warehouse, Workshop, Garage, and Aircraft Hangar.

The steel structure is a structure mainly made of steel, and it is one of the main types of building structures. The characteristics of steel are high strength, lightweight, excellent overall rigidity, and strong deformability. So it is especially suitable for large-span, super-high and super-heavy buildings. The steel structure is a steel beam, steel column, steel truss, and other components made of section steel and steel plate, and welds, bolts, or rivets connect each component or part.

Steel Structure Detail for Port Frame Structure:

The lightweight portal frame is a single-story steel building, which beams and columns rigidly connected. It has the advantages of simple structure, lightweight, and all the components manufactured in the factory, easy for assembling on site.
The portal frame steel structure widely used for Industrial, commercial, and agricultural buildings, such as steel warehouse, workshop building, Storage, Poultry building, and aircraft hangar.

The portal frame can divide into single-span (Figure a), double-span (Figure b), multi-span (Figure c) cantilever steel frame (Figure d) ) and steel frame with the adjacent frame (Figure e).
In the multi-span rigid frame, the connection between the column and the roof beam generally hinged, and the multi-span rigid frame single-slope roof (Figure f).
The multi-span rigid frame consisting of multiple double-slope roofs can also be used (Figure g). The beam-column cross-section can be equal or variable, and the base of columns hinged or rigid connected.

Length and Width of Steel Building :

Generally speaking, according to the principle that the long side is greater than the width, the amount of steel used in the rigid frame can be reduced, and the support between the columns can be reduced, thereby reducing the amount of metal used in the support system.
Example 1: The size of the building is 60x50m, 60m should use as the length and 50m as the width, that is: 60 (L) x50 (W), not 50 (L) x60 (W).

Column Distance

The most economical column distance under standard load is 7.5-9m. When it exceeds 9m, the steel consumption of roof purlin and wall girt will increase too much, and the overall cost is not economical. The standard load here refers to 0.3KN / m2 for live roof load and 0.5KN / m2 for essential wind pressure. When the loading is more significant, the economic column distance should reduce accordingly. As or workshop building with more than 10 tons crane, the financial column spacing should be 6-7m.

When arranging column spacing, if unequal column spacing is required, try to arrange the end span column spacing to be smaller than the center span. It is because the wind load at the end span is larger than the center span. Besides, when using continuous purlin design, The deflection of the end span and the mid-span bend are always more significant than other spans. Using smaller end spans can make roof purlin design more convenient and economical.
Example 1: Building length = 70m
Economical column distance is available: 1 @ 7 + 7 @ 8 + 1 @ 7 or 1 @ 8 + 6 @ 9 + 1 @ 8
Example 2: Building length = 130m, with a 10-ton crane
Economical column distance is preferable: 1 @ 5.5 + 17 @ 7 + 1 @ 5.5 or 20 @ 6.5

Determination of a reasonable span

Different production processes and use functions largely determine the span of the metal building. Some owners even require steel building manufacturers to determine a more economical span based on their useful features. A reasonable span should decide according to the height of the steel building. In general, when the column height and load are constant, the span is appropriately increased. The increase in steel consumption of the rigid frame is not apparent, but it saves space, the foundation cost is low, and the comprehensive benefits are considerable.

Through a large number of calculations, it finds that when the eaves height is 6m, the column distance is 7.5m, and the load conditions are entirely consistent, the steel consumption of the rigid frame (For Q345B steel) width between 18-30m is 10-15kg / m2. The amount of metal used for rigid frame units between 21-48m is 12-24kg / m2. When the eave height is 12m, and the width exceeds 48m, a multi-span rigid frame (sway column set in the middle) should use. The frame saves more than 40%, so when designing the rigid portal structure, you should choose a more economical span according to specific requirements, and you should not pursue a large span.

Steel Structure Detail-Roof slope

The roof slope decides according to comprehensive factors include the structure of the roof, the length of the drainage slope, and the height of the columns. Generally, it is 1/10 ~ 1/30. Studies have shown that different roof slopes have a significant impact on the amount of steel used in rigid steel frames. The following is the result of the calculation and analysis of the steel consumption under different roof slopes with a single span of 42m and an eave height of 6m.

When the roof slope is 0.5: 10, the weight of a frame is 3682 Kg when the roof slope is 1: 10, the amount of a frame structure is 3466 Kg When the roof slope is 1.5: 10, the weight of a frame is: 3328 Kg When the roof slope is 2: 10, the amount of a frame structure is: 3240 Kg.

So for a single-span rigid frame, a better way to reduce the weight of the rigid frame is to increase the roof slope. The larger the hill, the less steel used. However, the situation is different for a multi-span frame. A large slope will increase the amount of metal used in the frame. It is because a large hill will increase the length of the inner column.

When the span of the building is large, increasing the incline can reduce the deflection of the roof steel beam. Through research and calculation, the more economical slope is: multi-span buildings: 1:20 single span, span less than 45 m: 0.5: 10 single span, span less than 60m: 1.5: 10 single span, more than 60 m span : 2: 10
The roof slope is also related to whether the building has a parapet wall, and the large hill will lead to an increase in the cost of the parapet wall.

Steel Structure detail-Eave Height

The eave height has a significant impact on the cost, which mainly manifested in the following aspects:

  1. Increasing the height prefab steel building will cause the wall cladding to grow, the wall girt to grow, and the amount of steel used for columns will be more.
  2. If the steel column has no lateral bracing (such as the center column or the side column without a brace), the influence of the eave height on the frame weight will be more prominent; An increase in eave height will result in an increase in wind load on the frame. If the height/building width is> 0.8, to control the lateral displacement, sometimes it is even necessary to change the column foot from hinged to rigid.
    The following factors determine the height:
  3. The height requirements at the eave;
  4. When there is a mezzanine structure, the net height of the mezzanine and the height of the mezzanine beam;
  5. Height of crane beam and crane hook when the crane is available.

Temperature section
According to the code of steel structure building, the maximum length is not more than 300m, and the width is not more than 150m. The first temperature segmented expansion joint can set with a double-column arrangement (Figure 2a) or a single-column expansion joint with slotted holes connected to the purlin (Figure 2b).

Steel Structure Detail-Bracing

(A) the use of the Bracing
In the longitudinal structure of the portal frame, a complete bracing system should arrange to form a whole spatial structural system. The lateral stability of the lightweight portal frame in the width direction is ensured by the rigidity of the frame to resist the lateral load.

Due to the weak stiffness of the longitudinal structure in the length direction, it is necessary to set bracing in the longitudinal direction to ensure its longitudinal stability. The forces of bracing are mainly longitudinal wind load, crane braking force, earthquake action, and temperature action. When calculating the internal strength of brace, the joints are generally assumed to be hinged, and the effect of eccentricity ignores. The general support considered according to the tie bean. Therefore, a two-way arrangement is suitable.

(B) Common types of bracing
Figure 3-3 shows the general arrangement of roof bracing and the force transmission path of wind loads acting on the gable wall. Figure 3-4 shows the common support types between columns for portal frames. Due to building function and appearance requirements, or process equipment layout, when the above supports are not allowed to use, consider using a longitudinal structure. At this time, the bending stiffness of the weak axis of the column needs to use.

Stee Structure Detail-Basic principles of bracing settings

  1. The column bracing should be located on the same span as the roof bracing. When it cannot be installed due to the door opening on the wall, the column bracing can be set on the adjacent span;
  2. The distance between bracing should not exceed 5 spans; 30 ~ 45m should be taken when there is no crane, and the distance should not be greater than 60m when there is a crane;
  3. The roof bracing needs to divide into the ridge. (See Figure 3-3)

The following situations need to consider the installation of vertical-horizontal roof bracing

(1) When there is a removing column(In the column net, one or more columns are removed), such as a local removing column, only longitudinal bracing is required, as shown in Figure 3-5a;
(2) When the column distance is large, and the side column adopts the scheme of false wall frame column, see Figure 3-5b;
(3) The tonnage of the crane is greater than 15 tons.

When the building width is greater than 60m, it is appropriate to increase the column bracing. When cross bracing cannot be arranged, the bracing forms are shown in Figures 3-4b and 3-4c can be used. It is also possible to increase the section size of the roof bracing or the column bracing without increasing the internal inter-pillar support. At this time, the internal force calculation needs to be strictly performed to ensure the bracing is safe.

In the same column, different types of bracing should not be mixed, otherwise, the bracing with small stiffness will have less force and will not function as it should, and the bracing with high rigidity will be damaged due to overload work. The columnBracing should preferably choose to use cross braces.

In the following cases, the column bracing needs to be layered.

(1) When there is a high-low span (or with a large rain canopy), the upper and lower bracing between the columns need to be layered at the high-low span (or the large rain canopy) (see 3-6a);

(2) When the eave height is greater than 9m, double-layer column bracing can be set according to the included angle of the bracing. The angle between the cross-bracing and the horizontal plane is preferably 45 °, and it should not be greater than 55 °. The upper and lower bracing are set between the columns. The end-opening room may not be provided with a lower bracing to reduce the temperature stress of the crane beam (see 3-6b).

Round steel, angle steel, or round (square) pipe can be used for Column Cross Bracing.

When the internal force of column bracing is large or the lifting tonnage of the crane is more than 5 tons, round steel support is not suitable. At this time, it should use angle steel Or round (square) pipe as column bracing.

Steel Structure detail – use and setting of the flange bracing

The function of the flange bracing is mainly to prevent the instability of the lower flange of the beam and the inner flange of the column. The brace is connected to the lower flange of the beam on one side and the purlin on the other. Refer to Figure 3-7 for the practice of bracing.

The Characteristics of Steel Structure:

1. The steel is toughness, good plasticity, uniform material.

Steel is high structural reliability, suitable for bearing impact and dynamic loads, and excellent seismic performance.

The internal structure of the steel is uniform, close to an isotropic homogeneous body. The actual working performance of the steel structure is more in line with the calculation theory. Therefore, the steel structure has high reliability. Compared with concrete and wood, the ratio of density to yield strength is relatively low. Thus, under the same stress conditions, the steel structure has a small section, lightweight, convenient transportation, and installation, and is suitable for large spans, high heights.

2. The steel structure is heat-resistant and not fire-resistant.

When the temperature is below 150°C, the properties of the steel change little. Therefore, the steel structure is suitable for hot workshops, but when the surface of the structure is exposed to the heat of about 150°C, it should protect by heat insulation panels.

When the temperature is between 300℃ and 400℃, the strength and elastic modulus of the steel will decrease significantly, and the strength of the steel will tend to zero when the temperature is around 600℃. In buildings with special fire protection requirements, the steel structure must be protected by refractory materials to improve the fire resistance level.

3. The steel structure has weak corrosion resistance.

Especially in the environment of the humid and corrosive medium, it is easy to rust. Generally, steel structures must be de-rusted, galvanized, or painted, and regularly maintained. For offshore platform structures in seawater, special measures such as “zinc block anode protection” are required to prevent corrosion.

4. The high degree of mechanization of steel structure manufacturing and installation.

Steel structural components are natural to manufacture in factories and assembled on site. The factory mechanized manufacturing of steel structural components has high precision, high production efficiency, fast site assembly, and a short construction period. The steel structure is the most industrialized.

5. High strength and seismic resistance

Compared with ordinary reinforced concrete structures, steel structures are superior in inhomogeneity, high strength, fast construction, good seismic resistance, and high recycling rate. Steel has many times higher strength and modulus of elasticity than masonry and concrete, so the mass of steel members is light under the same load conditions. From the aspect of being destroyed, the steel structure is a flexible damage structure with large deformation foreshadowed in advance, which can detect the danger in advance and thus avoid it.

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