Steel building structural arrangement

Abstract

The invention discloses a steel building structural arrangement, which is constructed exclusively by means of cold formed sections bolted together to form a building structure. The cold formed sections are made from carbon steel coil and consist of various structural grades available of carbon steel coil in order to adapt the input material to suite construction purpose. The arrangement can also be constructed by means of a combination of hot rolled steel and cold formed sections bolted together to form a building structure.

Description

[0001] i

[0002] STEEL BUILDING STRUCTURAL ARRANGEMENT

[0003] FIELD OF INVENTION

[0004] The present invention relates to steel building structure arrangement.

[0005] More particularly, the present invention relates to steel building structural arrangement for the building industry in particular steel building structures and a construction method therefore.

[0006] BACKGROUND TO INVENTION

[0007] A steel building is a metal structure incorporating steel for supporting the roof and the exterior cladding and for internal support. Such buildings are used for a variety of purposes including storage, office space and living space and have evolved into specific types depending on the purpose of the building structure.

[0008] Steel building structures first gained popularity in the early 20th century. Their use became more widespread during World War II and significantly expanded after the war when steel became more available. In the last few decades steel buildings have become more common as their capabilities have expanded with improved designs due to the availability of computer aided design programs.

[0009] The advantages of steel building structures are as follows:

[0010] (a) High quality, aesthetic

[0011] (b) Limited maintenance costs (c) Non combustible

[0012] (d) Environmentally friendly

[0013] (e) Components can be re-used

[0014] (f) Components are functional

[0015] (g) Strong, durable and stable

[0016] (h) Enables superior design and safety

[0017] (i) Sustainable to temperature effects

[0018] (j) Rigid and dimensionally stable

[0019] (k) Construction is fast compared to other materials

[0020] (l) Resistant to termites and other destructive insects

[0021] (m) Cheaper than any other construction methods

[0022] (n) Offers fast construction

[0023] The disadvantages of steel building structures are as follows:

[0024] (a) Heat conductivity

[0025] (b) Corrosion

[0026] Some common types of steel buildings are "straight-walled", "arch" and "clearspan". Straight walled and the arch type refer to the outside shape of the building. Steel arch buildings are the most cost effective and structurally sound and they are commonly used in the agricultural industry. Straight-walled buildings provide more usable space when compared to arch buildings. They are also easier to blend into existing architecture. Straight-walled buildings are commonly used for office space. Clearspan classification refers to the internal construction. Clearspan steel buildings utilize stronger overhead support beams, thus reducing the need for supporting internal columns. Clearspan steel buildings can be used to store large commercial aircraft or used as public arenas.

[0027] The modern steel building is composed of many individual segments that have evolved over time. With the recent benefit of Computer Aided Design (CAD) steel buildings have become much safer. The maximum wind load and snow load in particular have increased with the more accurate lipped channels calculations provided by CAD. These advances have also led to a more efficient manufacturing process as most steel buildings are prefabricated. The smaller prefabricated steel buildings are simple enough to be constructed by anyone. The larger steel buildings require professional construction workers to ensure proper assembly.

[0028] Traditionally steel buildings in various shapes and forms, are fabricated using hot rolled steel. Cut welded and eventually bolted together. This system has been largely unchanged since the invention of welding for the past 100 years. The material used is almost always a form of carbon steel and the corrosion protection is done by either hot dipped galvanising or a coating system of some sort. It is an object of the invention to suggest novel steel building structural arrangement and a construction method, therefore.

[0029] SUMMARY OF INVENTION

[0030] According to the invention, a steel building structural arrangement constructed exclusively by means of cold formed sections bolted together to form a building structure.

[0031] The cold formed sections may be made from carbon steel coil.

[0032] The cold formed sections may consist of various structural grades available of carbon steel coil in order to adapt the input material to suite construction purpose.

[0033] The cold carbon steel coil may be pre-coated before roll forming.

[0034] The arrangement may reduce production costs and waste due to minimal welding involved.

[0035] The arrangement may improve production speed.

[0036] The arrangement may allow the structural components to be “flat packed” and thus result in saving on transport costs.

[0037] In high corrosive environments, the building structure may be manufactured from a material that specifically suites the needs.

[0038] The building structure may be located on a pig farm where an excessive build-up of ammonia occurs and which is extremely corrosive on galvanised steel and painted steel, and thus the cold formed sections are made from 3CR12.

[0039] The arrangement may be made entirely of stainless steel.

[0040] Varied materials may be used depending on the needs for as long as the materials are available in coil form and can be roll formed.

[0041] Also, according to the invention, a steel building structural arrangement, which is constructed by means of a combination of hot rolled steel and cold formed sections bolted together to form a building structure.

[0042] Also, according to the invention, a method of constructing a steel building structure, which includes the steps

[0043] (a) of roll-forming steel coil to obtain cold formed section; and

[0044] (b) of bolting these cold formed sections together to form a building frame.

[0045] The method may include the step of bolting together the cold formed sections by means of couplings and / or brackets and / or cleats.

[0046] The method may include the step of covering the building frame with roofing means.

[0047] The method may exclude welding.

[0048] The method may include the step of prefabricating the couplings and / or brackets and / or cleats. DETAILED DESCRIPTION OF INVENTION

[0049] The invention will now be described byway of example.

[0050] The invention is made possible with the evolvement of roll forming equipment capabilities and more important, the different type of materials available that can be roll formed.

[0051] Hence materials that are not available in hot rolled form (“I” beam) can be used in high corrosive environments which previously could only be done by costly coating systems.

[0052] The invention includes using a combination of hot rolled steel and cold formed sections to bolt together and form a building in a unique hybrid way that has never been done.

[0053] Also, according to the invention, using only cold formed sections to bolt together to form a building in a unique hybrid way that has never been done.

[0054] Structural grades available of carbon steel coil has significantly more options than hot rolled sections. Thus, adapting the input material to suite the purpose.

[0055] Coil can be pre coated before roll forming, which is not possible with hot rolled steel and hence much more cost effective.

[0056] The process significantly reduces production costs and waste due to the minimal welding involved.

[0057] The invention vastly improves production speed. The design of the invention allows the material toe to be “flat packed”, and hence saving on transport costs.

[0058] For high corrosive environments, the complete structure can now be manufactured out of a material that specifically suites the needs.

[0059] For example: on pig farms there is an excessive build-up of ammonia which is extremely corrosive on galvanised steel and painted steel currently used in the buildings. 3CR12 is a very cost-effective grade of stainless steel which proves to be very corrosive resistant against ammonia. It is not available in I or H beams. But it is available in coil form. With this patent the “shed” can now be made 100% out of stainless steel.

[0060] Similarly different materials can be used depending on the needs. As long as it is available in coil form and can be roll formed.

[0061] The steel building structure includes cold rolled sections bolted together by means of couplings and / or brackets and / or cleats to form a building frame adapted to support roofing means.

[0062] The couplings and / or brackets and / or cleats are prefabricated.

[0063] The steel building structure is adapted for agricultural and / or storage means.

[0064] The steel building structure is adapted to be assembled by riggers and / or sub-contractors.

[0065] The steel building structure includes custom made couplings. The steel building structure is adapted not to include any welding.

[0066] The method is adapted not to include a step of welding.

[0067] The steel building structure includes cold rolled steel members.

[0068] The steel building structure includes back-to-back lipped channels for columns and a single lipped channels for the roof truss.

[0069] The cold formed lipped channels are galvanised.

[0070] The cold formed lipped channels are cold rolled.

[0071] The structural components of the steel building structure are provided in a kit form.

[0072] The structural components of the steel building structure are identified by numbers and letters.

[0073] The structural components include nuts and bolts.

[0074] The steel building structure is adapted to be covered by cladding.

[0075] The cladding consists of metal and / or insulation material.

[0076] The invention extends to a method of constructing a steel building construction, includes the steps

[0077] (a) of providing structural components which include more cold formed sections; (b) of bolting the cold formed sections together by means of couplings and / or brackets and / or cleats to form a building frame; and

[0078] (c) of covering the building frame with roofing means.

Claims

iPATENT CLAIMS1. A steel building structural arrangement, which is constructed exclusively by means of cold formed sections bolted together to form a building structure.

2. A steel building structural arrangement as claimed in claim 1 , in which the cold formed sections are made from carbon steel coil.

3. An arrangement as claimed in claim 1 or claim 2, in which the cold formed sections consist of various structural grades available of carbon steel coil in order to adapt the input material to suite construction purpose.

4. An arrangement as claimed in claim 2 or claim 3, in which the cold carbon steel coil is pre-coated before roll forming.

5. An arrangement as claimed in any one of the preceding claims, which reduces production costs and waste due to minimal welding involved.

6. An arrangement as claimed in any one of the preceding claims, which improves production speed.

7. An arrangement as claimed in any one of the preceding claims, which allows the structural components to be “flat packed” and thus result in saving on transport costs.

8. An arrangement as claimed in any one of the preceding claims, which in high corrosive environments, the building structure is manufactured from a material that specifically suites the needs.

9. An arrangement as claimed in claim 8, in which the building structure is located on a pig farm where an excessive build-up of ammonia occurs and which is extremely corrosive on galvanised steel and painted steel, and thus the cold formed sections are made from 3CR12.

10. An arrangement as claimed in any one of the preceding claims, which is made entirely of stainless steel.

11. An arrangement as claimed in any one of the preceding claims, in which different materials are used depending on the needs for as long as the materials are available in coil form and can be roll formed.

12. An arrangement as claimed in any one of the preceding claims, which is constructed by means of a combination of hot rolled steel and cold formed sections bolted together to form a building structure.

13. A method of constructing a steel building structure, which includes the steps(a) of roll-forming steel coil to obtain cold formed section; and(b) of bolting these cold formed sections together to form a building frame.

14. A method as claimed in claim 13, which includes the step of bolting together the cold formed sections by means of couplings and / or brackets and / or cleats.

15. A method as claimed in claim 13 or claim 14, which includes the step of covering the building frame with roofing means.

16. A method as claimed in any one of claims 13 to 15, which does not include a welding step.

17. A method as claimed in any one of claims 14 to 16, which includes the step of prefabricating the couplings and / or brackets and / or cleats.

18. A steel building structure substantially as hereinbefore described.

19. A method of constructing a steel building structure substantially as hereinbefore described.

20. Steel building structural components for constructing a steel building structure substantially as hereinbefore described.