WA’s Leading Farm Shed Builder

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As the leading steel farm shed builders in WA, AUSPAN offers the best, customised farm sheds available.

Purpose-built farm sheds also assist you to run your daily operations in the most cost-effective and efficient manner meaning your enterprise is able to continue working even when outside weather conditions aren’t favorable. Partnering with the right shed building company that fully understands your specific requirements is the single most important thing you need to consider when looking to invest in a new steel farm shed building.

Having worked with Western Australia’s farmers for many years in building tough and strong sheds that can withstand harsh WA’s climate challenges, AUSPAN has established itself as the leading steel farm sheds builder of the region.


Structural engineering is accountable for understanding, evaluating, and calculating the strength, stability, and rigidity of structures in order to make them impregnable. Designers and engineers prefer to sort every problem out before a structure is built because engineering failures can be disastrous. Therefore, all construction projects should incorporate principles of structural engineering in order for the structure to keep performing for as long as it is intended, bearing its own and operational load and withstanding external conditions that will be placed onto it.

Correct engineering is crucial for the long term performance of your steel farm shed because it directly impacts its safety and durability. A thorough analysis of the principles of structural engineering beforehand plays a vital role in making sure that your structure is up to all necessary building and design codes. It also identifies important functional abilities of the structure such as the load it can bear and the wind velocity it can withstand.

Different technical aspects can arise while planning to build your shed and might get you confused. For eg: choosing between an I-Beam or Sectional Tube column design or I-Beam and Web truss portals can be confusing if you aren’t familiar with how farm sheds are built. A good building partner will ensure you are educated on these details and help you get the best value from your shed investment.


Before building a farm shed structure, the environment and location where it is to be installed along with the possible conditions in which it could be subjected to must be carefully considered. Soil types for secure footings must be analysed to ensure adequate concrete is used, site wind conditions must be considered for the shed’s wind load ratings, and proximity to coastlines must be determined to ensure the correct materials are used for corrosion protection (ocean spray) and rated fixings (cyclonic areas). These are just some of the elements that need to be looked at to ensure the design of your shed structure is correct. A shed built with premium quality materials alone won’t be enough to ensure it is safe and will last for years to come. An ingenious farm shed design will ensure your investment is solid, stable and operational for many years to come. A steel shed building that incorporates full structural engineering in its design is the only way to avoid the risk of the building collapsing under its own weight or under environmental challenges it is placed under.

Parts of Western Australia’s coastal regions often face severe cyclonic activity, and high wind speeds can occur throughout much of the country. An expert design with the correct material and engineering is the only answer to keep your farm shed performing safely and as it would be expected to do, for a long time.

Pre-Engineered Or Engineer Certified? 

Basically, pre-engineered building refers to the one that has been designed based on the general information and assumption (in some cases) without any specific knowledge about the particular project. Such structures, although being time effective in cheaper upfront, may not exactly satisfy every single aspect of your project. Even small mistakes could lead to costly repairs and modifications later, not to mention the compromised safety aspect that could occur.

It is strongly recommended that you opt for a structural design that is planned specifically for your farm shed project and is approved by a certified engineer. A certified engineer considers the exact location where your shed will be installed, calculates and plans according to the applicable wind region and the project’s terrain.


While doors play an important role in effectively accessing your shed, their design and technical aspects are often overlooked. The wrong choice of door type or size is often made which ends up with the owner regretting it quickly.

Sliding doors are considered to be cost-effective and highly advantageous over vertical roller doors in most steel farm shed projects because of the minimal space they use, less time-consuming installation, and cost-efficiency. Sliding doors also do not require overhead space during their function.

Gutters And Downpipes

While building your farm shed, considering stormwater management is also an important factor. Tapered gutters can help you with improved stormwater management by giving the ability to direct all rainwater runoff to one end of your farm shed for better erosion control where runoff is easier to direct away from the building or where you have water storage tanks located. Most farm sheds today have large roof catchment surface areas and the amount of water that can be harvested can be truly surprising which in turn can then be used for on-farm activities such as livestock watering or ag spraying for weed control and fertiliser application.


Proper ventilation in your farm sheds can make a big difference to the working conditions and health of your employees and livestock Condensation in your shed during the winter can lead to dampness, mould build-up, and low energy efficiency. While heat caused by direct sunlight on your shed roof all day can cause unbearable working conditions and destruction of sensitive stock you may have on hand such as spray chemicals etc.

A shed that is used for livestock production such as feedlots, piggeries, poultry growing needs to be facilitated with good airflow to avoid certain health issues in housed animals like pneumonia, nasal discharge etc. As most harmful viruses and bacteria are airborne, ensuring good airflow in the sheds will help move them away from animals along with other harmful gases.

Thickness And Quality Of Steel 

Premium quality steel materials are definitely a critical component of building a good quality shed while there is a balance to find to prevent over-specification which just adds unnecessary expense. So make sure you are getting quality steel materials (for both the structure and the cladding) to suit your shed’s location (coastal or inland) and operational requirements. There can often be a lot of confusion around the terms of steel quality, thickness, grade etc.

Chemical composition of steel is extremely important for it to be graded and set aside for intended use. Most national standards for structural steel refer to the term ‘Strength of the steel’, but its interpretation can vary. Yield strength (YS) refers to the value of applied stress at which permanent deformation occurs, Ultimate tensile strength (UTS) refers to the value of stress at which fracture occurs, and Notched fracture strength (NFS) refers to the stress at which fracture occurs in a body containing pre-existing cracks.

National standard of steel grade in Australia and New Zealand (AS/NZS 3678) is Grade 400 that refers to:
YS nominal 400 MPa
Plate 20-30mm: YS min 360 MPa, UTS min 480 MPa

National standards do not specify NFS (notched fractured strength) values that depend on size and sharpness of notch and can decrease when steel is brittle. Ductility & toughness tend to decrease when yield strength increases. So you need to be cautious with standards that only specify YS or UTS because they may permit steel that is brittle, which of course has low NFS.

Steel hollow sections is another important component that contributes to building a steel structure such as your farm shed. These components have the most effective cross-section for resisting torsional moments and offer advantages with regard to corrosion protection. The selection of steel hollow sections can be governed by many factors such as involving a comparison of the pros and cons concerning mechanical properties, unit material costs and the costs of fabrication, erection and maintenance. The experiences of engineers and fabricators also affect the choice. It is therefore very important that those involved in structural steel construction should understand the behaviour of hollow sections and their connections.

In relation to the roof and wall cladding thicknesses, the common terminology is BMT and TCT. BMT refers to the base metal thickness and TCT refers to total coated thickness. The thickness of the sheeting is mostly marketed as per TCT. For eg, sheeting marketed as .42 TCT is only .37 BMT.

Be Sure Exactly What Your Farm Shed Quote Does (And Does Not) Include!

The hidden cost component of any project is something that we all fear the most. You need to be vigilant and aware that you are comparing the same offer when reviewing quotations from shed suppliers. Depending on your particular project if they are applicable, items such as engineering, soil analysis, building permit applications, site preparation works, concrete, delivery, erection and even GST may or may not be included in the proposal being offered.

So firstly you need to be sure what items are applicable and secondly that they are allowed for in the price. These things that aren’t included (whilst may be argued aren’t exactly part of the ‘shed’ costs) can often still be required to be able to achieve the outcome of getting your shed built. They can make up a significant amount of the budget required and not having these items included in your proposal can fool you into thinking that it is a much more cost-effective option. That is until you have committed to the supplier, paid a deposit and then discovered you have further costs that you were previously unaware of.

You should also be aware of the proposed building site’s current condition (eg. soil types, presence of in-ground rock that will interfere with footings etc) and what will be involved in preparing your site before the erection process of your farm shed even starts. Considering the cost of excavation and clearing of the site is very important because poor quoting practices and misguided communication will ultimately result in budget blowouts.

To sum up, make sure you have the following included in all your quotation:

• Engineering & soil analysis

• Council building approvals & permits



• Delivery and erection costs

• Concrete and pad preparation materials

• Site preparation costs

Time Frame

It’s very important for your business that your shed is delivered on time because you plan your operations accordingly. Any good shed builder should provide you with a quote that clarifies the general timeline of the process and firm lead time for your project. Experienced shed building companies with proven results generally have a better capacity to take on new projects and get them delivered right and on time.

Wind Effect On Australian Sheds

To determine the effect of wind on your structure, you should examine three important factors that altogether influence the ways in which wind flows through or inflicts damage. This way, you will be able to effectively choose the right material and understand the engineering requirement for your farm shed that is required for your location.

Wind Regions

The average annual wind speed in continental Australia is reported to be 18 to 29 km/hr with frequent gusts of 80 km/hr and occasional wind speeds of greater than 115 km/hr. Land or coastal gale-force winds that are usually 50 km/hr or stronger affect wider areas and last much longer than thunderstorms.

Extreme winds generally occur in winter and spring in the southern part of Australia. Whereas the strongest winds show up in summer and autumn in the tropical north and are often due to tropical cyclones. Tropical cyclones produce gusts which may exceed the speed of 200 km/hr. These winds can cause sizable property damage, particularly to buildings and structures that haven't been designed to suit these conditions.

The strength of category-five cyclones near the coast can produce wind gusts that travel up to 300 km/hr. Tropical cyclones that typically form over warm ocean waters to the north of the continent escalate before crossing the coast. Wind regions in Australia are classified into four groups: A, B, C & D, according to the speed of the wind and range from normal to severe. Regions of Western Australia experience severe tropical cyclones where special engineering and experienced qualified design is critical to when building steel sheds in these regions.

Terrain Categories

Terrain category is determined according to the surrounding area of around 500m from the structure. Structures built in open terrain are more likely to face greater wind damage than those built in urban areas where obstructions like buildings and trees play a big role in minimising the speed and impact of wind.

Topographic Effect

The speeding effect of wind increases on an uphill slope downwind of a flat region caused by the shape and slope of undulating terrain. Hilly terrains greatly influence the passing wind flow, with both valleys and hill crests experiencing stronger wind speeds than over flat terrain. The topographic effect is well recognised from the damage surveys following different tropical cyclones that structures located on hillsides and hilltops are more susceptible to wind damage than those located at lower elevations. It is, therefore, necessary to include the topography effect to identify possible wind damage to your structure.


Do I Need A Permit To Build A Farm Shed In WA? 

You may mistakenly believe that because your shed will be built on your own farm property that you don’t require any sort of building approval or permit from local shire or council authorities. Each state & territory has different approval requirements when it comes to building rural steel farm sheds. It is the case though at the time of writing that in Western Australia there is an exemption for some agricultural structures although you need to check with your local authority for details.

Ignoring the planning permission can be risky for you as it might lead to having to dismantle and take down your shed. You could also be prevented from selling your property in future due to it having an unapproved structure built on it and would also most likely mean your structure is ineligible for insurance cover. Local Government will sooner or later discover an illegally built structure on a property as methods of surveillance have continued to improve with the advancement of technology. .

There are different legislative controls that aid the development of land use activities - from the initial process of clearing the land to building a structure such as a farm shed. Shire councils and Local Government Authorities control and govern the use and development of land within their jurisdiction. Constructional and building activities carried out on your property fall within the definition of development for which you need to seek advice on any legislative application requirements from your Local Government Authority.

Clearing native vegetation to make way for a new farm shed building without a permit or an exemption from the Department Of Environment Regulation (DER) can be defined as an offence in Australia. Once you apply for such a permit, you may require a site visit from DER or other Government agencies who would decide whether to grant or refuse the permit, taking various impacts on environmental issues like biodiversity, land degradation etc. into account.

Fire prevention and control measures are also an important consideration if they will be impacted by the building of your new shed. It’s critical they are identified and undertaken because there are strict regulations regarding fire control all over Australia, which if not followed, may lead to penalties. Additionally, landholders also require the approval of the respective body if they wish to conduct building and construction activity (which includes rural sheds) which may affect emergency service access routes on or through their property.

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