All About timber to span 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m & 6m

All About timber to span 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m & 6m

Timber has been a crucial building material for centuries, providing a strong and durable option for construction projects. From homes to furniture to bridges, timber is a versatile material that can be used in a variety of ways. However, when it comes to building structures that require longer spans, such as decks, pergolas, or even larger buildings, having the right knowledge about timber is essential. In this article, we will delve into the various factors that need to be considered when using timber to span distances of 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m, and 6m. From understanding different timber

What size timber to span 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m & 6m

What size timber to span 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m & 6m

When it comes to choosing the appropriate timber size to span a certain distance, there are several factors that need to be considered. These include the type of timber, the intended use of the structure, the load it will be supporting, and the expected lifespan of the structure. In this article, we will discuss the appropriate timber sizes to span distances of 2m, 2.4m, 2.5m, 3m, 3.6m, 4m, 4.8m, 5m, and 6m.

2m Span:
For a 2m span, it is recommended to use timber joists with a size of 38mm x 100mm or 50mm x 75mm. These sizes are suitable to support lightweight loads, such as internal floors or non-load bearing walls.

2.4m Span:
For a 2.4m span, timber joists with a size of 50mm x 125mm or 63mm x 75mm are recommended. These sizes are suitable for internal floors or load bearing walls.

2.5m Span:
For a 2.5m span, timber joists with a size of 50mm x 150mm or 63mm x 100mm are recommended. These sizes are suitable for internal floors, load bearing walls, or light duty beams.

3m Span:
For a 3m span, timber joists with a size of 63mm x 150mm or 75mm x 100mm are recommended. These sizes are suitable for internal floors, load bearing walls, or medium duty beams.

3.6m Span:
For a 3.6m span, timber joists with a size of 75mm x 175mm or 100mm x 100mm are recommended. These sizes are suitable for internal floors, load bearing walls, or heavy duty beams.

4m Span:
For a 4m span, timber joists with a size of 100mm x 125mm or 100mm x 150mm are recommended. These sizes are suitable for internal floors, load bearing walls, or heavy duty beams.

4.8m Span:
For a 4.8m span, timber joists with a size of 100mm x 200mm or 125mm x 150mm are recommended. These sizes are suitable for internal floors, load bearing walls, or heavy duty beams.

5m Span:
For a 5m span, timber joists with a size of 125mm x 225mm or 150mm x 200mm are recommended. These sizes are suitable for internal floors, load bearing walls, or heavy duty beams.

6m Span:
For a 6m span, timber joists with a size of 150mm x 250mm or 200mm x 200mm are recommended. These sizes are suitable for internal floors, load bearing walls, or heavy duty beams.

It is important to note that these recommendations are for general guidance purposes only. The actual size of the timber needed for a specific span will also depend on the spacing between the joists, the species of timber, and the presence of any other supporting structures. It is always recommended to consult a structural engineer for a more precise calculation of the required timber size.

What size timber to span 2m

What size timber to span 2m

When determining the appropriate timber size to span 2m, there are several factors that need to be considered. These include the type of timber, the load it will be supporting, and the distance between the supports.

1. Type of timber:
The type of timber used can greatly impact its ability to span a distance of 2m. Softwood, such as pine or spruce, is generally less strong than hardwood, such as oak or maple. Therefore, a hardwood timber may be able to span a longer distance without bending or breaking.

2. Load:
The load or weight that the timber needs to support is also an important factor. If the timber will only be supporting its own weight, then a smaller size may be appropriate. However, if it will be supporting heavy loads such as furniture or people, a larger size may be necessary.

3. Distance between supports:
The distance between the supports, also known as the span, is a critical factor in determining the timber size. The longer the distance between the supports, the more likely the timber will bend or break under the weight. Therefore, a shorter span may require a smaller timber size than a longer span.

Based on these factors, a general rule of thumb for selecting a timber size to span 2m is to use a timber that is one size larger than what would normally be recommended for the given load and support distance. For example, if a 2×6 timber is appropriate for a load of 1000 pounds and 1m span, then a 2×8 timber should be used for the same load with a 2m span.

It is important to note that these recommendations are only general guidelines. The specific timber size needed should be determined by a structural engineer or calculated using specialized software to ensure safety and structural integrity.

In conclusion, when determining the appropriate timber size to span 2m, the type of timber, load, and support distance must all be taken into consideration. Using a slightly larger timber size than what is typically recommended will help ensure the structural soundness and safety of the project. It is always best to consult with a professional engineer for specific recommendations to meet the unique needs of each project.

What size timber to span 2.4m

What size timber to span 2.4m

When it comes to selecting the appropriate size timber for spanning a distance of 2.4m, there are several factors to consider. These include the type of timber, the load it will be supporting, and the desired level of stiffness or deflection.

Firstly, let’s take a look at the different types of timber commonly used in construction. The most common types are softwoods such as pine, spruce, or cedar, and hardwoods like oak, maple, or teak. Softwoods are often used in residential construction and have a lower strength and stiffness compared to hardwoods, which are typically used in more heavy-duty construction projects.

Next, we need to determine the weight or load that the timber will be supporting. This can vary greatly depending on the intended use of the timber. For example, if the timber is being used as a beam in a roof structure, it will need to support the weight of the roof, including any additional loads from snow or wind. If it is being used as a floor joist, it will need to support the weight of the flooring materials, furniture, and occupants.

The third factor to consider is the desired level of stiffness or deflection. This refers to how much the timber will bend or flex under the weight it is supporting. In some cases, a stiffer timber may be preferred, while in others, some deflection may be acceptable. This will depend on the specific requirements of the project.

Taking all of these factors into account, a general rule of thumb for selecting the appropriate size timber to span 2.4m is to use a maximum span/depth ratio of 24. This means that for every 24 units of length, the timber should have a minimum depth of 1 unit. For example, a 2×4 (38mm x 89mm) pine timber could span 2.4m, but it would need to be supported at both ends to prevent excessive deflection. A larger 6×6 (140mm x 140mm) oak timber, on the other hand, could span 2.4m without any additional support.

It is important to note that the size and spacing of any supporting members, such as posts or columns, will also affect the size of the spanning timber. Additionally, incorporating bracing or using multiple layers of timber can increase its load-bearing capacity.

In conclusion, when selecting a timber to span 2.4m, it is crucial to consider the type of timber, the load it will be supporting, and the desired level of stiffness. A safe and effective timber size can be determined by using a maximum span/depth ratio of 24 and taking into account any additional support or bracing. Ultimately, it is best to consult with a structural engineer to ensure the appropriate timber size is selected for your specific project.

What size timber to span 2.5m

What size timber to span 2.5m

When it comes to building structures, it is important to carefully consider the type and size of materials being used. Timber is a popular choice for its strength, durability, and versatility in construction projects. However, when using timber for a span of 2.5m, it is crucial to select the appropriate size to ensure structural integrity.

To determine the size of timber required for a 2.5m span, there are several factors to consider, including the type of timber, load-bearing capacity, and spacing of the supports.

Type of Timber:

The type of timber being used is instrumental in determining the appropriate size for a 2.5m span. Hardwood timbers, such as oak or beech, are generally stronger than softwood timbers, such as pine or spruce. Therefore, hardwood timbers can span longer distances with less support than softwood timbers.

Load-bearing Capacity:

The length of the span is not the only factor in determining the size of timber needed, but also the load it will be supporting. The load on the timber can vary based on the type of structure being built. For example, a roof will have a lighter load compared to a floor that will have heavier furniture and foot traffic.

To determine the load-bearing capacity of different timber sizes, engineers use various timber span tables. These tables consider the timber type, dimensions, and spacing between supports to determine the maximum load the timber can bear without bending or breaking.

Support Spacing:

The spacing between the supports, also known as the joist spacing, is another crucial factor to consider when choosing the size of timber for a 2.5m span. The further apart the supports are, the more load the joist needs to bear. Therefore, the wider the support spacing, the larger the timber size should be to ensure structural stability.

For a 2.5m span, the support spacing should not exceed 600mm (24 inches) to ensure proper load distribution and prevent the timber from bending or sagging. The maximum allowable support spacing also varies based on the timber type and load, so it is essential to consult timber span tables for more accurate calculations.

In general, for a 2.5m span, a minimum size of 100mm x 50mm (4 inches x 2 inches) timber would be suitable for light loads, such as in a roof or ceiling. For heavier loads, such as in a deck or floor, a larger size of 150mm x 50mm (6 inches x 2 inches) or 200mm x 50mm (8 inches x 2 inches) would be a more appropriate choice.

In conclusion, when determining the size of timber required for a 2.5m span, it is imperative to consider the type of timber, load-bearing capacity, and support spacing. Following timber span tables and consulting with a structural engineer can help ensure the appropriate size of timber is selected to maintain the structural integrity of the building.

What size timber for 3m span flat roof

What size timber for 3m span flat roof

When designing a flat roof with a 3m span, it is important to consider the size and type of timber to be used. The size of the timber will depend on various factors such as the expected load, type of roofing material, and local building codes.

The commonly used timber sizes for a 3m span flat roof range from 50mm x 100mm to 100mm x 200mm. The size and spacing of the timber will also depend on the type of roofing material used. For example, if using lightweight roofing such as metal sheets or shingles, smaller sized timber and closer spacing can be used. However, if using heavier materials such as concrete tiles, larger sized timber and wider spacing would be required.

In addition, the expected load on the flat roof should also be taken into consideration. This includes the weight of the roofing material, snow load, and any potential live loads such as foot traffic or equipment. The timber size and spacing should be determined based on the maximum expected load to ensure the roof can withstand it without any deflection.

Moreover, it is important to adhere to local building codes and regulations when determining the size of timber for a flat roof. These codes specify the minimum size and spacing of timber based on the location and expected conditions. For example, a flat roof in areas with high wind speeds will require larger sized timber to withstand the wind load.

Additional factors such as the type of timber, quality, and strength grade also play a role in determining the suitable size for a 3m span flat roof. It is important to use good quality timber that is resistant to decay and can withstand weather conditions.

In conclusion, the size of timber for a 3m span flat roof will vary depending on factors such as roofing material, expected load, and local building codes. It is important to consult with a structural engineer or follow relevant building codes to determine the appropriate size and spacing of timber for a safe and durable flat roof.

What size timber to span 3m

What size timber to span 3m

When it comes to construction, timber has been a popular material of choice for centuries due to its durability, ease of use, and aesthetic appeal. When designing a structure, determining the appropriate size of timber is crucial for the safety and stability of the building. In this article, we will discuss what size timber is suitable for spanning 3m.

First, it is important to understand the role of timber as a structural element. Timber can be used as beams, columns, or trusses to support the weight of the structure and transfer it to the foundation. The size of the timber depends on various factors such as the type of wood, the load it needs to carry, and the span it needs to cover.

In general, the size of the timber is determined by its cross-sectional dimensions, which includes the width and depth of the beam. The wider and deeper the beam, the more weight it can support and the longer the span it can cover without bending or sagging.

For a 3m span, the type of wood used also plays a significant role in determining the appropriate size of timber. Hardwoods such as oak, maple, or beech are stronger and denser compared to softwoods like pine, spruce, or cedar. Therefore, a smaller size of hardwood may be able to support the same load as a larger size of softwood.

The intended use of the structure also factors into the size of the timber. A residential building, for example, will require a smaller size of timber compared to a commercial or industrial building, which may have higher loads and therefore require larger dimensions.

Other considerations that can affect the size of timber include the spacing between the beams, the type of connection used, and the shape of the beam (such as a rectangular or T-shaped cross-section). Consulting with a structural engineer is recommended to ensure the correct size and type of timber are used for the specific project.

In conclusion, the size of timber required to span 3m can vary depending on several factors. It is essential to consider the type of wood, intended use of the structure, and other structural elements when determining the appropriate size. Careful planning and professional advice can help ensure the safety and stability of the structure for years to come.

What size timber to span 3.5m

What size timber to span 3.5m

When determining the size of timber needed to span a distance of 3.5m, there are several factors that need to be taken into consideration. These include the type of timber being used, the expected load or weight that the timber will be supporting, and the spacing of the supports or beams.

Firstly, the type of timber being used plays a significant role in determining the size needed. Different types of timber have varying strengths and properties, which can affect their ability to span a specific distance. For example, softwoods like pine may not be as strong as hardwoods such as oak or ash, and therefore may require a larger size to span a 3.5m distance.

Secondly, the expected load or weight that the timber will be supporting must also be considered. This can include the weight of the structure itself, as well as any live loads such as people, furniture, or equipment. A heavier load will require a larger and stronger timber to ensure structural integrity and safety.

Another important factor is the spacing of the supports or beams. The further apart the supports are, the larger the timber will need to be to span the distance without sagging or bending. The standard spacing for timber supports is typically 400mm to 600mm, but this can vary depending on the specific project and load.

In general, for a 3.5m span, a timber size of at least 150mm x 50mm is recommended for softwoods, and 125mm x 50mm for hardwoods. However, it is always best to consult with a structural engineer or a timber supplier for specific recommendations based on the type of timber and load requirements for the project.

It is also important to note that local building codes and regulations may have specific requirements for timber sizes based on span distance and load, so it is essential to check these before finalizing the size of the timber.

In conclusion, the size of timber needed to span 3.5m will depend on several factors such as the type of timber, expected load, and spacing of supports. It is crucial to consider all of these factors and to consult with experts to ensure the proper size and strength of timber is used for a safe and structurally sound project.

What size timber to span 3.6m

What size timber to span 3.6m

When determining the appropriate size of timber to span a distance of 3.6 meters, there are several factors that need to be considered. These include the type and grade of timber, the expected load, and the spacing of the supports.

Firstly, the type and grade of timber will greatly impact its strength and ability to span a distance of 3.6 meters. Generally, hardwood timbers such as oak, elm, or maple have a higher strength and load-bearing capacity compared to softwoods like cedar, pine, or spruce. The grade of timber also plays a crucial role, as it takes into account factors such as knots, warping, and decay, which can affect the strength of the timber.

Secondly, the expected load that the timber will bear is an important consideration. This includes both the dead load (the weight of the structure itself) and the live load (any additional weight that will be placed on the structure, such as furniture or people). The amount and distribution of the load will determine the size and spacing of the supports needed, which will in turn impact the size of the timber required to span 3.6 meters.

Lastly, the spacing of the supports also plays a significant role in determining the size of timber needed. The closer the supports are placed, the smaller the size of the timber required to span a distance of 3.6 meters. For example, if the spacing between supports is 600 mm, a larger and stronger timber will be needed compared to a spacing of 1200 mm.

Based on the above factors, it is recommended to use a minimum of 200mm x 50mm timber for a 3.6-meter span, assuming a live load of 0.7 kN/m2 and a dead load of 0.5 kN/m2. This size of timber is commonly available and will provide a safe and sturdy structure. However, for heavier loads or longer spans, it may be necessary to use a larger timber size, such as 250mm x 50mm or even 300mm x 50mm.

In conclusion, when determining the appropriate size of timber to span 3.6 meters, it is important to consider the type and grade of timber, the expected load, and the spacing of supports. Consulting a structural engineer or using a timber span calculator can help ensure that the selected timber size is suitable for the specific project requirements.

What size timber to span 4m

What size timber to span 4m

When it comes to building structures, determining the right size of timber to span 4m is crucial for ensuring structural stability and safety. As a civil engineer, I have a thorough understanding of the factors that need to be considered when selecting timber size for a 4m span.

Firstly, it is important to identify the type of timber being used. Different types of timber have varying densities, strengths, and resistance to bending. For instance, hardwoods such as oak and maple are known for their high density and strength, making them suitable for longer spans compared to softwoods like pine and cedar.

Secondly, the load that the timber will be subjected to needs to be calculated accurately. This includes the dead load, which is the weight of the structure itself, and the live load, which refers to the weight of any occupants, furniture, or equipment that will be supported by the timber. This calculation will help determine the required strength and stiffness of the timber.

In addition, the spacing of the timber plays a crucial role in determining its size. The more supports used, the smaller the size of the timber needed. For example, a 4m span with four supports will require timber with different dimensions compared to the same span with two supports.

The type and number of fasteners used in joining the timber members also impact the size of the timber needed. The larger the fasteners, the more strength it provides, allowing for smaller timbers to be used. On the other hand, if smaller fasteners are used, the timber dimensions will have to be increased to compensate for the reduced strength.

Another important factor to consider is the environmental conditions the timber will be exposed to. For outdoor structures, timber with a higher moisture content will be more susceptible to warping and decay, which can affect its structural integrity. Therefore, a higher grade and larger size timber might be required to withstand these conditions.

Lastly, the building codes and regulations for timber design must be followed. These standards provide guidelines for selecting the appropriate timber size based on various factors such as span, load, and material properties.

In conclusion, the size of timber needed to span 4m will depend on a variety of factors including the type of timber, load, spacing, fasteners, environmental conditions, and building codes. As a civil engineer, it is important to carefully consider all these factors in order to select the right size of timber for a safe and structurally sound construction.

What size timber to span 4.5m

What size timber to span 4.5m

When it comes to determining the appropriate size timber to span a distance of 4.5 meters (14.76 feet), there are a few key factors that need to be considered. These include the type and grade of timber, the type of load it will be supporting, and the spacing of supports.

Firstly, it is important to choose a type of timber that is suitable for structural use. Commonly used timbers for construction include Douglas fir, Southern pine, and Spruce pine fir. These timbers have been tested and graded for their strength and stiffness properties, making them safe and reliable choices for structural applications.

Next, the type of load that the timber will be supporting must be taken into account. The two main types of loads are dead loads and live loads. Dead loads refer to the weight of the structure itself, while live loads refer to the weight of people, furniture, or other items that will be supported by the timber. For residential construction, a common live load requirement is 40 pounds per square foot (psf) for floors and 10 psf for roofs. However, for commercial or industrial buildings, the live load requirement may be higher.

The spacing of supports is another important factor to consider when determining the size of timber needed to span 4.5m. The more supports there are, the shorter the distance between them, which reduces the amount of weight that each timber needs to support. This means that larger and stronger timbers can be used when there are fewer supports.

To calculate the size of the timber needed, engineers use a combination of the type and grade of timber, the type of load, and the spacing of supports to determine the maximum allowable bending stress, or the amount of stress that the timber can withstand without breaking. Using this value, they can then determine the required section modulus, which is a measure of the strength and stiffness of the timber.

For example, if we use a Douglas fir timber with a grade of No. 2 and a 40 psf live load, a 4×10 timber with spaced supports at 16 inches on center would be adequate to span 4.5m. However, if the live load requirement is increased to 60 psf, a 4×12 timber would be needed for the same span.

In conclusion, determining the appropriate size timber to span 4.5m involves considering the type and grade of timber, the type of load, and the spacing of supports. It is important to consult with a qualified engineer to ensure that the chosen timber is able to safely and efficiently support the required loads over the specified span.

What size timber to span 4.8m

What size timber to span 4.8m

When planning a construction project, it is important to consider the size and type of materials needed for structural support. In particular, when spanning a distance of 4.8m (15.7ft), the selection of timber is crucial for ensuring the stability and safety of the structure.

The size of the timber required to span 4.8m will depend on various factors such as the type of timber, the spacing of supports, and the intended use of the structure. Generally, the larger the distance that needs to be spanned, the larger and stronger the timber needs to be.

One of the most commonly used timber species for construction purposes is Douglas Fir. Its strength and stiffness make it suitable for spanning relatively long distances. Using this as an example, the following are some recommended sizes for timber to span 4.8m:

1. 75 x 225mm (3 x 9 inches): This size of timber can be used for light floor or roof joists with a maximum spacing of 400mm (16 inches) between supports. It is suitable for light residential construction such as single-family homes.

2. 100 x 300mm (4 x 12 inches): This timber size is commonly used for heavier floor and roof joists with a maximum spacing of 600mm (24 inches) between supports. It can also be utilized in light commercial or industrial buildings.

3. 140 x 300mm (6 x 12 inches): This size of timber is suitable for larger commercial or industrial structures with a maximum spacing of 900mm (36 inches) between supports. It is also commonly used for larger residential projects like apartment buildings or multi-story homes.

It is important to note that the above-mentioned sizes are general recommendations and may vary depending on the specific design and load requirements of the structure. It is always best to consult a structural engineer for accurate timber sizing recommendations for any given project.

In addition to the size of the timber, other factors such as the grade and quality of the timber, as well as proper installation techniques, are essential for ensuring structural integrity. It is also important to regularly inspect and maintain the timber to prevent any issues such as rot or termite damage.

In conclusion, when selecting timber to span 4.8m, it is essential to consider the type, size, and strength requirements of the structure. Proper timber selection and installation are crucial for ensuring a safe and sturdy construction project.

What size timber to span 5m

What size timber to span 5m

When it comes to selecting the right size timber to span a distance of 5m, there are several factors that need to be taken into consideration. These include the load that the timber will be supporting, the type of timber being used, and the spacing of the supporting structure.

Load Capacity:
The first and most important factor in determining the size of timber to span 5m is the amount of load that the timber will need to support. The load can be divided into two categories – dead load and live load. Dead load refers to the weight of the structure itself, while live load refers to any additional weight that may be placed on the structure, such as furniture or people. In general, a timber’s load capacity is directly proportional to its size and strength. Therefore, the more weight the timber needs to support, the larger and stronger it should be.

Type of Timber:
The type of timber being used also plays a crucial role in determining its load capacity. Different types of timber have different levels of strength, and some are better suited for certain applications than others. For example, softwoods such as pine or spruce have lower load capacities compared to hardwoods like oak or cedar. When selecting timber for a 5m span, it is essential to choose a type that is known for its strength and durability.

Supporting Structure:
The spacing and arrangement of the supporting structure also have a significant impact on the size of timber needed for a 5m span. The closer the supporting beams or columns are to each other, the smaller the timber can be. On the other hand, if the supports are further apart, larger and stronger timber will be required to ensure the structure’s stability.

Based on these factors, the most common size timber used to span a distance of 5m is typically a 6×12 or 8×12 beam. However, this can vary depending on the specific load requirements and type of timber being used. It is essential to consult with a structural engineer to determine the best size and type of timber for a specific project.

In conclusion, selecting the right size timber to span 5m is crucial for the structural integrity of any construction project. It is essential to consider the load capacity, type of timber, and supporting structure when making this decision. Consulting with a professional engineer is highly recommended to ensure the safety and stability of the structure.

What size timber to span 6m

What size timber to span 6m

When determining the appropriate size timber to span a distance of 6m (approximately 19.7 feet), several factors must be considered. These include the weight and type of load that the timber will be supporting, the type of timber being used, and the spacing between the supports.

The first step is to determine the expected weight of the load that the timber will be supporting. This can typically be found in building plans or by consulting with the architect or structural engineer. This weight will determine the required strength of the timber and will guide the selection of the appropriate size.

The second factor to consider is the type of timber being used. Softwoods, such as pine or cedar, are typically less dense and have a lower load-bearing capacity compared to hardwoods, such as oak or maple. Therefore, hardwoods may require smaller dimensions compared to softwoods to achieve the same strength.

The spacing between supports is also an important consideration. The further apart the supports are, the more likely the timber will need to be larger to provide sufficient strength. On the other hand, if the supports are closer together, the timber may be able to be smaller in size.

Based on these factors, a general rule of thumb for selecting the appropriate size timber to span 6m is to use a minimum of 6×8 (150mm x 200mm) timber for a uniformly distributed load such as a floor or roof. This size may vary depending on the type and weight of the load, as well as the spacing between supports.

Other factors to keep in mind when selecting the size of the timber include the potential for rot or damage due to insects or weather, and the type of joinery used to connect the timber. It is important to consult with a structural engineer or other qualified professional when determining the appropriate size for timber spans, to ensure the safety and structural integrity of the building.

In summary, the appropriate size timber to span 6m will depend on a variety of factors, including the expected load, type of timber, spacing between supports, and potential for wear and tear. It is crucial to take into consideration all of these factors, as well as consulting with a professional, to determine the safest and most suitable size for your structural needs.

Conclusion

In conclusion, timber is a versatile and important material when it comes to construction and building projects. Its availability, strength, and flexibility make it a popular choice for spanning various lengths, ranging from 2m to 6m. With proper selection, treatment, and installation techniques, timber can provide reliable and durable support for structures and ensure their stability. Whether it’s for residential, commercial, or industrial use, timber remains a cost-effective and sustainable option for spanning different lengths. As we continue to explore and innovate in the construction industry, timber will undoubtedly remain a crucial component, showcasing its timeless appeal and enduring functionality. Therefore, understanding the different factors and considerations when using timber to span 2m, 2.4m, 2.


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