TRADA’s Eurocode 5 span tables‚ a definitive guide for designers‚ specifiers‚ and builders‚ offer softwood sizes and spans.
This resource is essential for calculating timber member dimensions.
The tables‚ available as a PDF‚ are a well-established key resource in timber specification and building design practices.
What are TRADA Timber Span Tables?
TRADA Timber Span Tables are comprehensive resources detailing allowable spans and spacing for solid timber members used in floors‚ ceilings‚ and roofs of dwellings. These tables‚ frequently accessed as a PDF document‚ are based on Eurocode 5‚ the European standard for timber structure design.
They provide a quick and efficient method for determining appropriate timber sizes‚ eliminating complex calculations for common building scenarios. The PDF format allows for easy distribution and on-site access. However‚ it’s crucial to ensure you’re using the most current version‚ as updates are released to reflect changes in standards and user feedback. These tables are considered the definitive reference for softwood specifications.
Importance for Construction Professionals
For construction professionals – designers‚ specifiers‚ and builders – TRADA Timber Span Tables‚ often utilized in PDF format‚ are invaluable tools. They streamline the design process‚ offering pre-calculated spans for common timber sizes‚ reducing time spent on manual calculations and minimizing potential errors.
Access to these tables ensures compliance with Eurocode 5 standards‚ vital for building regulations. The PDF’s portability facilitates on-site referencing. However‚ professionals must verify they are using the latest version via the Construction Information Service (uk.ihs). Accurate span selection‚ guided by these tables‚ directly impacts structural integrity and project efficiency‚ making them essential for safe and compliant construction.
Current Version and Updates (as of 02/03/2026)
As of today‚ 02/03/2026‚ the 4th edition of the TRADA Eurocode 5 span tables for solid timber members in floors‚ ceilings‚ and roofs for dwellings is current. This edition incorporates user feedback‚ aiming for improved industry relevance and usability.
It’s crucial to note that the PDF version downloaded or accessed must be verified as uncontrolled; always confirm you’re using the most up-to-date document. TRADA recommends checking the Construction Information Service (uk.ihs) for the latest revisions. Regular updates reflect changes in standards and best practices‚ ensuring professionals have access to accurate and reliable data for compliant and safe timber construction.

Understanding Eurocode 5
Eurocode 5 details timber structure design‚ and TRADA span tables are built upon its principles. BM TRADA offers Eurocode 5 training courses.
Eurocode 5: Design of Timber Structures
Eurocode 5 provides a comprehensive framework for the structural design of timber buildings‚ encompassing various aspects from material properties to load combinations and structural detailing. It’s a crucial standard for ensuring the safety and performance of timber constructions across Europe.
The standard details methods for calculating the strength and stability of timber members‚ considering factors like species‚ grade‚ and moisture content. It also addresses connections‚ bracing‚ and other essential elements of timber structures. Understanding Eurocode 5 is paramount for anyone involved in timber design and construction.
TRADA’s span tables are directly aligned with Eurocode 5 principles‚ offering a practical application of the standard’s requirements. They simplify the design process by providing pre-calculated spans and sizes for common timber sections.
Relationship between Eurocode 5 and TRADA Tables
TRADA’s span tables aren’t simply a rehash of calculations; they represent a practical interpretation and application of the principles outlined in Eurocode 5. The tables provide a convenient and efficient way to access pre-calculated spans and sizes‚ derived directly from Eurocode 5’s methodologies.
Essentially‚ the tables act as a user-friendly tool‚ translating the complex equations and considerations of Eurocode 5 into readily usable data for designers and builders. They streamline the design process‚ reducing the need for extensive manual calculations while maintaining full compliance with the standard.
Using the PDF format span tables ensures adherence to Eurocode 5‚ offering a reliable and validated resource for timber construction projects.
BM TRADA and Eurocode 5 Training
BM TRADA recognizes the complexities of Eurocode 5 and offers comprehensive training courses designed to equip construction professionals with the necessary knowledge and skills. These courses delve into the principles of timber design‚ focusing on the practical application of Eurocode 5 standards.
Understanding how to correctly interpret and utilize the TRADA span tables – often accessed as a PDF – is a key component of this training. Participants learn to navigate the tables effectively‚ ensuring accurate and compliant designs.
BM TRADA’s training empowers users to confidently apply Eurocode 5‚ maximizing the benefits of the span tables and minimizing potential errors in timber construction projects.

Key Components of TRADA Span Tables
TRADA span tables‚ often in PDF format‚ detail timber species‚ grades‚ load types‚ and span/spacing definitions.
These elements are crucial for accurate structural calculations.
Timber Species and Grades
TRADA span tables meticulously categorize timber by species and grade‚ a fundamental aspect of structural design. The PDF documents clearly outline allowable spans based on these classifications. Common species include various softwoods‚ with grading systems defining strength and quality.
Different timber grades—like C16‚ C24‚ and others—represent varying structural capacities. The tables specify which grades are suitable for particular applications and spans. Understanding these distinctions is vital for ensuring structural integrity and compliance with building regulations. TRADA’s documentation provides detailed information on each grade’s characteristics‚ allowing professionals to select the appropriate timber for their projects. Accurate species and grade identification is paramount when utilizing these tables.
Load Types (Domestic vs; Other)
TRADA span tables differentiate between ‘normal loading conditions’ typical of domestic construction and other‚ more demanding scenarios. The PDF clearly states that all figures presented are based on these standard domestic loads. This distinction is crucial‚ as non-domestic applications—like commercial buildings—require different calculations and safety factors.
For any situation deviating from typical domestic use‚ direct consultation of TRADA documents or a structural engineer is essential. The tables are not intended for use in projects with unusual or heavy loads. Understanding this limitation is vital for safe and compliant design. Always verify load requirements before applying span data from the PDF.
Span and Spacing Definitions
Within the TRADA timber span tables PDF‚ precise definitions of ‘span’ and ‘spacing’ are fundamental to correct application. ‘Span’ refers to the clear distance between supports‚ while ‘spacing’ denotes the distance between timber members – typically joists or rafters. These are not total lengths‚ but clear distances.
Accurate interpretation of these terms is critical for structural integrity. The tables provide allowable spans for specific spacings‚ and vice versa. Incorrectly applying these values can lead to under-engineered structures. The PDF assumes consistent loading across the span; variations require further analysis. Always double-check units and definitions before use.

Floors – Solid Timber Members
TRADA’s PDF span tables detail allowable spans and sizes for floor joists‚ considering domestic loading.
Additional joists are specified for partition support.
Span Tables for Floors (General Overview)
TRADA’s span tables for floors‚ readily available in PDF format‚ provide crucial data for solid timber member design in dwellings. These tables present allowable spans and spacing for common timber sizes‚ specifically tailored for typical domestic construction loads.
The tables are organized to facilitate quick reference‚ enabling designers to efficiently determine appropriate joist dimensions. Consideration is given to normal loading conditions; however‚ the documentation emphasizes that for any non-domestic application‚ direct consultation with the full TRADA document is essential.
Furthermore‚ the PDF includes guidance on accommodating additional joists required to support partitions‚ ensuring structural integrity and load distribution. These tables are a cornerstone of compliant and efficient floor construction.
Joist Spans and Sizes
TRADA’s PDF span tables detail joist spans and sizes‚ offering a comprehensive resource for floor construction. These tables present allowable spans based on timber species‚ grade‚ and spacing‚ enabling precise selection of joist dimensions.
The tables cover a range of common timber sizes‚ facilitating efficient design for typical domestic floor layouts. Users can quickly identify suitable joist sizes to meet specific span requirements‚ ensuring structural adequacy.
It’s crucial to remember that these spans are predicated on normal loading conditions. The PDF also highlights the need to account for additional joists when supporting partitions‚ with specific tables (like Table 4) indicating when one or two extra joists are necessary for adequate support.
Additional Joists for Partitions
The TRADA PDF span tables address the impact of partitions on floor joist loading‚ providing guidance on incorporating additional support. Partitions must be fixed securely through the floor decking and into the joists below to distribute loads effectively.
Tables 4 and 4 within the PDF specifically detail when additional joists are required. Generally‚ one extra joist is sufficient‚ but in certain scenarios‚ two may be necessary to maintain structural integrity. The tables clearly mark spans requiring this increased support.
Properly accounting for partition loads is vital for safe and durable floor construction. The PDF ensures designers can accurately determine the necessary joist configuration‚ avoiding potential issues related to deflection or overloading.

Ceilings – Solid Timber Members
TRADA’s PDF span tables offer allowable spans and spacing details for common timber sizes used in ceiling construction‚ based on normal loading conditions.
Span Tables for Ceilings (General Overview)
TRADA’s span tables‚ accessible in PDF format‚ provide crucial data for ceiling construction using solid timber members. These tables detail allowable spans and spacing for frequently used timber sizes‚ streamlining the design process.
All figures presented within the tables are predicated on standard loading conditions typically encountered in domestic buildings. It’s vital to remember that these spans are specifically for dwellings.
For any construction scenario deviating from these normal domestic loads‚ direct consultation of the complete TRADA document is strongly advised. This ensures structural integrity and adherence to building regulations. The PDF is a key resource for accurate calculations.
Common Timber Sizes for Ceiling Construction
The TRADA span tables‚ conveniently available as a PDF‚ offer details for common timber sizes utilized in ceiling construction. These tables present allowable spans and spacing‚ facilitating efficient design and material selection.
The PDF document covers a range of timber dimensions frequently employed in residential ceiling applications. Designers can quickly reference these tables to determine appropriate joist and rafter sizes based on load requirements.
Remember‚ all data is based on typical domestic loading. For non-standard applications‚ always consult the full TRADA documentation. Utilizing the PDF ensures compliance and structural soundness in ceiling projects.
Allowable Spans and Spacing for Ceilings
The TRADA span tables‚ accessible in PDF format‚ provide crucial data regarding allowable spans and spacing for ceilings constructed with solid timber members. These tables are designed for dwellings and offer a quick reference for designers and builders.
Within the PDF‚ you’ll find detailed information on how span lengths are affected by timber size and load conditions. Proper spacing is critical for structural integrity‚ and the tables clearly outline recommended intervals.
Remember‚ these figures are based on normal loading. Always refer to the complete TRADA document or consult with local building control for non-standard applications to ensure safety and compliance.

Roofs – Solid Timber Members
TRADA’s PDF span tables detail rafter spans and sizes for solid timber roofs‚ excluding trussed rafter roofs‚ aiding designers in structural calculations.
Span Tables for Roofs (General Overview)
TRADA’s span tables‚ accessible in PDF format‚ provide crucial data for designing solid timber roofs. These tables outline allowable spans and appropriate sizes for rafters‚ facilitating compliant and efficient roof construction.
It’s important to note these tables specifically address roofs constructed with solid timber members and exclude designs utilizing trussed rafters. The PDF document presents information based on normal loading conditions typically found in domestic buildings.
For non-domestic applications or unusual loading scenarios‚ direct consultation with the complete TRADA documentation is essential. Utilizing the PDF’s search functionality quickly locates relevant span information for specific timber species and roof configurations‚ streamlining the design process.
Rafter Spans and Sizes
The TRADA timber span tables‚ available as a detailed PDF‚ offer comprehensive guidance on selecting appropriate rafter spans and sizes for solid timber roofs. These tables detail allowable spans based on timber species‚ grade‚ and loading conditions.
Designers can efficiently determine suitable rafter dimensions by referencing the tables within the PDF document. The information presented is crucial for ensuring structural integrity and compliance with building regulations.
Remember‚ the PDF focuses on solid timber rafters; trussed rafter roofs are specifically excluded from these tables. Always verify you are using the current version of the PDF‚ accessed through the Construction Information Service (uk.ihs)‚ for accurate data.
Excluding Trussed Rafter Roofs
It’s crucial to understand that the TRADA timber span tables‚ provided in PDF format‚ specifically exclude guidance for trussed rafter roofs. These tables are designed for solid timber rafter systems only. Designers must utilize alternative resources and calculations when specifying trussed rafters.
The PDF document clearly delineates this limitation‚ emphasizing the need for separate design considerations for trussed roof structures. Relying on the solid timber span tables for trussed rafters would be incorrect and potentially unsafe.
Always confirm the roof type before referencing the TRADA PDF. Accessing the latest version via the Construction Information Service (uk.ihs) ensures you have the most accurate and applicable information for solid timber roof design.

Using the PDF Format
TRADA span tables are available as a PDF; navigate it efficiently using its features. Ensure you’re using the current version from uk.ihs!
The PDF’s search functionality quickly locates specific timber sizes and spans.
Navigating TRADA Span Tables PDF
TRADA’s span tables‚ delivered in PDF format‚ require familiarity with its navigation tools for efficient use. The document is structured to allow quick access to relevant data‚ but understanding its layout is key. Utilize the table of contents for direct jumps to specific sections – floors‚ ceilings‚ or roofs.
The PDF is designed for easy searching; employ the search function (Ctrl+F or Cmd+F) to locate specific timber species‚ sizes‚ or load conditions. This is particularly useful when dealing with complex projects requiring precise specifications. Remember this is an uncontrolled copy‚ so always verify against the latest version.
Pay attention to the table notes and definitions‚ as they clarify the parameters and limitations of the provided span data. Proper interpretation ensures accurate and safe structural design.
Search Functionality within the PDF
The TRADA Timber Span Tables PDF incorporates robust search functionality‚ crucial for quickly locating specific data within the extensive document. Utilizing the search tool (typically Ctrl+F or Cmd+F) allows users to pinpoint information based on keywords like timber species – for example‚ “spruce” or “pine” – or specific dimensions‚ such as “4×6”.
Searching by load type‚ like “domestic” or referencing specific table numbers (e.g.‚ “Table 4”)‚ can also expedite the process. Remember to experiment with different search terms to refine results. The PDF’s searchable text enables efficient access to allowable spans and spacing for various construction scenarios.
However‚ ensure your search terms are accurate to avoid irrelevant results. This feature is vital for designers needing rapid access to critical span data;
Ensuring Use of the Most Current Version (CIS)
Maintaining access to the latest TRADA Timber Span Tables is paramount for accurate and compliant designs. The PDF document is periodically updated to reflect changes in standards and user feedback. UNIWEST and TRADA Technology emphasize that downloaded copies are uncontrolled.
To guarantee you’re using the current version‚ search the Construction Information Service (uk.ihs). This online platform provides access to the most up-to-date tables‚ ensuring your calculations are based on the latest data. Regularly checking uk.ihs is a best practice.
Reliance on outdated PDFs can lead to incorrect sizing and potential structural issues. Prioritize accessing the tables through the CIS for professional integrity and safety.

Limitations and Considerations
TRADA span tables are based on normal loading conditions for domestic construction. For other situations‚ consult TRADA documents directly or your LBC.
Normal Loading Conditions
TRADA span tables provide figures based on typical loads encountered in standard domestic construction scenarios. These “normal loading conditions” represent commonly experienced weight distributions within residential buildings‚ encompassing furniture‚ occupants‚ and typical stored items.
However‚ it’s crucial to understand that these tables do not account for unusual or concentrated loads. Any deviation from standard domestic use – such as commercial spaces‚ storage of heavy equipment‚ or significant alterations to the building’s layout – necessitates a more detailed structural analysis.
In such cases‚ direct consultation with the full TRADA documentation‚ or engagement with a qualified structural engineer‚ is essential to ensure structural integrity and compliance with building regulations. Relying solely on the span tables under non-standard conditions could compromise safety.
When to Consult TRADA Documents Directly
While TRADA span tables offer a convenient reference‚ they are not a substitute for comprehensive structural analysis in all situations. Direct consultation of the complete TRADA documents is vital when dealing with non-standard construction projects or unusual loading scenarios.
Specifically‚ refer to the full documentation for projects outside typical domestic dwellings‚ those involving significant design variations‚ or when encountering loads exceeding the ‘normal’ conditions outlined in the tables. This ensures accurate calculations and adherence to building regulations.

The PDF format of the full TRADA documents provides detailed guidance‚ allowing for a thorough understanding of the underlying principles and enabling informed design decisions. Always prioritize comprehensive documentation for complex projects.
Local Building Control (LBC) Consultation
Even with diligent use of TRADA span tables and adherence to Eurocode 5‚ consulting your Local Building Control (LBC) is crucial. They possess specific knowledge of local regulations and site conditions that may influence structural requirements.
The LBC can provide clarification on interpretations of the tables‚ particularly regarding unusual designs or complex loading scenarios. They ensure your project complies with all applicable building standards‚ safeguarding structural integrity and occupant safety.
Remember‚ the TRADA tables are a tool‚ not a replacement for professional judgment and regulatory oversight. The PDF version of the tables should be readily available for review during LBC inspections‚ demonstrating due diligence in your design process.

Resources and Further Information
TRADA Technology’s website (trada.co.uk) and the Construction Information Service (uk.ihs) offer access to the TRADA span tables PDF and related publications.
TRADA Technology Website
TRADA Technology’s official website serves as a primary resource for accessing and understanding their comprehensive range of timber span tables‚ including the crucial PDF versions. The site provides direct links to purchase the latest editions‚ ensuring users have access to the most current data compliant with Eurocode 5.
Beyond simply offering the PDF for download‚ TRADA’s website features detailed information about the tables’ scope‚ application‚ and underlying methodology. Users can find supplementary guidance‚ technical notes‚ and clarifications to aid in accurate interpretation and implementation. Furthermore‚ TRADA provides information regarding their training courses designed to enhance understanding of Eurocode 5 and the effective utilization of their span tables.
Regular updates and announcements regarding revisions to the tables are also posted on the website‚ keeping professionals informed about changes and ensuring projects adhere to the latest standards.
Construction Information Service (uk.ihs)
The Construction Information Service (CIS)‚ accessible at uk.ihs‚ is a vital platform for ensuring access to the most current versions of TRADA Timber Span Tables‚ including the PDF format. As highlighted‚ it’s crucial to verify you’re using an uncontrolled copy. CIS acts as a central repository for construction-related documentation‚ offering a reliable source for updated standards and regulations.
Through uk.ihs‚ professionals can search for and obtain the latest TRADA publications‚ guaranteeing compliance with current building codes and best practices. This service is particularly important given the potential for outdated or superseded versions to circulate. The CIS provides a controlled environment for accessing these critical resources‚ minimizing the risk of errors and ensuring project integrity.
Regularly checking uk.ihs is recommended to stay informed about revisions and updates to the TRADA span tables.
Relevant Publications (Porteous & Kermani‚ 2007)
The publication by Porteous & Kermani (2007)‚ “Structural Timber‚” serves as a foundational text complementing the TRADA Timber Span Tables‚ particularly when working with the PDF versions. This resource provides deeper theoretical understanding of timber structures‚ enhancing the practical application of the span tables.
While the TRADA tables offer readily available span data‚ Porteous & Kermani’s work delves into the underlying principles of timber design‚ aiding in situations requiring customized solutions or interpretations beyond the scope of the tables. It’s a valuable reference for understanding the calculations and assumptions behind the tabulated values.
For comprehensive design and a thorough grasp of timber behavior‚ consulting both the TRADA span tables PDF and publications like Porteous & Kermani (2007) is highly recommended.


























































































