Colorbeam Flat Roof Span Tables - Certification - Technical Specifications - Connection Details - How to Use Span Tables

Oct 28, 2026

Colorbeam flat roof span tables provide engineering guidance for designing and installing cold-formed structural box-section beams used in carports, awnings, patios, and verandahs. The manual outlines applicable Australian Standards, selected load combinations (dead, live, and wind), serviceability limits including maximum deflection of 20mm, and rules for non-cyclonic areas, open structures, and roof pitch (maximum 5°). It also covers connection requirements, storage and handling, and cutting considerations, plus component identification and material specifications for standard Colorbeam sections.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages56

Reading Time2 h 21 min

AccessFree to download

Design Notes to Span Tables

Technical Specifications

Working With Colorbeam®

Connection Details

How to Use Span Tables

COLORBEAM® FLAT ROOF SPAN TABLES Non Cyclonic Areas Carports ➔ Awnings ➔ Patios ➔ Verandahs Certification Page 3 | Design Notes to Span Tables | Page 4 | | --- | --- | | Technical Specifications | Page 5 | | Working With Colorbeam® | Page 6 | | Connection Details | Page 7 | | How to Use Span Tables | Page 9 | Key A = Attached AO = Attached with roof sheet overhang F = Free standing FO = Free standing with roof sheet overhang Colorbeam ® Span Tables For ease of use span tables have been categorised into typical applications for long and short spanning roof sheets. | Attached Flat Roofs – pages 12 – 33 | | | --- | --- | | Long Spanning Roof Sheet Applications | Short Spanning Roof Sheet Applications | | Free standing Flat Roofs – pages 34-55 | | | --- | --- | | Long Spanning Roof Sheet Applications | Short Spanning Roof Sheet Applications | 5F Page 44 – 46 5F Optional overhang Page 44 – 46 6F Page 47 – 49 6F (Optional overhang) |
| | --- | | | Page 47 – 49 7F Page 50 – 52 COLORBEAM® flat roof span tables. FRT-1 .1 November 2014. 3 General These span tables have been prepared for the use of Spantec Colorbeam® in a range of free standing and attached verandah, patio, awning and carport designs. Australian Standards The structural sections comply with the following Australian Standards. • AS/NZS 4600-2005 Cold-formed Steel Structures • AS/NZ 1170.1 2002 Structural design actions – Permanent imposed and other actions • AS/NZ 1170.2 2011 Structural design actions – Wind actions • AS 3566.1-2002 Self Drilling Screws • AS 4055-2012 Wind Loads for Housing. All other proprietary products to be in accordance with the manufacturers specifications Load Combinations The following load combinations have been used: Dead Load 0. 1kpa – this does not allow for ceilings Live Load Colorbeam® span tables are designed for non-trafficable roofs. Use crawl boards during installations – see ‘Working with Colorbeam®’. Wind Load Span tables have been designed for five Wind Classification regions: N1 (W28), N2 (W33), N3 (W41), N4 (W50), N5 (W60) Serviceability Dead Load: Span/300 Wind Load: Span/150 Maximum deflection has been limited to 20mm. Freestanding or Attached For the purposes of these tables, roofs are deemed to be freestanding unless they are attached to an existing structure by at least 50% of their shortest side and the longest side does not exceed twice the length of the shortest side. Open Structures (Not Enclosed) These span tables are to be used for structures that fall within the definition of “open” buildings- i. e. two or more sides “open”(roof cladding adjacent to an open side to be at least 500mm from adjacent building or boundary) . Non Cyclonic Area These span tables are for use in non cyclonic areas as defined by AS 1170.2-2011 Connections Connections require the use of brackets with the minimum number of screws specified in the Colorbeam® span tables. Roof Pitch Use recommended minimum roof pitches as specified by roof sheet supplier. Flat roof span tables allow for a maximum roof pitch of 5º . Posts These span tables are designed for a minimum post size of 50 x 50 x 2. 5mm up to a maximum height of 3. 0m. Spantec has prepared these tables for use by people skilled in the design and specification of the type of structures covered. Spantec accepts no responsibility for misinterpretation of the information provided oromissions. Users should satisfy themselves as to the suitability of the span tables for their applications. COLORBEAM® flat roof span tables. FRT-1.1 November 2014. 4 Colorbeam ® Spantec Colorbeam® is a cold formed structural ‘box-section’ beam manufactured from two high tensile zinc coated ‘C’-sections which are fixed together by countersunk rivets on the top and bottom flanges to form a rectangular hollow section. This uniquely engineered section provides benefits of superior structural per

FAQs

What types of flat roof structures are these span tables intended for?

They are prepared for use in free standing and attached verandah, patio, awning, and carport designs using Spantec Colorbeam®.

Which Australian Standards are referenced for structural compliance?

The manual lists AS/NZS 4600-2005, AS/NZ 1170.1 (2002), AS/NZ 1170.2 (2011), AS 3566.1-2002, and AS 4055-2012.

How are the span tables designed for wind classification areas and deflection limits?

They are designed for five wind classification regions (N1 to N5). Serviceability limits specify dead load span/300, wind load span/150, with maximum deflection limited to 20mm.

Oct 28, 2026

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