Timber Decking Span Tables | Marley Eternit Decking

Timber Decking Span Tables

Technical Specification 1

General Use, based on BS 5268.

There is no specific standard for Timber Decking. Marley Eternit has worked with BM TRADA to develop a series of technical data sheets for timber deck boards. BS 5268-2 Structural use of Timber has been withdrawn and replaced by EN 1995 Eurocode 5 Design of Timber Structures. However, it is recognised that for a period of time designs to BS 5268 are still accepted.

Assumptions

The assumptions used are the original ones that Marley Eternit derived from BS 6399:part 1 and are very similar to the assumptions made by the TDCA in their "Timber Decking - the Professional Manual, edition 2" for commercial decks. These are 5kN distributed load and a 1.4kN concentrated load with a mid span maximum deflection of 3mm. this deflection is derived from Approved Document M of Building Regulations so that there is a minimal chance of a trip hazard. It must be noted that unlike the Eurocode calculations there is NO alliance for creep within these tables.

Technical Specification 2

General Use and Light Access Walkaways, based on Eurocodes 1 and 5.

There is no specific standard for Timber Decking. Marley Eternit has worked with BM TRADA in interpreting Eurocode 5 with respect for timber decks and has developed a series of new span tables using assumptions derived from the National Annex NA to BS EN 1-1-1:2002 Eurocode 1; Actions on Structures.

Assumptions

For general use (A1) and light duty access walkways (C36) the point or concentrated load is 2.0kN and the distributed load is set at 5.0kN/m².

Technical Specification 3

Balconies, based on Eurocodes 1 and 5.

There is no specific standard for Timber Decking. Marley Eternit has worked with BM TRADA in interpreting Eurocode 5 with respect for timber decks and has developed a series of new span tables using assumptions derived from the National Annex NA to BS EN 1-1-1:2002 Eurocode 1; Actions on Structures. There is an increasing demand for the use of timber deck boards for balconies and Marley Eternit has designed for these specifically.

Assumptions

For Balcony use (A5, 6&7) the point or concentrated load is 2.0kN and the distribution load is set at 5kN/m².

Technical Specification 4

Restaurants and Dinning Areas, based on Eurocodes 1 and 5.

There is no specific standard for Timber Decking. Marley Eternit has worked with BM TRADA in interpreting Eurocode 5 with respect for timber decks and has developed a series of new span tables using assumptions derived from the National Annex NA to BS EN 1-1-1:2002 Eurocode 1; Actions on Structures. There is an increasing demand for the use of timber deck boards for restaurants, outdoor eating and dinning areas and Marley Eternit has designed for these specifically.

Assumptions

For restaurant and dining area use (C11) the point or concentrated load is 3.0kN and the distributed load is set at 5kN/m².

Technical Specification 5

Medium duty walkways and shopping areas, based on Eurocodes 1 and 5.

There is no specific standard for Timber Decking. Marley Eternit has worked with BM TRADA in interpreting Eurocode 5 with respect for timber decks and has developed a series of new span tables using assumptions derived from the National Annex NA to BS EN 1-1-1:2002 Eurocode 1; Actions on Structures. There is an increasing demand for the use of timber deck boards for medium duty walkways and Marley Eternit has designed for these specifically.

For medium/ general duty walkway use (C37) and Shopping areas (D1&D2) the point or concentrated load is 3.6kN and the distributed load is set at 5kN/m².