The following Easi – Joist span tables are to be used as a basic guide to achievable joist span for given depth and spacing, and should be used for estimating of feasibility only.
Due to variations in timber grades, load sets, support conditions and bearing widths, the tables are not suitable as a design tool. Please get in touch for more information and design assistance, we would be happy to advise and consult on what is best for your project.
United Kingdom Easi Joist Span Table
| WS200 easi-joist® | |||
|---|---|---|---|
| Joist depth | Joist centres | Chord dimensions | Maximum achievable span – EC5 UK |
| 195 | 400 | 72 x 35 | 4,675 |
| 97 x 35 | 5,025 | ||
| 122 x 35 | 5,275 | ||
| 147 x 35 | 5,500 | ||
| 600 | 72 x 35 | 4,025 | |
| 97 x 35 | 4,425 | ||
| 122 x 35 | 4,725 | ||
| 147 x 35 | 4,925 | ||
| WS200 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable span – EC5 UK |
| 219 | 400 | 72 x 47 | 5,175 |
| 97 x 47 | 5,550 | ||
| 122 x 47 | 5,850 | ||
| 147 x 47 | 6,075 | ||
| 600 | 72 x 47 | 4,675 | |
| 97 x 47 | 4,975 | ||
| 122 x 47 | 5,225 | ||
| 147 x 47 | 5,450 | ||
| WS250 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable span – EC5 UK |
| 254 | 400 | 72 x 47 | 5,650 |
| 97 x 47 | 6,025 | ||
| 122 x 47 | 6,350 | ||
| 147 x 47 | 6,625 | ||
| 600 | 72 x 47 | 5,075 | |
| 97 x 47 | 5,425 | ||
| 122 x 47 | 5,675 | ||
| 147 x 47 | 5,925 | ||
| WS300 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable span – EC5 UK |
| 304 | 400 | 72 x 47 | 6,275 |
| 97 x 47 | 6,700 | ||
| 122 x 47 | 7,075 | ||
| 147 x 47 | 7,375 | ||
| 600 | 72 x 47 | 5,625 | |
| 97 x 47 | 6,025 | ||
| 122 x 47 | 6,325 | ||
| 147 x 47 | 6,600 | ||
| WS400 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable span – EC5 UK |
| 417 | 400 | 72 x 47 | 7,200 |
| 97 x 47 | 7,650 | ||
| 122 x 47 | 8,000 | ||
| 147 x 47 | 8,275 | ||
| 600 | 72 x 47 | 6,400 | |
| 97 x 47 | 6,775 | ||
| 122 x 47 | 7,075 | ||
| 147 x 47 | 7,325 | ||
United Kingdom and Ireland Roof Easi Joist Span Table
| WS200 easi-joist® | |||
|---|---|---|---|
| Joist depth | Joist centres | Chord dimensions | Maximum achievable roof span – EC5 UK & Ireland |
| 195 | 400 | 72 x 35 | 5,375 |
| 97 x 35 | 6,050 | ||
| 122 x 35 | 6,575 | ||
| 147 x 35 | 7,050 | ||
| 600 | 72 x 35 | 4,875 | |
| 97 x 35 | 5,350 | ||
| 122 x 35 | 5,750 | ||
| 147 x 35 | 6,100 | ||
| WS200 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable roof span – EC5 UK & Ireland |
| 219 | 400 | 72 x 47 | 6,425 |
| 97 x 47 | 7,175 | ||
| 122 x 47 | 7,725 | ||
| 147 x 47 | 8,200 | ||
| 600 | 72 x 47 | 5,625 | |
| 97 x 47 | 6,200 | ||
| 122 x 47 | 6,650 | ||
| 147 x 47 | 7,075 | ||
| WS250 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable roof span – EC5 Uk & Ireland |
| 254 | 400 | 72 x 47 | 7,275 |
| 97 x 47 | 8,050 | ||
| 122 x 47 | 8,675 | ||
| 147 x 47 | 9,200 | ||
| 600 | 72 x 47 | 6,325 | |
| 97 x 47 | 6,950 | ||
| 122 x 47 | 7,475 | ||
| 147 x 47 | 7,950 | ||
| WS300 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable roof span – EC5 UK & Ireland |
| 304 | 400 | 72 x 47 | 7,650 |
| 97 x 47 | 9,325 | ||
| 122 x 47 | 10,025 | ||
| 147 x 47 | 10,650 | ||
| 600 | 72 x 47 | 6,900 | |
| 97 x 47 | 8,075 | ||
| 122 x 47 | 8,675 | ||
| 147 x 47 | 9,200 | ||
| WS400 easi-joist® | |||
| Joist depth | Joist centres | Chord dimensions | Maximum achievable roof span – EC5 UK & Ireland |
| 417 | 400 | 72 x 47 | 8,375 |
| 97 x 47 | 10,475 | ||
| 122 x 47 | 12,325 | ||
| 147 x 47 | 13,025 | ||
| 600 | 72 x 47 | 7,550 | |
| 97 x 47 | 9,450 | ||
| 122 x 47 | 10,550 | ||
| 147 x 47 | 11,150 | ||