GENERAL INFORMATION
760 – Widek is also an angular trapezoidal fluted sheet and is similar in appearance to IBR profiled sheeting, the difference being the cover width of the sheet, and the depth of the flutes. IBR sheeting has a cover width of 686mm whereas 760 has a cover width of 760mm. The depth of the flutes on IBR sheeting are normally 36,5mm and the depth of 760 is 28,5mm. Using this type of sheeting has some cost saving advantages.
- The 760 profile giving a better cover width means a saving of ±10% on sheeting purchased thus a cost saving.
- To achieve the same coverage less sheets are required to be erected, thus saving time and labour.
- The advantage of using 760 in place of the sinusoidal corrugated profile is in its strength, that is to say the spanning capacity of 760 are greater than the corrugated profile thus requiring less purlins resulting in a cost saving.
- 760 Widek can be factory cranked, curved and bullnosed to a wide range of radii (see Bullnosing).
MATERIAL OPTIONS
| Galvanised Steel | Thickness (mm) | |||||||||
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0,40 0,50 | |||||||||
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0,50 0,60 0,80 | |||||||||
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Note 1 –
762 corrugated, IBR 686 and Widek 760 are supplied in a Z200 spelter
Note 2 –
Full Hard can be ordered in a Z275 and Z250 spelter. We offer 0,6mm and 0,8mm material in commercial quality, and 0,4mm and 0,6mm in Full Hard.
Note 3 –
Available in Mittal’s standard chromadek colour coated range. Special colours are available on request. Please contact our sales staff for further details.
Note 4 –
We profile certain grades of aluminium and stainless steel. Please contact our sales staff if you require further details.
LENGTHS & ROOF PITCH
760 can be ordered in any length up to 18 metres as per the customers requirements. The maximum length for road transportation is 13.2 metres and lengths over 13.2 metres require special transport arrangements. The minimum roof pitch when using 760 is 7,5°.
TOLERANCES
Length variation of 5,0mm and width tolerance of 3,0mm is permissible.
PURLIN SPACINGS
Purlin Spacings are dependant on both downward loading and negative suction loading caused by wind. Your engineer should be consulted to calculate your load (kn/m²) for your particular application. A broad guideline for Purlin Spacings is shown in the table below.
| GAUGE | MAXIMUM PURLIN | MAXIMUM GIRT | |||
| Spacing for Roof Covering | Spacing for Vertical Covering |
||||
| Double Span | Single Span | Cantilever | Cladding | Cantilever | |
| mm | metre | metre | metre | metre | metre |
| 0,50 (Full Hard) | 1,60 | 1,35 | 0,33 | 2,0 | 0,52 |
| 0,60 | 1,70 | 1,50 | 0,36 | 2,3 | 0,56 |
| 0,80 | 2,15 | 1,80 | 0,42 | 2,7 | 0,63 |
Double Span refers to a length of sheet being continuously supported over 3 or more purlins.
| MASS / METRE | LINEAR METRE / TON | |||||||
| Thickness | 0,4 | 0,5 | 0,6 | 0,8 | 0,4 | 0,5 | 0,6 | 0,8 |
| 760 | 2,976 | 3,717 | 4,464 | 5,952 | 336 | 269 | 224 | 168 |
760 COVERAGE TABLE
(Full width 737mm / Covering with 686mm)
| Sheets | 760mm | Sheets | 760mm | Sheets | 760mm | Sheets | 760mm | Sheets | 760mm |
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 |
760 1520 2280 3040 3800 4560 5320 6080 6840 7600 8360 9120 9880 10640 11400 12160 12920 13680 14440 15200 |
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 |
15690 16720 17480 18240 19000 19760 20520 21280 22040 22800 23560 24320 25080 25840 26600 27360 28120 28880 29640 30400 |
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
31160 31920 32680 33440 34200 34960 35720 36480 37240 38000 38760 39520 40280 41040 41800 42560 43320 44080 44840 45600 |
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 |
46360 47120 47880 48640 49400 50160 50920 51680 52440 53200 53960 54720 55480 56240 57000 57760 58520 59280 60040 60800 |
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 |
61560 62320 63080 63840 64600 65360 66120 66880 67640 68400 69160 69920 70680 71440 72200 72960 73720 74480 75240 76000 |