PRODUCT DESCRIPTION & FEATURES
SAF 686 IBR is an angular trapezoidal fluted profile sheet. Its bold appearance makes it both attractive and practical. Since IBR was introduced to the South African market in 1958, it has become the most popular sheeting used in construction of commercial and industrial buildings. IBR is an abbreviation for Inverted Box Rob. The number "686" signifies the sheets effective cover width.
- The general shape and appearance of the trapezoidal flutes ensure that SAF 686 IBR is totally acceptable for use as roof and wallcladding. The deep and broad flutes of the SAF 686 IBR Type sheeting ensures excellent drainage characteristics.
- SAF 686 IBR is designed to provide the most advantageous load/span characteristics consistent with economy.
- SAF 686 IBR offers the end user the option of having stiffening ribs in the sheet which help to remove oil canning from the broad flute.
- SAF 686 IBR can be factory cranked, curved and bullnosed to a wide range of radii. For further details contact our Technical Department.
SAMPLE SPECIFICATION
Safintra 0,47mm thick, AZ 150 Zincal SAF 686 IBR Profile Roof Sheeting, fixed to intermediate steel purlins at 1900mm centres and to ridge and eaves purlins at 1650 centres, with 12x 65mm long class 3 metal self drilling screws at every second crest, at intermediate purlins and at every crest at eaves purlins side laps to be stiched at 500mm centres between purlins all in accordance with manufacturers recommendations.
The sheeting shall be SAF 686 IBR type profile as manufactured by Safintra Roofing. The profile shall be roll-formed with 5 trapezoidal ribs at 171 ,5mm, centres witha nett cover of 686mm. The rib height shall be 36,5mm and shall be fixed in accordance with the manufacturer's recommendations.
MATERIAL OPTIONS
| Zinc-Aluminium | Gauge(mm) |
| AZ150 G550 Mill Finish | 0.47 / 0.5 / 0.53 / 0.58 / 0.8 |
| AZ150 G550 Painted | 0.47 / 0.5 / 0.53 / 0.58 / 0.8 |
| Aluminium | Gauge(mm) |
| Aluminium Mill Finish | 0.7 / 0.8 |
| Aluminium G4 Colortech | 0.7 / 0.8 |
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.
| GAUGE | 0.47mm | 0.5mm | 0.53mm | 0.58mm | 0.8mm | 0.8mm |
| TYPE OF SPAN | ZINC ALUMINIUM |
ZINC ALUMINIUM |
ZINC ALUMINIUM |
ZINC ALUMINIUM |
ZINC ALUMINIUM |
ALUMINIUM |
| ROOFS | mm | mm | mm | mm | mm | mm |
| Single Span | 1 650 | 1 650 | 1 750 | 1 750 | 2 200 | 1 200 |
| End Span | 1 700 | 1 700 | 1 900 | 1 900 | 2 250 | 1 300 |
| Internal / Double Span | 1 900 | 1 900 | 2 100 | 2 100 | 2 600 | 1 500 |
| Cantilever (Unstiffened) | 200 | 200 | 260 | 260 | 360 | 200 |
| Cantilever (Stiffened) | 300 | 300 | 350 | 350 | 400 | 250 |
| SIDE CLADDING | ||||||
| Single Span | 2 100 | 2 100 | 2 300 | 2 300 | 2 500 | 1 600 |
| End Span | 2 400 | 2 400 | 2 600 | 2 600 | 2 650 | 2 100 |
| Internal Span | 2 600 | 2 600 | 2 700 | 2 700 | 2 900 | 2 100 |
| Cantilever | 300 | 300 | 400 | 400 | 450 | 300 |
| Approximate Mass / m2 | 4.9kg | 5.4kg | 5.8kg | 6.3kg | 8.6kg | 2.9kg |
LENGTHS & ROOF PITCH
When using IBR sheeting the recommended minimum pitch for roof slopes in excess of 15m is 7,5° and for slopes less than 15m is 5°. IBR sheeting can be ordered in any length, subject to transport limitations, upto 13,2m. Longer lengths require special transport arrangements.
TOLERANCES
A length variation range of +/-5,0mm, and width tolerance of +/-3,0mm are permissible.
