Installation guideline: end laps & fixing

For non asbestos fiber cement corrugated sheet, following guideline are recommended base in JIS standards for profile 130/35:

Minimum end lap                             150mm
Side lap                                             170mm (1.5 mountain)
Maximum unsupported overhang    300mm
Minimum roof pitch                         8°
 *Standard roof pitch                        17°
Span                                                  Center purling = 1
 *Maximum purlin spacing               985 mm
Fixing                                                4 bolts per sheet
                                                          (2 bolts per purlin per sheet)

Laying sequence

For non asbestos fiber cement corrugated sheet, prevailing wind direction to be taken into account and laying sequence are: 

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