Roof Purlin Spacing Nz

This is a heavy roof so the 1200 mm column on the right side of the table is excluded it only applies to light roofs.

Roof purlin spacing nz.

Roof pitch suntuf polycarbonate sheeting will provide correct run off of rainwater when the roof pitch is 10 or greater. In areas exposed to high wind spacings should be reduced to 750mm centres. Fastener patterns on nzs 3604 buildings should be consistent throughout the roof excluding top and bottom rows. For walls nogging spacings should be no more than 1200mm.

In terms of purlin spans and girt spacing it is necessary to follow due process. The introduction of nzs 3604 in 1978 gave specific requirements for rafter purlin and ceiling joist sizes and spacing. Use noise stop tape on all battens. Sheet roof spacing mm n5 wind rafter size 600 760 900 1000 1200 66 x 42 1000 890 820 780 710 90 x 42 1390 1210 1120 1060 970 138 x 42 2200 1900 1710 1620 1480 185 x 42 2770 2410 2160 2020 1840 230 x 42 3130 2730 2460 2300 2070 280 x 42 3320 2900 2610 2440 2180 n6 wind sheet roof.

Step 1 rafter spacing choose rafter spacing from table 10 1 the options are 480 600 or 900 mm. Purlins and stud spacing suntuf polycarbonate sheeting should normally be fixed to purlins or studs erected at a maximum of 900mm centres. Polycarbonate roofing page at www alsynite co nz purlin spacings for roofing purlin spacings refer to the table on this page. Purlin splice 90 x 35mm block fixed to chord or rafter with 4 x 75mm nails cpc40 cpc40 type c 1 screw to each purlin type d e 1 nail plus 1 screw to each purlin ct200 lumberlok ceiling tie ct200 bend over purlin 4 x lumberlok product nails purlin batten gang nail lumberlok bowmac www miteknz co nz mitek new zealand limited.

Purlin batten purlin batten fixing type d 3 45kn 2 blue screws or 2 skew nails plus 2 wire dogs for purlin on edge fixing type c 2 4kn purlin batten 1 blue screw 2 nails fixing type b 0 8kn purlin batten fixing type a 0 55kn 1 nail purlin batten note. The minimum pitch for this profile is outlined elsewhere within this literature. If a design quotes wind speed in m s ask for a roof plan showing design loads and purlin spacing apply serviceability loads for pierce fastened products ultimate loads for clip fastened profiles. 1 2 it should be noted that timber purlins for metal roof cladding are minimum 70mm x 45mm h1 2 18 moisture content and that battens used previously for tiles must not be used.

On site framing of gabled roofs generally used couple close construction that is where each pair of rafters are tied at their bases by ceiling joists to prevent spreading. This is a skillion roof so consider roof cladding. Purlins up to 1200mm spacing must be fixed with a 1 10g 80mm long purlin screw minimum or a pryda purlin strap bs 70. Heavy skillion roof rafter span 3 000 m.