Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.
Steel roof batten span tables.
Embossed top flange provides slip resistance for roof fixers.
Your choice of batten size here will be determined by the weight and span of your metal roof panels.
Each product has different requirements for example batten spacing for 0 42bmt corrugated metal roofing needs to be no more than 1100 mm apart but batten spacing for 0 48bmt metal roofing can be up to 1600 mm apart.
It is intended that these tables will be used by engineers to assist in the preliminary design.
Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.
Refer to stratco for applications in higher wind conditions.
Span tables have been produced in combination with calculations derived from as nzs 4600 and using software developed by the centre for advanced structural engineering at the university of sydney.
Appendix c span tables c 1 introduction this appendix has been taken from the onesteelpublication design note no.
Stramit roof batten 0 48 0 48 mm g550 0 60 kg m stramit roof batten 0 55 0 55 mm g550 0 77 kg m stramit cyclonic roof batten 0 75 mm g550 0 98 kg m stramit ceiling batten 0 42 mm g550 0 37 kg m stramit wa ceiling batten 0 42 mm g550 0 34 kg m.
Based on the foot traffic requirements of as3623 the maximum span for stramit 0 48 roof batten is 900mm and stramit 0 55 roof batten is 1200mm.
For details of weights refer to about technical.
Note that spanman automatically calculates the weight of roof battens and adds it to the roof weight.
If additional fall protection is required on steel sheet roofs stratco ceiling battens may be fixed intermittently between stratco roofing battens giving a batten spacing no greater than 600mm.
Design of single span rafters in roofs in houses office buidlings schools and other structures.
Ideal for use as a roofing batten for residential steel or tiled roof topspan 40 is a 40mm deep batten offering a high strength yet light weight solution that won t shrink warp or twist.
Material specification material truecore roof batten hi tensile steel section is produced from hi tensile grade g550 az150 550.
It contains span tables covering various primary and secondary beam spans with common design floor loadings.
As 1170 and then determined the span required from the table below.
The top flange has an embossed surface to make it easier for the steel roofing screws to grip.
Steeline metal roof battens are a versatile and easy to use batten compatible with all roof.
Roofing battens are suitable for non cyclonic conditions up to and including w41 n3.
