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Single-Storey Frames, Shells and Lightweight Coverings 227<br />

Crook bolt<br />

for fixing<br />

to Zed<br />

purlins<br />

Self-drilling<br />

self-tapping<br />

screw for<br />

fixing to Zed<br />

and multibeam<br />

purlins<br />

Square<br />

hook bolt<br />

for fixing<br />

to concrete<br />

purlins<br />

Claw bolt<br />

for fixing<br />

to Zed section<br />

spacers<br />

Figure 4.63 Fixings for fibre cement sheets.<br />

1.25–3.650<br />

Bold profile fibre cement sheet<br />

Cranked ridge sheet<br />

bolted over roof sheets<br />

Roof sheets secured<br />

with self drilling selft<br />

apping screws<br />

1.090<br />

Eaves closure<br />

piece bolted to<br />

roof sheet<br />

60 glass fibre<br />

insulating mat<br />

Roof sheets claw<br />

bolted to spacer<br />

Top of steel<br />

portal frame<br />

Steel underlining<br />

sheet<br />

Galvanised steel Zed section<br />

spacers between roof sheet<br />

and underlining<br />

1.050<br />

Galvanised multibeam<br />

purlin and sheeting rail<br />

Galvanised steel<br />

underlining sheet<br />

1.415–3.540<br />

Figure 4.64 Fibre cement sheeting with insulation and steel sheet underlining.

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