Roof hook
1. I-ROVUST: yakhelwe ukubekezelela imimoya emikhulu nemithwalo esindayo, ukuqinisekisa ukuthi uhlelo lwelanga luhlala luqine ezimweni zezulu ezinzima.
2. Ukuvumelana: Ilungele izinhlobo ezahlukahlukene zophahla, kufaka phakathi uthayela, insimbi kanye nophahla lwe-asphalt, ukuzivumelanisa nezimo eziguquguqukayo ngezidingo ezahlukahlukene.
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I-4. Ukufakwa okulula: Inqubo yokufaka ilula futhi isebenza kahle, futhi ama-design amaningi awadingi amathuluzi akhethekile noma ukuguqulwa esakhiweni sophahla, ukunciphisa isikhathi sokwakha.
I-5. Design manzi