Koyar Da Gidan Kirkiya Masu Karkashin Kirkiya
Kawarwari na Foundation Design
Kawarwari na foundation na transmission towers yana nufin gina bazu mai zafi da RCC, wanda ake gina don taimaka da duk abubuwa da kuma harsunan talabijin.
Abubuwan Harsuna Daban-Daban
Foundation na transmission towers yana bukatar da suka dace da abubuwan harsuna daban-daban kamar black cotton soil, fissured rock, da sandy soil, kila yadda yake bukata irin kungiyoyi mai sauƙi.
Fissured Rock Mai Zafi
Foundation a fissured rock mai zafi sun bukatar cutar haihuwa kamar undercuts da anchor bars don zafiya.
Muhimman Faktorai Don Zafiya
Yana da kyau a duba zafiya daidai da sliding, overturning, da buoyancy, tare da faktorai masu inganci don halayen normal da short circuit.
Takardun Inganci
Inganci mai zafi ya shafi a cikin abubuwan harsuna masu kalmomi don duba larazan da kuma haɗa tsakanin.
Kawarwari na Foundation na Transmission Towers a Abubuwan Harsuna Daban-Daban
Duk foundation zai yi ne da RCC. Kungiyoyin da kuma girman RCC structures zai yi ne kamar IS:456, kuma muhimmancin grade na concrete zai iya M-20.
Limit state method of design zai yi ne.
Cold twisted deformed bars kamar IS:1786 ko TMT bars zai amfani a matsayin reinforcement.
Foundations zai kawo da critical loading combination na steel structure da kuma equipment ko superstructure.
Inganci zai bayarwa a foundations idan an buƙata, musamman a abubuwan harsuna masu kalmomi kamar alkaline soil, black cotton soil, ko abubuwan harsuna masu laifiwa wa concrete foundations.
Duk structures zai dubawa don zafiya daidai da sliding da overturning a lokacin girma da kuma amfani a kan abubuwan load combinations daban-daban.
Idan an duba overturning, za a duba weight na harsuna da ke buga footing, amma ba za a ci inverted frustum na earth a foundation ba.
Base slab na any underground enclosure zai kawo da maximum ground water table. Minimum factor of safety na 1.5 against bouncy zai dubawa.
Tower da equipment foundations sun bukatar faktor masu inganci na 2.2 don halayen normal da 1.65 don short circuit conditions don duba sliding, overturning, da pullout.
