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🪡 Post tension 

ከቃሉ ስንነሳ post - ድህረ ማለት ነው። concrete ከተሞላ በኋላ ብረቱን ስንወጥር post tension (ድህረ መወጠር) concrete ከመሞላቱ በፊት ደግሞ ሲወጠር pre-tension ይባላል።   ዛሬ ስለ post tension እናውጋ!

Post tension እዛው መስክ(site) ላይ የምናከናውነው የግንባታ ዘዬ ነው pretension ግን  በ precast ማምረቻ warehouseኦች ላይ ሚተገበር ነው።

በpost tension ጊዜ መጀመሪያ ብረት እናነጥፋለን(bottom bar) ኮለኖች አካባቢ lower reinforcement እናበጃለን ከዛም ኮለኖች አካባቢ punching shear reinforcement እናበጃለን (drop panel in exceptional case ካልሆነ አንጠቀምም) ከዛም chair bar (“ከበሌቶ”) ካረግን በኋላ strand እንዘረጋለን ከዛም በ side formwork በኩል  መወጠሪያ ብረቶቻችንን ካወጣን በኋላ anchorage እና grout vent እንዘረጋለን ከዛም እናጠብቃቸዋለን ከዛም top reinforcement (minimum reinforcement ለ shrinkage እና ለ temperature) ከዛም ኮንክሪት መሙላት ከዛም ያወጣነውን ቴንደን መወጠር ከዛም የተመዘዘውን መጠን መለካት ( measuring elongation) ከዛም የወጡትን የ strand ጫፎች መለካት ከዛም ክፍተቱን (void) በሲሚንቶ (cement screed) መሙላት።

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Civil Engineering
🪡 Post tension 

ከቃሉ ስንነሳ post - ድህረ ማለት ነው። concrete ከተሞላ በኋላ ብረቱን ስንወጥር post tension (ድህረ መወጠር) concrete ከመሞላቱ በፊት ደግሞ ሲወጠር pre-tension ይባላል።   ዛሬ ስለ post tension እናውጋ!

Post tension እዛው መስክ(site) ላይ የምናከናውነው የግንባታ ዘዬ ነው pretension ግን  በ precast ማምረቻ warehouseኦች ላይ ሚተገበር ነው።

በpost tension ጊዜ መጀመሪያ ብረት እናነጥፋለን(bottom bar) ኮለኖች አካባቢ lower reinforcement እናበጃለን ከዛም ኮለኖች አካባቢ punching shear reinforcement እናበጃለን (drop panel in exceptional case ካልሆነ አንጠቀምም) ከዛም chair bar (“ከበሌቶ”) ካረግን በኋላ strand እንዘረጋለን ከዛም በ side formwork በኩል  መወጠሪያ ብረቶቻችንን ካወጣን በኋላ anchorage እና grout vent እንዘረጋለን ከዛም እናጠብቃቸዋለን ከዛም top reinforcement (minimum reinforcement ለ shrinkage እና ለ temperature) ከዛም ኮንክሪት መሙላት ከዛም ያወጣነውን ቴንደን መወጠር ከዛም የተመዘዘውን መጠን መለካት ( measuring elongation) ከዛም የወጡትን የ strand ጫፎች መለካት ከዛም ክፍተቱን (void) በሲሚንቶ (cement screed) መሙላት።

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🪡 Post tension 

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