Computer · Concrete Technology
IS 456:2000 के अनुसार, सामान्य परिस्थितियों में जहाँ साधारण पोर्टलैंड सीमेंट का उपयोग किया जाता है, 4.5 मीटर तक फैले (spanning up to 4.5 m) स्लैब के प्रॉप्स (formwork props) को आम तौर पर कितने समय की समाप्ति के बाद हटाया जा सकता है?
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