অব্যশ ভাইবা পরিক্ষার জন্য জানতে হবে

অব্যশ ভাইবা পরিক্ষার জন্য জানতে হবে........
ACI- American Concrete Institute

ASTM- American Society for Testing Materials

AASHO-American Association of State Highway Officials

AREA-American Railway Engineering Association

BNBC- Bangladesh Nation Building Code

BCI-British Concrete Institute

WSD-Working Stress Design

USD-Ultimate Strength Design

AASHTI-American Association
 of State Highway and Transportation Officials
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