Hollow concrete blocks (HCBs) were becoming an increasingly prevalent material for housing construction. The demand for this product is high across the earthquake affected districts due to various reasons. [Size of HCB Building Units:] Buildings being built are typically constructed in the sizes of two roomed, three roomed and four roomed with and without verandah and CGI roofing.
Manual
https://www.hrrpnepal.org/hrrp-reference-library/government-of-nepal
2019