Related legal documents: Circular 01/2021/TT-BXD on QCVN 01:2021 – National Technical Regulation on Construction Planning replacing Circular 22/2019/TT-BXD on QCVN 01:2019/ BXD.
QCVN 01:2021/BXD issued together with the guiding circular No. 01/2021/TT-BXD dated May 19, 2021 has a very noticeable change related to construction planning and impacts on investors:
Net building density
Net construction density is the ratio of the land occupied area of the main architectural works to the area of the whole land lot (excluding the occupied area of outdoor works such as decorative miniatures, swimming pools, yards, parking lot, sports ground, security house, entrance and exit, roofed basement ventilation systems and other technical infrastructure works).
Compared with the current regulations, adding “up and down entrances, roofed basement ventilation systems are not included in the land occupied area of outdoor buildings.”
The maximum net construction density of a land lot for building factories and warehouses is 70%. Land for factory construction with more than 05 floors used for production, the maximum net construction density is 60%.
With the redefining of the net construction density as well as the fact that the construction density does not depend on the height of the building, this is really a knot that is untied for the investor and the factory designing general contractor. With the new regulation, investors can make the most of the factory’s land fund to build production workshops by increasing the construction area and increasing the number of construction floors to meet the capacity of the production line.
Density of trees in the factory
However, in QCVN 01:2021/BXD, there is no change compared to QCVN 01:2019/BXD in terms of density of trees in the factory. Accordingly, in factory construction, the minimum percentage of land use for planting trees is still of 20%.
With no change in the plant density ratio, the above allowed building density also causes difficulties. And the area for roads must meets the demands of mandatory setbacks, roads and warehouses.
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