Corrective Methods for Pressure Calculation Procedures in Drinking Water Supply for High-Rise Buildings (S+R+6) in Bamako

The drinking water supply (DWS) of high-rise buildings represents a major technical challenge in many African cities, particularly in Bamako. The pressure deficiencies observed in S+R+6 type buildings result not only from the limitations of the public distribution network but also from design, calculation, and execution errors in internal water supply installations. This paper analyzes conventional pressure calculation methods used in building drinking water supply networks and highlights their shortcomings in the Malian context. A corrective approach to pressure calculation at the most unfavorable draw-off point is proposed, incorporating the actual pressure downstream of the water meter, underestimated linear head losses, and hydraulic constraints specific to local networks. In addition, special emphasis is placed on the impact of the lack of qualification of workers and technicians involved in sanitary installations, a frequently overlooked but decisive factor in system failures. The results show that adjusting calculation parameters, combined with improved technical skills of installers, can ensure sustainable, comfortable, and economically efficient operation of drinking water supply systems in high-rise buildings in Bamako.