INTRODUCTIONThe project consisted of calculating major and minor pressure losses. In the first experiment, he studies the minor pressure loss through pipes of different diameters and roughnesses, as well as through bends. The experiment was to get two different pressures at points 1 and 2 so we could get the pressure difference so we could calculate the friction which is also present in Darcie's pressure loss equation. However, in the second experiment the aim was to calculate the major losses due to both laminar flow and turbulent flow. This involved finding the friction factor which is also present in Darcie's equation. Additionally, these experiments determine several other factors such as the Reynolds number which is also essential in the Darcie equation. The friction factor was also determined using two other equations taking into account whether the flow is laminar or turbulent depending on the calculated Reynolds number. Additionally, the results were summarized in a table and two graphs that show the delta H to Re and f to Re. The importance of this project is to obtain the results of the friction factors and compare between the 2 consequences and to see the difference and the error. So in this report we will present the procedure of the 2 experiments and how it was done to obtain the result. After reading both pressures, calculations need to be done to achieve our goal from calculating speed, Reynolds number to achieving friction factors, assumptions can be made to aid our calculation. Finally, after achieving our objectives, the discussion and conclusion will be taken into account to clarify the results. loss of mind. These values ​​will be presented in Tables 4.1 to 4.4 (Appendix A). Experiment 2: The test carried out on laminar and turbulent flow, consists of connecting the power cable to the panel then opening the valve and starting the gravity pump by selecting the specific valve setting. After this, the flow must be adjusted to record the pressure loss. this procedure must be repeated for many values ​​taken. This experiment must be done through two valves V2 and V3. As in the previous experiment, different pressures must be read to be able to calculate the pressure loss ∆h and the Reynolds number Re= VD/υ (where V is the flow speed, D the pipe diameter and υ the viscosity kinematic (m2/s)). . After obtaining the calculation, the flow must be specified as turbulent or laminar so that friction can be obtained. The results will be presented in Table 5 (Appendix A).