INTRODUCTIONThe project concerned the calculation of major and minor pressure drops. In the first experiment we investigate the lower pressure losses through pipes of different diameters and roughness, even through elbows. The experiment was to get two different pressures at points 1 and 2 so that we could get the pressure difference so we could calculate the friction which is also present in the Darcie pressure drop equation. However, in the second experiment, the aim was to calculate the major losses resulting from both laminar and turbulent flow. The point was to find the friction factor that is also present in the Darcie equation. Furthermore, these experiments determine many 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 according to the calculated Reynolds number. Furthermore the results have been summarized in a table and two graphs showing the delta H versus Re and f versus Re. The importance of this project is to get the results of the friction factors and compare between the 2 consequences and see the difference and the error. Therefore in this report we will introduce the procedure of the 2 experiments and how it was done to obtain the result. After reading the two pressures, we must do the calculations to achieve our goal from the calculation of the speed, to the Reynolds number to arrive at the friction factors, hypotheses can be made to facilitate our calculation. Finally, once our objectives are achieved, discussion and conclusions will be considered to clarify the results. EXPERIMENTAL METHODS Experiment 1: The test performed on the head loss investigation was carried out...... halfway through the paper ...... d the head loss. These values ​​will be shown in Tables 4.1 to 4.4 (Appendix A). Experiment 2: The test performed on a laminar and turbulent flow consists of connecting the power cable to the panel then opening the valve and starting the pump managing gravity by selecting the specific valve setting. Subsequently, the flow rate must be adjusted to record the pressure drop. 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 it is necessary to read a different pressure in order to calculate the pressure drop ∆h and the Reynolds number Re= VD/υ (where V is the flow velocity, D the tube diameter and υ the kinematic viscosity (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 shown in Table 5 (Appendix A).