The topic of this masters is the measurement of normal sand loads on parallel walls in deifferent backfill conditions. Where only approach is made according to Janssen´s calculation method based on the balance of a thin horizontal layer of stored material. The very initial part of the paper is made theoretically in order to explain as closely as possible what this paper is about. We only analyzed the setup of the experiment, which is a very important part of our process, so that there are no significant errors in the results. And our material is commented according to the physical properties in order to obtain the necessary dana for the calculation of the volume of sand in the beaker, the perticle size distribution due to the partical content and pressure. Measurement of lateral pressure was made for 0° where when backfilling it was necessary to be careful not to touch the model when shaking the sand into the experimental model and that the sand falls in the middle of the experimental model, ie. in the middle of the experimental space filled with sand and at angle of 45° in order to achieve full backfilling od the model to the level of 1m, it was necessary to upgrade our model. Finally, we come to analysis of the results using diagrams that represent quite large daviations between our angles.