To apply a new waterproofing membrane on top of an old bitumen waterproofing membrane, the surface of the old membrane should be thoroughly cleaned and prepared. Any loose debris, dirt, or old adhesive should be removed to ensure proper adhesion of the new membrane. Once the surface is clean, a primer should be applied to promote adhesion between the old and new membranes. Finally, the new waterproofing membrane can be installed according to the manufacturer's instructions, ensuring that it is properly sealed and bonded to the old membrane to provide effective waterproofing. **

Yes, this sample is incorrect. The sample provided is not a complete sentence and lacks clarity. It does not provide enough information or context to understand the situation fully. A correct sample would need to be more specific and detailed to effectively address the question or issue at hand. **

A blind sample is a sample that is tested without the tester knowing the identity or characteristics of the sample. This is done to eliminate bias and ensure the accuracy of the test results. On the other hand, a reference sample is a known sample that is used as a standard for comparison in a test or analysis. It provides a baseline for comparison and helps to ensure the accuracy and reliability of the test results. **

A comparison sample is a group of individuals who are similar to the person being assessed, such as individuals with similar demographics or characteristics. This sample is used to compare the individual's performance or characteristics to those of a similar group. On the other hand, a norm sample is a representative group of individuals from the general population, used to establish average performance or characteristics for a particular measure or assessment. The norm sample provides a standard against which an individual's performance or characteristics can be compared. In summary, a comparison sample is specific to the individual being assessed, while a norm sample represents the general population. **

A utility knife or a sharp blade is typically used to cut the waterproofing membrane. It is important to use a sharp tool to ensure clean and precise cuts, which will help in achieving a proper seal and prevent water leakage. Care should be taken to avoid damaging the underlying surface while cutting the membrane. **

A sample count is a method used to determine the number of items in a population by examining a smaller subset or sample of that population. This technique is often used in statistical analysis when it is not feasible to examine every single item in a population. By analyzing a representative sample, researchers can make inferences about the entire population based on the characteristics of the sample. The sample count helps to estimate the total count or size of a population with a certain level of confidence and accuracy. **

A control sample is a sample that is used as a standard of comparison in an experiment. It is a sample that is not exposed to the experimental treatment or variable being tested. By comparing the results of the control sample to the experimental sample, researchers can determine the effect of the treatment being studied. Control samples help ensure that any observed changes are due to the treatment being tested and not to other factors. **

A total sample refers to the entire population or group being studied in research. It includes every individual or element that meets the criteria for inclusion in the study. By analyzing the total sample, researchers aim to draw conclusions that are representative of the entire population, rather than just a subset of it. This approach helps to ensure the generalizability and reliability of the study findings. **