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You are worrying about the numbers and forgetting what the numbers mean. This is for the PE exam, so this is a very important topic to make clear in your mind. You solved the problem. You came up with an answer for what is required. You now have two options: Choose a small footing that your own solution just proved is too small for the requirements. Choose ...


2

Based on limited studies, PVC can degrade underwater due to chemical and bio-microbe attacks, it can lose weight and become more fragile after an extended time. But under the same attacks, the cement can also have degraded and lost the bond with the PVC water stop. It looks like this is the case as the photo is shown - a stretch of watermarks tracing the ...


2

Hydrostatic pressure is always looking for a tiny oppening, small scratches, nail holes, tiny tears, happened during the course of construction or due to wall settlement to find a way to infiltrate. There is only one expensive fix and that is to creat a space between the basement wall and interior wall with drainage on the bottom in between the two Walls to ...


1

Response time, more precisely called settling time is time after the system output settles to the new value after change in the input (in your case the output is reading of the thermometer and input is actual value) - more precisely time after the error between target value and actual doesn't exceed certain threshold, because the value will never reach that ...


1

First of all, the two methods you suggested (buying pad materials and spring+damper) are not necessarily different. Usually the different pad materials that can be bought, (mainly) modify the spring constant in the structure. Additionally, although there are methods of targeting specific frequencies, in most cases they are not very useful. The reason, is ...


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