Hi all, Last July I asked your advice in building a Lehman. Thanks to the advice you gave me, I have completed the project. I will use Larry's equipment to start recording in the near future. Now I have to find a good location to place my Lehman. I have two options: to place it in a separate room or in the crawlspace = beneath the house. There is not much room in the crawlspace (1 meter) and the soil consists of sand and clay. Sometimes (after wet weather conditions over a long period of time) there is also the problem of water in it. I guess a pier will tilt due to the different soil conditions? What do you suggest? Thanks in advance, Marchal van Lare -Nieuwvliet, The Netherlands _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>