Saree. PROGRAM $ » STRUCTURES 3.1 Loading of Structures « SRI It will involve one cubicle To be done on Shot & only. identical to the one being used on Frenchman Flat for wk, a rectangular block of normal concrete, exterior dimensions 6 x 12 x 6. _—_ DELETED DELETED mm —_— —_ chanel The structure would be placed with the front face normal to the blast. It must be held fairly rigid, they do not want it to tunbdle or move appreciably with the blast, since the object is to measure loading on a rigid structure. It will be at ground level, will require an undere ground base. (It was agreed that the prints for the Knothole Project 3.1 structure could be used for the aboveground portion.) There will be about 40 channels of instrumentation on the structure, to measure pressurestime. A recording station will be required at some distance; Gilbert did not think it could be over 6000 ft from the cube because of cable length limitations. Doll is working up his requirements for the recording shelter, it is not thought it will have to be There is a possibility this may be tied in with Project 3.5; if there is instrumentation for the, trees, it might use the same recording station, Kingsley is not sure they can do this. They wanted sone pressure instrumentation among trees and there are none on these islands to the east of sero. The only trees are on the west end of Eniirikku. It was suggested that this cubicle might also be put on Enfirikku. Campbell has to build sane photo structures over there anyway, and if this means combining the recordin g on these two projects into one shelter, it would be an advantages 0 __Sf DELETED a | 7 ——— io noe probably be pat ore en lower pressure spot, the recording shelter will among rees 80 as to ha lengthe. The trees will have to be dupto the badd agent cable stripped up to the buildin they want a clean shook wave since to hit the oube, (Ogle though t ifthey wanted that, they should put the cube on the shore.) Doll will furnish inform ation on cable lengths and inside dimensions of £ 15a wi oad Set AND = it te ee + shelter. It 1s thought oesa recovery This willp pose probles | nee proposed. + because that filmof recording falleous. is