Station 69 - Reinforced Concrete Structure. The structure on Runit was not damaged, The structures at The Aomon Group and Engebi show two vertical cracks about 0.015 inch wide on the face-on wall and some very fine irregular cracks in the roof. There is no indication that the buildings failed structurally. The design of these structures is considered adequate, Stations 70, 71 and 72 - Reinforced Concrete Slabs, damage to these slabs; the design is considered adequate. There was no Stations 73 and 74 - Installations only, No Design. Station 75 - Reinforced Concrete Structure. these structures. Aaraanbiru. There was no damage to The design was adequate for Engebi and excessive for However, since the same design was used for both locations, no material saving of cost would have resulted from a lighter design for Aaraanbiru. Station 76 - Reinforced Concrete Structure. these structures. There was no damage to Design was adequate, possibly excessive for Piiraai. Stations 77, 78 and 79 —- Wood Frame Structures. There was no damage to stations 77, 78 and 79 on Kirinian and Bokonaarappu and to Station 79 on Runit. Design is adequate for these structures, possibly excessive for station 79 on Bokonaarappu. Station 80 - Reinforced Concrete Slab. slabs. The design was adequate. There was no damage fo these stations 81, 82, 83 and 84 - Reinforced Concrete Slab. damage to these slabs. The design was adequate. There was no Stations 90, 91, 92, 93, 95, 42) and 422 - Steel Box with Top Set Flush with Concrete. There was no damage to these boxes. The design was adequate. station 100 - Reinforced Concrete Structure. These structures showed no evidence of failure due to blast effect. A certain amount of cracking was in evidence at Engebi and a very small amount at Runit and The Aomon Group; however, none of this cracking indicates a structural failure. is believed that the design is adequate, but not excessive, It The quality of construction was evident throughout the structures. Concrete was well consolidated; there was no exposed reinforcement; forms were true; and there was no evidence of patching after forms were stripped. All concrete rang true when struck with a hammer. There was no evidence of settlement or cracking of building foundations, columns, pilasters, or equipment blocks. Strain gauge tests on engine crank shafts at all sites after the blasts indicate that there is no misalignment. Due to the water seal and earth fill, it was impossible to inspect the outside roof, faceon and side-on walls of these structures. 5-310