beams in the standard manner. Gn tiing concrete for all the various pours, several test beam were made and sklippedto the field laboratory for tests. At the laboratory,the c~ing of the b$a~ was continued until time Of test.St 3, ?’9lL$ 219 Or 28 daysy depending On the Conditions required for control or correlationtith test cylinders. aach beam was broken twice under three-point beam loading and normally at successive intervals. Also, concrete cylinder nmlds mde of steel were distributed and standard c6ncrete test cylinders were made at the same time beams were .mde. These were shipped to the Oistrict Ehgineer, C. E., in Honolulu, T. R., for testing in compression. Results of these tests were correlated with the beam tests from the same pour. Tests in Concrete Laboratory, Honolulu, T. H.. To supplemmt the field laboratory tests, the facilities of the ~istrict Ihgineer, C. E., ~onol~lu, T. H., were nde available for nmking desired compressive tests of concrete cylinders and check tests on some of the aggregates. Compressive tests were nmde and results returned to the field laboratory for correlationwith beam test results and tabulation. ‘ Results. A complete record of concrete ties and corresponding strengthswas maintained during the construction period and a tabulation summary thereof is attached. Some 75 beams and 30 cylinders were tested. Because so little technical informationis available on coral concrete, it is believed that the test work accomplishedand the records maintained will prove to be of considerablevalue, especially if future tests of this nature are conducted in the Facific area, or if the 58 Section XVI .