Pounds. Weight of 1 cu. ft. earth, dust dry 84.0 “ “ 1 “ saturated earth 101.8 “ “ 1 “ moist loose earth 76.6 “ “ 1 “ loose material taken from test pits on the dam 80.0 “ “ 1 “ earth in place taken from the borrow pits 116.5 “ “ 1 “ earth material taken from test pits on the dam 133.0 Per cent. Percentage of moisture in natural earth 19 “ “ voids in natural earth 52 “ “ grit and gravel in natural earth 38 “ “ compression on dam over earth at borrow pit 16 “ “ compression on dam over earth in wagons 43 Degrees. Angle of repose of natural moist earth 44 Angle of repose of earth, dust dry 36 Angle of repose of saturated earth 23 CONSTRUCTION DETAILS.–The materials forming the bulk of the dam were hauled by four-horse teams, in dump wagons, holding 3 cu. yds. each. The wagons loaded weighed about six tons and were provided with two swinging bottom-doors, which the driver could operate with a lever, enabling the load to be quickly dropped while the team was in motion. If the material was quite dry, the load could be dumped in a long row when so desired. After plowing the surface of the ground and wasting any objectionable surface soil, the material was brought to common earth-traps for loading into wagons, by buck or dragscrapers of the Fresno pattern. In good material one trap with eight Fresno-scraper teams could fill 25 wagons per hour. The average length of haul for the entire work was about 1,320 ft. The original plans and specifications were adhered to throughout, with the single exception that the central puddle wall was not carried above elevation 1,160, as shown on Figs. 11 and 12, more attention being given to the inner face puddle. This modification in the original plans was made because of the character of the materials available and the excellent results obtained in securing an homogeneous earthen concrete, practically impervious. [Illustration: FIG. 11.–DIMENSION SECTION OF TABEAUD DAM.] The top of the embankment was maintained basin-shaped during construction, being lower at the axis than at the outer slopes by 1-10, to the height below the finished crown. This gave a grade of about 1 in 25 from the edges toward the center, resulting in the following advantages: