. Engineering and Contracting. rs Laborers Laborers A suction sand pump, a design of the local erence. The cost of this work was as follows Labor—Loading and unloading material, 63% days i Hauling material. 2 days Boring well No. 1, 107 days Boring well No. 2, 52 days well No. 3, 131% days Borini Boring well No. 4, 51% days Boring well No. 6. 117% days Erecting staging. 68% days Repairing derrick, 2 days Making boxes of test well soils, 4 of well boring apparatus 324,25 7,00 $2,:< Material: Lumber.
. Engineering and Contracting. rs Laborers Laborers A suction sand pump, a design of the local erence. The cost of this work was as follows Labor—Loading and unloading material, 63% days i Hauling material. 2 days Boring well No. 1, 107 days Boring well No. 2, 52 days well No. 3, 131% days Borini Boring well No. 4, 51% days Boring well No. 6. 117% days Erecting staging. 68% days Repairing derrick, 2 days Making boxes of test well soils, 4 of well boring apparatus 324,25 7,00 $2,:< Material: Lumber. 9,073 ft. at $ M $ Sheet iron casing, 14-in., new, 52lin. ft. at $ Sheet iron casing, 12-in., new, 172 lin. ft. at $ Sheet iron casing. 10-In., second-hand. 49 lin. ft. at $ Sheet iron casing. 8-in., second-hand. 36 lin. ft. at $ Store department expense J% of labor for use of tools Total $2, No. lin. ft. bored. —cost per $ sae, lATY ,f/>jec /ipe/.. S^or^ (7«e//. Vi> I 5^Q ^y>*i tfac/i/> fry t i a^c/ msZ/Ni 4 Sn xfvC/c t fC/ay II ^ i 5 i \.. tz: 25 X t ?90- cnt//,^-i> -//O- -J^— Sff— -/0— J Diagram for Recording Progress and Character of Test Borings. wake on every hand, and undermined one ofthe concrete piers of a large railroad bridgenear Sacramento, carrying away two deckplate girders spans of 100 ft. each. In viewof increased traffic conditions, improvementshad been contemplated before the disaster, butnow it was decided to take immediate stepstowards the construction of a double-trackstructure, a short distance down stream fromthe old bridge, thus effecting a reduction incurvature on the approaches at either test wells were bored to deter-mine the nature of the foundation for thenew piers. The original plans called for 6wells, but only five were bored. Stagingswere erected from the side of the old bridge,and the equipment used, whi
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