The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 443
the shell being with-drawn a few feet at a time. By means ofthe rammed concrete, a perfect bond isobtained between the earth and the con-crete. In the last eighteen months the Port-land Concrete Pile and Equipment Com-pany have driven, if placed end to end,twenty-five miles of Portland… … Sectional view of the DunhamRadiator Steam Trap. The trap thats a sure cure for the prevalent ills in vacuumsteam heating. Distinctive — not only for the parts put in, butfor parts left out. Nothing to cause trouble. No Expansionplugs or floats and no water seal — no sliding contacts. Passes three…
Architecture · Building
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