San Francisco : Architect and Engineer, Inc · leaf 276
ed be-fore excavation was complete,anchor timber braces Detail of paired timber bracesfor steel piles. The 24-footvariation in street levels (be-tween corners at upper rightand lower left) determinedlengths and angles of braces Most reinforcing bars werespread around the timberbraces; a few pierced… … Union Square is 24 feet higher at the Powell-Post corner than at Stockton andGeary. The rise was gradual in the old park; in the new, a large level plazanecessitates this abrupt slope along Geary.
Architecture · Building
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