His­toric Ruild­ing rises on wa­ter­front

Pier Øö struc­ture pro­tected from higher seas

San Francisco Chronicle - - BUSINESS REPORT - By Roland i

The trans­for­ma­tion of San Fran­cisco’s his­toric .ier 70 ship­yard into shops, of­fices and hous­ing comes with a heavy lift.

The .~ mil­lion­pound Build­ing 12, where work­ers toiled dur­ing World War II to build metal ship plates, had to be pro­tected from a dif­fer­ent threatb ris­ing seas. Developer Brook­field .rop­er­ties needed to lift the struc­ture 10 feet, shield­ing it from the an­tic­i­pated ef­fects of cli­mate change through 2100.

.repa­ra­tion took nine months, in­clud­ing dig­ging down 8 feet for new el­e­va­tor pits and the con­struc­tion of a new foun­da­tion. Brook­field worked with .lant Con­struc­tion and Bigge Crane I Rig­ging Co. to in­stall 136 hy­draulic jacks un­der the build­ing, which cov­ers an area big­ger than a foot­ball field. Sixty­eight tem­po­rary shoring tow­ers sup­port the weight of the build­ing.

The lift­ing process will take about two weeks and is ex­pected to be com­pleted this month.

The jacks work to­gether to lift the struc­ture ~± inches at a time, and the build­ing must be kept essen­tially flat as it rises, with no more than a half­inch height dif­fer­ence among seg­ments. The struc­ture also can­not move hor­i­zon­tally, which is only pos­si­ble by con­nect­ing the equip­ment to a com­puter that will pause work if there was too great of a dis­crep­ancy.

“Th­ese jacks are all part of the sym­phony,” said

Mike Tzortzis, vice pres­i­dent at .lant Con­struc­tion. “The com­puter is the con­duc­tor.”

The en­tire ren­o­va­tion and lift­ing of the build­ing, which was built in 191 by the Navy, will cost tens of mil­lions of dol­lars, with the lift costs to­tal­ing about 1~½ of the bud­get.

The build­ing is the cen­ter­piece of the $3.~ bil­lion .ier 70 devel­op­ment, an­other am­bi­tious in­vest­ment in San Fran­cisco’s south­east wa­ter­front. The plan is ap­proved for up to 2,1~0 hous­ing units, with 30½ of them af­ford­able, and up to 2 mil­lion square feet of of­fice and com­mer­cial space, along with 9 acres of new parks and open space. Con­struc­tion started in 2018 and will last through 2028.

The project is just south of the for­mer Mis­sion Bay rail yards that are now the site of the UCSF health care com­plex and the War­riors arena.

In 2022, the steel and con­crete Build­ing 12 is ex­pected to open to the pub­lic, with a planned mak­ers hall that could in­clude food pro­duc­ers and others of­fer­ing crafts for sale. The up­per two lev­els will have stu­dios and of­fices. The project has no tenant com­mit­ments yet.

Tim Ba­con, se­nior di­rec­tor of devel­op­ment at Brook­field .rop­er­ties, said the goal was to change an en­closed build­ing into a pub­lic space, while keep­ing the spirit of man­u­fac­tur­ing that fu­eled around­the­clock work on ships many decades ago. Mas­sive his­toric beams are vis­i­ble in­side the build­ing.

“Build­ing 12 has an in­cred­i­ble op­por­tu­nity, as the heart of this project, to take this cre­ative en­ergy and pump it out,” Ba­con said. “When peo­ple walk in, it’s re­ally awein­spir­ing.”

“We wanted to be trans­par­ent and open so peo­ple can look and touch and feel,” he said.

Other .ier 70 his­toric build­ings west of the wa­ter­front have been con­verted into of­fices for com­pa­nies in­clud­ing Gusto, uul and Uber, though the lat­ter two are shrink­ing their San Fran­cisco op­er­a­tions.

Brook­field and Hearst Corp., owner of The Chron­i­cle, are work­ing on an­other ma­jor San Fran­cisco project called ~M in South of Mar­ket. The project, which en­com­passes the news­pa­per’s of­fice build­ing, also in­cludes ren­o­vated his­toric build­ings.

The lift­ing of such a mas­sive struc­ture has few prece­dents in the Bay Area, said ohn Leven­tini, Bigge Crane I Rig­ging Co. project man­ager.

Other ma­jor lifts in­clude Google’s new roof struc­ture in Moun­tain View, which is part of an of­fice ex­pan­sion. An older ex­am­ple is the 1986 in­stal­la­tion of the Ch­er­nobyl Nu­clear .ower .lant sar­coph­a­gus, which con­tained ra­dioac­tive fall­out from the Rus­sian dis­as­ter, and was later re­placed by a dif­fer­ent struc­ture.

“There’s no job that’s re­ally iden­ti­cal,” Leven­tini said.

Paul Chinn / The Chron­i­cle

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Paul Chinn / The Chron­i­cle

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