Private Development Structural Engineering

1000 COVE WAY

10642 SANTA MONICA

1200 CAHUENGA

1200 STEVEN WAY

1340 S. HILL

1545 PINE STREET

1550 EUCLID

1818 CHEROKEE

1840 HIGHLAND

201 LEXINGTON

2211 GLENDALE

2225 SUNSET

2922 CRENSHAW

3223 WILSHIRE

336 W. 7TH STREET

3400 SUNSET

3401 LA CIENEGA

4037 EAGLE ROCK

404 4TH STREET

418 FARING

433 VERMONT

4519 ST. CLAIR

500 E COLORADO

508 E. SOUTH TEMPLE

510 OXFORD

515 PIONEER

5420 SUNSET

6200 VARIEL

6569 VAN NUYS

712 OLIVE

755 FIG This project's excavation requirements compile many different shoring systems with many unconventional aspects. Cefali & Associates was contracted by Brookfield and later assigned to Malcolm Drilling. The excavation varied in depth from 25 feet to 97 feet. Heavy building surcharges, internal bracing schemes, and access and construction constraints are some of the project difficulties. The excavation was in a narrow lot, surrounded and surcharged by a concrete retail building and a 13-story concrete parking structure. Scouring through record drawings, iterating design options with the project Geotechnical and Structural Engineers, coordinating logistics with the contractors were continual efforts. A multi-row internally braced bulkhead, where tiebacks could not be used, was devised. The bracing foundation was laterally restrained by tiebacks and accommodated a two-stage brace installation and casting. Site access limitations required that a pedestrian bridge be built from the existing concrete parking structure over the excavation that acted as an exit. The bridge was supported from the shoring piles at the top of excavation, but also at a lower tier of shoring approximately 20 feet below. This lower tier of shoring increased the bridge height by 35 feet. An existing vault structure required underpinning and a unique corner-bracing scheme that resolved thrust with walers and horizontal tiebacks where an elevator shaft prevented ordinary tiebacks. Malcolm Drilling constructed a temporary construction platform that sat and pulled on the southern temporary shoring piles. Contractor logistics/access shoring was added to an interior temporary earthen ramp which allowed for early construction of portions of the building's foundations and tower crane installation.

828 LILIAN

8377 BLACKBURN

8740 LA TIJERA

8777 WASHINGTON

8TH & FIG

8TH & OLIVE

8TH & SPRING

9344 NIGHTINGALE

AVA HOLLYWOOD

BRAND & WILSON

BROADWAY @ 4TH

BROADWAY & THOMAS

BROADWAY PALACE

COLUMBIA SQUARE The Columbia Square redevelopment of the old Sunset CBS property took us 60 feet below the old media grounds. Narrow street widths required the tiebacks to extend below the streets from property line to property line. Deep utilities were skirted with steep anchors and long spans. Up to 5 rows of tiebacks were used. While The historic structures sat undergoing refurbishment, corner-braces and rakers were used help the contractor, Hathaway Dinwiddie, mitigate the network of 3 tieback rows used beneath the buildings in 3 directions.

CRESCENT DRIVE

CULVER STEPS

CULVER STUDIOS

CUMULUS

CURSON TERRACE

DISNEY-ABC TELEVISION BUILDING

EPIC

FERRANTE

FULLERTON HEIGHTS

G-8 Eighth and Grand in the urban core of DTLA, is 7 story mixed use development over a four-level parking basement totaling almost 500,000 square feet. This site sits adjacent to two existing historic buildings. With a depth of 40 feet, the site required tied-back and raker-braced soldier piles. The construction was complicated by the presence of a deep basement 20 feet from the basement wall. Raker braces had to be used because of the presence of the nearby basement wall. Additionally, the raker bearing pad had to be located in an awkward location immediately adjacent to the P4 wall line. This meant that the raker pad would have its support removed by the adjacent excavation. However, by utilizing a tied-back raker pad the P4 level could be excavated and constructed in the desired location and the required lateral support was supplied by a line of tiebacks well within the site.

GOODLAND

GRAND AVENUE

GREENSTREET

GUERIN VALLEYHEART

HANOVER HOLLYWOOD

HARVARD

HOSPITALITY Welcome to our hospitality section showcasing projects in the hospitality space. InterContinental Los Angeles - Downtown Fig + Pico Hampton Inn Tommie Hotel Hilton Inn Harbor View Hotel West Hollywood Edition Hyatt Place Hotel Whiskey Hotel Thompson Hotel Springhill Suites Selma Dream

INDUSTRIAL & LOGISTICS

LUCENA ON COURT

MELROSE TRIANGLE

MONARCH COAST

OLD TOWN NEWHALL

PACIFIC & PINE

PRIVATE DEVELOPMENT WILSHIRE GRAND CENTER GRAND AVENUE 8TH & FIG 755 FIG COLUMBIA SQUARE 3400 SUNSET VIBIANA THE RISE HOLLYWOOD THE RISE KOREATOWN SHORELINE GATEWAY & THE CURRENT VERANDAS FERRANTE BROADWAY PALACE 6TH & BIXEL VISTA MONTEREY

SARBONNE

SHORELINE GATEWAY & THE CURRENT

SPORTS & ENTERTAINMENT Welcome to our sports and entertainment section highlighting the engineering work we have performed for new and existing venues as they enhance their experiences. Intuit Dome Samuel Oschin Air and Space Center Coliseum Academy Museum of Motion Pictures Lucas Museum of Narrative Art

TEN50

THE DAIRY

THE DEPOT

THE RISE HOLLYWOOD

THE RISE KOREATOWN

THE ROY

THE VILLAGE

VERANDAS

VIBIANA

VIRGINIA APARTMENTS

VISTA MONTEREY The Vista Monterey project in the city of Corona is a community designed by Architects Orange. Sares Regis Group employed Cefali & Associates to design top-down style retaining walls for the project. These walls are comprised of soil nails and soldier piles. The tallest portions of the soil nail wall are 25 feet tall with 5 rows of nails that are limited in length due to the proximity of the property line. Soldier pile walls were used on either sides of the nail wall where easements for the nails were not permitted. The walls were built by Condon-Johnson. The city required that wall walls be decorative and so both styles of walls received a BoulderScape rock face.

WAVERLY TERRACE

WHOLE FOODS