Market

Private Development Structural Engineering

Private development work often requires excavation support, specialty foundations, and coordination around dense urban conditions.

Relevant project examples

Structural engineering for private development projects involving deep excavations, below-grade parking, and constrained urban sites.

  • Wilshire Grand Center
  • 6th & Bixel
  • 1201 S. Hope
  • BLVD 6200 North and South

Portfolio

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011000 COVE WAYPrivate Development

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0210642 SANTA MONICAPrivate Development

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031200 CAHUENGAPrivate Development

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041200 STEVEN WAYPrivate Development

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051340 S. HILLPrivate Development

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061545 PINE STREETPrivate Development

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071550 EUCLIDPrivate Development

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081818 CHEROKEEPrivate Development

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091840 HIGHLANDPrivate Development

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10201 LEXINGTONPrivate Development

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112211 GLENDALEPrivate Development

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122225 SUNSETPrivate Development

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132922 CRENSHAWPrivate Development

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143223 WILSHIREPrivate Development

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15336 W. 7TH STREETPrivate Development

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163400 SUNSETPrivate Development

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173401 LA CIENEGAPrivate Development

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184037 EAGLE ROCKPrivate Development

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19404 4TH STREETPrivate Development

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20418 FARINGPrivate Development

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21433 VERMONTPrivate Development

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224519 ST. CLAIRPrivate Development

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23500 E COLORADOPrivate Development

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24508 E. SOUTH TEMPLEPrivate Development

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25510 OXFORDPrivate Development

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26515 PIONEERPrivate Development

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275420 SUNSETPrivate Development

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286200 VARIELPrivate Development

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296569 VAN NUYSPrivate Development

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30712 OLIVEPrivate Development

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31755 FIGPrivate Development

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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.

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32828 LILIANPrivate Development

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338377 BLACKBURNPrivate Development

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348740 LA TIJERAPrivate Development

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358777 WASHINGTONPrivate Development

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368TH & FIGPrivate Development

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378TH & OLIVEPrivate Development

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388TH & SPRINGPrivate Development

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399344 NIGHTINGALEPrivate Development

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40AVA HOLLYWOODPrivate Development

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41BRAND & WILSONPrivate Development

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42BROADWAY @ 4THPrivate Development

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43BROADWAY & THOMASPrivate Development

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44BROADWAY PALACEPrivate Development

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45COLUMBIA SQUAREPrivate Development

Legacy project record

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.

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46CRESCENT DRIVEPrivate Development

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47CULVER STEPSPrivate Development

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48CULVER STUDIOSPrivate Development

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49CUMULUSPrivate Development

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50CURSON TERRACEPrivate Development

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51DISNEY-ABC TELEVISION BUILDINGPrivate Development

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52EPICPrivate Development

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53FERRANTEPrivate Development

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54FULLERTON HEIGHTSPrivate Development

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55G-8Private Development

Legacy project record

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.

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56GOODLANDPrivate Development

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57GRAND AVENUEPrivate Development

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58GREENSTREETPrivate Development

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59GUERIN VALLEYHEARTPrivate Development

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60HANOVER HOLLYWOODPrivate Development

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61HARVARDPrivate Development

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62LUCENA ON COURTPrivate Development

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63MELROSE TRIANGLEPrivate Development

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64MONARCH COASTPrivate Development

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65OLD TOWN NEWHALLPrivate Development

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66PACIFIC & PINEPrivate Development

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67SARBONNEPrivate Development

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68SHORELINE GATEWAY & THE CURRENTPrivate Development

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69TEN50Private Development

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70THE DAIRYPrivate Development

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71THE DEPOTPrivate Development

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72THE RISE HOLLYWOODPrivate Development

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73THE RISE KOREATOWNPrivate Development

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74THE ROYPrivate Development

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75THE VILLAGEPrivate Development

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76VERANDASPrivate Development

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77VIBIANAPrivate Development

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78VIRGINIA APARTMENTSPrivate Development

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79VISTA MONTEREYPrivate Development

Legacy project record

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.

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80WAVERLY TERRACEPrivate Development

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81WHOLE FOODSPrivate Development

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