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Shoring and Excavation Engineering Guides
Guides for excavation depth, support footprint, anchor rights, access, and construction sequence.
Shoring has to fit the excavation depth, nearby structures, property limits, access, and the work that follows it. These guides explain the decisions that shape a temporary support system while the project team is still comparing concepts or preparing for bidding.
Use the articles to organize drawings, geotechnical information, property constraints, and sequence assumptions before requesting a proposal. Related services and project records provide the next level of detail.
Planning guides
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Temporary Shoring and Permanent Retaining Walls: Why a Project May Need Both
A finished retaining wall and the shoring needed to build it serve different purposes. Learn how the two designs affect excavation, bracing, access, and construction.
Shoring Without Tiebacks: Rakers and Bracing Inside the Excavation
When property rights or underground structures restrict tiebacks, rakers and internal bracing may provide support. See how the alternatives affect construction space.
Deep Excavation Near LA Metro: Shoring Beside Tunnels and Transit Facilities
How nearby Metro tunnels, tieback limits, demolition, and construction access affect shoring for a Los Angeles basement, with the Wilshire Grand example.
Hospital Expansion Shoring in Orange County: Excavating Beside an Operating Hospital
How an active hospital campus affects excavation support: existing utilities, neighboring buildings, service access, and construction of the new basement.
San Diego Basement Shoring: Geologic Maps, Site Conditions, and Nearby Foundations
What San Diego hazard maps establish, and why basement depth, sloping grades, ground investigation, and nearby foundations still need site-specific review.
San Francisco Basement Excavation: Fitting Shoring, Sewers, and Access at the Street
How shoring, sewer connections, sidewalk use, and construction access compete for space at the frontage of a San Francisco basement project.
San Jose Basement Shoring: Ground Conditions, Excavation Depth, and Geologic Review
How changes in basement depth, ramps, and foundations affect San Jose excavation support, alongside site investigation and the City geologic review.
Sacramento Excavation Dewatering: Groundwater, Shoring, and the Discharge Route
How temporary water control relates to Sacramento excavation support, groundwater information, discharge permissions, and the permanent basement.
Dallas Retaining Walls Near Streets: The Excavation Needed to Build Them
A Dallas retaining wall needs room for its foundation, drainage, and construction excavation. Learn how streets and easements affect that work.
Fort Worth Basement Shoring: Tiebacks, Bracing, and Limited Space
How tiebacks, internal bracing, ramps, and temporary foundations change the space needed to construct a Fort Worth basement.
Austin Excavation Shoring: Working Beside Streets and Sidewalks
How underground support, utilities, and temporary street use affect Austin excavation shoring, including the difference between agreements and permits.
San Antonio Adaptive Reuse: Adding Below-Grade Space to an Existing Building
Adding a basement or pit to an existing San Antonio building? See how foundations, retained structures, and equipment access shape the shoring design.
Houston Basement Excavation: How Groundwater Affects Shoring
Groundwater affects shoring, water control, and basement construction. Understand how those designs connect on a Houston excavation.
Salt Lake City Basements: Liquefaction, Foundations, and Shoring
A liquefaction finding can affect a Salt Lake City basement project. Understand what the geotechnical study, foundation design, and shoring each address.
Ogden Infill Excavation: Building a Basement Beside an Existing Foundation
Nearby footings, limited anchor space, and narrow access can shape an Ogden infill basement. See where shoring and underpinning design meet.
St. George Foundations: When Soil Swells or Settles After Wetting
Expansive soils swell and shrink; collapsible soils can settle when wetted. See why the distinction matters for St. George foundations and excavation.
Park City Excavations: Fitting Shoring and Equipment Inside the Site Limits
A Park City building can fit its site while excavation equipment and shoring need more room. See how access, braces, soil handling, and site limits connect.
Orem Utility Pits: Shoring Around Utilities, Foundations, and Working Space
A utility pit needs room for support and installation as well as the finished chamber. See how nearby utilities and foundations shape an Orem excavation.
Downtown Los Angeles Excavation: Ramps, Cranes, and Temporary Platforms
See how ramps, a pedestrian bridge, drilling access, and temporary platforms shaped Cefali’s shoring at 755 Fig and Wilshire Grand Center.
Century City Redevelopment: Supporting Basement Walls While Floors Are Replaced
How Cefali supported retained basement walls at Westfield Century City while old floors were removed and new decks and foundations were built.
Hollywood Hotel Basements: How Parking Clearances Change Excavation and Shoring
Thompson Hotel’s three basement levels required excavation up to 46 feet. See how parking clearances, rakers, and floor changes shaped Cefali’s design.
Los Angeles Renovations: Shoring Beside Stairs, Tunnels, and Historic Buildings
How Cefali supported excavation around retained stairs, seating, tunnels, and historic buildings at USC Coliseum and Columbia Square in Hollywood.
Los Angeles Airport Excavation: Shoring Around Utilities and Foundations
Cefali’s work at LAX and Hollywood Burbank Airport shows how utilities, large foundations, existing structures, and construction access shape shoring.
Corona Retaining Walls: When Soil Nails Cannot Cross the Property Line
At Vista Monterey in Corona, property limits led Cefali to combine soil nail and soldier pile walls. See how reinforcement space affects wall design.
Los Angeles Property-Line Shoring: Tiebacks and Internal Bracing
When tiebacks cannot extend beyond a Los Angeles site, rakers and cross-lot braces may need space inside it. See Cefali examples at Intuit Dome and G-8.
Los Angeles Excavation Beside Existing Buildings: Shoring and Underpinning
See how nearby foundations and basements affected Cefali’s shoring at 755 Fig, G-8, and USC Coliseum, and when separate underpinning may be needed.
Los Angeles Shoring Bids: Excavation Depth, Access, and Property Constraints
What changes a Los Angeles shoring bid: basement depth, foundation geometry, tieback rights, Metro constraints, equipment loads, and construction stages.
Los Angeles Soldier Pile Shoring: Where Tiebacks and Braces Fit
How depth, neighboring basements, property rights, and access shape soldier pile shoring, with Cefali examples at 1201 S. Hope, G-8, and Intuit Dome.
Los Angeles Shoring Near Utilities: Anchor Paths, Pile Locations, and Clearance
Deep utilities and underground structures can change tieback angles, pile locations, and bracing. See Cefali examples from Hollywood, Downtown LA, and Burbank.
Deeper Excavation After Shoring Installation: Los Angeles Project Examples
At 6th & Bixel and Thompson Hotel, Cefali modified shoring for deeper excavation while retaining soldier piles. See what the engineering review involved.
Choosing a Shoring Engineer for a Los Angeles Excavation
Look for shoring experience with the conditions on your site: deep basements, nearby buildings, restricted tiebacks, construction access, and field changes.
Los Angeles Shoring Near Streets and Sidewalks: BOE Lateral Support Review
What Los Angeles BOE reviews for shoring beside the public way, including foundation plans, tieback depth, utilities, and dewatering information.
Los Angeles Excavation Dewatering: Wells, Pumps, and Shoring
How groundwater assumptions, wells, tanks, discharge routes, and settlement monitoring affect the space and design needed for Los Angeles excavation shoring.
Los Angeles Excavation Monitoring Beside Buildings and Transit
See how monitoring accompanied Cefali’s excavation support at Wilshire Grand, Century Plaza, and TEN50, from pile installation through deep excavation.
Shoring Terms Explained Through Los Angeles Projects
Understand the parts of a shoring system, where they fit around an excavation, and how Cefali used them on Los Angeles projects.
Shoring Costs in Los Angeles: What Affects the Price
See how excavation depth, tieback rights, access, utilities, and field changes affect shoring design and construction, with examples from Cefali projects.
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Documented project examples
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Review the site conditions and engineering work documented in these project records.
Wilshire Grand Center
Wilshire Grand Center required excavation support to be coordinated with phased demolition of an existing basement, a tower mat foundation extending 98 feet below Wilshire Boulevard, and nearby Metro tunnels.
900 Wilshire Blvd., Los Angeles, CA 90017
Intuit Dome
Cefali and Malcolm Drilling coordinated shoring around a court more than 30 feet below grade, construction access, large crane loads, and locations where tieback agreements were unavailable.
3930 W. Century Blvd., Inglewood, CA 90303
755 Fig
Excavation depths ranged from 25 to 97 feet, with heavy adjacent-building surcharges, internal bracing, underpinning, and temporary pedestrian-access support.
755 S. Figueroa St. (now Beaudry at 960 W. 7th St.), Los Angeles, CA
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