The Loren at Lady Bird Lake topped out this month in Austin, TX with general contractor Hoar Construction. Located on the south end of the Lamar Blvd. Bridge the building features panoramic views of the lake and the downtown skyline. Two levels of below grade parking with 148 stalls and nine levels above grade make up the 290,339gsf cast-in-place building. The development has both a residential and hospitality component with 24 apartment style units and 108 hotel rooms under one roof. Residents and guests share the same amenities including a 24-hour concierge service, gym, spa and rooftop pool on level eight.
The design called for spread footing foundations and A-Frame shoring by Peri Formwork was used for the cast-in-place basement walls. Typical levels are 10ft 6in floor-to-floor with the penthouse and roof decks standing 13ft 6in and 14ft respectively. Typical deck pours averaged 12,500 and were poured every 6 days. Over the course of nine months Largo will have poured 15,119 Cubic Yards of concrete. Designed by architects Rhode Partners, Inc. and Viewtech, Inc. structural engineers, the development is scheduled to be open during the Spring of 2022.
At 5AM on May 22, Cemex and Associated readymix trucks began delivering loads to the Courthouse Commons jobsite in downtown San Diego. The site is caddy-corner from the Central Courthouse between W. Boardway and W. C Street. Once on site, five truck mounted boom pumps moved the readymix 50 ft. below street level to the foundation. Pumps ranged in size from 46 meters to 61 meters and were lined up along Union and Front Streets. The deepest part of the foundation was 14.5 ft. deep at the elevator pits. Pumping at a peak of 600CY/hour, the pour lasted 11 hours with the last finisher going home around 8PM. In total 5,450 cubic yards were placed by a 30-man placing crew, 20 finishers, 10 pump operators and a support group of 40 individuals.
Looking ahead, the next major milestone will be the placement of another mat foundation of 6,650CY on July 5. If all goes according to plan general contractor Holland Partners expects concrete to top out in April 2023. The project is designed by Carrier Johnson architects and Bryson Markulim Zickmantel structural engineers. The building is 44 total levels including five levels of below grade parking and the roof deck. Commercial retail space is located on street level with the following seven levels dedicated to office space. The next 28 levels will hold 431 residential units, 87 of which are subsidized for low income renters. Once completed the Courthouse Commons will be among the top five tallest buildings in San Diego.
Along the Harbor freeway between Temple and Beadry, the 10-acre Ferrante development is scheduled to top out early next month. The 1,500 unit residential complex is the latest endeavor by mega-developer Geoff Palmer who is known for buildings designed with Italian Renaissance architecture. The building features 30,000sf of commercial space at street level and 187,000sf of amenities including gyms, pools, tennis and basketball courts, open courtyards and even a karaoke room. With over 1million sq. ft. of elevated deck this three level parking podium was broken into three phases with the first phase on the north side scheduled to open during the Summer of 2021.
On average Largo poured a 16,000sf elevated deck twice a week over the course of 20 months. A shoring and tables forming system was used for the decks and a combination of three placing booms and a 58m truck mounted boom pump were used to place the readymix. In total Largo will have placed 76,000 CY will have been placed onsite. Developer and general contractor GH Palmer, Oakes Architects and VCA Structural Engineers plan to have all three phases complete by the end of the year.
The Landmark II residential tower topped out this month along Wilshire Blvd. with general contractor Matt Construction. Looking south from Wilshire Blvd. the new building stands behind the Landmark II commercial office building between Granville and Stoner Avenues. The 35 level above grade structure holds 376 units with four levels of below grade parking for 421 cars.
The parking levels tie into an existing structure which had to remain operational throughout construction. Underpinning, or the process of strengthening the foundations of an existing structure, was part of seismic retrofit of the parking levels which was necessary to re-route traffic and create temporary access. Demolition of existing beams to connect the two parking structures included the de-tensioning of PT cables, and the installation of micropiles and an internally braced raker system.
The walls of the two cores are the primary lateral resisting system which were formed with EFCO Plate Girders to maximize the tie spacing. The elevator core formwork is supported by a self-climbing Power Tower PT-100 system. For the elevated decks Largo chose to use PERI perimeter tables with titan shoring for the handset portion of the decks. Gensler and Saiful Bouquet are the architect and structural engineer for the project which is scheduled to open during the Fall of 2021.
The St. Teresa’s of Calcutta affordable housing project topped out on the corner of 14th & Commercial in downtown San Diego this month. Largo worked with Level 10 Construction on the 15 level high-rise and three level podium development which holds a total of 407 units, 270 of which will be used specifically to address homelessness. The 18′ high ground level will house commercial and retail space with a fitness area, community room, management offices, and courtyard on the second level. The superstructure is made up of 17,563CY of concrete creating 328,514sf which was poured over the course of nine months.
Limited laydown area and the adjacent Covid-19 vaccination site added to the logistical challenges of the downtown environment. A Peri core-wall system which sat on embeds and did not rely on trailer panels for support was used to form the core. This allowed our crews to close the entire core the day before the deck was complete and pour both vertical and horizontal elements at the same time. During the typical levels our teams were able to pour an 18,000sf deck every week to meet the aggressive schedule.
Named in honor of Mother Teresa the development’s two main partners are the San Diego Housing Commission (SDHC) and Father Joe’s Villages, Chelsea Investment Corporation. The development will remain affordable for 55-years for San Diegans with low-income or who are experiencing homelessness. Designed by Joseph Wong Design Associates and BWE Structural Engineers, the development is scheduled to be open during the third quarter of 2021.
Two residential podium projects topped out in Mountain View, CA this month with the Prometheus Real Estate Development Group. The Tillery is located along Villa Street and The Hadley is two miles south along E. Evelyn Avenue., with both properties backing up to the Central Expressway.
The Tillery features two levels of below grade parking and a podium deck at street level for a total of 256,856gsf. The parking area holds 318 stalls and the four levels of wood frame above hold a total of 226 units. Largo is working with general contractor SBI Builders, BDE Architecture and Nelson Structural Engineers who plan to have the building open during the third quarter of 2021.
The Hadley Apartments for general contractor Palisade Builders have a similar configuration with two levels of below grade parking with a podium deck and wood framed residential above with a total of over 410,000sf. When complete the complex willhold 679 parking stalls and 471 residential units. The project is expected to be complete during the forth quarter of 2021 with BDE as lead architect and Nelson Structural Engineers.
The American Concrete Institute (ACI) gave the “Decorative Uses of Concrete Construction” award to the Linea Apartments in Los Angeles, CA. Click here to view a list of all the projects which received recognition at this years virtual event and check out the Linea project video below:
The Linea mid-rise luxury apartment complex is centrally located along Sepulveda Blvd. between Pico and Exposition in West Los Angeles. The 545,000gsf development features two levels of below grade parking, three levels of retail and commercial space starting at street level, and residential units from the podium deck up. A total of 911 parking stalls are provided for the 566 market rate and 66 affordable housing units. Residential space is spread out across one ten level and three five level structures rising from the podium. The boomerang shaped nine level structure is located toward the back of the podium and has post-tensioned slabs and a concrete moment frame with both upturned and downturned beams. The five level buildings are light gauge metal stud structures facing Sepulveda Blvd.
The 125,000sf of slab on grade area starts two levels below grade with 1,550CY of shotcrete applied to the perimeter and radial ramp walls of the subterranean parking levels. Due to rebar congestion shotcrete crews utilized a “hybrid method” to place the pilasters in the perimeter basement walls. This is accomplished by forming the pilaster with Stayform then pouring and vibrating readymix into the form without the air component. The Stayform is then removed and the surface is pneumatically applied and finished in the traditional shotcrete fashion. 14,000sf of 22’ tall decks are also featured in the podium structure where teams used Titan XL 625 posts for shoring. During the height of construction in the J-shaped shaped podium Largo had two boom pumps onsite utilizing four masts.
The podium plaza level features a landscaped courtyard with two pools and communal outdoor dining and recreation areas. The modern outdoor living space is decorated with 10,000sf of architectural board-formed concrete parapet walls and planters. The exposed concrete look is carried on to the courtyard roof deck on level ten of the cast-in-place structure, where more concrete benches and board-formed planters can be found lining another pool, a spa, daybeds and cabanas.
Designed by Van Tilburg, Banvard & Soderbergh Architects with Englekirk providing the structural engineering, the development opened during the summer of 2020. The penthouse currently rents for over $15,000/month with impressive views of the I-10 and I-405 interchange. Overall, Largo Concrete placed 53,200CY of concrete over 11 months. 73 elevated deck pours were accomplished over a 9.25-month duration averaging a pour ever 2.7 working days.
The American Concrete Institute (ACI) recently awarded the Ivy Station project the award for Outstanding Performance in Design and Engineering. Click here to view a list of all the projects which received recognition this year and check out the Ivy Station project video below:
The new development sits adjacent to the Culver / Venice Metro Line Station in Culver City, CA along Venice and Jefferson Blvd. This city-block-wide transit-oriented development is a true mixed-use project with a commercial office space, hospitality rooms and residential units with a retail plaza at street level. Each component sits atop a three level below grade, 607,000sf parking podium housing 1,538 stalls, 300 of which are dedicated to Metro riders.
The versatility of the podium is also depicted with three different building types rising from the 218,000sf plaza level lined with space for retail and food stores. The 148-room hotel utilizes structural steel while the 200 residential units are spread across wood frame. Both components are five stories tall sitting atop an elevated deck of concrete while the entire commercial building is cast-in-place concrete.
Over 23,600CY was placed for the 236,700sf mat foundation ranging from 17” to 60” thick three levels below the street. Largo utilized their own powerful City Pumps to hose the readymix hundreds of feet from the street down to the jobsite. Nearly 3,000CY of shotcrete walls were pneumatically placed around the perimeter of the basement parking levels. Interior structural walls up to 3’ thick enclose staircases and radial ramps giving pedestrians and vehicles access to the below grade parking.
At the plaza level, structural columns switch from rectangular to circular which juxtapose the angular shaped decks. Typical levels have a 13’8” floor-to-floor height with the first and fifth levels at 15’. The concrete columns, interior walls and soffits remain exposed throughout the commercial building to usher views outward to the street and plaza with a grand entrance off Venice reaching 28’5” in height. Largo worked with general contractor Bernards, KFA architects and Englekirk structure engineers to place 81,500CY of concrete over 14 months.
Largo Concrete topped out at the Natiivo tower in downtown Austin, TX earlier this month. Located at the edge of the rapidly growing Rainey Street District, the 442,668gsf building is 33 levels all above grade. The first nine levels of the building are dedicated to parking with 24 levels of residential above holding 248 units.
All units come fully furnished with hotel licensing and can be offered as short-term rentals with building management providing hotel-like services and amenities. In addition to on-site concierge, housekeeping and laundry services the building also features a 18,000sf open air terrace on the 10th floor and a rooftop pool with cabanas and fireplace seating areas.
In total Largo poured 20,000CY of concrete over the course of 15 months with 130,000 manhours. The building is designed by STG Design and Cardno Haynes Whaley structural engineers and general contractor AECOM Hunt expect to have the project complete during the summer of 2021.
The New Century Plaza Towers became the tallest buildings in Century City, CA this month when Largo Concrete topped out at level 46. In addition to constructing the twin towers simultaneously, Largo also retrofitted the historic Fairmont Hotel designed by world-renowned architect Minoru Yamasaki along Avenue of the Stars. Yamasaki was also responsible for the triangular shaped 44-story Century Plaza Office Towers located on the opposite side of the main thoroughfare. In an effort to pay homage to Yamasaki, design architect Pei Cobb Freed & Partners shaped the new towers as reuleaux triangles. A figure consisting of three circular arches, formed from the intersection of three circular disks, each having its center on the boundary of the other two.
Largo began construction during the summer of 2018 by pouring seven large mat foundations, two of which were we over 9,300CY. Limited access to the site meant much of the readymix for the large pours had to be piped in from Constellation Way to placing booms mounted on tower crane foundations. The first of these two pours utilized five truck mounted boom pumps and two placing booms to place 9,509CY over the course of 16 hours. The second large pour was even further from the street and required five placing booms and two boom pumps to place 9,367CY over 16 hours.
The first four levels out of the ground are dedicated primarily to 1,345 parking stalls and back-of-house facilities. Radius vehicular ramps and grand staircases exude the circles used to shape the reuleaux tower decks to come above. A 25’ tall radius transfer beam supports 30 columns opening up the loading dock space. Formwork supplier Peri USA assembled a temporary access bridge to deliver rebar from Constellation Way to the back of the site. In addition to reducing the amount of crane time the temporary bridge also minimized vehicular traffic along the privately owned Solar Way.
The twin towers rise from the exquisitely landscaped plaza level lined with retail shops and cafés for a pedestrian experience which continues through the hotel lobby to Avenue of the Stars. The towers were constructed concurrently with crews pouring a deck on alternate towers every two days. A custom PERI ACS 400 core wall, self-climbing interior system with gantry beams suspending the exterior formwork was used for the hexagonal-shaped core walls. A radius trolley trailer beam was suspended from the core climber to facilitate construction of the steel framing inside the tower lobbies. The entire system weighed over 360,000lbs.
A column mounted cocoon screen with attached roll-back column formwork enclosed the upper floors as they were being constructed which removed re-shoring and enhanced safety on the site. The perimeter column forms were designed so that they could be stripped horizontally, from underneath the deck, which allowed the deck formwork to be completed before the column forms were poured and stripped. Largo also self-formed the masonry scope of work placing 102,000 concrete masonry units throughout the building including the entire height of the core.
In an effort to ease the strain on vertical transportation between the two towers, teams utilized a temporary 60’ pedestrian bridge spanning the two structures beginning at level 30 and moving up to level 43 as the buildings progressed. This proved especially helpful once Covid-19 reduced the number of individuals in each manlift for social distancing measures.
When complete, the $2.5 billion revitalization project will be over 1 million square feet on the 6.13-acre site. The Fairmont Century Plaza will feature 400 hotel suites with 63 private residences on the upper levels and the towers will hold 290 luxury condominiums with multi-level penthouses. Largo Concrete will have worked 760,000 Man Hours placing 151,000 CY of Concrete! General contractor Webcor is working with Gensler and Harley Ellis Devereaux Architects and structural engineer Englekirk to have the development open during the summer of 2021.