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DBA Constructs Two New Shooting Ranges

09 Jul 2019/in , , , /by

Under our existing Job Order Contract with the Arizona Game & Fish Department, DBA has completed a new shooting range in Kingman and is under construction for a new sharp-shooter range in Sierra Vista.

Near Kingman, at the 7-Mile Shooting Range Facility, DBA was responsible for the earthwork associated with the reconstruction of a high-power rifle range with 50 meter long berms on both sides of range with 7-foot high retaining walls.

Within the same facility, DBA was contracted to dig out a new below-grade hand-gun shooting range with 20-foot high retaining walls.

Upon completion of the Kingman project, DBA was awarded a second contract with AZ Game & Fish to build a new sharp-shooter facility in Sierra Vista, Arizona. The project will be built in three phases to include the West Berm Range 3 with 20-foot tall earthen walls, the backstop berm at Range 3, and a 20-foot tall backstop berm at Ranges 1 & 2.

Both facilities required heavy earthmoving operations. The Sierra Vista facility required hauling and placement of more than 19,230 CY.

DBA Part of Surprise’s New Veterans Reflection Circle

01 Jul 2019/in , , /by

Volunteerism is an important part of being an employee of DBA Construction. At a recent City of Surprise Council Meeting, DBA project management stepped up to assist the City along with several other contractors, consultants, and material suppliers to donate labor and materials to build a new memorial for wounded combat veteran and long-time Surprise resident, Brian Mancini.

The project, Veterans Reflection Circle, is going to be built between the main library and City Hall near the lake and will include a plaque commemorating Brian’s service to his country as well as a water feature, landscaping and hardscaping provided by the volunteers and donations.

DBA project management recently attended the Ground Breaking Ceremony on June 24th. The project is scheduled for completion in time for Veterans Day in November.

Drainage Improvements Added to Remote Access

04 Jun 2019/in , , /by

Beginning in June, 2015 and DBA’s first contract with Salt River Project at Horse Mesa Dam, DBA continues to support Salt River Project on maintaining safe access from the Apache Trail down to the dam. Our first project the Rock Debris Talus Stabilization project stabilized the rock face above the employee parking area and the main access to the dam. Since, then, DBA has embarked on several projects along the roadway to provide safer travel for dam engineers and suppliers driving to the site.

On April 4, 2019, DBA was once again awarded a contract for an additional $269,533.00 to improve drainage along the access roadway. This included excavation for and new construction of curb, gutters, valley gutters, and shotcrete spillways along both the Main Access Road and the road leading to the Man Camp.

Total quantities included:

450 SF of Valley Gutter; 1,195 LF of Concrete Curbing; 418 SF of Shotcrete Applications; 1,318 LF of Rebar; and 146 Each of #8 Bar Anchors

Peoria Awards Bridge JOC to DBA for Second Term

06 May 2019/in , , /by

In November, 2013, DBA Construction was awarded its first Job Order Contract for Bridge Deck Repair and Rehabilitation with the City of Peoria.

Awarded for a single year with the possibility of four additional contract years awarded based on performance, DBA recently completed its fifth year with the contract.

In March, 2019, the City issued the RFQ for Bridge and Guardrail Repairs and Rehabilitation (2019) and DBA, due to their efforts, was again rewarded with yet another JOC with Peoria.

Innovation Results in Permanent Solution for SRP

15 Apr 2019/in , , /by

In August, 2018, the Phoenix area experienced some of the State’s worst monsoon winds in recorded history.  Many locations within the metropolitan area experienced serious damage caused by high winds and lightning strikes.  One such location, in the west valley near Tonopah, Salt River Project’s (SRP) 500 kV lattice power transmission poles (Hassayampa-Jojoba Line section) were twisted at their concrete foundations and bent over.  This created a situation where many local businesses and residents lost power.

Once the emergency response was executed and temporary power was restored, SRP could get on with the business of repairing the foundations and replacing the towers.

In February, 2019, DBA was contracted by SRP to construct the ultimate replacement of the foundations so that SRP personnel could replace the 500 kV towers “walking giants”.  This included very precise templates for drilling core holes in the newly poured foundations that would fit-up with SRP’s anchor bolt assemblies. 

Project management staff, structural superintendents and DBA mechanics reviewed the damage, drove to the site and took photos of the existing conditions and met with the SRP Principal Engineer, Jim Adams.  SRP’s original plans included a template for the fit-up that did not take into consideration the added grout to the core drill holes and rebar that would need to be in place as part of the remediation.  DBA developed a unique template that took all of the new conditions into consideration and created a mock-up in the DBA maintenance yard to demonstrate its use to SRP engineering management.

Once the solution was approved, the remediation project was able to proceed.  DBA’s scope of work included:  removal of the existing concrete foundations (8 each) down to 1’ below grade (removals varied from 1’-9” to 3’-0” depending on location); holes were drilled in each foundation to accommodate rebar dowels and the forming of a rebar cage to pour new concrete atop the existing foundation for structural strength.  Once the concrete was set, DBA subcontractors cored holes in the new foundation (using the new template layout).  DBA placed the anchor bolts (3.5” diameter 3 per foundation placed 15’-3” deep) into the holes and grouted around them, lining up precisely with SRP’s anchor bolt assemblies and preparing the new foundations for the steel towers. 

DBA crews had to coordinate our construction work with the SRP crews who were bringing in the new steel towers for fit-up in the field.

The project was a great success and DBA was praised for our innovative approach to the challenge.

“Everyone is very pleased with the work you guys did for us.  Grout is good, tower legs fit-up nicely, and finished ahead of schedule.  As always, very innovative on your part to a non-standard project.”

Jim Adams, Principal Engineer, Salt River Project

SRP SUBSTATION IN EAST VALLEY

04 Mar 2019/in , , /by

As part of a larger construction team, DBA is providing concrete foundation construction for a new 17-acre “greenfield” site that when complete will be the new Henshaw Substation in Chandler. Located on the southwest corner of Germann and Price Roads, DBA was contracted to provide excavation of the trench for the 11′-4″ high perimeter wall surrounding the entire site, as well as grounding conductors, placement of the rebar and concrete for the wall foundations (3,600 LF).

Louisiana Contract Turns Into 3 Projects

27 Dec 2018/in , , /by

Under our contract with Overland Contracting, Inc. (OCI), DBA was awarded its second contract in Louisiana for site development services of a new power substation for Entergy. The Robert Substation is located on the north shore of Lake Pontchartrain in Madisonville, Louisiana. The 8-acre site included:
+ Clearing and grubbing of a heavily wooded site
+ Rough and fine grading
+ Site drainage including the installation of 12″, 15″, and 18″ RCP with bedding
+ Installation of 24″ CHDPE piping with bedding
+ Placement of rip-rap (approximately 2,000 tons)
+ Development and compaction for equipment pads
+ Placement of 610 Base material
+ Importing 35,000 CY of base material
+ Installation of catch basins
+ Establishment of a retention basin for site drainage
+ Access roadway establishment
+ Installation of fencing, entrance gates, and bollards
+ Storm water pollution prevention measures
+ Hydroseeding
+ Installation of channelizers along Highway 190 to prevent left-hand turns out of the site onto the highway
+ Traffic control measures

Immediately following the kick-off meeting for the construction of the Robert Substation, OCI met with DBA management to add the expansion of a second substation at the Fairview site approximately 18 miles away. This included clearing, grubbing, site drainage, roadway access, and pad development for additional equipment on the 1-acre expansion.

While under construction of the two substations, DBA negotiated a third project with OCI to establish a complete 125′-wide right-of-way between the two substations for the 18-mile distance. This included extensive clearing and grubbing, fencing and gate installation, access roadway establishment, and hydroseeding.

All three projects were completed simultaneously in December, 2018.

Quartzsite Project Completed Ahead of Schedule

30 Nov 2018/in , , /by

The Town of Quartzsite, in far western Arizona, advertised an Invitation to Bid on a project requiring multiple street and drainage improvements throughout the Town. DBA was the apparent low bidder on the project and recently completed the project ahead of the original schedule. Construction sites were located in both residential areas and along major thoroughfares where extensive traffic control and coordination with adjacent businesses was required. Streets affected included: Johnson Avenue; Cowell Street; Mountain View Lane; and Cholla Road. Our scope of work included:
> Removals of existing pavement and concrete flatwork (curb, gutter, sidewalks, driveways, etc.)
> Roadway excavation
> Subgrade preparation
> Construction of new concrete curb, gutter, sidewalks and driveways
> Construction of new concrete scuppers, valley gutters and concrete-lined channels for drainage
> Rip-rap placement
> Construction of a concrete, low-water crossing
> Installation of gabions
> Placement of both AC and PCC paving
> Adjustment of manholes
> Installation of new signage, striping, and pavement markings

Specialty Work Completed at Yuma Proving Ground

12 Nov 2018/in , , /by

Hired as specialty subcontractor for the U.S. Army MATOC (Multiple Award Task Order Contract) task order, the project was to repair two existing brine evaporation ponds (approximately 5 acres total) at Yuma Proving Ground to help prepare the ponds for a new geotextile liner. Through our extensive work at Palo Verde Generating Station and other locations using geotextile liners, DBA was recommended for this important military project. Our scope of work included:
* Remove the existing liners and dispose at landfill
* Fine grade the slopes on the north and south ponds
* Dig anchor trenches around both ponds and backfill after the new liners were installed
* Repair an inflow diversion structure
* Temporary removal and reinstallation of barbed wire fencing around both sites
Through our value-added/innovation meetings, DBA was able to incorporate several ideas for budget savings that gave the project an additional $12,000 and saved 5 days on the original schedule.

DBA Provides Better Access for Tempe

02 Nov 2018/in , , , /by

The City of Tempe had built numerous, multi-use paths in various locations across the City. At 11 different locations, access to the multi-use path for use by the City street sweeper crews was hindered by the lack of continuous access from the neighboring street or alleyway. In some locations, the only access to the path was to drive over several hundred feet of dirt and rock. This surface was not optimal for the sweepers. Submitting a bid on a hard bid project, DBA was awarded the contract as the lowest responsible bidder. Our scope of work included:

Surveying
Subgrade preparation
Placement of aggregate base course (ABC)
Placement of AC paving
Construction of concrete sidewalks
Construction of concrete driveways
Demolition of existing terrain
Removal of existing signage, posts
Relocation of irrigation sleeving
Modification to landscaping
Striping and pavement markings

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