Concrete

Quail Ridge House Remodel, Happy Valley, OR

At Miller Consulting Engineers, no project is too big or too small.

Miller Consulting Engineers came to the aid of a local architectural firm Roman Design to provide structural engineering for the concrete walkway and patio cover for this new residence.

Designing the new concrete walkway and patio cover to be self-supporting, MCE helped to ensure that the new loads did not affect the existing home. Perched at the top of a 100-foot stairway, the patio was designed with hidden custom connections throughout the timber trusses and steel columns.

At the top of the new walkway, MCE engineered the new patio, covered by a cantilevered, column-supported structure made of steel columns to support wood beams and custom timber trusses.

The upper and lower terrace has an elevated reinforced concrete slab supported by concrete bearing walls that rest on continuous footings supported by driven steel pipe piles.

 

American Plaza Tower Condominium Parking Structure Repairs

Joint repair for American Plaza Parking Structure

Miller Consulting Engineers provided structural engineering services for this 200,000 square foot, four-level parking garage that serves residents of the American Plaza Condominium Towers in downtown Portland, Oregon. The garage was originally constructed in the early 1970s, and consists of a reinforced concrete waffle slab for the elevated levels of the structure. MCE was contacted to provide an assessment of the condition of the structure, as cracks were observed throughout many areas of the waffle slab and deterioration/corrosion was present in numerous areas of the slab.

The initial phase of MCE’s scope of services consisted of providing a visual observation of the garage, a preliminary review of the loading capacity of the structure, and a report outlining a recommended course of action to repair the structurally deficient areas.
 
American Slab AnalysisThe second phase of work consisted of MCE preparing a finite element analysis of the entire garage structure in order to more exactly identify areas that were overstressed. The finite element analysis allowed a precise measure of the structure’s load carrying capabilities, and thereby reduced the overall scope of structural upgrades. MCE also worked closely with a testing agency to outline areas of the building where non-destructive and destructive tests were needed in order to verify both the reinforcing steel in the slab and the compressive strength of the concrete. Additionally, MCE prepared an Engineer’s Opinion of Probable Construction Costs for the client to use in planning out the repair phases.
 Shoring and repairs of parking structure
The third and final phase consisted of preparing construction drawings for the structural upgrades, and providing construction administration services. Various upgrade and repair methods will be utilized to strengthen the structural elements, including the use of fiber reinforced polymers (FRP), conventional reinforcing steel, and repair mortars. This phase of the project is currently ongoing.

Stonewater Retaining Walls, Hillsboro, Oregon

The planning of this residential community required the construction of a retaining wall over 900 feet long varying in height from 10 to 16 feet. In addition, the requirement to incorporate a 6-foot-tall masonry fence on top for privacy and safety was designed. The retaining wall was designed and constructed as a cast-in-place, 12-inch-thick concrete cantilever wall design with reinforcing steel on each face in order to take loads from both directions. Because the wall was constructed in winter, it was required to withstand wind from both sides until spring came allowing backfilling operations to begin. As a result, MCE designed the wall to take loads from both directions. Additionally, Miller Consulting Engineers provided coordination with the site development design team. Further, Miller Consulting Engineers determined the structural system, checked and stamped structural calculations and drawings, while providing answers to field questions during construction services.

Milk Creek Bridge, Canby, Oregon

 

Miller Consulting Engineers, Inc. provided structural drawings and calculations for the new, 83-foot concrete and steel bridge over Milk Creek in Canby, Oregon. First, MCE inspected the existing bridge. Then, a vertical and lateral analysis of the proposed new bridge structure to replace the existing bridge was performed. Next, the bridge superstructure and substructure was designed to meet the requirements for AASHTO HS25 loading. Finally, MCE coordinated with the geotechnical and civil surveying team, along with the community homeowners to complete the bridge on time and within budget.

 

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At Miller Consulting Engineers, Inc. we specialize in problem solving. If you have a project that needs structural engineering services, feel free to send us a message or call our office. This message will be sent to our response team and one of our engineers will respond to your inquiry.