555 Tower Shell & Core

Construction of deep right of way modular suspended pavement system with drip irrigation system.
Completed right of way planting beds adjacent to modular suspended pavement system. (photo taken after turnover to and maintenance by others)
Mid-block raised planters with drain mat, filter fabric, drain access/inspection assemblies, 18″ depth sand and partial irrigation prior to soil installation.
Mid-progress installation of section of upper level 900 lineal foot metal wall system with drain mat and filter fabric.
Mid-progress installation of section of upper level 900 lineal foot metal wall system with drain mat and filter fabric.
Section of upper level metal planter just prior to completion showing gravel ballast around all perimeter edges of planter walls.
One of two upper level bioretention planters with drainage system, deep gravel and soil layers, irrigation, planting and compost mulch. Also shown is drain access frames and gravel ballast over pedestal-set pavers.
North plaza planting beds after installation of preliminary irrigation components and deep lower sand base under topsoil prior to installation of metal walls.
Completed north plaza planting beds after installation of metal walls, topsoil, irrigation, planting and mulch.
Upper view of completed north plaza planting beds.
Westside terrace prow planting beds prior to installation of drain mat, filter fabric, sand, soil, irrigation, planting and mulch.
Completed westside terrace prow planting beds.
Completed planting beds south of the prow planting beds area. Elevated synthetic turf pet relief area is visible on lower level left of photo center.
Western sloped section of extensive green roof showing installation of slope confinement system over drain mat with filter fabric.
Upper view of prow and adjacent sloped planting beds, and extensive green roof just after completion of installation. Three different sedum type/color mixes were utilized to provide each separated sedum panel with a different color scheme. Slope confinement system is under entire 3,500 square foot triangular area to the left of the mechanical well. Also shown is the metal edged gravel ballast maintenance paths and drain access/inspection assemblies.
Description: Landscape installation for new downtown Bellevue office tower and pavilion. Scope at right-of-way included landscaping with drip and conventional irrigation systems, soil prep, deep soils, extensive modular suspended pavement system, root barriers, planting and mulch, sub-surface tree anchoring, pet relief areas with boulders and gravel surfacing, tree grates, and bike racks.

At-grade on-structure scope included level and steep-sloped planting areas, drain mat, filter fabric, drain access/inspection assemblies, layered deep soils, drainage systems, multiple metal planter walls, dedicated irrigation system, planting and mulch, sub-surface tree anchoring, decorative gravel surfacing, and elevated synthetic turf pet-relief area with sub-surface washwater system.

Upper-level on-structure landscaping included 900 lineal feet of extensive metal planter wall system, metal edging, drain mat, filter fabric, drain access/inspection assemblies, crane hoisting and installation of deep soils, dedicated irrigation system, planting and mulch, sub-surface tree anchoring, decorative gravel ballast, free-standing planters with lattice screen systems and irrigation module inserts on multiple exterior terraces, bioretention planters with drainage systems, deep gravel and soil layers, irrigation, planting and compost mulch, and small extensive irrigated green roof with metal edging and gravel ballast.

Scope also included a 12,000 square foot extensive layered green roof which included 3,500 square feet of slope confinement system, intricate metal edging system for gravel maintenance access paths, drain access/inspection assemblies, dedicated irrigation system, and crane hoisting and installation of soils and gravel ballast.

General Contractor: Turner Construction Company
Landscape Architect: Site Workshop