City Hall Project

A                             B                              C                               Rebuild

  Option A B C Rebuild!
options Limited choices Wider choices Widest choices Total sq ft = 10,768 – Many Options
type Modular manufacturer Commercial quality/durability Institutional Quality Construction Historic
Design type    Wood framed modules shipped to site

Pier foundation with siding skirt (full foundation possible at higher cost); composite or plywood type exterior siding

Mid-range asphalt shingle roof; vinyl windows; lowest grade fiberglass door

Less limited (e.g., increased flexibility for floor plans, building layout   Architect designed floor plans can be custom designed

Building exterior design would allow for the most variation and architectural features.

 

Similar to Option C, floor plan is flexible.

 

Material finish    Textured drywall walls with vinyl base; carpet or vinyl flooring; dropped acoustic ceilings; recessed grid lighting in acoustic ceilings    Textured drywall walls with vinyl or wood base; carpet or vinyl flooring; gypsum and/or dropped acoustic ceilings; many lighting options   Interiors could include higher end finishes such as extensive wood finishes, specialty lighting, heavy timbers, and vaulted ceilings Replace all visible interior and exterior fits and finishes.

Flexible choices for drywall, flooring, lighting and wood finishes.

Rebuild will utilizes existing old-growth wood, which

has distinct advantages over today’s lumber cultivated to grow rapidly.

Design consideratons    Restricted by floor dimensions that may be shipped -15’x60’ max; ceiling heights -typically 9’; limited exterior form

Requires exterior ramps/stairs to access interior due to foundation height

Consist of multiple modules located together on site

   Less limited (e.g., increased flexibility for floor plans, building layout

Architect designed

Floor plans can be custom designed for efficiency to meet City’s Administrative and Public Safety requirements

 Architect designed

Floor plans can be custom designed

Building exterior design would allow for the most variation and architectural features.

Old growth wood is resistant to rot and termites, stronger and harder.

 

It is more stable than today’s wood because it expands and contracts with moisture. It is beneficial to have wood that can stand up to very dry or very wet conditions. The result is longer-lasting paint jobs, less movement, and fewer gaps during the cold and dry months.

Seismic preparedness   Would not meet seismic structural standards for essential public facilities (highest seismic strengthening required for public safety facility) -increased strengthening possible at higher cost

Not useable after earthquake

   Public Safety portion of the building would be designed to meet seismic structural standards for essential public facilities (highest seismic strengthening) – may be utilized after an earthquake; other portions will allow for safe exit; structure may need to be replaced    The entire building could be designed for the highest seismic protection Class 3 seismic rating
sustainability Code minimum Code minimum with opportunity for modest additional features (e.g., super energy efficiency, solar panels, electric vehicle chargers  Can achieve high level of sustainability to include additional sustainability features such as battery storage, geothermal/ Ground Source Heat Pump, or biomass energy Renovate existing building; reusing building materials and diverting demolition materials from a landfill contribute to LEED points.

Opportunity to install all new energy efficient systems can create an energy efficient LEED certified structure

lifespan Approx. 20 – 25 years Approx. 40+ years Approx. 50 years Longer
cost Lowest cost (customization will increase cost) Approx. 1.5- 2.0 X Cost of Concept A (customizations will increase cost) Approx. 2.0 -2.5 X Cost of Concept A $235-250/sq ft

 

(Much lower than new build estimates ~ $500-600/sq ft)

Construction type      Site built wood framing

Concrete foundation or slab on grade

Variety of exterior siding options including cedar shingles

Premium asphalt shingle roof; wood or vinyl windows and skylights; wood or fiberglass door

  Site built wood framing or concrete and steel

Variety of exterior siding options including cedar shingles

Premium asphalt shingle roof or metal roof. Wood, architectural grade aluminum, fiberglass or vinyl windows and skylights. Wood or fiberglass doors.

 

The difference between old growth wood and new growth wood is like the difference between granite and paper.

Old growth wood has better stability, durability and longevity.     New growth wood and the buildings they’re made of, begin to rot and warp after only twenty years.

Old growth wood has better stability, durability and longevity.

All lumber before 1960 was full size a 4×4 was actually 4” x 4”

Today a 4×4 is 3 1/2” x 3 1/2”  making it smaller and weaker.

 

Size standards, maximum moisture content, and nomenclature were agreed upon only as recently as 1964. The nominal 2×4 thus became the actual 1½ x 3½, imperceptibly, a fraction of an inch at a time. It was a 34 percent reduction in actual volume; as those in the trade would say, it’s “selling air.”