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Tag: Design Development Phase

A look forward…and a look back…

From Superintendent McFall: What to expect September 19 – October 10:

Modular Trailer/Temporary School Update

  • The modular classrooms (trailers) that are currently located on the Lincoln campus will begin to be set into place this week to form the temporary school in the configuration that will be used to operate the K-4 school for the 2020 – 2022 school years.
  • There will be 3 additional overnight moves to transport the remaining trailers from Hanscom Air Force Base to the Lincoln campus. These overnight moves will take place on September 24, 25, and 26.
  • As the trailers arrive on site, they will be set in place and anchored to their foundation. Additional work will be carried out to connect utilities and create a temporary parking lot. This initial phase of setting the trailers is expected to be completed by October 10. Additional work on the site and interior of the temporary building will continue through December.

A Brief History of the Project...

From time to time, questions come up about where we are in the process, how much has been decided, or what the decision process has been. The links below follow the journey of the Lincoln School project:

  • 1994 – 2017: Studies that led to the project.
  • March 2017: Town votes to authorize the School Committee to use $750K for the first phase of the current project and to appoint a School Building Committee. Start of Concept Phase.
  • Summer 2017 – June 2018: Concept Phase. The design team & SBC develop a range of project choices that achieve different levels of renovation at a range of costs.
  • June 9, 2018: Special Town Meeting. Residents are given the opportunity to choose between 5 project concepts. After 2 rounds of voting, concept “L3” (a $93.9M major renovation) gets 73% of the vote. L3 is a 75% renovation/25% new construction concept that retains the “L-shape” of the current school, reconfigures/provides new spaces to support the educational program, and determines that the school will be net zero.
  • June 2018 – December 2018: Schematic Design Phase. The L3 concept is developed further in preparation for a December Special Town Meeting to bond the project. The phase ends with cost estimates before the bond vote; SBC goes through a value engineering process to make decisions that keep the project on budget.
  • December 2018: December 1st Special Town Meeting and December 3rd Special Election to bond the project.
  • December 2018 – April 2019: Design Development Phase. Continued work on interior and exterior design and materials, major systems, etc. The phase ends with cost estimates; no value engineering needed.
  • April 2019 – September 2019: 60% Construction Documents Phase. Materials, plumbing and electrical plans, mechanical systems, site work, and phasing plans are refined; design/construction team works with Lincoln Planning Board, Conservation Commission, Historical Commission, and Building Department on required permits. Phase ends with cost estimates; SBC goes through a value engineering process to make decision that keep the project on budget.
  • NOW: September 2019 – December 2019: 90% Construction Documents Phase. Continued refinement of plans and drawings in preparation for sending the project out to bid. Final round of cost estimates will be performed before the bid documents are finalized.
  • SUMMER 2020: Phase 1 begins – renovation of the Middle School (Brooks). Grades K-4 move into the temporary school; grades 5-8 move into the elementary end of the school (Smith)

Next SBC Meeting: Wednesday, September 25th, 7pm, Hartwell multipurpose room.

  • Review refinements of interior design
  • Review exteriors of Brooks & Reed Gym
  • Review plan for salvaged items
  • Monthly budget update
  • Construction update

On Budget…

The consensus of three independent cost estimates is that the project continues to be on budget! The Design Development phase is now drawing to a close, and the Construction Documents (CD) phase begins. The next round of cost estimates will been at “60% CD,” which means when the construction documents are 60% complete.

Project Schedule

At Wednesday’s meeting, our construction team from Consigli presented an updated project schedule. The schedule represents a lot of think about a wide range of details. The Logistics Sub Group, comprised of design and construction team members, along with our school admin and facilities team, will continue to refine the schedule and consider all aspects of the project: construction staging areas; safe traffic flow for cars, buses, construction vehicles, and pedestrians; wetlands and tree protection, etc. See the presentation here.

The chart below gives an overview of the latest information about how the project affects different grades and the community over the next several years. Refinements of the plan will continue!

Meeting Schedule:

  • April 22nd: The Site Sub Committee will meet at 9am, Hartwell multipurpose room.
  • April 24th: SBC meeting has been CANCELLED. This meeting was in place for value engineering. Due to the positive news about the budget estimates, it is not needed. Next SBC meeting is on May 8th.
  • April 25th: Outreach Committee meeting is CANCELLED.
  • May 1st: Conservation Commission will conduct the first of two public hearings on the plan for the modular classrooms.
  • The Outreach Team is taking a brief break. Look for the next blog post on May 5th!

The bottom line…

As mentioned in prior posts, the Design Development drawings were recently submitted for another round of cost estimation. Those estimates will be reviewed at this week’s SBC meeting.

Wednesday, April 10th, 7:00pm, Hartwell multipurpose room

  • Review preliminary construction costs
  • Review updated construction timeline
  • Subcommittee reports
  • Site permitting update

Design Updates…

The design team is continuing to work through a myriad of site plan, systems, and design details. Following are some updated images that were shown at Wednesday’s meeting.  To see the entire slide deck, click here.

Below is a view of the current site showing the latest thinking about the location and configuration of the temporary school and parking lot (inside the red circle). Once the final contract has been awarded for the modular units, the construction schedule will be updated, and we will begin to share information about what we can all expect when we drive onto the campus after the 4th of July.

Upcoming meetings:

  • April 3rd, Power Purchase Agreement Subcommittee, 7:30am, Hartwell multipurpose room.
  • April 10th, School Building Committee, 7:00pm, Hartwell multipurpose room.
  • April 11th, Outreach Subcommittee, 11:00am, Hartwell multipurpose room.
  • April 22nd, Site Subcommittee, 9:00am, Hartwel multipurpose room.

Update from Town Meeting 2019

For the first time in…a long time…there was no school project presentation or vote at Town Meeting. However, there were two warrant articles with ties to the project:

  • Property Tax Study Committee: In February, the Selectmen (BOS) appointed the Study Committee, which is charged with examining existing tax abatement/deferral programs, determining unmet needs, investigating other possible programs, and making recommendations to the BOS. Click here to see the slides from Town Meeting.
  • Solar Bylaw: Lincoln first adopted a solar bylaw about a decade ago. Since then, both photovoltaic (PV) technology and the financial arrangements for installing PV panels have changed. Town Meeting voted to amend the current solar bylaw to allow residents, businesses, and the Town to enter into power purchase agreements (PPAs). This was a critical vote for the school project, and it was approved virtually unanimously. To learn more about how the bylaw was changed, visit the FAQ page on the Town website.

This Week’s SBC Meeting: The SBC will meet on Wednesday, March 27th @ 7:00pm, Hartwell multipurpose room. The agenda includes:

  • Review site and floor plans
  • Review exterior elevations
  • Review HVAC systems
  • Review monthly budget update
  • Review updated modulars plan (temporary classrooms)

Honoring our History…

As the SBC and design team work through the Design Development phase, there are discussions about the preservation and reinstallation of historic elements such as the butterfly weathervane and the bell from the deCordova estate. In addition, the committee is considering ways to salvage some materials from the demolition process for reuse in the building. Here are some examples:

  • deCordova Bell: The current proposal is to install the bell in the new Reed Gym connector. This is an area that will be visible to the community during events in the gym and/or the Auditorium.
  • Butterfly Weathervane: Given the scale of the weathervane, an outdoor location is probably most appropriate. The image shows some possible locations.
  • Wood Flooring from the Smith stage: The design team is proposing using the flooring from the Smith stage as an architectural accent in the Learning Commons.

…Building our Future

This was the last SBC meeting before the Design Development drawings and specifications are sent out for the next round of cost estimates (cost estimates will be reviewed at the April 10, 2019 meeting). Many details are being worked through, such as the layout of the new kitchen & dining commons. SMMA’s kitchen consultant is continuing to collaborate with the administrative team, including the Director of Food Services.  They are thinking about issues such as the ease of refilling food displays, height of the check out lines for our younger students, and orientation of the serving and check out lines for maximum efficiency. Here is the latest plan:

Also at the last meeting, the SBC heard an overview of the instructional technology plan. This includes the network infrastructure, presentation tools for classrooms and large spaces, and safety and communication equipment. The plan is to build on our current systems and tools, and do our best to “future proof” our technology. This means building in the flexibility to upgrade and replace sytems and equipment as they change over time.

And in the short term…

The SBC saw the latest iteration of the planned layout for the temporary school that will be built on the center field. Preparations for installation of the modulars are expected to begin after July 4th.

The link to the entire presentation can be found here.

Next Meeting: Wednesday, March 27th, 7:00pm, Hartwell multipurpose room.

Worth a 1000 Words…

At the 2/27 SBC meeting, the design team (SMMA/EwingCole) presented the latest iterations of interior and exterior design elements. Some examples are below, and more can be found in the image gallery here.

The next SBC meeting is on Wednesday, March 13th, 7:00pm, Hartwell multipurpose room.

The SBC is considering two options for controlling solar glare on the eastern and western sides of the Learning Commons:

2/27/19 (option 1) perforated metal screen; there is flexibility to design the image produced by the perforations

2/27/19 (option 2) series of horizontal slats based on design elements of original Smith School

Another view of the center of the school: main entrance, Learning Commons, and Dining Common

2/27/19 iteration of the Main Entrance

Studies of the interior of the Learning Commons

2/27/19 study of the Learning Commons, looking west

2/27/19 study of the interior of the Learning Commons, looking east

Study for the interior of the Reed Connector

2/27/19 iteration of the interior of the Reed Gym connector

Project Bond Update

At the February 27th SBC meeting, Jim Hutchinson, Chair of the Finance Committee, provided information about the recently issued bond for the project, and shared analysis of the impact on residential tax bills.

On February 15th, the Town’s “AAA Stable” bond rating was reconfirmed by Standard & Poors. This was excellent news for Lincoln, and reflects the decades of hard work and sound financial policy practiced by our professional and volunteer financial team. With the best possible rating in hand, an initial $80M bond was put out to bid and eight offers were received. Citibank Global Markets offered the lowest interest rate, an average of 3.38% over the 30 year life of the bond, which is significantly lower than the percentage rates used in the tax impact models shown at the December 1st Town Meeting. Following are two ways of looking at the tax impact:

The table below shows the projected tax impact on different house values for FY20. It takes into account the proposed FY20 Budget (on which we will vote at the March 23rd Town Meeting).The graph compares the impact of the current scenario ($80M just borrowed @ 3.38% + an expected $8.5M bond @ 4% in 2021) to two prior estimates on a calendar year basis. For the current scenario only (light green bar), the graph includes the impact of the proposed FY20 budget.

This Week @ the SBC: Bond Rate & Design Updates!

In December, the Finance Committee used estimated bond rates of 4% and 5% to model the projected tax impact of the project…

Last week the town’s finance team got an updated bond rating and was ready to put the initial project bond out to bid, locking in our interest rate. The initial bond is for $80M out of the $88.5M residents authorized the town to borrow in order to fund the $93.9M project ($4.4M from the Stabilization Fund and $1.0M from free cash make up the difference between $88.5M and $93.9M). The Finance Committee will give us the bid results and more details at Wednesday’s meeting!

Also on the agenda:

  • Review Updated Floor Plan
  • Review Updated Exterior Elevations and Materials
  • Review Interior Designs of Community Spaces
  • Review Updated Monthly Budget

The SBC meeting is on Wednesday, February 27th, 7:00pm, Hartwell multipurpose room.

23 and We…

…Throughout the development of the school project, we have been focused on reaching an energy use target of EUI 23.  What does that mean, how do we get there, and are we getting close to our goal?

First, a refresher, what is EUI?

Energy Use Intensity (EUI) = The amount of energy (kBtu) consumed per square foot of a building. It is calculated by dividing the total amount of energy consumed in 1 year by the number of square feet in the building.

Currently, the school’s EUI is about 65. Why are we trying to get to 23? That is how efficient the building should be in order to be net zero “ready.” Then, the solar PV we put on the roof and over the parking lots will offset the electricity use of the school, making it a net zero building. We are on track to be the first net zero school renovation in the state!

How do we drive down electricity use? There are several main components: 

  • The building envelope: Highly insulated walls and roofs, and energy efficient windows.
  • Mechanical systems: All electric heating and cooling with a heat recovery system (see below to dive deeper into VRF and heat recovery systems).
  • Lighting: An LED lighting system that can gauge and adjust to the amount of natural light.
  • Plug load: How do we use the building? What are our electricity habits? This piece of the puzzle will require all of us who use the building to consciously consider our behaviors.

How are we doing so far? SMMA just ran an energy use model of the building at the Schematic Design phase. As of now, the school has a predicted EUI of 23.39! Energy models will be run again at the end of Design Development and during the Construction Documents phase.

Click here to see the slide deck from the February 13th meeting. It gives an overview of proposed systems and the energy model.

Do we still have your attention? 

What is a VRF system? What is a heat recovery system? Whether or not you are an electrical or mechanical engineer, this technology is pretty cool!

For those interested in the punch line, the goal of these systems is to create a consistent and comfortable indoor environment. They take into account outdoor temperature, solar heat load, and humidity, and can balance out different conditions in different parts of the building.

For those who want to know more…

While the details will be worked out over the coming months, the design team team is proposing some very interesting technologies for air quality, building comfort, and minimal energy usage to achieve our net zero goal.

Traditional heating and cooling systems are usually 100% “on” or “off”. For example, your house may clunk and creak when the boiler fires up, or lights may briefly dim when the A/C kicks on. In contrast, the systems for our new building will have “modulated” or “variable” operation: compressors and fans can run at partial capacity. The resulting system is quieter and more efficient, and can balance heating and cooling needs much more effectively (e.g. one classroom is receiving full sun and another is not).

Ventilation is another issue, as modern buildings are extremely well sealed. The design team is proposing “energy recovery ventilators” (ERV), a type of heat exchanger. ERVs efficiently transfer most of the heat from outgoing stale air to incoming fresh air (or the reverse in the summertime).

In addition, rooms will have sensors to detect occupancy via the carbon dioxide (CO2) emitted by people. That information is used to optimize air quality (through ventilation) as well as heating and cooling needs.