Wellesley High School Project

Wellesley High School Project

Update for Annual Town MeetingApril 2010

Summer 2009 Construction of 3 off site parking lots

with porous pavement for WHS staff State Street lot expanded to 31

spaces; 26 for faculty, 5 for Brook path walkers

Tennis court lot expanded to 33 spaces

Basketball courts turned into 60 tandem spaces with 5 single spaces

State Street lot expanded

Summer 2009 cont. Construction of 5 new classrooms in old

school from lecture hall space to handle increased enrollment

Upper part of lecture hall demolished. Steel beams to support new classrooms

Corridor to 5 new classrooms

New classroom

Summer 2009 cont. Construction fence up, scaffolding around edge

of school adjacent to construction fence House at 57 Seaver St. moved across site to

Rice Street location Air filters installed on air intakes of old school Work to bring utilities on site begins

Scaffolding around edge of old school to provide protected corridor

September 2009 Old parking lot cleared (removal of planters,

trees, asphalt) Work continues on sewer and water Official Groundbreaking 9/29/09

Groundbreaking

October 2009

Trailers set up on site Concrete footings work begins Asbestos and lead abatement on 2

remaining Seaver St. houses (#53 & #55)

Continued work on sewer and water

Trailer complex on edge of Rice Street

Site viewed from Rice Street

Seaver Street house-lead abatement before demolition

November 2009

2 Seaver St. houses demolished Concrete footings continue

Concrete Foundation:Formwork is being installed, and reinforcement bars and anchor bolts are being set to pour concrete foundation walls, piers, and footings.

Rebar in place as concrete is poured.

November 2009 cont.

Pile driving begins on 11/9 252 steel H piles vibrated in during

school day and hammered to completion after school

Depth of 40-60 feet Piles in areas A and B, remainder of

building (C and D) has concrete spread footings

Area reference plan of new schoolRice Street

Front offices, gym, locker

rooms

Auditorium, arts, science

wing

2 academic wings

cafeteria, classes above

Equipment on site for pile driving.

H Pile lifted into place

Vibrating pile into place

December 2009

Piles completed with little impact on function of school

Concrete footings continue Begin review of thousands of steel

drawings with architect and Turner

January 2010 Foundation completed including all pile

caps and spread footings Piles excavated to install pile caps Forms placed with rebar for pile caps and spread

footings Concrete poured Cured with heat (as needed due to weather) Waterproofed Insulation installed Backfilled

Piles driven to completed depth.

Pile Caps:Piles are being excavated in order to form pile caps.

Pile Caps:Following excavation, piles are stoned to subgrade before placing forms with rebar and pouring concrete for pile caps.

Concrete Foundation:Concrete is poured into forms with rebar in place.

Forms in place for concrete pour.

Pile Cap

In order for the concrete to cure properly in winter months, heating coils with concrete blankets are set on it.

Here are the heating coils.

Here are the concrete blankets.

Concrete blankets.

Waterproofing:Concrete foundation walls and brick shelves are waterproofed. Procor waterproofing is sprayed on and rigid insulation is set in place.

Spread footing section with waterproofing sprayed on and insulation in place.

Backfilling:Due to the cold weather, it is important to remove the frost layer before backfilling with structural soil/fill.Here is unsuitable frost layer.

Backfilling:Area following backfill with structural soil/fill.

View from Seaver Street side of site.

January cont.

Applied for construction permit Rest of project out to bid

February-March Construction permit issued Crane arrives on site in multiple

pieces, is assembled and inspected by third party

Steel erection begins mid-March starting with Building C, followed by D, B, A

Utility work resumed with better weather in late March

Steel: March-September 2010

2000 tons of structural steel in plan 10,000 individual pieces

Beams & Columns Plates Angles Lintels

Architect rendering of steel structure

Steel erection began 3/12/10

Steel erection in Building C, adjacent to back of old school

Crane in action

View from Seaver Street side of site

Work begins on third floor

View from lecture hall classroom in old school

Looking forward into 2010-12 Installation of metal deck, followed by

concrete Then exterior skin with goal of being

weather tight by early 2011 Building substantially complete by

March 2012 Then commissioning of systems,

move from old school Open for students September, 2012

Additional comments

Project is on time and within budget MSBA closely monitoring project; both

budget and progress of construction GMP (guaranteed maximum price)

signed by PBC in March Outreach continues to neighbors and

parents on progress and impact on school function

View from above

Photos taken by Turner Construction from WHS tower

October 29, 2009

November 14, 2009

December 9, 2009

January 11, 2010

March 16, 2010

March 31, 2010