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Wellesley High School Project


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Wellesley High School Project

  1. 1. Wellesley High School Project Update for Annual Town Meeting April 2010
  2. 2. Summer 2009 <ul><li>Construction of 3 off site parking lots with porous pavement for WHS staff </li></ul><ul><ul><li>State Street lot expanded to 31 spaces; 26 for faculty, 5 for Brook path walkers </li></ul></ul><ul><ul><li>Tennis court lot expanded to 33 spaces </li></ul></ul><ul><ul><li>Basketball courts turned into 60 tandem spaces with 5 single spaces </li></ul></ul>
  3. 3. State Street lot expanded
  4. 4. Summer 2009 cont. <ul><li>Construction of 5 new classrooms in old school from lecture hall space to handle increased enrollment </li></ul>
  5. 5. Upper part of lecture hall demolished. Steel beams to support new classrooms
  6. 6. Corridor to 5 new classrooms
  7. 7. New classroom
  8. 8. Summer 2009 cont. <ul><li>Construction fence up, scaffolding around edge of school adjacent to construction fence </li></ul><ul><li>House at 57 Seaver St. moved across site to Rice Street location </li></ul><ul><li>Air filters installed on air intakes of old school </li></ul><ul><li>Work to bring utilities on site begins </li></ul>
  9. 9. Scaffolding around edge of old school to provide protected corridor
  10. 10. September 2009 <ul><li>Old parking lot cleared (removal of planters, trees, asphalt) </li></ul><ul><li>Work continues on sewer and water </li></ul><ul><li>Official Groundbreaking 9/29/09 </li></ul>
  11. 11. Groundbreaking
  12. 12. October 2009 <ul><li>Trailers set up on site </li></ul><ul><li>Concrete footings work begins </li></ul><ul><li>Asbestos and lead abatement on 2 remaining Seaver St. houses (#53 & #55) </li></ul><ul><li>Continued work on sewer and water </li></ul>
  13. 13. Trailer complex on edge of Rice Street
  14. 14. Site viewed from Rice Street
  15. 15. Seaver Street house-lead abatement before demolition
  16. 16. November 2009 <ul><li>2 Seaver St. houses demolished </li></ul><ul><li>Concrete footings continue </li></ul>
  17. 17. Concrete Foundation: Formwork is being installed, and reinforcement bars and anchor bolts are being set to pour concrete foundation walls, piers, and footings.
  18. 18. Rebar in place as concrete is poured.
  19. 19. November 2009 cont. <ul><li>Pile driving begins on 11/9 </li></ul><ul><ul><li>252 steel H piles vibrated in during school day and hammered to completion after school </li></ul></ul><ul><ul><li>Depth of 40-60 feet </li></ul></ul><ul><ul><li>Piles in areas A and B, remainder of building (C and D) has concrete spread footings </li></ul></ul>
  20. 20. Area reference plan of new school Rice Street Front offices, gym, locker rooms Auditorium, arts, science wing 2 academic wings cafeteria, classes above
  21. 21. Equipment on site for pile driving.
  22. 22. H Pile lifted into place
  23. 23. Vibrating pile into place
  24. 24. December 2009 <ul><li>Piles completed with little impact on function of school </li></ul><ul><li>Concrete footings continue </li></ul><ul><li>Begin review of thousands of steel drawings with architect and Turner </li></ul>
  25. 25. January 2010 <ul><li>Foundation completed including all pile caps and spread footings </li></ul><ul><ul><li>Piles excavated to install pile caps </li></ul></ul><ul><ul><li>Forms placed with rebar for pile caps and spread footings </li></ul></ul><ul><ul><li>Concrete poured </li></ul></ul><ul><ul><li>Cured with heat (as needed due to weather) </li></ul></ul><ul><ul><li>Waterproofed </li></ul></ul><ul><ul><li>Insulation installed </li></ul></ul><ul><ul><li>Backfilled </li></ul></ul>
  26. 26. Piles driven to completed depth.
  27. 27. Pile Caps: Piles are being excavated in order to form pile caps.
  28. 28. Pile Caps: Following excavation, piles are stoned to subgrade before placing forms with rebar and pouring concrete for pile caps.
  29. 29. Concrete Foundation: Concrete is poured into forms with rebar in place.
  30. 30. Forms in place for concrete pour.
  31. 31. Pile Cap
  32. 32. 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.
  33. 33. Here are the concrete blankets.
  34. 34. Concrete blankets.
  35. 35. Waterproofing: Concrete foundation walls and brick shelves are waterproofed. Procor waterproofing is sprayed on and rigid insulation is set in place.
  36. 36. Spread footing section with waterproofing sprayed on and insulation in place.
  37. 37. 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.
  38. 38. Backfilling: Area following backfill with structural soil/fill.
  39. 39. View from Seaver Street side of site.
  40. 40. January cont. <ul><li>Applied for construction permit </li></ul><ul><li>Rest of project out to bid </li></ul>
  41. 41. February-March <ul><li>Construction permit issued </li></ul><ul><li>Crane arrives on site in multiple pieces, is assembled and inspected by third party </li></ul><ul><li>Steel erection begins mid-March starting with Building C, followed by D, B, A </li></ul><ul><li>Utility work resumed with better weather in late March </li></ul>
  42. 42. Steel: March-September 2010 <ul><li>2000 tons of structural steel in plan </li></ul><ul><li>10,000 individual pieces </li></ul><ul><ul><li>Beams & Columns </li></ul></ul><ul><ul><li>Plates </li></ul></ul><ul><ul><li>Angles </li></ul></ul><ul><ul><li>Lintels </li></ul></ul>
  43. 43. Architect rendering of steel structure
  44. 44. Steel erection began 3/12/10
  45. 45. Steel erection in Building C, adjacent to back of old school
  46. 46. Crane in action
  47. 47. View from Seaver Street side of site
  48. 48. Work begins on third floor
  49. 49. View from lecture hall classroom in old school
  50. 50. Looking forward into 2010-12 <ul><li>Installation of metal deck, followed by concrete </li></ul><ul><li>Then exterior skin with goal of being weather tight by early 2011 </li></ul><ul><li>Building substantially complete by March 2012 </li></ul><ul><li>Then commissioning of systems, move from old school </li></ul><ul><li>Open for students September, 2012 </li></ul>
  51. 51. Additional comments <ul><li>Project is on time and within budget </li></ul><ul><li>MSBA closely monitoring project; both budget and progress of construction </li></ul><ul><li>GMP (guaranteed maximum price) signed by PBC in March </li></ul><ul><li>Outreach continues to neighbors and parents on progress and impact on school function </li></ul>
  52. 52. View from above Photos taken by Turner Construction from WHS tower
  53. 53. October 29, 2009
  54. 56. November 14, 2009
  55. 59. December 9, 2009
  56. 62. January 11, 2010
  57. 65. March 16, 2010
  58. 68. March 31, 2010