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REPORT TO
COUNCIL
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Report Number: OES 06-08
Date: March 25, 2008
From:
Everett Buntsma
Director, Operations & Emergency Services
Subject:
Consulting Services
Retrofit Work at Dunbarton Indoor Pool
File: A-1440-001-08
Recommendation:
1. That Report OES 06-08 regarding Consulting Services for the building retrofit at
Dunbarton Indoor Pool be received; and
2. The proposal submitted by Totten Sims Hubicki Associates (TSH) to provide
consulting services for preparation of tender documents and construction
contract administration for the building retrofit at Dunbarton Indoor Pool be
accepted; and
3. The total gross project cost ,including GST, of $138,600.00 and a net project
cost of $132,000.00, GST excluded, including consulting fees and other project
costs for the consulting services for the Dunbarton Indoor Pool be approved; and
4. That Council authorize the Director, Corporate Services & Treasurer to finance
the Dunbarton Indoor Pool consulting services as follows:
a) The costs of this phase of the project be temporarily financed internally
until the permanent financing for the capital construction, when approved
by Council, is undertaken;
b) The Treasurer be authorized to take any actions necessary in order to
effect the foregoing; and
5. Staff at the City of Pickering be given the authority to give effect thereto.
Executive Summary:
Totten Sims Hubicki (TSH) was retained to conduct a comprehensive evaluation on the
condition of Dunbarton Indoor Pool and prepare a report outlining the necessary repairs
and upgrades to enhance the facility's operations.
Report OES 06-08
March 25, 2008
Subject:
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Consulting Services
- Retrofit Work at Dunbarton Indoor Pool
Page 2
Total estimated costs to complete requirements recommended by TSH is approximately
$1.5 million dollars (including consulting fees). We have proposed this retrofit work to
Dunbarton Indoor Pool in the 2008 Capital Budget.
To advance this project in a timely manner the Director, Operations & Emergency
Services and Division Head, Culture & Recreation recommend that Totten Sims Hubicki
Associates be retained to provide consulting services for the Dunbarton Indoor Pool
retrofit and repairs. Totten Sims Hubicki are the Engineers of Record having provided
preliminary analysis of the facility.
The City's Purchasing Policy typically requires a formal Request for Proposal to be
called with regards to professional services. An exemption requires Council approval.
Financial Implications:
Retrofit Work at Dunbarton Indoor Swimming Pool
Estimated Project Costing Summary
Proposed Consulting Fees
Disbursements and Contingency
Subtotal
G.S.T.
Total Gross Project Cost
126,000.00
6,000.00
$132,000.00
6,600.00
$138,60000
G.S.T. Rebate
(6,600.00)
$132,000.00
Total Net Project Cost
The Director, Corporate Services & Treasurer has reviewed the budgetary implications
of the financing of the expenditures contained in this report and concurs.
Major renovations to Dunbarton Indoor Pool are proposed in the 2008 Capital Budget
($1.5 million dollars, includes consulting fees) of this amount approximately $1 million
dollars will come from Federal Gas Tax revenues with the balance to be debt financed
over 15 years. Estimated debt charges of approximately $50,000.00 per year will
commence with the 2009 Budget.
At this time Council authorization is needed only to cover consulting services for the
preparation of tender documents and contract administration services. The results of
the tender will be presented to Council at a later date.
CORP0227-07/01 revised
Report DES 06-08
March 25, 2008
Subject: Consulting Services
- Retrofit Work at Dunbarton Indoor Pool
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Page 3
Sustainability Implications:
The upgrading of mechanical equipment will produce more efficient operation and
consume less energy. Increased insulation in new roof will provide a greater "R" value
thus providing a more efficient building envelope and reducing energy costs.
The building retrofit will enhance Dunbarton Indoor Pool and allow it to continue to be
an integral City facility that provides year round high quality aquatic programs to its
residents.
Background:
Dunbarton Indoor Pool requires major retrofit work to ensure it continues to be an
integral City facility that provides year round aquatic programs to residents.
Totten Sims Hubicki (TSH) was retained to conduct a comprehensive evaluation on the
condition of Dunbarton Indoor Pool as provided for in the 2007 Capital Budget.
TSH were initially retained by the City to prepare a tender package for re-roofing the
building. While visiting the site, TSH observed there was a significant amount of brick
deterioration in a number of areas of the exterior walls. Before proceeding with re-
roofing and wall repairs, TSH were requested to provide a full condition assessment of
the pool facilities and prepare a report outlining the necessary repairs and upgrades to
enhance the facility's operations and reduce energy consumption wherever available.
We received a report from TSH dated January 11, 2008 (see attached) on the condition
of the exterior building and recommendations for building retrofit, recommendations for
re-roofing, assessment and recommendation on pools filtration systems and
underwater lighting and recommendations for mechanical equipment replacement and
upgrade. As part of this evaluation TSH also recommended renovations to
accommodate a small family changeroom. Total estimated costs to complete
requirements recommended by TSH is approximately $1.5 million dollars (including
consulting fees). We have proposed these major renovations to Dunbarton Indoor Pool
in the 2008 Capital Budget. A Council site visit to Dunbarton Indoor Pool is being
arranged for early April.
Attached is a proposal from TSH to provide the City of Pickering with consulting
services for the preparation of tender documents and construction contract
administration for this retrofit work at Dunbarton Indoor Pool at a cost of $126,000 plus
GST and normal disbursements.
TSH completed the condition assessment, to our complete satisfaction, and are the
most knowledgeable of the necessary repairs and upgrades. To advance the project in
a timely manner and ensure the timely completion of necessary capital work in 2008
CORP0227-07/01 revised
Report OES 06-08
March 25, 2008
Subject:
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Consulting Services
- Retrofit Work at Dunbarton Indoor Pool
Page 4
(August, September and October) the Director, Operations & Emergency Services and
Division Head, Culture & Recreation recommend TSH be retained to provide the City of
Pickering with consulting services for the preparation of tender documents and
construction contract administration for this project. If TSH are able to complete all
design work at once it would lead to a shortened design phase allowing for the earliest
of tender times and major work and pool closure to take place August, September and
October (prior to another winter season).
The City's Purchasing Policy typically requires a formal Request for Proposal to be
called with regard to professional services. An exemption requires Council approval.
Upon completion of tender documents, tenders will be called for the actual construction
project, which when received will be sent for Council consideration and approval before
being awarded.
Attachments:
1. Location Map - Dunbarton Indoor Pool
2. Building Evaluation Dunbarton Swimming Pool prepared by Totten Sims Hubicki
dated January 11, 2008
3. Proposal to provide consulting services from Totten Sims Hubicki Associates
dated January 25, 2008
Approved/Endorsed By:
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Supervisor, Facilities Operations
EveretH3untsm
Director, Operations & Emergency Services
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Gillis Paterson
Director, Corporate Services & Treasurer
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c -st~phen R&ynolds
Division Head, Culture & Recreation
CORP0227 -07 /01 revised
Report OES 06-08
March 25, 2008
Subject: Consulting Services
- Retrofit Work at Dunbarton Indoor Pool
Page 5
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Copy: Chief Administrative Officer
Recommended for the consideration
of Pickering Ci~'t Co~, "I
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CORP0227-07/01 revised
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ATTACHMENT # L TO REPOR! iT 0 f:. <-::) c, '=: 08
AVENUE
CITY
EASEMENT
CITY
OWNERSHIP
DUNBARTON HIGH SCHOOL
DURHAM DISTRICT SCHOOL BOARD
01003004500
DUNFAIR STREET
38
CULTURE & RECREATION DIVISION
OPERA nONS & EMERGENCY
SERVICES DEPARTMENT
REPORT TO COUNCIL
OE&S 06-08 DUNBARTON INDOOR POOL
SCALE: PlOT ~TE:
N.T.S March 19/2008
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Whithy. Ontario. Canada LI N 9J2
(l)OS) 668.l)J03 Fax: (90S) (168-(]22I
Ie-mail: hh0'tsh.Cil \\ \\\\ .tsh.ca
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engineers
architects
planners
January 11,2008
H
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Mr. Len Hunter, Supervisor
Facilities Operations Culture and Recreation Division
City of Pickering
One The Esplanade
Pickering, ON Ll V 6K7
Dear Len:
Re: Building Evaluation
Dunbarton Swimming Pool
TSH Proj. No. 22-32135
We submit herein our summary evaluation report on the condition of the Dunbarton Swimming Pool
building. We provide in this summary, reports that were previously issued, updated mechanical condition
assessment and recommendations for new systems, new information on the condition of the pool
equipment and budget estimates for refurbishing the Changerooms and renovations to accommodate new
Family Changerooms as discussed at our last meeting. It is noted that there has been some budget
increases due to increasing prices of construction products and services.
The Dunbarton Pool is an integral facility for the City of Pickering for the proVISIOn of aquatic
recreational services within the municipality. The only other public swimming pool in the City is located
at the Pickering Recreation Centre. The building was constructed in 1972 making the building 35 years
old. Generally, the building has been well maintained throughout its life. The roofing was replaced once
before, interior finishes in the change rooms have been upgraded, boilers have been replaced and
numerous mechanical components have been repaired and worn components replaced.
1.0 Report on the condition of the exterior building envelop
(previously issued September 27, 2007)
Tom Kara and B. Knoll of TSH reviewed the condition of the brick walls on September 12, 2007 after a
contractor had removed the brick from two areas on the exterior walls. This investigation work was
initiated by TSH who initially had been retained by the City to prepare a tender package for re-roofing the
building.
While visiting the site for the purposes of re-roofing, it was quite apparent through visual observation of
the exterior walls that there was a significant amount of brick deterioration in a number of areas.
Swimming pool buildings typically have interior environments that are degrading to exterior masonry
walls and other building components. The high heat and humidly levels combined with positive air
pressure caused by the mechanical system, forces moisture into the masonry components. As there is no
insulation, vapour barrier or air barrier in the wall construction, the humidity is forced into the walls. This
moisture condenses when the dew point is reached and in the winter months, the moisture in the walls
freezes and brick deterioration results.
Because of the height of this building (24' -7" to the roof deck or 21' -3" to the underside of the bearing for
the laminated wood beams) the brick and block wythes are required to be tied together. TSH
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January 11,2008
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recommended that the brick be removed in a couple of areas to investigate the condition of the steel
masonry ties that tie the inner thickness concrete block to the outer wythe of brick. The contractor
currently doing masonry restoration work at Dunbarton High School by DDSB was retained to do this
work.
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Prior to removal of some brick, we observed that there was rusting evident at exterior horizontal masonry
joints where the masonry reinforcement probably would be located. It is noted that masonry at the upper
several feet of the wall has previously been replaced.
The wall was opened in two locations fairly high on the wall where the moisture problem would be most
severe. One spot was on the west wall close to the north corner of the natatorium. The other was on the
south wall adjacent to a control joint.
As hot air rises, the moisture levels and
vapour pressures increase at higher levels
compared to lower on the walls. In both
locations, the masonry reinforcement was
totally corroded and practically non-existent.
There was no air barrier and no insulation.
Lack of insulation and vapour barrier is
typical for a building of this age. The exterior
walls are load bearing. The glue-laminated
wood beams supporting the roof, bear on the
exterior block waIls. The waIls are made up
of 12 inches of concrete block and 4 inches
of brick. It was also observed that the mortar
in a number of horizontal courses was being r
pushed out. This condition would be due to corrosion and expansion of the masonry horizontal masonry
ties used to bond the two wythes of the masonry together.
It was also observed that the condition of the waIl deterioration was worse at a couple of the vertical
control joints. These joints are caulked on the interior. However, over time, the caulking has dried out; the
joints have cracked aIlowing more moisture to enter into the waIl construction. The staining on the
exterior of the waIls and the condition of the brick mortar being
pushed out generally started at about ten (10) feet above the floor
level and went to the roof level. It is noted that masonry at the
upper several feet of the waIl has previously been replaced but is
also showing signs of deterioration.
Visual inspection of the interior of the walls indicated that the
lower ten (10) foot (approx) of the wall height was painted with a
high build type paint.. The paint coating was effectively acting as a
vapour barrier, sealing the walls and keeping the moisture out. The
paint on the upper portions of the walls did not contain as much
solid content and the pores of the block were still evident. The lack
of a high-build coating on the upper walls, along with high
humidity levels in the building are contributing to the problem of
brick, joint, and joint reinforcement deterioration. It was also
observed that the sealants in the masonry control joints were no
longer pliable and were cracked - allowing moisture to get into the
City of Pickering
January 11,2008
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wall construction. Also, at the glue laminated wood beams,
joints were opening up caused by deflections and movement
in the roof structure. These joints were not sealed and were
permitting moisture to enter into the walls.
At the south wall where an area of brick was removed, an
electrical conduit was located in the space between the brick
and block walls. The conduit is probably providing power for
the exterior light on the building. The steel conduit was
totally corroded and the wires could be seen. The extent of
corrosion illustrates the extent of moisture that has been
entering into the walls.
The masonry walls of the lower Change Room wing did not appear to be experiencing the deterioration
that the higher walls of the Natatorium were.
Recommendations for Building Retrofit
TSH recommends that the integrity of the existing masonry walls should be re-established in order to
extend the service life of the building. Due to the extent of deterioration, partial reconstruction of masonry
veneer is recommended.
TSH also recommends the installation of a proper vapour barrier, exterior insulation and metal cladding to
the top 14 feet of the natatorium to provide improved weathering capability of the building envelope and
energy conservation.
This masonry restoration must take place prior to re-roofing the building as the metal flashings around the
perimeter of the building will be impacted by the masonry restoration work.
Following are the recommendations for rehabilitation of the masonry walls. This work applies primarily
to the south and west of the natatorium.
· Remove the upper 14 feet (approx.) of the existing brick
. Clean the mortar from the block substrate
. Apply spray on rubber type air/vapour barrier to block substrate
. Install new 4 " concrete bloc veneer tied to existing block substrate using stainless steel
helical wall tie system
. Cover concrete block with insulation and metal cladding
. At lower 10 foot height of masonry wall, the existing brick is to remain.
. Re-tie the existing 4" brick veneer to the existing 12 inch concrete block using using
stainless steel helical wall tie system
. On the interior, repair cracks, re-seal control joints and seal movement joints at the glue
laminated beams
The budget estimate for this work is $160,000. This amount includes a contingency allowance of 10%,
contractor overhead and profit but excludes GST and engineering fees.
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January 11,2008
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It is to be noted that the lower 10 feet of brick is not being removed and an air barrier not being installed.
There may be future requirements for ongoing repointing of some of the joints where the existing
masonry reinforcing further deteriorates.
2.0 Re-Roofing and Condition of Concrete Roof Slabs
A detailed inspection of the Concrete Roof slabs undertaken on November 22, 2007 to investigate both
the roofing and the spalling of concrete from the roof deck on the interior of the building. The Town
requested this inspection after a piece of concrete fell onto the pool deck. The following comments and
recommendations were made with respect to the concrete roof slabs.
· The existing roof deck is constructed using siporex autoclaved aerated concrete slabs.
· The existing roof panels span parallel to the south facing wall of the pool between timber
beams.
· The concrete spalling is a result of differential movements between the first roof panel
partially supported by the exterior wall and second interior panel.
· The differential movements have resulted from the deterioration of the shear connection
between the first and second panel.
· There does not appear to be any corrosion of the steel reinforcement within the slabs.
· The differential movements do not appear to be excessive are a safety concern at present
but should be investigated further to confirm the full extent of deterioration.
· TSH recommend the following investigation:
· Complete a detailed survey to measure the differential movements in the exterior roof
panels. This can be accomplished using a ladder or lift from the pool deck.
· Complete a roof cut test down to expose the top surface of the concrete panel. The
present movements have most likely caused distress in the roofing membrane along these
joints. The tests will also help confirm the construction details of the slab joints and
identify any deterioration which may have taken place. Testing can be done at the same
time as some patching necessary to repair existing roof leaks.
A roofing cut test was undertaken on the roof on November 30, 2007. The cut test was done at the south
perimeter over the spot where the piece of concrete recently came loose.
The roofing system is made up of the following: over the concrete roof slabs were four plys of felts and
tar. This is the original roofing. The gravel would have been scraped off when the roof was re-roofed in
the distant past, however, the original felts and tar were left in place. Over top this, approx. Y2" to 3,4"
fibreboard and a new four ply felt, tar and gravel system was added.
We found the fibreboard to be saturated. The bottom layers of tar and felts were very difficult to scrape
off and were well bonded to the porous concrete surface. The concrete surface was dry. This indicated
that the wetness of the fibreboard was coming from the outside surface rather than condensation from the
pool.
Future re-roofing would remove the upper felts and tar and fibreboard but leave the base felts and tar as
was done in the past to avoid damaging the surface of the light weight concrete roof panels.
The cut test was done over the joint in the precast where differential deflection was visible on the interior.
We observed the edge of the higher panel at the perimeter wall was ground down. This would have been
done during initial construction to create a taper for the roofing system. The problem was probably due to
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January 11,2008
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the top of the masonry wall bearing surface being slightly higher than the laminated wood support
structure for the panels. There was also observed deflection in the panels. Total deflection at this panel at
approximately mid span where the cut test was taken was approximately %". Interestingly, all the original
roofing membranes conformed to these deflections indicating that this deflection (to a point) was always
there. There probably has been a bit more deflection over the years due to temperature differentials,
concrete creep and loading on the slabs.
In summary, there has not been any significant new movement in the slabs. The piece of concrete that
recently fell could have been the result of a temperature change causing slight frictional movement
causing a loose corner of the slab to fall. It may already have been cracked.
The roof had considerable (2") of water/ice on it because the two roof drains at the far north edge of the
roof were ineffective to remove water.The roofing definitely needs replacement with a system of sloped
insulation to positively drain the roof.
It is planned to remove the top layer of the existing built-up roofing down to the layer of fibreboard
insulation that was previously installed over the very original built-up roofing system Existing flashings
will also be removed. Supply and install new vapour barrier, 3112" rigid insulation, fibreboard over layer,
SBS modified bitumen roofing and new metal flashings. Work will also include introducing roof slopes to
slope the roof from the mid point of the building to the existing drains at the north end and to new roof
scuppers which will be installed at the south end. Repairs to the soffit at the entrance area and repairs to
the soffit at the exterior ductwork enclosure will also be undertaken. The budget estimate for this scope
of work is $190,000. excluding GST.
3.0 Pool Filtration System
The following general comments are made with respect to the condition of the pool filtration system:
· The existing pool filtration is in fair to good condition and utilizes an original DE system and
filter tank.
· This type of filter system is very efficient in cleaning pool water and has operated well for many
years.
· The existing pool filtration system meets current code requirements based on a pool volume of
150,000 USGal and a pump capacity of 437 USgal/min.
· The existing pool filtration system could be maintained cost effectively for the next 5 - 8 years.
After this period of time, consideration should be given for a complete replacement with a
new high rate sand filter system ( budget Cost of $65,000) due to the complications with parts
replacement and servicing of the existing old components no longer manufactured. Should part
replacements continue to be problematic, the filter system may require replacement for the 5 to 8
year term.
The following comments are made with respect to the individual components:
. The fiberglass filter tank is in very good condition
. The Circulation pump and motor is in fair condition but may need to be replaced within 5 years.
. The hydraulic Fisher inlet pool water valve is in fair condition but may need to be replaced within
several years.
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January 11,2008
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· The PVC piping is in fair to good condition. One section of the supply piping has been repaired
poorly and should be replaced with new fittings.
· The existing pool water heat exchanger is about 10 years old and will probably need to be
replaced within several years
· The PVC filter media and controls are no longer readily available. Significant tank modifications
may be required to facilitate newer system configurations in the near future.
· Chemical treatment for the pool is provided by a Strantrol System 5 which is about 2 years old
and in good condition. A new Strantrol C02 feed system is also utilized and is operating well.
· There are 18 underwater incandescent light fixtures in the pool. These fixtures are still functional.
The steel casing ring in contact with the concrete is corroding. This ring should have the rust
removed and an epoxy coating applied to retard corrosion. The estimated cost for this work is
$3,000. A more energy efficient metal halide fixture could be provided using the existing casing
and porthole lens. Estimated cost for these replacement fixtures is $40,000.
The costs noted above for the pool filtration and underwater lighting systems are seen as optional and not
immediately required. The City could defer these items.
4.0 Report on the existing Mechanical Systems
Gord Harris of TSH met with the building operator on December 7, 2007 to review and discuss the
condition and functioning of the present existing mechanical heating, ventilation and air conditioning
(HV AC) equipment located within the Mechanical Penthouse serving the Change Rooms and Pool area.
The following is a brief summary of observations and discussions that took place.
Two (2) atmospheric type heating water boilers are provided for heating of the building complex, pool
water heating and domestic hot water systems. Each boiler is manufactured by "Teledyne Laars" model
no. HHI200INIIK, serial no's. C94D02689 & C94D02692 and each have a natural gas heating input of
1,200,000 BTU's. Each boiler is approximately ten years old with no operating problems reported.
Heating water is circulated to air handling unit coils, heating terminal devices, pool equipment and
domestic hot water devices by means of a single base mounted horizontal pump. The pump is
manufactured by "Aurora Pump" no. 7163271, size 2-112 x 2 x 7, rated for 225 GPM @ 35.0 feet head,
all bronze construction. The pump seems to be functioning adequately with no operating problems
reported.
Heating and ventilation of the Change Rooms is provided utilizing a 100% outside air make-up air unit
rated for 4,400 CFM supplying tempered air to the spaces. The air is heated as necessary by means of an
integral heating water coil. The air supplied to the Change Rooms is exhausted directly to the outdoors
utilizing a separate floor mounted centrifugal fan. Each piece of equipment has rust forming on the unit
casings and each has exceeded its estimated service life based on ASHRAE guidelines. Also, the system
in place is not energy efficient and does not meet today's energy performance standards.
Heating and ventilation of the Pool area is provided utilizing a 100% outside air make-up unit rated for
12,000 CFM supplying tempered air to the space. The air is heated as necessary by means of an integral
heating water coil. The air supplied to the Pool area is exhausted directly to the outdoors utilizing a
separate floor mounted centrifugal fan. Each piece of equipment has rust forming on the unit casings and
each has exceeded its estimated service life based on ASHRAE guidelines. The present system does not
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January 11,2008
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provide any cooling and de-humidification, thus ongoing problems with humidity particularly in the
summer season is an issue. Also, the system in place is not energy efficient to meet today's standards.
Pneumatic system controls as provided by "Honeywell" control the mechanical systems. The system
controls seem to be functioning adequately with no problems indicated.
The supply and exhaust air duct distribution systems c/w air terminal devices seem to be in fair to good
condition with no problems indicated.
Recommendations for Mechanical Systems Retrofit
TSH recommends that mechanical system upgrades be implemented in order to replace existing aging
equipment and to provide new equipment and systems which will result in considerable energy savings to
the municipality and a much improved interior environment. The following is a listing of
recommendations for each of the mechanical systems.
Replacement of existing atmospheric boilers with two (2) new high efficiency condensing type boilers
downsized to an estimated heating input of 600,000 BTU's each to meet the reduced building and pool
heating loads. New flue venting, gas piping connections and heating water piping retrofit work for the
new boilers would be required.
Replacement of the existing base mounted horizontal heating water circulating pump with a 'dual arm'
type to meet the reduced building and pool heating loads. With a 'dual arm' type pump, two (2) pumps
are provided therefore no down time would be incurred if one (1) of the pumps was not functional due to
servicing or breakdown. Also, with two (2) pumps, pump operation can be altered on a scheduled basis
thus increasing the life span of each pump.
Replacement of the existing domestic hot water storage tank located in the Basement level presently
associated with the heating water boiler system and a new stand alone domestic hot water system
implemented utilizing two (2) high efficiency instantaneous natural gas fired wall mounted water heaters
located within the Basement level and each with an estimated capacity of 200,000 BTU's. New flue
venting and natural gas piping would be required routed to and from the new heaters.
Replacement of the 100% make up air unit supplying 4,400 CFM and separate exhaust fan serving the
Change Rooms with a new natural gas fired packaged rooftop unit c/w an energy recovery unit. The new
unit would be located on the low roof of the school east of the Mechanical Penthouse c/w new supply and
return air ductwork routed along the roof and dropping down through the roof, routed within the Ground
Floor Men's Change Room ceiling space and connecting into the existing ductwork.
Replacement of the 100% make-up air unit supplying 12,000 CFM and separate exhaust fan serving the
Pool area with a new desiccant wheel energy recovery dehumidification unit. Implementation of pool
water pre-heating would be available from the new unit. The new unit would be located within the
Mechanical Penthouse in place of the present existing make-up air units with new portions of supply and
return air ductwork connecting to the existing Pool duct distribution system. The new condensing unit
associated with the new pool unit would be located on the low roof of the school east of the Mechanical
Penthouse. Outdoor air would be introduced into the new unit by providing a new intake hood located on
the roof of the Mechanical Penthouse. The existing intake louver would remain with the inactive
section(s) blanked off. In accordance with ASHRAE guidelines, 4 to 6 air changes per hour are
recommended for pools with little to no spectators on the pool deck. If spectators are to be located on the
pool deck for an extended period of time, ASHRAE guidelines indicate that an air exchange rate of 6 to 8
air changes per hour be used. If the latter is utilized, the air flow requirements into the Pool area would be
substantially higher. This would result in the replacement of all the existing supply and return air
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City of Pickering
January II, 2008
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ductwork and air terminal devices with new, larger devices to accommodate the increased air flow.
Mechanical equipment replacement and upgrade costs is based on the assumption that there are no
spectators on the pool deck, thus resulting in air quantities suitable to the present system with no changes
to the air distribution system.
Provision and installation of four (4) new stratification type fans within the Pool area for the purposes of
air circulating and air temperature equalizing.
Mechanical equipment replacement and upgrade costs
Provision and installation of new programmable control systems for occupied and unoccupied conditions.
The following is a budget estimate cost for the mechanical systems retrofit work; GST and engineering
fees excluded:
1. Mobilization, de-mobilization, bonding and contingency
2. Demolition and disposals
3. Retrofit work to suit new installations
4. Structural upgrades to suit new equipment
5. New Change Room unit supply and installation
6. New Pool dehumidification unit supply and installation
7. New Pool stratification fans supply and installation
8. New heating water boilers supply and installation
9. New heating water circulating pump supply and installation
10. New instantaneous domestic hot water heaters and installation
11. Re-working of gas/heating piping, ductwork, insulation, etc. to suit new work
12. Electrical retrofit work
13. Controls retrofit work
14. New intake hood supply and installation
15. Balancing and commissioning
16. Mechanical Contractor overhead and profit
17. General contractor overhead and profit on this work
18. Total
$20,000.00
$50,000.00
$35,000.00
$22,000.00
$41,000.00
$292,600.00
$6,190.00
$52,000.00
$9,500.00
$9,590.00
$55,000.00
$40,000.00
$15,000.00
$5,450.00
$12,500.00
$99,870.00
$38.000.00
$803,700.00
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City of Pickering
January II, 2008
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5.0 Interior Finishes and Functional Improvements
TSH was requested to examine the feasibility of improving barrier free accessibility in the building and at
the same time examine the possibility providing Family Changerooms. These Changerooms are of a
unisex nature and allow parents to assist their child of the opposite sex with changing and accessing the
pool.
Because of proposed mechanical system modifications it will be necessary to reinforce the roof structure
for additional mechanical loads. This will require access to the structure from the Changerooms. The
existing 'T' bar ceiling system and ceiling tiles are already in poor condition and require replacing.
At a meeting with City Staff, TSH presented a concept floor plan indicating the feasibility of a Family
Changeroom. The arrangement provides for 2 large unisex change cubicles, lockers, accessible washroom
and a new shower area. The layout utilizes space from the existing overlarge Women's Changeroom and
one of the Staff Changerooms. TSH was requested to prepare a budget estimate for this concept as well as
an optional price to duplicate this layout utilizing space taken from the existing Men's Changeroom
thereby doubling the capacity of the popular Family Changeroom concept.
Following is a general scope of work for rehabilitation of the interior finishes in the Lobby and
Changeroom areas as well as the functional improvements for the Family Changerooms.
5.1 In the Lobby and the main corridor leading to the Changerooms, replace existing VCT flooring
and suspended acoustic ceilings. Repaint all wall surfaces. Add a power door operator to the main
entrance doors to aid accessibility. Budget estimate for this work is $15,400.00. No work has been
planned and budget for in the basement areas at this time.
5.2 Option 1 for refurbishing Changerooms and renovations to accommodate a Family Change
Room. Scope of work includes;
o Removal of existing ceiling tile and steel "T" bar supporting structure and installation of
new
o Removal of existing lockers and benches and installation of new New lockers would be
2-high rather than the existing three high.
o Renovations as required for the new Family Change Room which includes for 2 change
cubicles, barrier free washroom, shower, lockers.
o Existing ceramic tile to floors and walls would be retained wherever possible and made
good where required.
The budget estimate for Option 1 is $136,000.00
. Option 2 is an alternative for renovations to the Changerooms generally is listed above but to
add another Family Change room, barrier free washroom and shower.
The budget estimate for Option 2 is $163,000.00
Pickering is to choose between either Option 1 or Option 2.
5.3 Miscellaneous renovation work is required in the Natatorium. The scope of work for these
renovations is listed following:
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City of Pickering
January 11,2008
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. Repair to existing masonry control joint. Removal of existing aged caulking materials and
installation of new caulking. The deteriorating joints have been contributing to the deterioration
of the brick on the exterior of the building.
. Repair of masonry cracking in several locations.
. Re-painting of interior walls of the Natatorium full height utilizing a high solids paint that will
have vapour retarding capabilities. This will increase the performance of the exterior walls.
The budget estimate the above work in the Natatorium is $20,000.
7.0 Budget Estimate Summaries
GST is not included in the estimates. A building Permit Fee has not been included in the cost estimates. A
contingency allowance of 10% has been included in the cost estimates. Estimates listed under the optional
column have to be added to the overall cost estimate to get a total.
Description Optional Cost Estimated
Cost Estimate Consulting
Estimates Architectural and
Engineering Fees
1.0 Exterior Building $160,000.00 $12,000.00
Rehabilitation
2.0 Re-roofing $190,000.00 $12,000.00
3.0 Pool Filtration System $65,000.00 $6,500.00
Repairs to underwater light $3,000.00
fixtures
Replacement of $40,000.00 $2,500.00
underwater lighting
4.0 Mechanical Upgrades $803,700.00 $65,000.00
5.1 Refurbish Lobby and Main $15,400.00 $2,000.00
Corridor
5.2 Option 1 Changeroom $136,000.00 Option 1 or $23,000.00
Modifications Option 2 to
be selected
Option 2 Changeroom $163,000.00
Modifications
5.3 Natatorium Renovations $20,000.00 $3,000.00
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City of Pickering
January 11,2008
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6.0
Project Implementation and Scheduling
96
Because of the number of aspects to this project, the ideal method of implementation would be toe
prepare a comprehensive tender package and tender the project to General Contractors for a Stipulated
Price Contract.
The estimated architectural and engineering fees indicated above include for preparation of a tender
package which includes drawings and specifications, working with the City's purchasing department to
assemble the front end tender documents, tendering the project, and full contract administration services.
Normal disbursement charges for printing and travel are not included nor is GST.
We have prepared a preliminary planning schedule. There is a minimum lead time of 12 weeks required
for the major mechanical equipment. Roofing work and exterior wall rehabilitation can be underway
shortly after contract award and while the building remains open. The building will have to close while
mechanical systems installations and Change Room renovations are underway (approximately the three
month period of July, August and September.
Preliminary Project Planning Schedule
Tasks Feb. Mar Apr May June July Aug. Sept. Oct
Design
Tender - -
Contract A ward -
Lead Time for
Mech. Equip.
Wall
Rehabilitation
Roofing
Mechanical
System Install
Changeroom
Renovations
Please contact the undersigned if you have any questions on this report or reqUIre any additional
information.
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Barry Knoll, B.Arch., OAA
Manager, Architecture
Associate
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) . Totten Sims Hubicki Associates;,':::,') .-"..
300 Water Street ! I
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Whitby, Ontario, Canada LI Nt),f'2'
(905)668-9363 Fax: (905) 668i:HI \I n'.; .'
E-maIl: tsh@tsh.ca www.t.slr~1\:,_' ~~;:' _ "
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DIVISIOi\1 '1.,. i
engineers
architects
planners
January 25,2008
Mr. Len Hunter, Supervisor
Facilities Operations Culture and Recreation Division
City of Pickering .
One The Esplanade
Pickering, ON
LlV 6K7
Dear Len:
Re: Dunbarton Pool
TSH Project No. 22-32135
We submit herein our proposal to provide the City of Pickering with consulting services for the
preparation of tender documents and construction contract administration services for the retrofit work at
Dunbarton Pool as outlined in our letter/report dated January 11/08. We assume that all work will proceed
as per our report and the project will be tendered to General Contractors and there will be one contract to
manage during the construction administration phase.
Following is the summary budget estimates and summary fees as originally outlined in our report.
We have modified the table to indicate the options that we now know will be proceeding.
Description Optional Cost Estimated
Cost Estimate Consulting
Estimates Architectural and
Engineering Fees
1.0 Exterior Building $160,000,00 $12,000.00
Rehabilitation
2.0 Re-roofing $190,000,00 $12,000.00
3.0 Pool Filtration System $65,000.00 $6,500.00
Repairs to underwater light $3,000.00
fixtures
Replacement of $40,000.00 $2,500,00
underwater lighting
4.0 Mechanical Upgrades $803,700.00 $65,000.00
City of Pickering
January 25, 2008
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5.1 Refurbish Lobby and Main $15,400.00 $2,000.00
Corridor
5.2 Option 1 Changeroom $136,000.00
Modifications
Option 2 Changeroom $163,000.00 $163,000.00 $23,000.00
Modifications
5.3 Natatorium Renovations $20,000.00 $3,000.00
Total $1,457,000.00 $126,000.00
We have included for the Pool Filtration System and the replacement of the underwater lights in the
above summary.
As discussed, to advance the project quickly, the mechanical design phase needs to start first so that the
major equipment can be selected and so that we can establish the structural and roofing modifications to
support some of this equipment on the roof. Normally we would advance all portions of the project
simultaneously. This approach would lead to the shorted time period for the design phase allowing for the
earliest of tender times. The time line for the conventionally approached course of action was indicated in
the following schedule which was induded in our report:
Preliminary Project Planning Schedule (per report dated January 11/08)
Tasks Feb. Mar Apr May June July Aug. Sept. Oct
Design
Tender - ~
Contract A ward -
Lead Time for
Mech. Equip.
Wall
Rehabilitation
Roofing
Mechanical
Svstem Install
Changeroom
Renovations
We discussed the option of pre-tendering and pre-ordering the major mechanical equipment to shift the
lead time from the post contract award period to the pre-tender phase. Following are the schedule
implications of following this course of action. TSH would phase the design services such that
mechanical would be advanced only to a point where the major equipment could be selected and
requirements for structural modifications pinned down. During this phase, the Architectural and Structural
work would also commence. The balance of the mechanical design and coordination would take place
after the end of April when Council approves the budget for the project. By pre-tendering the major
mechanical equipment, Pickering would be required to issue a Purchase Order for its purchase. The
Purchase Order would be assumed by the General Contract and included in their tender once the General
Contract is awarded.
TIM
City of Pickering
January 25, 2008
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Alternative Schedule - Showing Impact of pre-tendering major mechanical equipment and starting
the design work for disciplines other than mechanical at a later date.
Tasks Feb. Mar Apr May June July Aug. Sept. Oct Nov Dec
Design
Mechanical
Pre-tender
Mechanical -
equipment
Lead Time for
Mech.
Equip.(l2
weeks)
Design of
Arch., Struct.,
and Electrical
General Tender - ,......
Contract
A ward -
Wall
Rehabilitation
Roofing
Mechanical
System Install.
Including work
on Pool
Filtration
System
Change room
Renovations
The above schedules indicates that the pool would have to be closed for August, September and October
and possibly the first week in November. Please note that this schedule is quite preliminary and while it
assists the City in planning the programming of the pool, the Contractor and suppliers are the ones who
have control over the schedule during construction. There are many things that could potentially set the
schedule back during the construction phase and Pickering must make contingency plans accordingly.
The above schedule indicates that TSH has split our services such that $50,000.00 would be sprent prior
to the end of April; another $51,000.00 would be expended up to the tender period and $25,000.00 would
be expended for construction administration services. The total fee is $126,000.00. This fee does not
include GST nor does it include for normal disbursement charges for printing of drawings and
specifications, travel, Fax and long distance telephone charges.
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City of Pickering
January 25,2008
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Scope of Consulting Services
TSH will work with Pickering's Purchasing Department in putting the front end of the
documents together. TSH will prepare detailed drawings and specifications for the work. We
will meet with Pickering staff during the course of drawing preparation to review progress
and content. Technical drawings will include architectural, structural, mechanical and
electrical components.
We will attend one meeting with school board officials in order to discuss the project and
plan for any interface requirements.
This project will be formally tendered by the City of Pickering to General Contractors. The
City may want to pre-qualify bidders for this project. We do not include in our fee for
involvement in a pre-qualification process. TSH will respond to queries during the tender
period and prepare a tender evaluation report for the city. We would attend a pre-bid meeting
on site with the bidders to review the scope of work and answer and queries.
TSH will make application for Building Permit to the City's Building Department.
We recommend that an independent roofing inspector be retained for detailed on site roofing
inspections. A cash allowance would be included in the tender documents for this service.
Services during construction would include the following:
· Turn over to contractor sufficient drawings and specifications for the project
· Attend a start-up meeting with the contractor
· Attend bi-weekly on site progress review meetings and periodic field reviews of
the work in progress
. Review shop drawing submissions
· Issue and required instructions, or change notices during construction
· Review and certification of progress payments to the contractor
· Final inspections and start-up reviews of the new mechanical systems
Consulting Services Fee
Our fee for consulting services have previously been indicated in the forgoing.
Preliminary design and design development and detailed drawings up to the end of April
$50,000.00
For completion of drawings and specifications, particularly mechanical and related electrical
and for services up until the tendering phase.$51 ,000.00
For construction phase contract administration services our fee would be $25,000.00
Fees exclude GST and normal disbursement charges.
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City of Pickering
January 25, 2008
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If you have any questions regarding this proposal, please contact the undersigned.
Yours very truly,
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Barry Knoll, B.Arch., OAA
Manager, Architecture
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