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Home My WebLink AboutOES 06-08 CiUI c# REPORT TO COUNCIL on t) '"J 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: o "I t t! ' () 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 \) () UL 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: I II . ;> 7 ~) ,-} 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: , /,' , ~ le r' Supervisor, Facilities Operations EveretH3untsm Director, Operations & Emergency Services ./?-~~ ~~~..:--._":::==_--- Gillis Paterson Director, Corporate Services & Treasurer .---1'-- /' / "', /----~:-: ) /. d::-::"~..'. //~~/ ~~~^'~ -.-} , ....' " 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 r) 11 b L, SRlg Copy: Chief Administrative Officer Recommended for the consideration of Pickering Ci~'t Co~, "I ;, CORP0227-07/01 revised 8S SHEPPARD o AJ < fTl 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 '."-, o <( o 0:::: ~ [, I I ~ if) W l- I 5; I I I I I //.. V;/--- / . IIH . ,'. ..... ." J ". AI IA\...Hf"H:N I 1I._.f:::_ I U r-",(, r' \' !( ! \ ru",\,- v, \ CE c( ( Tollen Si I11S Huhicki Associatcs 1(]O Watn Street Whithy. Ontario. Canada LI N 9J2 (l)OS) 668.l)J03 Fax: (90S) (168-(]22I Ie-mail: hh0'tsh.Cil \\ \\\\ .tsh.ca 86 engineers architects planners January 11,2008 H n 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 2_ TO REPORT # C:: E~, (j C \,:u...q co c'~ \ \ ) City of Pickering January 11,2008 il 7 0, 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. (,0 :~-'C_~' 2 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 " 'I :1 ~ " I 2- cE'--:-:o c~, 3 t-),,, ( ~!' ~ , <, "\"- _J \ \ pn I.) ,,--' 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. 11M \X\. ( \E Lt j E C ( Cifs 4 City of Pickering January 11,2008 F-, l C~\. '- I (~I ("1 o / 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 tIH City of Pickering January 11,2008 r\!IACHI\ltl'\J i if \-YI_ C) c.::. E :-::, C(._.: cf 5 9 ()- " \. 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. 11M City of Pickering January 11,2008 9 1 'i-\\.~'-': ; " C ,,: 02 i)'\.. (\ ~ C.. .) <.:. c\. \ \ 6 · 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 11M City of Pickering January 11,2008 hfIACHIVitl~: it \'<:;, ~J e.:.. i (/.:::: ,_,> L_ cc c ~ \ \ \ 7 92 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 Tnt I fl. City of Pickering January II, 2008 I.) .~ / '-' , ! .2_ C:,E f)C~(jC t T,{ \\ c~ C)~.,. 8 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 11M City of Pickering January II, 2008 .'~\ L C;Cl c\}~_ c::t~:; 0 b 0.. C8 cl c-\: l\ 9 q4 / . 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: VH ,L Cje: cC: c\' \ \ City of Pickering January 11,2008 C) t:)"" ./ , 10 . 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 VH City of Pickering January 11,2008 2- I\Y' ( )c \ \ Of: \ \ (C 02~ 11 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. ~ Barry Knoll, B.Arch., OAA Manager, Architecture Associate VH I \I , '7 . TIH C'b cB M! i ACH i'vl Er\i I H -:::::~_ f() rU:rOR-j hi: ~,;! r' ~.;) I~[;.J (':1.1 \ ()L. L~ IIICHI) f) c, c.\C" _C> I 'I ) . Totten Sims Hubicki Associates;,':::,') .-".. 300 Water Street ! I ~: . ~ 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\:,_' ~~;:' _ " ,A.iLl Wit:: i.~ Hi:Cf:EAfVI'\ij 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 i..' i '2 '_J FX,\...C,\C c~ C~ ee! 2 9H 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 99 F\ , rh....l' .', ~-S 3 I t i . \=:'t~c\~ '...1 C~.~. c E~ <:'-:, C ..-:::' e,l c,8 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. Tnt City of Pickering January 25,2008 r~i ~ _~..J \:~x:. Cr:- c c:.=", L~ C~ ~~~ ~~ C8 4 , {., "1 i .J I, J 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. VH City of Pickering January 25, 2008 :2 '-..J rC~ CjE' 1 U 1 o(::S;' ClQ -- 08 5 S D-( S If you have any questions regarding this proposal, please contact the undersigned. Yours very truly, bAJ~4 Barry Knoll, B.Arch., OAA Manager, Architecture BK/bwk tIH