Phil Porter Report

8/2/2019 Phil Porter Report

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Drummey Rosane Anderson, Inc.Architects

1111212007

Medford High School Pool Study Report

(Phil Porter Report - Appendix B

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D R A Architects, Inc.141 Herrick RoadNewton Centre, MA 02459Attn: Mr. Paul S. Brown, AIA

Re: Medford High School PoolVisual Inspection andAssessment of Condition

October 08, 2007

D ear M r. B row n,Pursuant to your request I visually inspected the captioned pool and equipment on September 17, andmade a second visit to inspect the interior of one filter tank on September 28, 2007.On the second visit to inspect the filter tank, I observed water spraying from a pin hole leak at the flangesocket pipe joint at the inlet side of the pool heat exchanger.During the process of trying to close valves to isolate the filters from the pool, I shook the piping and theleak intensified. The valves are frozen stuck in the open position, and I had to drain 6 inches of waterfrom the pool to keep water from flowing back into the filters through the pool perimeter system.After inspecting the filter tank, we sealed the pipe joint with a PVC compatible epoxy sealing compoundand stopped the leak.A summary report of observations, comments and opinions is as follows:ObservationsThe pool shell is ceramic tile lined steel reinforced concrete, rectangular, 60 feet by 75 feet, with planand depth profile as indicated on the attached sketch. Water volume calculates to approximately 267,000gallons, and minimum required recirculation rate is 555 GPM. (Massachusetts, 105 CMR 435.06)Pool recirculation is accomplished through three bottom drains and a stainless steel perimeter skimmingand filtered water return system with piping connections to a high rate pressure sand filter system belowdeck at the deep end of the pool. Bottom drain piping is 8 inch cast iron. Filter room piping is 6 inchPVC with cast iron wafer valves. Bottom drain piping is inaccessible for inspection.The filter system consists of two 60 inch diameter carbon steel filter tanks, one 60 inch diameter carbon'steel balance tank, one 15 HP recirculation pump, an automatic chemical controller, and two chemicalfeed pumps.The filters (paddock Pool Equipment Co.) are NSF rated for 780 GPM (maximum). Design flow rate is555 GPM. Pump data plate is illegible, but it appears to be a Marlow model4YSC rated by themanufacturer for 555 GPM at 65 FTDH


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Conunents

D R A ArchitectsMedford High School Pool ReportOctober 08,2007Page TwoPool water is heated by a "full flow" shell and tube heat exchanger with low pressure steam heat source.Pool deck equipment consists of two 1meter diving stands, eight competition starting platforms, fourpairs of exit grab rails and.one life guard stand.

The pool shell appears to be ingood condition with no visible evidence of structural distress or leaks.Tile appears to be in good condition, but grout is deteriorating in the deep water section. There are ruststains around the bottom drain fitting closest to the outside wall which indicate pool water penetrationinto concrete substrate to the reinforcing steel.Diving stands, starting platforms, grab rails and life guard stand all appear to be in good condition, and acontinuity test indicated proper electrical bonding to the perimeter overflow and filtered water returnsystem.The stainless steel perimeter system appears to be in good condition and functioning properly with goodreturn flow at all inlet fittings.

( There are no depth markings as required by Massachusetts Regulations 105 CMR 435.12. When thepool is next drained for cleaning or maintenance, a depth change boundary line will be required at the 5foot slope change to deeper water.Except for depth markings and boundary stripe, the pool, recirculation system and equipment meet allcurrent State requirements, andU S Swimming and Diving rules for competition swimming and onemeter diving.Filter tanks are Y4nch thick carbon steel with plastisol coated interior. The manufacturer reports theywere shipped in 1995. The average life of plastisol lined tanks for indoor pools is 15 years. Visualinspection of one tank interior indicates that the lining is breached and is beginning to separate from thesteel with water pockets behind the lining. There was also evidence of advanced corrosion on the tankhatch cover. I expect pin hole leaks to begin occurring in about three or four years.The recirculation pump seal is leaking and has caused moderate corrosion to the motor frame and moreextensive corrosion to the pump strainer. Pump and strainer should be replaced. If the existing pump canbe reconditioned for not more than $2000 it would be worth holding as a spare.Filter room piping appears to be in good condition, but most of the valves are frozen and inoperable.The steel coupling between the filtered water return pipe and the stainless steel perimeter system supplyconverter is severely corroded and probably close to failme. It should be replaced as soon as possibleand fitted with a PVC wafer valve to permit isolation of the overflow system from the filter system tofacilitate repairs and inspections.


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1. Replace corroded coupling at perimeter system supply converter infilter room. Install PVC wafertype isolation valve at converter. (ASAP) Budget estimate $2500.

D R A ArchitectsMedford High School ReportOctober 08, 2007Page ThreePool water piping to the heat exchanger is 6 inch Schedule 80 PVC, AS1M D 1785, rated for 140degrees maximum. It should be Class 2344-7B CPVC rated for 210 degrees.When I turned off the recirculation pump to inspect the filter tank, the steam supply to the exchangerdid not shut off automatically as it should have. 1had to close the manual valve to shut off steamsupply, and it appears that steam controls are not functioning properly. In the event of a temperaturecontrol malfunction andlor power outage excessively high temperature could cause pipe failure andrupture at the heat exchanger connections. Steam supply and temperature controls should be inspectedby a qualified heating contractor as soon as possible.Remedial Maintenance Recommendations (Listed inorder of priority.)

2. Inspect steam supply and temperature controls to pool heat exchanger. (ASAP) Budget estimate tobe determined by heating contractor.

3. Install new filter system, including balance tank, recirculation pump and strainer, piping andvalves. (3 to 4 years) Budget estimate $80,000. (Fiberglass/resin tanks recommended)

4. Replace steam heat exchanger with plate and frame type hot water exchanger, CPVC piping andisolation valves. (with new filter system) Budget estimate to be determined by heating contractor.5. Recondition pool shell, clean tile, remove and reseal deteriorated concrete and steel around bottomdrain, install depth markings and depth change boundary stripe, and regrout. (5 years) Budget

estimate $60,000.Budget estimates are for materials and labor only and do not include cost for project bidding andadministrative services.r appreciate the opportunity to be of service and will be pleased to answer questions or provideclarification as might be helpful.


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( '~edford HighSchool- Pool ?ludy . - _ . _ - _ .. _ --~quipment Evaluation ~- - -_ . Overall Expected ,-

Condition Remaining(1-5; 1 Is Service Life

Item Description low) !In years) Recommendation Budget-- - -, $30,000,00ilter Tank #1 2 3 to 4 Replace 2 - 3_years

Filter Tank #2 2 3 t o 4 $30,000,00Balance-Ta-nk . _ . T $10,000,003 to 4Recirculation Pump and --.~.-- --Stainer 1 1 $10,000,00.. -~-.- ---~Automatic Chemical Controller 3 5 Routine Service needed $3,500,00

- '--~- -- -::-=--=-::-Chemical Feed Pump #1 3 3 Routine Service needed $1,200,00-~~- -$1,200,00hemical Feed Pump #2 3 3 Routine Service neededPool lining Ceramic Tile 2,5 5


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Drummey Rosane Anderson, Inc.Architects

11112 /2007

Medford High School Pool Study Report

(Kalwall Pricing Inform ation - Appendix C

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N OV -08 -2 00 7 1 3: 08 K R L W F lL L 880 P.01/02KalwalfCORPORATION MAIL ING ADDRESSPost Of f ice B o x 237Maneh ester, NH 0 3 10 51 11 1 C andia R dM anch ester, N H 0 31 0 9 Fax : 603 .. 627 -7905Phon e: 6 0 3 - 62 1 .3 8 6 11 1 1 7 1 0 7 BUDGETEstimate #: B 154,1 1 7Pau l B rownDRA1 4l H errick R oadNewton C enter, M A 0 24'9

P roject: Medf ord H ig h S ch ool.Location: Medford, MAArchitect: D R A

Price IIMATE IUAL COST ~_...........A~ __ "_._......,......--~..;.. ~ .a.a~ _-_ ._ . ._ _ $107 ,500 .00P acked F .O .B . S h ipping P oint, Freigh t Prepa id .We propose to f u r n i s h and deliv er K alwall 2 W' t r a n s l u c e n t panel s y s t e m for:Pool Area - (1) wall rough opening 10 9' ~8 S I S " x 1" ..1 1 W '

(1) wall ro ug h ope nin g 100'7 W ' x 15'11 W '(1 ) wall rough opening 80'2 % " X lS ' -11 W'Notes: 1) Condensation may occu r on and with in th e K alwall panels. W ith proper a,V,A.C. this,situ ation m ay be g reatly 'redu ced or elim inated b ut in n o case however, w ill K alw all assum eany responsib ility sh ou ld su oh a situation occu r. ' ...2 ) P rice is b ased on u sing m ax im u m nu m ber of stand ard 4 f~ 0" w ide panels.'3 ) P ricing is b ased on v ertical su pports b y oth ers b eh ind each batten. .

P ric e lI IMate rlal Cost " ~ _ ~ . _ a ~ _ w _ ~ ~ - ~ - . . _ ._ _ . . ~_ _ . . _. . _ ~ . . _ . _ _ - . _ $131,500.00G ym _ ._1 ) wall rough opening 10 9' -8 5 / & " x 1 5 ' -1 1 W '(1 ) w all r o u g h openin g 6 8 '- 3 % } ) x 15'-11 W '(1 ) wall rough opening 40' -2 W' x 1 5 ' ..1 1 W '

(t)wall r ou g h ' o pen in g 55' -1 1 W' xIS t-1 1 W '(1 ) wall rough openm g 5 6 '- 1 ux 1 5 '1 1 W'(1 ) wall rou gh opening 52'-1 ~"x 15)~11 W 'Notes: 1 ) P riCe is based on using m ax im um num ber of standard 4~-O"wide p a n e l s .

2 ) Pricing is based on vertical SUJWortsby others b eh ind eac h b atten ,G eneral Notes: I) W alls are designed for 25 PS F wind load.

2 ) E ach rough opening h as (3 ) h oriz on tal f alse b attens.3 ) Pricing includes 1 9/16" f tncov ers as p rev io usly su pplied .4) Priced inre fe re nc e to #K67 -281 .5 ) F or Erec ti on us ing Prevaili ng Rates, ADD -Price I w = $73,400.00 Price 1I=$95 ,900 .006 ) F or D em olition u sing P rev ailing Rates.ADD-P rice I = $t4,600 .00 Price 1 I= $19 , 200 . 00

A ll ex po sed alum inum to be Kalw all co rrosion resistan t f inish color selec ted f rom K alw all standard colors.

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NOV-08-2007 13:08 K A L W A L L 880 P.02/02d. .1117 /07Medford H ig h S ch oolMedfo(d,MA

( B1 54 w1 1 7Thermally broken translu cent panels to h av e .0 7 011 super-weathering Wh ite ex terior faces, ..04SI' W hite Type 25interior faces, standard 1 6" T uckerm an g rid pattern and .1 4 'V ' factor, byNFRC Method (certified sy stem "U "value .2 1 ). . ..K a lwall inc lu d es its standard th erm ally b roken clam ptite.alu m inum closu res, A dditional closu re and f lash ing )ex cept as speclflcally noted h erein are not inc lu ded by Kalwall, .P ric ing excludes field l abo r. f in al f as tene rs and c au lk in g b etween edge perime ter and b u ild in g.' .P ric ing is issu ed inaccordance w ith req uirem ents transm itted th rou gh ou r salesm an Charles S h riner; b ut subjectto Kalwall de ta il s and cons truc tion ,Warranty: Standard ( 1 ) y ea r, u nl s a o t h e rw i s e i nd icated he re in .

- . Term s: N et 3 0 from date of invo ice .No retainageallowed.Service ch arg e of 1 112%willa cc ru e a nd become payab le onalUnvoicesnot paid within thirty days from dateof tssue.~ , ......E , L iz ieE s tima tin g Manager (BQ)CC: C ontrol, M cN ich ol, S h rinerTh is Q u ote m u s t b e re fig u re d a fter 3 (1da ys , Deli el ') ' c an b e s~hed ule d only o n r e ce ip t Qffltm order and app roved d rawings . T h i s issu b jeot to ch ang e with ou t notice, .A ll sh ipm ents are F .O .B . ou r plant and S tate S a l o s and U se T ax es are no t included. tfExemption infonmmonlsnot i ss ue d to Ka lwallCor po ra tio n, o r o n f ll e, tax will budded to o u r I n v o ic e ,

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T O T A L P . 0 2


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Technical SummaryKalwall is a composite sandwich; various combinations are pos-sible and test data should be interpreted from this point of view.Consult Sales Service Department for 1 ; ; T 1 ; r clarifigtiOn.

HEAT & LIGHT TRANSMISSION: Listed below are the lighttransmissions, solar heat gain coefficients, and U-factors for some2 3 / 4 " (70mm) thick Kalwall panel face sheet combinations. Others~ H ' h r ht d I . d' th II b k I~7fl~ ~~avala ~ Ig ,Ig e vauesm lcats erma y ro en panes./" d r J . ~b,~FACE SHEET % L l GH l TRA:1ISS10rnol~_ SKYROOF SOLAR HEATGAIN WALL SOLAR HEATGAINCOMBINATIONS COEFFICIENT @OL n ota 3 COEFFICIENT @35L note 3EXTERIORINTERIOR53U" .29/.23 .2 2/.1 4 .1 81 .1 0 r ~~ (~53'U' .29/.23 .22/.14 .18/.10 .05 .53 'v" .291.23 .22/.14 .18/.10 .05COLOR COLOR a u ' u n ' u n 'Un ' u ' 'u' u n " U n 'un 'un u "oote 2 note note 2 note 2 note 2 note 2 note 2 note 2 note 2 note 2 note 2Green\siJBlue Whi te 25 14 5 3 Y : ; J J l " \ ; 0.37 0.18 0.10 0.07 0.11 0.36 0.17 0.10 0.06 0.11Aqua Whi l e 29 17 6 4 ',j:g;/ 6.37 0.19 0.10 0.07 0.11 0.36 0.18 0.10 0.06 0.11Rose Wh ~ e 30 18 6 4 (/1~::A 0.38 0.19 0.10 0.67 0.11 0.37 0.18 0.10 0.06 0.11Ice Blue Whi t e 35 20 8 6 , ; : , ; ; 1 . ! 5 , ; i ; i 0.44 0.22 0.11 0.07 0.12 0.44 0.21 0.10 0.06 0.12GreenishBlue Crysta l 37 20 7 4 t ; ~ M r , _ : , 0.47 0.21 0.13 0.08 0.13 0.45 0.21 0.12 0.08 0.13(hite Whi t e _(20) 15 8 { 5 c ~ ) j 2 ; : ' 0.30 0.16 0.09 0.06 0.09 0.30 0.15 O . O B 0.05 0.09Crystal Whi t e / 35 20 Il121 8 }J;~}~; 0.42 0,23 0.11 0.07 0.11 0.39 0.19 0.10 0.06 0.11Crystal Crys'foJ 50 30 " 15 .. 10 {gg?'; i, 0.55 0.27 0.14 0.09 0.12 0.51 0.23 0.13 0.08 0.12l,.E- - ( J O A A . ' 1 . . - " ' ~ ~ .

NEW Kalwall 4" (100 mm) thIck p an e l s fOr even greatern er gy e nd structural perlormancelF A C E S H EE T % t . J G H T W A LL S OL AR H E AT R OO F S OLA R H E ATCOMBINAT IONS l 1 'W ' JS M I S S I C N GA IN COE FF IC I EN T GA IN COEFF IC I ENTg) (TERIOR INTERIOR .0 8 .1 5 .5 5 .0 8 .1 5 .5 5 .0 8 .1 5 .5 5CO \.OR COLOR 'U' 'U' 'U' 'U . ' U . ' U" 'U' "U' . U "

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Phil Porter Report