36C25220B0015-0005001.pdf

COR LEWIS WATERS

Lewis.Waters@va.gov X66095

Project#676-19-105 Replace Steam Condensate Lines

Tomah VA Medical Center

RFI# RFI-Description Answer Date-RFI

Submitted

Who

Responsible for

Response

AE/COR/ACOR

Status/Comments

1 What is the ICRA level we are to abide by during any time in a facility?

Or is there more than 1 ICRA level?

TYPE ‘C’, LEVEL II,

CLASS II (SEE

ATTACHED)

4/13/2020 COR/AE Amendment #0005

2 Is this project tax exempt? Reference Amendment

4/13/2020 CO Amendment #0005

3 Interior ICRA partitions are called to go from floor to underside of floor slab above per sheet GC103? What is the floor to underside of floor construction?

PER DETAIL 1/GC103 – 3

5/8” STUDS AT 16” O/C

W/ 5/8” DRYWALL

BOTH SIDES

4/13/2020 COR/AE Amendment #0005

4 Poly critical partition is also called out on sheet HA001. What partition type / details are we to use for bidding

– construction?

METAL / WOOD STUDS

AS REQUIRED AT 16”

O/C FOR UNSUPPORTED

AREAS, PLUS DETAIL

1/ HA001

4/13/2020 COR/AE Amendment #0005

5 12’ gates as called out do not allow for larger equipment including trailers, excavators etc. to pass through. Smallest gates which we have utilized are 24’ wide. Provide clarification on this issue and if larger gates are to be utilized

12’ GATES. YOUR

DRIVERS SHOULD BE

ABLE TO NAVIGATE.

4/13/2020 COR/AE Amendment #0005

6 Gates as shown on sheet C501 with sandbag stabilization seem to always fall over and are unusable. Should gates be changed to posts embedded in concrete?

NO. PER NOTE #4 ON

3/C501.

4/13/2020 COR/AE Amendment #0005

7 Piping work as called out between buildings 424 and 452 do not have a

Priority provided. Is this Priority 2 or

Priority 3? Provide clarification of this area

PRIORITY 2 4/13/2020 COR/AE Amendment #00005

8 Area of work between buildings 403 and 424 listed as Priority 2 does not have a gate called out. Is this area to have a 12’ wide gate?

NO. ACCESS CAN BE

CONTROLED WITH THE

EXISTING FENCE /

GATE THAT IS FROM

BUILDING #424 TO

TRAM WALKWAY.

4/13/2020 COR/AE Amendment #0005

9 Existing piping systems as called out on site plans are missing the depth of existing concrete trench boxes (details

5/C502 & 6/C502) below grade.

Provide the following information:

A. Depth of top of existing trench box?

A. VARIES

B. VARIES

4/13/2020 COR/AE Amendment #0005 mailto:Lewis.Waters@va.gov

B. Total depth of existing trench boxes?

10 New concrete pipe trench box (detail

7/C502) is missing the following information which we feel is required.

A. Bottom of concrete trench box below finished grade

AS REQUIRED TO

MAINTAIN PROPER

FLOW FOR

CONDENSATE LINE.

4/13/2020 COR/AE Amendment #0005

11 Piping as called out on sheet HA011 / note 2 calls for direct bury condensate piping. Provide buried depths of all lines to allow for accurate estimate of excavation and backfill required

AT BIDWALKS THE

ELEVATIONS WERE

VIEWED, ELEVATIONS

VARIES

4/13/2020 COR/AE Amendment #0005

12 Per sheet HA011, several condensate piping sections are missing keyed note designation. Provide clarification

/ identification of what type of piping occurs in the following areas:

A. Piping lengths “AA” / “B” / “D” /

“C” / “W”

AT AREAS WHERE NO

‘KEYED NOTES’ ARE

LISTED, ASSUME

CONDENSATE PIPES

AND COVERINGS NOT

TO HAVE ASBESTOS.

4/13/2020 COR/AE Amendment #0005

13 Sheet ED103 / coded note 2: What is the distance from existing source panel?

CONTRACTOR TO

VERIFY, AS REQUIRED.

4/13/2020 COR/AE Amendment #0005

14 Provide confirmation that existing pumps which are called out to be removed do not contain ACM piping covering which is to be removed?

ASSUMING NONE,

UNLESS CALLED OUT.

4/13/2020 COR/AE Amendment #0005

15 Confirm that all existing electrical panels currently in use follow current

NEC?

A VAST AMOUNT OF

THE ELECTRICAL

PANELS HAVE BEEN

UPGRADED IN THE

LAST TEN (10) YEARS.

ALL PANELS WERE

INSTALLED TO THE

NEC STANDARD OF

THAT TIME. ALL

PANELS HAVE HAD AN

ARC FLASH STUDY

DONE IN 2019.

4/13/2020 COR/AE Amendment #0005

16 Demolition shows areas of existing parking lot and streets to have existing painted striping. Provide a site plan reflecting what areas are to have new striping installed, width of stripes and colors?

PLAN ON SHEET CD011,

SCOPE IS FOR

ANYTHING THAT WAS

DAMAGED OR

REMOVED AND SPEC

SECTION 321723 FOR

MARKING

REQUIREMENTS.

4/13/2020 COR/AE Amendment #0005

17 Sheet CD011 existing sidewalk removal / replacement on 3rd Street.

This area shows sidewalk and crosswalk? Please confirm? Is there to be new ADA tactile pavers to be installed in sidewalk on both sides of crosswalk? Provide specification of

ADA tactile paver if to be installed, type of installation and new striping for sidewalk. See question #16 above

YES. NO ADA TACTILE

PAVERS ON WEST SIDE.

YES, FOR THE EAST

SIDE. SEE ABOVE

ANSWER.

ENSURE THAT WHEN

REPLACING SIDEWALK

– STEAM ACCESS

COVERS THEY HAVE

NO MORE THAN ¼”

ELEVATION

DIFFERENCE, PER ADA

CODE. REUSE COVERS

AS POSSIBLE AND

REPLACE AS REQUIRED

4/13/2020 COR/AE Amendment #0005

18 Detail 7/C502, pipe support system:

Can Unistrut systems be utilized in lieu of support system as shown?

WE WANT CONTINUITY

FOR THE SYSTEM.

HOWEVER, YOU MAY

SUBMIT A PROPOSAL

FOR REVIEW

4/13/2020 COR/AE Amendment #0005

19 Specification Section 21 13 13 Wet

Pipe Sprinkler Systems / 1.1 / B calls for portions of building 404 to have entire Attic Space and partial head relocation / replacement in the

Mechanical Basement Room. Provide the following:

a. Existing / as-built building 404 sprinkler drawings

b. Existing building 404 hydraulic calculations – information.

c. Confirm the there is sufficient water pressure to add the areas of entire Attic Space and partial head relocation / replacement in the

Mechanical Basement Room to the existing system without the addition of a fire pump

PLEASE OMIT – NOT

PART OF SCOPE.

4/13/2020 COR/AE Amendment #0005

20 The specifications appear to have an unaltered Division 23 09 specification. Is any Division 23 09

(DDC) work required on this project?

SPECIFICATION

SECTION WILL BE

REDUCED

4/9/2020 COR/AE Amendment #0005

21 If so, the specification mentions new

ECC among other things, but it also mentions connection to the existing system. Is a new system desired for this project or would just utilizing the existing Metasys system be acceptable?

SPECIFICATION

SECTION WILL BE

REDUCED

4/9/2020 COR/AE Amendment #0005

22 Does the temporary PC piping need to be insulated? If so, with what?

TEMPORARY PC IS NEW

PIPING AND WILL

REQUIRE INSULATION

PER SPECIFICATION

230711.

4/8/2020 COR/AE Amendment #0005

23 Will the direct buried pipe come pre-insulated?

YES, PER

SPECIFICATION 336300

4/8/2020 COR/AE Amendment #0005

24 I read the specs as the only pipe considered to be in an exterior location would be the piping under the sidewalk. The only insulation specified for this is polyisocyanurate which lists a thickness up to 1-1/4" pipe. What thickness would you like on piping larger than 1-1/4"?

POLYISOCYANURATE

INSULATION IS

LIMITED TO EXTERIOR

USE AND THAT SIZE.

OTHER MATERIALS

LISTED IN THE TABLE

CAN BE USED EITHER

FOR ABOVE GROUND

OR BELOW GROUND AS

NOTED WITH THE

PROPER JACKETING

MATERIAL.

4/8/2020 COR/AE Amendment #0005

25 Is the insulation on the piping located under the sidewalk the only insulation to get an additional jacket on it (other than ASJ)?

YES. DIRECT BURIED

PIPING HAS AN

EXTERIOR JACKET AS

PART OF THE

ASSEMBLY

4/8/2020 COR/AE Amendment #0005

26 Does 3rd Street have to be passable at all times, day/night for emergency vehicles and for personnel during construction process? At the site visit there was a comment that it would be opened but the plan indicates otherwise.

YES. 100% OF THE

TIME. YOU MAY HAVE

ROAD WIDTH

REDUCED WITH

SIGNALMEN ON

EITHER SIDE DURING

WORK AT THE ROAD

LOCATION. NOTE THAT

AT ALL TIMES THE

ROAD MUST HAVE

ENOUGH WIDTH AND

STRENGTH TO HOLD

FIRE TRUCKS,

CONCRETE TRUCKS,

AND TRACTOR

TRAILERS. AT NO TIME

SHALL THE THIRD

STREET ROAD BE

IMPASSABLE

4/14/2020 COR/AE Amendment #0005

27 B424-Cafeteria has dumpsters located on the East side of the building during the construction process. This area will not be accessible for refuse disposal. Can the dumpster be relocated to an accessible location for their accessibility for refuse disposal pickup?

NO, THIS IS A LIVE

KITCHEN AREA AND

MUST MAINTAIN

ACCESS TO

DUMPSTERS. GC TO

COORDINATE WORK /

REFUSE SCHEDULE AS

NOT TO IMPEED

KITCHEN STAFF.

4/14/2020 COR/AE Amendment #0005

28 Many of the existing concrete removable covers are severely damaged. Should replacement be included in the cost? If so, the concrete covers that are not exposed due to being covered by asphalt and or dirt and gravel be added as unforeseen if damaged or should a specific dollar value allowance be included?

YES. REUSE AS

POSSIBLE, REPLACE AS

REQUIRED.

4/14/2020 COR/AE Amendment #0005

29 Building 424 to 452:

The drawing (CO11) of the pipe trench is referring to detail 7/502.

This indicates a new concrete pipe trench. If this is correct, there are (2) vaults located outside of B424 and the steam supply and return appear to split the two vaults. There is not (5) feet between the two vaults for a new concrete pipe trench, or does the new concrete pipe trench only go from curb to curb and then the line is to be direct buried before and after the curbs?

NEW VAULT TO BE

REDUCED IN SIZE TO

BE LOCATED BETWEEN

EXISTING ELECTRICAL

VAULTS

4/14/2020 COR/AE Amendment #0005

30 Parking access by some of the tramway hatches is going to be necessary for demolition and replacement of the steam return lines.

Will parking be allowed to cone off up to (4) parking stalls at these locations, to perform work necessary to complete the job?

YES. SUBMIT PLAN

PROPOSALS

4/14/2020 COR/CO

31 Can the construction wash out area be relocated to the other side of the work area, next to the parking area of

B415? There are vaults beneath the area designated on the plans.

PROVIDE PROPOSED

PLAN ON 8 ½ x 11.

4/14/2020 COR/AE Amendment #0005

32 Refer to drawing CO11-new pipe trenches. There are no footages for length or set elevations to determine grade/ top or bottom of the new pipe trenches. Please provide.

OPPORTUNITY FOR

VISUAL INSPECTION OF

CRAWL SPACES

DURING BID-WALKS,

CONTRACTOR TO

DETERMINE

33 During the site visit the COR brought up to install 36" X 36" access doors to assist with abatement and removal of the steam condensate lines. Please provide specific locations and specifications for bidding.

THE COR SAID THAT,

SOMETHING COULD

POSSIBLY BE DONE

WITH THE EXISTING

BUILDING VENTS AT

THE BUILDING CRAWL

SPACE. HOWEVER, IF

ANYTHING IS DONE,

AN ACCESS OF 36” x 36”

WOULD NEED TO BE

USED. THE DESIGN BY

CONTRACTOR, WITH

CALCULATIONS AND

DRAWINGS STAMPED

BY REGESTERED

PROFESSIONAL

ENGINEER. ACTION

SHALL BE

CATEGORIZED AS

CONTRACTOR MEANS

AND METHODS.

4/14/2020 COR/AE Amendment #0005

34 Provide additional information for removal and reinstallation of any sprinkler pipe and sprinkler heads including footage and quantities

PLEASE OMIT – NOT

PART OF SCOPE.

4/14/2020 COR/AE Amendment #0005

35 Refer to drawing MP011, B25, Detail

4/MP303. This detail is of B36 basement plan. Is a detail of B25 available

SEE UPDATED

DRAWINGS.

4/14/2020 COR/AE Amendment #0005

36 Is Coring acceptable through crawl spaces at (4) locations below grade, to access the crawl spaces, and to be able to move longer length pipe into the work areas? Locations would be re-bricked and waterproofed when work in the areas are complete.

NO 4/14/2020 COR/AE Amendment #0005

37 The steam tunnel from B415 to B403, where it enters B403 is under the front entrance of the building. The concrete sidewalk at this location does not appear removable. The site-specific plan calls for this location to determine if the area would have to be replaced, or if there is enough room under the walk area to access the site, to perform work without demolition of the walkway.

OPTION TO REVISIT

SITE WITH PROPER PPE

AND EXAMINE FROM

CRAWL SPACE UNDER

BUILDING 403. MUST

BE DONE BEFORE 3PM,

04-28-2020. PLEASE

EMAIL DATE AND TIME

REQUEST TO LEWIS

WATERS

4/14/2020 COR/AE Amendment #0005

38 On the South-East side of B416 the loading dock has been extended and covers the PC and HPS lines. Is it the

GC's responsibility to remove or will the loading dock extension have to be rebuilt, and if so, by whom?

FULL ACCESS UNDER

BUILDING 416 TO GET

TO THE SOUTH SIDE OF

BUILDING. ALL

EXISTING PARKING

AND ROADS TO BE

DEMOED AND

REPAIRED BY GC, AS

REQUIRED

39 Please confirm if Ultrasonic Testing

Per 136.4.6 of section B31.1 is acceptable in lieu of

Radiography. Due to the radiation source required and proximity to an occupied area and walkway. Areas would need to be shut down during any tests.

MEANS AND METHODS

BY GC AS LONG AS

REQUIRED

INFORMATION IS

ATTAINED,

DOCUMENTED, AND

VERIFIABLE.

4/16/2020 COR/AE Amendment #0005

40 Does 3rd Street have to remain open at all times (day/night) for emergency vehicles and personnel during construction?

YES. 100% OF THE

TIME. YOU MAY HAVE

ROAD WIDTH

REDUCED WITH

SIGNALMEN ON

EITHER SIDE DURING

WORK AT THE ROAD

LOCATION. NOTE THAT

AT ALL TIMES THE

ROAD MUST HAVE

ENOUGH WIDTH AND

STRENGTH TO HOLD

FIRE TRUCKS,

CONCRETE TRUCKS,

AND TRACTOR

TRAILERS. AT NO TIME

SHALL THE THIRD

STREET ROAD BE

IMPASSABLE

4/16/2020 COR/AE Amendment #0005

41 Building 424 to 452

A. Is this to be direct buried or will it be in box conduit? B .The HPS pipe appears to run above the PC line, are we to replace both pipes?

A.PER SECTION 5/C502,

NEW CONCRETE PIPE

TRENCH WITH LID.

B.HPS AND PC PIPING

ARE ROUTED STACKED

LEAVING BLDG 424.

THE HPS SHOULD NOT

NEED TO BE

REPLACED. NEW PC

PIPING CAN BE

INSTALLED ABOVE HPS

IF REQUIRED

4/16/2020 COR/AE Amendment #0005

42 On Sheet MP011 building No. 36, No. 40 both show details on sheet

MP304.

a. Building No. 36 appears to be on sheet MP303 detail 4. Please confirm this is correct. 40.appearsto be on

MP303 detail 5. Please confirm this is correct.

THIS IS CORRECT. SEE

MODIFIED DRAWINGS

4/16/2020 COR/AE Amendment #0005

43 On sheet MP011 building No. 25 basement detail is shown to be on

MP303 detail 4. I believe sheet

MP303 detail 4 is of building No. 36.

Is there a detail of building No. 25 basement?

SEE MODIFIED

DRAWINGS

4/8/2020 COR/AE Amendment #0005

44 Is coring acceptable through crawl spaces below grade to access the crawl spaces. These cores would be to

NO 4/8/2020 COR/AE Amendment #0005 move longer lengths of pipe into work areas?

45 ¾” LPR line between buildings No.

36 and No. 40 is shown to be demolished. Can this line be capped and abandoned in place?

NO. THIS LINE IS

ASSUMED TO HAVE

ACM.

4/8/2020 COR/AE Amendment #0005

46 Building No. 36 – Is the intention to run new PC line to pump inside building or to run new PC lines outside tie into existing and reconnect new pump to existing lines?

RUN NEW PC FROM

NEW PUMP INSIDE

BLDG 36.

4/8/2020 COR/AE Amendment #0005

47 Does building No. 423 have any new lines running to it, if so, please provide details.

RUN NEW 1-1/4” HPR

PIPING FROM BLDG 423

PER MP011

4/8/2020 COR/AE Amendment #0005

48 Building No. 403 Basement plan on

MP301 detail 4 does not indicate a termination point of the vent line.

ROUTE UP IN CHASE

AND TERMINATE

ABOVE GRADE AT

EAST WALL

4/8/2020 COR/AE Amendment #0005

49 Building No. 403 basement plan on

MP301 detail 4 does not show continuation of PC lines from sheet

MP104

2-1/2” PC PIPING FROM

BLDG 404 SHOULD BE

ROUTED AROUND

WEST SIDE OF

MECHANICAL ROOM

AND ROUTED TO 5” PC

MAIN. SEE MODIFIED

DRAWINGS

4/8/2020 COR/AE Amendment #0005

50 Hanger detail 5/M051 shows both clevis hanger and roller yoke hanger.

Specification 23 05 10 2.11 J 2 mentions both clevis and roller hangers. Detail on M401 and M402 show roller hangers. Are roller hangers required for all steam and condensate piping?

ALL NEW PC PIPING

SHOULD HAVE ROLLER

HANGER PER

SPECIFICATION

4/16/2020 COR/AE Amendment #0005

51 What is Building No. 23 footing depth in relationship to the new PC pipe?

FOOTING IS BELOW

PIPING

4/16/2020 COR/AE Amendment #0005

52 Drawing MP104 shows a new 2-1/2” condensate pipe entering B403 basement Mechanical Room

(4/MP301) from the North, but detail

4/MP301 does not show the continuation of that pipe. Please advise.

SEE RESPONSE TO

QUESTION 48

4/16/2020 COR/AE Amendment #0005

53 What are the specifications for the condensate vent piping off the condensate return units?

SEE SPECIFICATION

232213

4/16/2020 COR/AE Amendment #0005

54 Detail 4/MP301 shows a 3” vent up in chase. Where does that continue to?

SEE RESPONSE TO

QUESTION 47

4/16/2020 COR/AE Amendment #0005

55 How is the condensate system expected to be maintained when the new condensate units are in the same location as the existing units? What is the maximum allowable shutdown

CONDENSATE CAN BE

DUMPED INTO THE

DRAIN FOR THE

REQUIRED UNIT

SWITCH-OVERS

4/16/2020 COR/AE Amendment #0005 timeframe? Can we dump condensate to a drain for a period of time?

56 The drawing does not indicate any condensate tie-in points other than in the mechanical rooms. Please provide quantities, sizes and locations of all condensate tie-in points for terminal equipment, drip traps, etc. Do any of these associated tie-ins require rework/replacement of steam traps or steam trap assemblies.

THE PROJECT SCOPE IS

TO REPLACE

CONDENSATE PUMP

AND PIPING FROM

BUILDING TO

BUILDING.

CONDENSATE PIPING

WITHIN THE BUILDING

ARE NOT TO BE

DISTURBED.

4/16/2020 COR/AE Amendment #0005

57 Detail 2/M501 depicts a steam trap assembly. Please advise where this is applicable on the project.

DETAIL IS FOR

REFERENCE AS

NEEDED. BLDG 40 AND

25 HAVE HPR GRAVITY

CONDENSATE PIPING

THAT MAY HAVE TRAP

IN LINE.

4/16/2020 COR/AE Amendment #0005

58 Detail 3/M501 depicts F&T steam trap assembly. Please advise where this is applicable on the project

DETAIL IS FOR

REFERENCE AS

NEEDED. BLDG 40 AND

25 HAVE HPR GRAVITY

CONDENSATE PIPING

THAT MAY HAVE TRAP

IN LINE.

4/16/2020 COR/AE Amendment #0005

59 Detail 8/M501 depicts HPS & MPS steam trap discharge in pumped condensate. Please advise where this is applicable on the project.

DETAIL IS FOR

REFERENCE AS

NEEDED. BLDG 40 AND

25 HAVE HPR GRAVITY

CONDENSATE PIPING

THAT MAY HAVE TRAP

IN LINE.

4/16/2020 COR/AE Amendment #0005

60 MP011 indicates direct bury (Note 3)

East of Building 403 and then in

Tramway (Note 2). A detail drawing is not included for Building 424. Is the pipe located in a Tramway at some point or is the pipe within the footprint of Building 424 intended to be in the crawl space? If so, please provide a detail of the transition between the direct bury pipe and above ground pipe. Please provide a detail/drawing of Building 424 similar to detail of the other buildings

THE KEYED NOTE #2

SHOULD OMITTED.

THE PIPING GOES

FROM DIRECT BURIED

TO THE CRAWL SPACE

OF 424.

4/16/2020 COR/AE Amendment #0005

61 Please provide location and detail of where and how pipe from Building 23 transitions from overhead to underneath the Tramway

LOOKING NORTH

TOWARDS TRAMWAY

AT WEST END OF

BUILDING 401. PIPES

TURN DOWN TO

TUNNEL BELOW

TRAMWAY

62 Provide a detail of tie-in points/piping arrangement at steam pit East of

Building 416 (Point C) Profile on

M403 does not provide enough information.

THERE IS NO EXISTING

INFORMATION FOR

PIPING WITHIN STEAM

ACCESS STRUCTURE.

THE PC PIPING PASSES

THROUGH PIT AT A

FIXED POINT. USE AS A

REFERENCE EACH

PENETRATION.

CONTRACTOR HAS THE

OPTION TO REVISIT

SITE.

4/16/2020 COR/AE Amendment #0005

63 Please provide profile of direct bury pipe South of Point C serving

Buildings 36 & 40.

THERE IS NO EXISTING

INFORMATION TO

DETERMINE THE

PROFILE OF THE

DIRECT BURIED PIPING.

THE PIPING ELEVATION

IN THE PIT AT POINT C

AND ACCESS PIT AT

BLDG 36 CAN BE USED

AS A REFERENCE.

CONTRACTOR HAS THE

OPTION TO REVISIT

SITE.

4/16/2020 COR/AE Amendment #0005

64 MP011 – Please provide drawing/detail indicating how direct bury pipe is routed to serve area within Building 36 (Refers to Detail

2/MP304 which is actually shown on

4/MP303). No detail of the footprint of the building is provided. Pipe is shown running within the building footprint, but site survey appears to indicate pipe actually runs between

Building 36 and 40.

NEW PIPING FROM

BLDG 40 TO BLDG 36 IS

HPR AND IS TO BE

DIRECT BURIED. NEW

PIPING FROM

CONDENSATE PUMP IN

BLDG 36 PUMP IS

ABOVE GRADE AND

DROPS INTO PIT

OUTSIDE BLDG 36.

NEW HPR AND NEW PC

CONNECT WITHIN PIT.

CONTRACTOR HAS THE

OPTION TO REVISIT

SITE.

4/16/2020 COR/AE Amendment #0005

65 Please provide detail of piping located in the pit on the West side of Building

36.

THE PIPING IS NEW

FROM BLDG 40 AND

WILL CONNECT TO THE

NEW PC PIPING FROM

BLDG 36. CONTRACTOR

HAS THE OPTION TO

REVISIT SITE.

4/16/2020 COR/AE Amendment #0005

66 Please provide profile of direct bury pipe between Buildings 424 & 452

EXISTING DIRECT

BURIED PC PIPING IS

TO BE REMOVED.

CONTRACTOR TO

PROVIDE NEW TUNNEL

FOR NEW PC PIPING

AND EX. HPS PIPING.

FOLLOW EXISTING PIPE

ELEVATIONS/PROFILE

67 Are the Tramways open to the crawl spaces or are they sealed off and requiring cutting/coring?

OPEN ACCESS. 4/16/2020 COR/AE Amendment #0005

68 Is the pipe located within the footprint of Building 425 located in a crawl space? Please provide a detail/drawing for the Building 425

IF REFERING TO BLDG

452, PIPING IS ABOVE

GRADE IN CRAWL

SPACE.

4/16/2020 COR/AE Amendment #0005

69 MP011 identifies direct bury piping between the pit East of building 41 to the Southeast corner of Building 41.

Drawing CD011 does not identify any work there. Please advise

IF REFERING TO BLDG

416, PORTION OF AREA

SHOULD BE

REMOVED/EXCAVATED

WHERE PIPING IS

BEING REMOVED,

REFERENCE KEYED

NOTE #4. DRAWING

CD-011 WILL BE

MODIFIED.

4/16/2020 COR/AE Amendment #0005

70 Please provide detail/drawing of pipe routing from basement of Building 23 to where pipe exits building into

Tramway. Pipe is overhead at that location.

PIPING IS OVER HEAD

FROM TRAMWAY INTO

BUILDING 23. IN An

OFFICE, THE PIPING

DROPS IN A CAVITY

WALL DOWN TO THE

BASEMENT. SEE

PICTURE BELOW.

4/16/2020 COR/AE Amendment #0005

71 Will grass seed be acceptable in place of sod?

SEE SPECIFICATION 32

90 00

4/16/2020 COR/AE Amendment #0005

72 Would we be able to stage material near working location? For example, by Building 23

NO. MOVE REQUIRED

DAILY MATERIALS IN

THE MORNING, CLEAN

SITE AND ACCESS

AREAS AT END OF

WORKDAY.

4/16/2020 COR/AE Amendment #0005

73 The section between B452 and B424 on drawing C011 appears that road can be shut down for a period of time, dumpsters moved, and traffic blocked off with construction fences and gates, etc. However, on the walk through, it was indicated that no such shutdown will be permitted. Please clarify

NO, THIS IS A LIVE

KITCHEN AREA AND

MUST MAINTAIN

ACCESS TO

DUMPSTERS. GC TO

COORDINATE WORK /

REFUSE SCHEDULE AS

NOT TO IMPEED

KITCHEN STAFF.

4/16/2020 COR/AE Amendment #0005

74 Sheet C011 shows the steam trench stopping at the front steps of B403 and MD011 and MD104 show the piping remove / replace at the inside of the foundation wall. What is the intent for the piping under the steps to the entrance of B403? To access the piping, all of the concrete steps/footings will need to be removed and replaced. Please advise.

OPTION TO REVISIT

SITE WITH PROPER PPE

AND EXAMINE FROM

CRAWL SPACE UNDER

BUILDING 403. MUST

BE DONE BEFORE 3PM,

04-28-2020. PLEASE

EMAIL DATE AND TIME

REQUEST TO LEWIS

WATERS.

75 3rd street in front of B403 has fence across the street. Can this street be shut down, or a temporary side road be constructed so the road can be crossed with the new piping and trench re-installed?

NO. 100% OF THE TIME.

YOU MAY HAVE ROAD

WIDTH REDUCED WITH

SIGNALMEN ON

EITHER SIDE DURING

WORK AT THE ROAD

LOCATION. NOTE THAT

AT ALL TIMES THE

ROAD MUST HAVE

ENOUGH WIDTH AND

STRENGTH TO HOLD

FIRE TRUCKS,

CONCRETE TRUCKS,

AND TRACTOR

TRAILERS. AT NO TIME

SHALL THE THIRD

STREET ROAD BE

IMPASSABLE. A SIDE

ROAD MAY BE

CONSTRUCTED, A

PLAN AND SECTIONS

MUST BE STAMPED

AND SUBMITTED BY

AN LICENCED

PROFESSIONAL

ENGINEER AND

APPROVED BEFORE

ANY ALTERATIONS

ARE DONE

4/16/2020 COR/AE Amendment #0005

76 In the section from B415 to B403, the temp fencing shows 11 double gates, is that many required?

I COUNT SEVEN (7)

PLUS THIRD STREET

4/16/2020 COR/AE

77 MP011 Detail called out for Building

25 (4/MP303) is wrong detail. That is for Building 36. I don’t see a detail for Building 25. Please provide one

SEE RESPONSE TO

QUESTION 47.

4/16/2020 COR/AE Amendment #0005

78 Drawing MP011 indicates a detail for

Building 415 – 1/MP304. The drawing/detail does not exist. Please provide.

SEE UPDATED

DRAWINGS

4/16/2020 COR/AE Amendment #0005

79 The concrete tunnel section covers are deteriorated. What is the intend for replacement?

ENSURE THAT WHEN

REPLACING SIDEWALK

– STEAM ACCESS

COVERS THEY HAVE

NO MORE THAN ¼”

ELEVATION

DIFFERENCE, PER ADA

CODE. REUSE COVERS

AS POSSIBLE AND

REPLACE AS

REQUIRED.

4/16/2020 COR/AE Amendment #0005

80 Please confirm if Ultrasonic Testing

Per 136.4.6 of section B31.1 is acceptable in lieu of Radiography.

Due to the radiation source required and proximity to an occupied area and

TESTING SHOULD NOT

BE REQUIRED. THE

PIPING IS EITHER

ACCESSIBLE OR NEEDS

TO BE EXCAVATED TO

walkway. Areas would need to be shut down during any tests.

BE

REMOVED/REPLACED.

81 Building 424 to 452

A. Is this to be direct buried or will it be in box conduit? B .The HPS pipe appears to run above the PC line, are we to replace both pipes?

SEE DETAIL 7/C502. 4/16/2020 COR/AE Amendment #0005

82 The plans do not indicate the requirement for Spec Section 23 09

23 Direct Digital Control System.

Please advise if programming is to be included in the bid? Is the current system controlled by DDC?

PROGRAMMING IS TO

BE INCLUDED;

SPECIFICATION

SECTION 230923 WILL

BE REDUCED.

CURRENT SYSTEM IS

LOCAL CONTROL.

4/16/2020 COR/AE Amendment #0005

83 Is the intent to build a wall and install a door around the fire rated doors that lead to the steam pipe basement areas? See note #9 on page GC103.

PROVIDE POLY

CRITICAL BARRIER AT

MECHANICAL ROOM

ACCESS DOORS.

4/17/2020 COR/AE Amendment #0005

84 How many monitors will be needed for a 20,000 square foot building? See note #4 on CG103

PER KEYED NOTE#4 ON

CG103, 3 MONITORS

WOULD COVER UP TO

10,000 SF. FOR AN

ADDITIONAL 10,000 SF,

AN ADDITIONAL 3

MONITORS SHOULD BE

PROVIDED.

4/17/2020 COR/AE Amendment #0005

85 The section between B403 and B424 is currently a direct bury pipe. On the civil drawing C011, it is showing your piping going back into a new concrete trench refer to 7/C502 and similar to your C/M401 drawing.

However, on your drawing MP011, that section is shown as Note 3 and

Note 4. Returned to direct bury piping, plus, how would you do that if the existing 4” HPS remains in the ground?

SEE RESPONSE TO

QUESTION 40. PIPING

SHALL BE IN

CONCRETE TRENCH.

SEE MODIFIED

DRAWINGS.

4/17/2020 COR/AE Amendment #0005

86 How can we exhaust the air out of the buildings and tram way? See note #6 on CG103

SEE DRAWINGS HA101

AND 102 FOR EXHAUST

FAN LOCATIONS AND

DECONTAMINATION

SUITE LOCATIONS.

4/17/2020 COR/AE Amendment #0005

87 Will silt fence be needed between

Buildings 415 and Building

403? There will be no excavation at these areas. Just removing the concrete covers

YES, SILT FENCE

REQUIRED TO

MITIGATE ANY SOIL

DISRUPTION FROM

EQUIPMENT.

4/17/2020 COR/AE Amendment #0005

88 Would silt sock be an approved replacement for silt fence?

THIS IS CURRENTLY

NOT IN THE VA

SPECIFICATIONS.

ALTERNATE METHODS

AND DEVICES

SUBMITTED TO VA COR

FOR APPROVAL PRIOR

TO CONTRACT AWARD.

4/17/2020 COR/AE Amendment #0005

Sketches

Question

Question 61

Question 69