AS06_Amend 0004__Pre-Bid Site Walk QAs_Reno Dialysis.pdf

PRE-BID SITE VISIT QUESTIONS

CONSTRUCTION – RENOVATE DIALYSIS

PROJECT #: 636A8-24-001

Question 1 – Sheet 1-T8 Detail 1 shows 1-1/4” EMT conduit between cable trays and outlets. Sheet 1-T12 Technology schedule equipment abbreviation SC-IO-W shows 1” routed above the nearest accessible ceiling. Please confirm that 1" EMT is acceptable for all wall outlets, or clarify direction.

Answer 1 – 1-1/4" conduit is correct, sheet 1-T12 will be revised in addendum.

Question 2 – Would like some clarification from design team per sheet notes: #1 on plan 1-H2.

"Linnear diffuser air deflectors are to be salvaged prior to demolition", with no other direction as what to do with them. And what exactly does prior to demo imply, they would come down in the demo phase. Please advise.

Answer 2 – "Hand over to owner" clarified in addendum.

Question 3 – Does the VA have a location for the crane if one was needed. The (2) exhaust fans on the roof are not that large so possibly can take up elevator, the stacks will be a bigger issue.

Answer 3 – A/E does not foresee the need for a crane, but if one is needed the parking lots can be used for it, but only if written approval is given by the VA CO/COR

Question 4 – Sheet 1-T11 detail #3 Technology bonding riser diagram. This detail appears to show the SC-GND-1 (SBB) in TR-5W07 as new. Sheet 1-T7 detail #1 existing telecom room detail shows that SBB is existing to remain. Which detail is correct?

Answer 4 – The secondary grounding bus in TR-5W07 is existing to remain. Grounding riser will be revised in addendum.

Question 5 – Sheet 1-T11 detail #3 Technology bonding riser diagram. Is the indicated 350 kcmil Telecommunications Bonding Backbone existing or new? If this is being provided under this project, is there an approximate distance from the SC-GND-1 in TR-5W07 to the existing main electrical ground bar (PBB) in the main electrical room and from the main electrical room PBB to the electrical entrance intersystem bonding termination point as shown in this detail 3?

Answer 5 – The secondary grounding bus in TR-5W07 is existing to remain. Grounding riser will be revised in addendum.

Question 6 – Specification sections 27 05 11 through 27 15 00 appears to be missing from the specifications manual.

Answer 6 – Specification sections 27 05 11 through 27 15 00 attached.

Question 7 – Sheet 1-T12 Technology equipment schedule seems to be missing rough in requirements for the nurse call equipment as shown on sheet 1-T1 Technology symbol list.

Answer 7 – Rough-in requirements for nurse call will be clarified in addendum.

Question 8 – Specification section 07 01 50.19 Preparation for Re-roofing. Please provide an existing roof plan and indicate what type of roofing is required.

Answer 8 – See Sheet H5 for general roof description. Roof plan detail to patch 14x14 opening included in Addendum.

Question 9 – Plumbing schedule on sheet 1-P12 don't match what is shown on new plumbing plans specifically sheet 1-P8 & 1-P9. Please update.

Answer 9 – Open ended question. A/E to address discrepancies in the addendum.

Question 10 – Substitution requests for the Acoustical Ceilings (09 51 00):

ACT-1:

Specified: Armstrong Cirrus #584 Proposed: USG Eclipse #76775

ACT-2:

Specified: Armstrong Clean Room VL #868 Proposed: USG Clean Room #56099

Data pages and substitution forms are attached.

Answer 10 – Substitution request denied.

Question 11 – Plan 1-H7 (HVAC Details) detail (5) mentions: see specification section 23 07 13

– Ductwork Insulation, specification Volume 2 goes from 23 07 11 to 23 08 00. Just want to make sure I have all the current/correct info regarding ductwork insulation.

Answer 11 – Ductwork insulation detail updated in the addendum.

Question 12 – SOW Paragraph 2 requires “moderate weekend/after-hours work”. Please clarify the items that need to be accomplished after hours.

Answer 12 – Weekend/afterhours work will include any work activities causing noise and disturbances that impact Hospital operations; to include staff work in addition to patient care. All 3rd and 4th floor work, and any utility shutdowns that affects Hospital operations, unless coordinated differently with COR. Examples include but are not limited to core drilling, power shutdowns, water shutoffs, HVAC shutdowns

Question 13 – Regarding phasing, particularly phases II, III, IV, V and VI. Is there a reason these are separate phases? Logically portions of each phase could be completed simultaneously.

Answer 13 – Consolidate phases II through V as indicated. Phase VI Restoration will require VA to relocate services back to Zone 1 and must be a separate phase. Provide 14 days between phases I and II and again between V and VI to allow for the VA to remove equipment prior to work.

Question 14 – Regarding ICRA barrier requirements, SOW paragraph 4 requires hard barriers. The drawings note soft and hard barriers. Please clarify if the SOW or drawings take precedence.

Answer 14 – Both documents apply. SOW states "work includes but is not limited to temporary hard barriers."

Question 15 – Will the Project Manager be required to be on-site for the weekly meetings or can these be attended via conference call?

Answer 15 – Meeting through Microsoft teams is preferred for weekly meetings

Question 16 – Reference specification 01 35 26 paragraph h. Mishap Investigation and Reporting. Can the standard OHSA requirements to include the form 300 and 301 suffice for these requirements? If not, please include the forms required for reference.

Answer 16 – OSHA 300 and 301 forms or equivalent forms are acceptable for use.

Question 17 – Reference specification 01 35 26 paragraph 1.9 requires a SSHO on site with no other duties, specification 01 45 00 paragraph 3.4.B states the CQC System Manager can also have duties as the Superintendent. This would require two on site personnel at all times. Please confirm the contractor requirement is to have two separate on-site personnel (a SSHO and QC/Superintendent).

Answer 17 – Contractor will need a SSHO and a separate person to be the superintendent

Question 18 – Please confirm if elevators can be used to get materials to each floor and which elevators the contractor(s) will be allowed to use.

Answer 18 – freight elevator A-5 can be used, but other elevators can be granted approval depending on the material and time of work. Contractor shall provide protection to the elevators to prevent damage and will clean up any messes from spills or tracked in dust/debris.

Question 19 – Reference Drawing HA 001, Abatement Keynote A1 reference (6 doors).

There are only 5 callouts on the print. Is the callout at the north end of corridor 5C002 referencing the two doors at the end of the corridor?

Answer 19 – Yes, note references two doors. Refer to A2. Keynote DE22 identifies the assumed asbestos containing doors.

Question 20 – Reference Sheet 1-S1, there are multiple infills shown but there is not a corresponding drawing for the work to be done on the sixth-floor roof level. To complete the infills the concrete will need to be installed on the roof side and the roof cut and patched. Can you please provide the roof locations of the infills, roof details and roof manufacture warranty information? This appears to affect roof metal walkways, an area within the penthouse and possibly lighting protection removal and replacement. None of these items are addressed on the drawings.

Answer 20 – Concrete roof infill locations are 10x10 and 14x14 openings indicated on sheet H5. Information included in Addendum.

Question 21 – Reference drawing A-A1 General Notes 2 and 6 are vague in whether this applies only to new construction or whether the contractor is required to repair existing deficiencies. It would be impossible to address existing deficiencies without a thorough above ceiling inspection prior to bidding. Can we assume the fireproofing is only for the work removed and installed under this contract and that existing deficiencies will be treated as a differing site condition?

Answer 21 – Fireproofing is only for the work removed and installed under this contract.

Existing deficiencies outside the limits of construction for this project are outside the scope of this project.

Question 22 – Reference Sheet 1-A2 and 1-A3 Demolition Planned Key Notes DE6. All equipment and furniture to be salvaged and returned to owner. Where will the equipment and furniture need to be delivered? And is there any packing or protection needed to be provided?

Answer 22 – VA will remove equipment like chairs and dialysis machines, but contractor will remove medgas and items to be reinstalled and store those off site. Items are changing in the addendum

Question 23 – Reference Sheet 1-A2 and 1-A3 Demolition Planned Key Notes DE7. Will the VA provide an area for storage? If so, where will that storage area be?

Answer 23 – No storage will be provided by the VA for the storage of all the doors in DE7.

Contractor will take pictures of all sides of the door right when removed. All doors will be protected and labeled with door number and location and stored by the contractor and returned in the same condition as when removed. Contractor will provide the pictures to the VA COR/CO prior to reinstallation. Any damage caused during the project will be repaired or replaced by the contractor at no cost to the VA.

Question 24 – Reference Sheet 1-A2 and 1-A3 Demolition Planned Key Notes DE9. Where will the plumbing fixture need to be delivered? And is there any packing or protection needed to be provided?

Answer 24 – Contractor is responsible to provide materials to properly protect and store the fixtures within the VA either in the basement or in one of the bathrooms of 5W.

Coordinate with the COR prior to removal. Contractor will take pictures of all sides of the fixture and mark the package materials with description and location and provide to the VA COR/CO prior to reinstallation.

Question 25 – Reference Sheet 1-A2 and 1-A3 Demolition Planned Key Notes DE13, DE14, DE16, and DE18. Will the VA provide an area for storage of materials to be reinstalled? If so, where will the storage area be?

Answer 25 – VA will move DE14 items. Contractor remove DE18 and coordinate with COR to give to EVS. DE13, DE16, Contractor will take pictures of all sides of the items right when removed. All items will be protected and labeled to include location and stored by the contractor and returned in the same condition as when removed. Contractor will provide the pictures to the VA COR/CO prior to reinstallation. Any damage caused during the project will be repaired or replaced by the contractor at no cost to the VA.

Question 26 – Reference Sheet 1-A2 and 1-A3, Demolition General Notes 9 states “Salvaged items scheduled for reuse must be cleaned, restored and/or refinished to like new condition, unless otherwise noted”. “Restored and/or refinished to like new condition” will be impossible to do. See the door photo to be salvaged for reuse below which is damaged through the existing door veneer:

Please clarify what should be done with each item to be salvaged for reuse.

Answer 26 – Restore to the state as to which it was removed. Any items damaged by the contractor will be repaired to similar state of the item prior to removal, or to be replaced at no cost to the VA. Contractor will take pictures of all sides of the items and mark the package materials with description and location and provide to the VA COR/CO prior to reinstallation.

Question 27 – Reference Sheet 1-A4, Floor Plan Keyed Notes FL10. Grinding the floor per this note would result in approximately 1-1/4” of structural concrete removed at floor drain.

It appears from the drawings the concrete is 4” thick which would remove 25% of the floor structure. This is not a question but a statement for record that this could expose reinforcement and may compromise the structure as the work is not reflected on the structural drawings.

Answer 27 – The structural drawings call for a 2 1/2" slab. The top 1 1/2" is a non-structural topping. The grinding and floor sloping cannot and should not disturb the structural floor.

Question 28 – Reference Sheet 1-A20, Equipment Schedule. There are acquisition codes of W and one blank that are not reflected on the VA Acquisition code legend. Please identify “W” code and provide a code for P8705 Dialysis Box, recessed, Single Valve.

Answer 28 – Code "W" is "V V." P8705 code is CC. A single cold water valve supply, recessed dialysis box with door. Box is constructed of stainless steel and includes the following standard equipment: cold water valve with 1/2" nom. copper female inlet, 3/4" male hose thread outlet and vacuum breaker; discharge hose bracket, wastewater receptor, and removable wall flange. ”

Question 29 – Reference sheets 1-P1, 1-MG1 and 1-H1 View Key line types. The line type and tag key shows three line types; solid, dashed and long dashed. One is listed as “WIDE LINE” and one as “NARROW LINE” however they both appear the same. One states, “New Work by Contractor” and one says, “Existing to remain or work by others”. Please differentiate the line types.

Answer 29 – Line types clarified in addendum.

Question 30 – Referencing Sheets 1-P2, 1-P3, 1-P4, 1-P5, 1MG2, 1-H2 and 1-H3. Please confirm all plumbing, MEDGAS and HVAC represented by dashed lines are to be demolished by the contractor.

Answer 30 – Dashed lines indicated demolition as part of the scope of work as noted on the drawings.

Question 31 – Reference Sheet 1-P9. Keynotes 1 and 2 require installation of mixing valve (MV-2) and sink (SK-5). There are not any corresponding architectural requirements for these installations or information on how to install these. Is the contractor to surface mount and repair, install piping in the wall, remove/replace ceramic tile? Please clarify the requirements. Also, as these are temporary installations will these items be removed upon completion of the project or will they remain permanently in place?

Answer 31 – Intent is to be surface mounted install. Removed upon completion. AE will add notes to the Addendum

Question 32 – Reference Sheet 1-H3. There is a 14X14 Return Air Down that is to be removed. There is nothing required to patch this area on the roof. Please provide the details required to patch this area.

Answer 32 – Concrete roof infill and patch information included in Addendum.

Question 33 – Reference Sheet 1-H3, plan note for EF-E states roof patching by the GC.

Please provide details regarding how this should be infilled and patched.

Answer 33 – Concrete roof infill and patch information included in Addendum.

Question 34 – Reference Sheet 1-H3, there is piping shown as dashed lines to be demolished extending south of the penthouse. Please clarify where these lines are to be demolished too and capped. Also clarify if there are any roof patching requirements in relation to the demolished lines.

Answer 34 – Piping lines 1-H3 referenced are not intended to be demolished. They are dashed and thin line type because they are below the ducts in that area. Demolition scope is shown as dashed and thick line type.

Question 35 – Reference Sheet 1-H5 and 1-E7, EF-3 and EF-4. There are no roof curb details, exhaust fan support details or electrical conduit flashing details showing how these are to be attached, supported and flashed through or on the roof. There is Detail 6 on Sheet 1-H7 but it does not show how to attach the duct or fan supports. Please provide mounting and roof curb details for these fans.

Answer 35 – Details for mechanical installation are provided already on the detail’s sheets.

Details will be provided for electrical in the addendum.

Question 36 – All the Technology sheets are listed “NOT FOR CONSTRUCTION” and appear to be incomplete. There is no callout of what should be demolished or replaced. Please confirm drawings are for construction.

Answer 36 – Correct drawings attached.

Question 37 – Reference Sheet 1-T2. What is this sheet indicating? There are no callouts or notes on this sheet.

Answer 37 – Sheet is to indicate the location of room 2W114 which is referenced in detail 1/1-T10 for access control head end. Notes will be added in addendum to clarify the room location.

Question 38 – Reference Sheet 1-T3 Keynote 3 states; “SPEAKER N.I.C. (TYP)”. It is assumed that NIC means NOT IN CONTRACT as it is not on the abbreviation key. What is the contractor to do with the speakers?

Answer 38 – Speakers must be removed. Keynote #3 will be deleted.

Question 39 – Reference Sheet 1-T4. There appears to be no work on this page, nothing is called out or shown as dashed for demolition. Can you confirm there is no work on this page to be completed by the contractor?

Answer 39 – The indicated devices are existing to remain. Notes will be added in addendum to clarify scope.

Question 40 – Reference Sheet 1-T5, 1-T6 there is nothing called out to be installed on these pages. Are we to assume all the symbols are new devices to be installed? Several of these devices shown are also on the demolition plans in the same place but not called to be demolished.

Answer 40 – New work consists of wireless access points in corridors and security systems devices. Notes will be added in addendum to clarify scope.

Question 41 – Please confirm that the abatement is by the contractor.

Answer 41 – All abatement work is to be completed by the Contractor.

Question 42 – Will the government consider allowing Superintendent to also be QCM?

Answer 42 – Superintendent can also be QCM

Question 43 – Can the superintendent, PM and QC Manager fall under our General Contractoring?

Answer 43 – the primary contractor is responsible for all aspects of the contract. Primary contractor will need to have direct supervision of the site and someone physically present.