RFIS -655-16-110 VA Response 4-27-2021 -P00005.pdf

36C25021B0028 Project 655-16-110 - Upgrade elevators – Saginaw VAMC – Saginaw MI

Valhalla responses in blue

1. Section 14 21 00 – 2.17 of the specifications calls for the installation of a new Microprocessor control system. Has the specific, detailed, and thorough engineering already been done for this?

Will this engineering solely be the responsibility of the contractor or will the contractor work in conjunction with Valhala?

a. Specification section 2.7 MICROPROCESSOR CONTROL SYSTEM refers to a microprocessor control system in the context of an MCE controller model “i Control”.

Refer to attached product data sheet with highlighted area to meet specification requirement.

2. Section 14 20 00 – 2.8 calls for the contractor to replace the elevator hydraulic plunger assembly. Typically, this component is retained during elevator modernizations. Could the VA clarify the reason why they would like this replaced?

a. Specification section 2.18 HYDRAULIC PLUNGER ASSEMBLY refers to the replacement of a single plunger in the group of cars. Elevator “D” (currently P22-1) requires the new plunger. Refer to sheet A-102, Hoistway Keynote #11.

Elevator “E” (currently P22-2) has recently had a plunger replacement and does not require the same work.

3. In the course of replacing the hydraulic cylinder assembly, it is possible the contractor may discover the hole casing has deteriorated and needs to be replaced. It is also possible that in the course of the work necessary to replace the cylinder assembly, the hole may partially or completely collapse, which would require the hole to be re-drilled. It is standard practice in the elevator trade that any work above and beyond removing the old cylinder, cleaning out the existing cylinder hole, and installing the new cylinder is not included in the price of the cylinder replacement. The above-mentioned conditions are completely unforeseeable and not under the control of the contractor performing the cylinder replacement and therefore it is standard practice for elevator contractors to include the below clause in their proposals: The conditions, and stability of any of the soils and earth below the surface of the elevator pit are unknown.

Pricing is based on the soils being free of obstructions of any type that would impede the continual drilling process, and free of water or any other condition that would impede or slow the process of establishing a cased, secure, watertight hole of adequate size and plumb to accommodate the new jack. Any such additional work required to drill, case and establish a new cased hole suitable to accommodate the new jack assembly is not included in our proposal and would be performed at additional cost as summarized in separate proposal.

a. Refer to Specification 14 20 00 Section 2.19 HYDRAULIC CYLINDER CASING AND WELL HOLE. Contractor is to provide new hydraulic casing and shall provide base bid on drilling hole in dirt, sand, rock, gravel, loam, boulders, hardpan, water, or others obstacles. Include removal of all dirt and debris..

4. Does this contract include changing the key switches in two elevators in building 1 or 22 that otherwise are not involved in this modernization project? If so, which keys exactly need to be changed out and what do they need to be changed to? Could a specific section be added to the specifications outlining this work?

a. The scope of this contract is on the elevators indicated within the drawings and specifications. Those are limited to B1 “A”, “B”, “C” and B22 “D”, “E”.

Contractor to provide all necessary keys for operation, Car Operating Panel and Aux. Car Operating Panel shall have “BEST” key cores.

b. NOTE: Other Elevators, not included in these specifications on Campus shall be re-keyed to match the new keys installed on the newly modernized elevators.

5. Specifications section 14 24 00, 1.12 states “emergency power supply-provide new.” Is this referring to just the Automatic transfer switch or to an actual emergency power supply, such as a generator? Is a new generator included in this contract for either building 1 or 22

a. This is references the scope of replacing the conductors, ATS (SWITCH device only removed from scope), and other components that serve as emergency power to the elevator as required in electrical drawings.

No additional permanent generator is required.

6. Specification section 14 21 00, 2.45-47 states all new car slings, platforms, and cab enclosures are required for the passenger and service elevators, but this is not shown on the drawings. Are all new car slings, platforms and cab enclosures required for the traction cars in building 1 and in building 22?

a. This is correct. Hydraulic requirements are similarly outlined in Specification 14 21 00 Sections 2.38 through 2.40.

7. Specification section 14 21 00, 2.16 states that elevators must meet the requirements of VA seismic design manual H-18-8. The specification also calls out in section 14 21 00, 1.5, C, c “Rail bracket spacing and maximum vertical forces on guide rails in accordance with H-18-8 for seismic Risk Zone 2 or greater.”

Has the VA or the Architect and Engineer done a “seismic evaluation of an existing building” per the manual?

Could the VA confirm this facility is in seismic zone 0 and requires no seismic considerations for this project?

a. Valhalla has not performed a seismic evaluation of existing building.

b. No seismic requirements are necessary.

8. Specification section 14 24 00, 2.16 calls for the new hydraulic pump units to be submersible.

During the walk through, it was emphatically stated that only dry pump units would be allowed.

Please specify which type of hydraulic pump unit it acceptable for this project.

a. Specifications call for submersible pump due to the benefits of size, maintenance, and functionality over a dry pump units. However, Valhalla defers to the VA on this and finds dry type units acceptable. Either type is acceptable.

9. Specification section 14 24 00, 2.20 states to install new car buffers. Drawing A-102 under “Hoistway”, number 13 states to retain existing buffers. Can the VA clarify which statement is correct?

a. Specifications are correct. Sheet A-102, Hoistway Note 13 should read “PROVIDE NEW

CAR BUFFERS.”

10. In the event of a discrepancy between the specifications and the drawings, which document shall be adhered to as correct?

a. The specifications typically override the drawings, however the most stringent requirement shall apply. The Contracting Officer must be notified of any discrepancies and will provide clarification.

11. Specification section 14 21 00, 2.19 calls for new Sheaves to be installed in the elevator machine room. Does this mean all three elevator machines get new drive sheaves and deflector sheaves, even though the service car hoist machine is being retained?

a. Correct, provide new deflector sheaves for each machine.

12. Specification section 14 21 00, 2.21 calls for new compensation chains an all three traction elevators. The existing machine is being retained for the service car and as such is remaining a geared traction elevator which doesn’t appear to have been designed with compensation. Has the VA done the engineering research to see if this elevator can have compensation chains added to it?

a. Section 2.18 of the Specifications shall read – TRACTION HOIST MACHINE – PASSENGER

AND SERVICE ELEVATORS - INSTALL NEW PERMINENANT MAGNET AC GEARLESS HOIST

MACHINES.

b. Therefore, in lieu of retaining the existing Service Elevator Geared Hoist Machine, install a new Permanent Magnet AC Gearless Hoist Machine. Additionally, install new Machine room mounted Deflector Sheave.

13. In demolition of the entrances, is it known if there is asbestos in the concrete or brick and mortar that will need to be removed?

a. VA to confirm there will be no asbestos at any location within scope of work.

Valhalla understands there is none to be expected to include the lobby structures.

b. The VA has no knowledge or Record of asbestos in these areas.

14. Would the VA be willing to leave entrance jambs in place and wrap with new Stainless Steel and leave the sills as is?

a. Contractor to replace jambs and sills with new. No cladding will be acceptable.

15. Does this job call for an ICRA barrier between the duplex hoistways?

a. YES

16. Clarification to Medical Emergency Card Readers.

a. The Medical Emergency Card readers shall be HID with HID-EH400 controllers to match current facility standards and capable of reading VA PIV badges currently in use at this facility, which in turn will be required to be programmed into the facilities Genetec Security suite in use at this facility and also require a GENETEC ADVANTAGE agreement.

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