RFB937600-01 - Addendum #02.pdf
PDF 1 MB Posted
- Attached to
- CC Parkling Lot 15 Replacement
- Solicitation number
- RFB 937600-01
- Issued by
- Polk County, Des Moines City, Iowa
About this file
This document is Addendum 02 for Request for Bid (RFB) 937600-01, issued by the Iowa Department of Administrative Services (DAS) for the CC Parking Lot 15 Replacement project. The addendum, dated 4/18/2024, provides clarifications and answers to contractor questions regarding the project. Bids are due on April 23, 2024, at 2:00 PM CST. The addendum addresses specific inquiries about tunnel excavation, tunnel depth, and potential repairs, confirming that no tunnel work is anticipated as part of this parking lot replacement project.
The document specifically notes that the State of Iowa has elected to maintain the current concrete replacement design and will not consider asphalt alternatives. The addendum includes a reference sheet (C102) from the DAS Tunnel Joint Repair Project, which shows the location and depth of the tunnel beneath Lot #15. Contractors are instructed to protect the existing tunnel from damage during the parking lot replacement work, with careful consideration of equipment usage in the tunnel's vicinity.
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Addendum 02 for RFB937600-01
Project Name: CC Parking Lot 15 Replacement
DAS RFB #: 937600-01
DAS Project #: 9376.00 Date: 4/18/2024
Bids Due: April 23, 2024 at 2:00 PM CST
Contents:
• Cover Page – Questions (1 page)
• Sheet C102 from DAS Tunnel Joint Repair Project showing depth of tunnel.
1. Questions:
Q: What work is to take place related to Tunnel Excavation and Investigation?
A: The contractor is responsible for protecting the existing tunnel from damage from work associated with this parking lot replacement project. We are not anticipating any work related to tunnel excavation and investigation at this time.
Q: Is there a drawing showing the location of the tunnel and tunnel depth? I just want to make sure it is identified for grading contractor to determine what equipment will be allowed in this area.
A: Please see sheet C102 at the end of in this addendum from the DAS Tunnel Joint Repair Project that shows the depth of the tunnel.
Q: What repairs are expected related to the tunnel?
A: No repairs to the tunnel in this project are expected at this time.
Q: Will the state consider an asphalt alternative?
A: No, the State of Iowa has elected to maintain the current design of concrete replacement.
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FLOOR @ TUNNEL
CENTERLINE
CEILING @ TUNNEL
CENTERLINE
SURFACE GRADE @
TUNNEL CENTERLINE
9+50 10+00 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+00 15+50 16+00 16+50 17+00 17+50
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TUNNEL JOINT
STATION = 9+59.03
CATEGORY C
TUNNEL JOINT
STATION = 10+09.01
CATEGORY B
TUNNEL JOINT
STATION = 10+58.45
CATEGORY E
TUNNEL JOINT
STATION = 11+08.17
CATEGORY D
TUNNEL JOINT
STATION = 11+57.93
CATEGORY F
TUNNEL JOINT
STATION = 12+07.75
CATEGORY E
TUNNEL JOINT
STATION = 13+58.52
CATEGORY F
TUNNEL JOINT
STATION = 14+08.80
CATEGORY F
TUNNEL JOINT
STATION = 14+38.98
CATEGORY C
TUNNEL JOINT
STATION = 15+08.94
CATEGORY F
TUNNEL JOINT
STATION = 16+08.53
CATEGORY C
TUNNEL JOINT
STATION = 16+57.56
CATEGORY B
TUNNEL JOINT
STATION = 17+57.36
CATEGORY D
TUNNEL JOINT
STATION = 18+57.52
CATEGORY B
TUNNEL JOINT
STATION = 19+07.61
CATEGORY B
TUNNEL JOINT
STATION = 19+57.62
CATEGORY C
TUNNEL JOINT
STATION = 20+07.16
CATEGORY D
TUNNEL JOINT
STATION = 20+57.18
CATEGORY D
CATEGORY C
TUNNEL JOINT
STATION = 17+08.12
CATEGORY F
TUNNEL JOINT
STATION = 18+06.00
CATEGORY B
TUNNEL JOINT
STATION = 15+58.40
CATEGORY DTUNNEL JOINT
STATION = 13+08.84
CATEGORY D
TUNNEL JOINT
STATION = 12+65.60
CATEGORY A
TUNNEL JOINT
STATION = 12+45.71
CATEGORY C
STATION = 9+11.52
CLASSIFICATION: MODERATE
AIR VENT
STATION = 9+83.80
CLASSIFICATION: MODERATE AIR VENT
STATION = 10+79.38
CLASSIFICATION: MODERATE
AIR VENT
STATION = 12+63.14
CLASSIFICATION: SEVERE
AIR VENT
STATION = 13+63.14
CLASSIFICATION: MODERATE
AIR VENT
STATION = 15+73.55
CLASSIFICATION: MODERATE
AIR VENT
STATION = 16+61.55
CLASSIFICATION: MODERATE
AIR VENT
STATION = 17+60.18
CLASSIFICATION: MODERATE
AIR VENT
STATION = 18+62.10
CLASSIFICATION: SEVERE
AIR VENT
STATION = 19+62.42
CLASSIFICATION: MODERATE
AIR VENT
STATION = 20+61.84
CLASSIFICATION: MODERATE
AIR VENT
STATION = 11+60.90
CLASSIFICATION: MODERATE
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Travis Text Box Reference for location and depth of tunnel beneath Lot #15
File details come from the government source that posted it. Updated .