RFB950800-01 - Addendum #1.pdf
PDF 769 KB Posted
- Solicitation number
- RFB950800-01
- Issued by
- Story County, Iowa
About this file
This is Addendum #1 to Request for Bids (RFB) 950800-01 issued by the Iowa Department of Administrative Services for roof replacement work at the Fort Dodge Correctional Facility (FDCF) Units A, B, and G. The addendum, dated April 16, 2026, addresses questions raised during the pre-bid meeting held on April 14, 2026, and provides clarifications regarding project scope and contractor requirements. The project involves removal of existing ballast, pavers, roofing membranes, and related materials from three buildings, followed by installation of a new fully adhered EPDM thermoset single-ply roofing system. Key clarifications include confirmation that contractors must remove and dispose of all existing rock and pavers from the roofs; the restricted gravel path between exterior and interior fencing cannot be used for staging equipment or materials; materials and tools may be staged overnight on roofs provided no flammable materials are stored; conveyor belt systems are prohibited for material removal; and contractors must register with the State of Iowa to receive a vendor number for payment purposes. Updated drawing sheets A2.00 and A2.01 reflect revised existing roof assembly details, and Section 01 1200 of the specifications has been modified to clarify that backer rod for approximately 6,110 linear feet must be included to seal the existing roof deck per detail 9 on sheet A4.00.
The addendum includes general notes and keynotes applicable to both building demolition plans, establishing standards for material protection, weather-tight conditions, lightning cable and rod removal and reinstallation with new clips, and roof tie-off anchor removal procedures that must be coordinated with facility ownership to prevent damage to building interiors. Contractors are required to inspect pipe couplings on roof vents during demolition and notify the facility of any requiring replacement; immediately report any materials or tools that fall from the roof; and allow only facility personnel to retrieve fallen items. All roof and building-mounted security cameras or devices will be removed and reinstalled by the owner. The addendum provides the Pre-Bid Meeting Sign-in Sheet dated April 14, 2026, and references updated drawing sheets as attachments for contractor review prior to bid submission.
View the file
Other files
| File | Type | Posted |
|---|---|---|
| RFB950800-01 - Project Manual.pdf | ||
| RFB950800-01 - Notice to Bidders.pdf | ||
| RFB950800-01 - Drawings.pdf | ||
| RFB950800-01 - Bid Form.pdf | ||
| 1380388-event.pdf |
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Text version
Addendum 1 for RFB950800-01
Project Name: FDCF Unit A, B, & G Roof Replacement
DAS RFB #: 950800-01
DAS Project #: 9508.00 Date: 4/16/2026
QUESTIONS AND ANSWERS FROM PRE-BID MEETING
Q1. Does FDCF want the rock or existing pavers from the roofs after removal.
A1. No, the contractor is to remove and dispose of this material.
Q2. There is a gravel path between the outside fence and interior fence. Can that be used to stage a crane?
A2. No, there cannot be any vehicles or materials in this area.
Q3. Can materials and tools be staged on the roofs over night?
A3. Yes, but no flammable materials can be stored on the roofs. A job box is also acceptable to be stored on the roof.
Q4. Can a conveyer belt system be used to assist in removing rock from the roof?
A4. No, this equipment will not be allowed to be used.
Q5. Do contractors need a State of Iowa resident number to be awarded this project?
A5. Yes, contractors will need to register with the State of Iowa to receive a vendor number for payment. Please see the following links for information regarding getting registered. https://das.iowa.gov/vendors/vendor-resources/vendor-registration and https://dial.iowa.gov/licenses/building/contractors
CHANGES TO DRAWINGS AND SPECIFICATIONS
DRAWINGS:
• Sheet A2.00 – DEMO PLAN – BUILDING A o Existing Roof assembly updated
• Sheet A2.01 – DEMO PLAN – BUILDING B & G o Existing Roof assembly updated
SPECIFICATIONS:
• SECTION 01 1200 – CONTRACT SUMMARY
o Section 1.09, Note A/4 should read as follows “Include backer rod for approximately 6,110 LF to seal up existing roof deck as shown on detail 9 per sheet A4.00.”
ATTACHMENTS
1. Drawing Sheets A2.00 & A2.01
2. Pre-Bid Meeting Sign in Sheet held on 04/14/2026.
END OF ADDENDUM
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GENERAL NOTES
KEYNOTES
DEMO GUTTER
EXISTING DOWN SPOUT - TO BE REUSED
EXISTING ROOF CURB TO REMAIN
LIGHTNING CABLE OVER SIDE OF WALL TO LOWER ROOF
- REMOVE AND REINSTALL.
TYPICAL - REMOVE FLASHING AND PARAPET CAP
DASHED LINES INDICATE DEMOLITION. NOT ALL ITEMS NOTED FOR
CLARITY.
EACH CONTRACTOR TO CAREFULLY EXAMINE EXISTING CONDITIONS
PRIOR TO TIME OF BID.
PATCH AND REPAIR EXISTING SURFACES, INDICATED TO REMAIN,
DAMAGED DURING DEMOLITION. PREPARE FOR INSTALLATION OF NEW
FINISHES AS SPECIFIED.
PROTECT EXISTING FINISHES TO REMAIN.
MAINTAIN WEATHER TIGHT CONDITIONS ON ALL EXISTING SPACES
THROUGHOUT CONSTRUCTION.
REMOVE AND DISPOSE OFF SITE EXISTING MEMBRANE, INSULATION,
METAL TRIM AND PAVERS. CONTRACTOR TO REMOVE AGGREGATE
BALLAST OFFSITE AND DISPOSE.
CONTRACTOR TO REMOVE & REINSTALL LIGHTNING PROTECTION
CABLES & RODS. PROVIDE NEW CABLE CLIPS. RE-CERTIFICATION IS
NOT REQUIRED.
EXISTING ROOF TIE OFF ANCHORS TO BE REMOVED BY THE
CONTRACTOR. COORDINATE THIS WORK WITH THE OWNER SO THE
THROUGH BOLT DOES NOT DROP INTO THE BUILDING.
DURING ROOF DEMOLITION, CHECK ALL PIPE COUPLINGS ON ROOF
VENTS. NOTIFY FACILITY IF ANY NEED TO BE REPLACED.
CONTRACTOR TO IMMEDIATELY NOTIFY THE OWNER IF ANY MATERIALS
AND/OR TOOLS FALL OFF OF ROOF. ONLY THE OWNER WILL BE
ALLOWED TO RETRIEVE THE FALLEN ITEMS.
ALL ROOF AND BUILDING MOUNTED SECURITY CAMERAS OR DEVICES
WILL BE REMOVED AND REINSTALLED BY THE OWNER.
A
B
C
D
E
F
G
H
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EXSITING ROOF ASSEMBELY
EXISTING ROOF STACK HGT: 6"
1. LOOSE LAID BALLAST
2. 60 MIL. EPDM
3. 2" INSULATION (2 LAYERS)
4. 1" PERLITE ((2 LAYERS)
5. CONCRETE DECK
K
INDICATES PAVERS TO BE REMOVED
LEGEND
INDICATES PAVER WALKING PATHS TO BE REMOVED
AREA OPEN TO BELOW. CONTRACTOR TO COVER ENTIRE
AREA AS TO NOT ALLOW ANY MATERIALS AND/OR TOOLS
FALL INTO THE AREA BELOW.
V.T.R - VENT THROUGH ROOF
- TO REMAIN REMOVE ROOFING MEMBRANE AS
NEEDED TO PREP FOR NEW ROOFING
MATERIALS.
L.C.P.P. - LIGHTNING CABLE PROTECTION PENETRATION
- TO BE REMOVED AND REINSTALLED WITH NEW
CLIPS
R.T.O. - ROOF TIE OFF
- REMOVE FULLY NOT TO BE REINSTALLED,
PATCH HOLES IN THE CONCRETE DECK.
COORDINATE DEMOLITION WITH OWNER SO
MATERIAL DOES NOT FALL INSIDE OF BUILDING.
W.T.O. - WALL TIE OFF
- TO REMAIN
E.F. - EXHAUST FAN
- TO REMAIN - OWNER WILL REMOVE AND
REINSTALL AS NEEDED TO ALLOW FOR DEMO OF
ROOF MEMBRANE.
S.A - SUPPLY AIR (AIR INTAKE)
- TO REMAIN - OWNER WILL REMOVE AND
REINSTALL AS NEEDED TO ALLOW FOR DEMO OF
ROOF MEMBRANE.
- LIGHTNING ROD & CABLES
- FIELD VERIFY LOCATIONS, REMOVE AND
REINSTALL TO EXISTING LOCATIONS WITH NEW
CLIPS
L.R. - LIGHTNING ROD
- FIELD VERIFY QUANTITIES & LOCATIONS,
REMOVE AND REINSTALL TO EXISTING
LOCATIONS WITH NEW CLIPS.
R.H - ROOF HATCH
- TO REMAIN
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COPYRIGHT. Permission to reproduce all or part of this drawing is hereby granted solely for the limited purpose of construction of this project or archiving. Unauthorized copying, disclosure or construction use without written permission of Cannon Moss Brygger & Associates is prohibited by copyright law.
IF THIS DRAWING IS NOT 30"x42" IT IS NOT TO SCALE
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1/8" = 1'-0"1
DEMO - BUILDING A
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KEY PLAN
NO. DESCRIPTION DATE
1 ADDENDUM 1 04/16/2026
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2 2 2 2
GENERAL NOTES
KEYNOTES
DEMO GUTTER
EXISTING DOWN SPOUT - TO BE REUSED
EXISTING ROOF CURB TO REMAIN
LIGHTNING CABLE OVER SIDE OF WALL TO LOWER ROOF
- REMOVE AND REINSTALL.
TYPICAL - REMOVE FLASHING AND PARAPET CAP
DASHED LINES INDICATE DEMOLITION. NOT ALL ITEMS NOTED FOR
CLARITY.
EACH CONTRACTOR TO CAREFULLY EXAMINE EXISTING CONDITIONS
PRIOR TO TIME OF BID.
PATCH AND REPAIR EXISTING SURFACES, INDICATED TO REMAIN,
DAMAGED DURING DEMOLITION. PREPARE FOR INSTALLATION OF NEW
FINISHES AS SPECIFIED.
PROTECT EXISTING FINISHES TO REMAIN.
MAINTAIN WEATHER TIGHT CONDITIONS ON ALL EXISTING SPACES
THROUGHOUT CONSTRUCTION.
REMOVE AND DISPOSE OFF SITE EXISTING MEMBRANE, INSULATION,
METAL TRIM AND PAVERS. CONTRACTOR TO REMOVE AGGREGATE
BALLAST OFFSITE AND DISPOSE.
CONTRACTOR TO REMOVE & REINSTALL LIGHTNING PROTECTION
CABLES & RODS. PROVIDE NEW CABLE CLIPS. RE-CERTIFICATION IS
NOT REQUIRED.
EXISTING ROOF TIE OFF ANCHORS TO BE REMOVED BY THE
CONTRACTOR. COORDINATE THIS WORK WITH THE OWNER SO THE
THROUGH BOLT DOES NOT DROP INTO THE BUILDING.
DURING ROOF DEMOLITION, CHECK ALL PIPE COUPLINGS ON ROOF
VENTS. NOTIFY FACILITY IF ANY NEED TO BE REPLACED.
CONTRACTOR TO IMMEDIATELY NOTIFY THE OWNER IF ANY MATERIALS
AND/OR TOOLS FALL OFF OF ROOF. ONLY THE OWNER WILL BE
ALLOWED TO RETRIEVE THE FALLEN ITEMS.
ALL ROOF AND BUILDING MOUNTED SECURITY CAMERAS OR DEVICES
WILL BE REMOVED AND REINSTALLED BY THE OWNER.
A
B
C
D
E
F
G
H
I
J
EXSITING ROOF ASSEMBELY
EXISTING ROOF STACK HGT: 6"
1. LOOSE LAID BALLAST
2. 60 MIL. EPDM
3. 2" INSULATION (2 LAYERS)
4. 1" PERLITE ((2 LAYERS)
5. CONCRETE DECK
K
INDICATES PAVERS TO BE REMOVED
LEGEND
INDICATES PAVER WALKING PATHS TO BE REMOVED
AREA OPEN TO BELOW. CONTRACTOR TO COVER ENTIRE
AREA AS TO NOT ALLOW ANY MATERIALS AND/OR TOOLS
FALL INTO THE AREA BELOW.
V.T.R - VENT THROUGH ROOF
- TO REMAIN REMOVE ROOFING MEMBRANE AS
NEEDED TO PREP FOR NEW ROOFING
MATERIALS.
L.C.P.P. - LIGHTNING CABLE PROTECTION PENETRATION
- TO BE REMOVED AND REINSTALLED WITH NEW
CLIPS
R.T.O. - ROOF TIE OFF
- REMOVE FULLY NOT TO BE REINSTALLED,
PATCH HOLES IN THE CONCRETE DECK.
COORDINATE DEMOLITION WITH OWNER SO
MATERIAL DOES NOT FALL INSIDE OF BUILDING.
W.T.O. - WALL TIE OFF
- TO REMAIN
E.F. - EXHAUST FAN
- TO REMAIN - OWNER WILL REMOVE AND
REINSTALL AS NEEDED TO ALLOW FOR DEMO OF
ROOF MEMBRANE.
S.A - SUPPLY AIR (AIR INTAKE)
- TO REMAIN - OWNER WILL REMOVE AND
REINSTALL AS NEEDED TO ALLOW FOR DEMO OF
ROOF MEMBRANE.
- LIGHTNING ROD & CABLES
- FIELD VERIFY LOCATIONS, REMOVE AND
REINSTALL TO EXISTING LOCATIONS WITH NEW
CLIPS
L.R. - LIGHTNING ROD
- FIELD VERIFY QUANTITIES & LOCATIONS,
REMOVE AND REINSTALL TO EXISTING
LOCATIONS WITH NEW CLIPS.
R.H - ROOF HATCH
- TO REMAIN
1/8" = 1'-0"1
DEMO - BUILDING B & G
C M
B A
A R
C H
IT
E
C T
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G
R A
N D
A V
E S
P E
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, I A
(P ) 7
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.3
REVISIONS
SHEET
D A
T E
P R
O J
E C
T
PL
O
T D
AT
E
FI
LE
P
AT
H
COPYRIGHT. Permission to reproduce all or part of this drawing is hereby granted solely for the limited purpose of construction of this project or archiving. Unauthorized copying, disclosure or construction use without written permission of Cannon Moss Brygger & Associates is prohibited by copyright law.
IF THIS DRAWING IS NOT 30"x42" IT IS NOT TO SCALE
/1
/2
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P M
A u to d e sk
D o c s:
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O C
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U n it A
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R o o f
R e p la c e m e n t
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, G , R o o f R e p la c e m e n t
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KEY PLAN
NO. DESCRIPTION DATE
1 ADDENDUM 1 04/16/2026
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