demo 229_BID.pdf
PDF 15 MB Posted
- Attached to
- Bldg 229 Demo Amendment 2
- Solicitation number
- W50S7126RA001
- Issued by
-
Department of the Army National Guard
About this file
This document set contains architectural and engineering plans for a demolition project at the Iowa Air National Guard Base, Des Moines International Airport, located at 3100 McKinley Avenue, Des Moines, Iowa. The drawings were prepared by SJS and dated January 23, 2026 (with some reference plans dated January 14, 2025).
The project involves demolition of Building 229 and associated infrastructure within a defined area of the base. Key demolition work items under CLIN 1 include: removal of Building 229 and all foundations; demolition of concrete and asphalt pavements; removal of test cell footings and foundations from previously demolished Building 228; demolition of trench foundations and retaining walls; removal of a blast wall; demolition of a vehicle barrier; cutting off a metal retaining wall one foot below new finished elevation; removal of a water hydrant; demolition of storm sewer structures; and removal of electrical equipment and footings. An existing monitoring well requires raising to the new elevation per Statement of Work section 5.20.2, with the contractor responsible for any damage repair costs. The plans include a demolition plan (Sheet D-1), reference photographs showing existing conditions (Sheet D-2), grading plan (Sheet CS-1), utility demolition plan (Sheet U-1), and reference plans showing the existing Hush House Noise Suppressor building structure and systems (Sheets R-ST2, R-S1 through R-S4). The grading plan specifies contour elevations and fill requirements, while the utility demolition plan identifies specific storm sewer lines, electrical conduits, sanitary sewer lines, and water lines to be removed or abandoned, with requirements for proper backfill and compaction procedures.
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Text version
BLDG
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DEMO NOTES:
1. PROTECT EXISTING PAVEMENTS TO REMAIN. ANY DAMAGE TO PAVEMENT DUE
TO CONSTRUCTION SHALL BE REPAIRED AT THE CONTRACTORS EXPENSE TO
THE OWNER’S SPECIFICATIONS.
2. VERIFY LOCATION OF EXISTING UTILITIES PRIOR TO CONSTRUCTION. ANY
DAMAGE TO UTILITIES DUE TO CONSTRUCTION SHALL BE REPAIRED AT THE
CONTRACTORS EXPENSE TO THE OWNER’S SPECIFICATIONS.
3. REMOVE PAVEMENT AS NECESSARY IN LOCATIONS SHOWN. SAW−CUT AT
TERMINATION TO FULL DEPTH ALL EXISTING PAVEMENT WHICH CONNECTS TO
PROPOSED PAVEMENT.
4. ALL FOUNDATIONS TO BE REMOVED COMPLETELY SEE REFERENCE PAGES FOR
INFORMATION ON FOUNDATIONS OF PREVIOUSLY REMOVED BUILDINGS.
DEMO KEY NOTES − CLIN 1:
DEMO BUILDING 229 INCLUDING ALL FOUNDATIONS
DEMO ALL CONCRETE AND ASPHALT ROADS / PADS
DEMO ALL TEST CELL FOOTINGS AND FOUNDATIONS FROM PREVIOUSLY
DEMOED BUILDING 228 SEE PAGE R−S1
DEMO TRENCH FOUNDATIONS AND RETAINING WALLS SEE R−S2
DEMO BLAST WALL SEE 26/R−S4
DEMO VEHICLE BARRIER
CUT OFF METAL RETAINING WALL 1’−0" BELOW NEW FINISHED ELEVATION
EXISTING MONITORING WELL RAISE TO NEW ELEVATION SEE STATEMENT OF
WORK 5.20.2 . ANY DAMAGE TO THE WELL WILL BE FIXED AT CONTRACTORS
EXPENSE.
7 1
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DEMO KEY NOTES − CLIN 1:
DEMO BUILDING 229 INCLUDING ALL FOUNDATIONS
DEMO CONCRETE
DEMO ALL TEST CELL FOOTINGS AND FOUNDATIONS FROM PREVIOUSLY
DEMOED BUILDING 228 SEE PAGE R−S1
DEMO TRENCH FOUNDATIONS AND RETAINING WALLS SEE R−S2
DEMO BLAST WALL SEE 26/R−S4
DEMO VEHICLE BARRIER
CUT OFF METAL RETAINING WALL 1’−0" BELOW NEW FINISHED ELEVATION
DEMO WATER HYDRANT
DEMO STORM SEWER STRUCTURE
DEMO ELECTRICAL EQUIPMENT AND FOOTINGS
EXISTING MONITORING WELL RAISE TO NEW ELEVATION SEE STATEMENT OF
WORK 5.20.2 . ANY DAMAGE TO THE WELL WILL BE FIXED AT CONTRACTORS
EXPENSE.
S up er S ab er
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Mustang Dr.
922 922
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GENERAL NOTES:
A. UTILITY WARNING:
THE UTILITIES SHOWN HAVE BEEN LOCATED FROM FIELD SURVEY INFORMATION AND/OR RECORDS OBTAINED. THE SURVEYOR MAKES NO GUARANTEE THAT THE UTILITIES SHOWN COMPRISE ALL SUCH UTILITIES IN THE AREA, EITHER IN SERVICE OR ABANDONED. THE SURVEY FURTHER
DOES NOT WARRANT THAT THE UTILITIES SHOWN ARE IN THE EXACT LOCATION INDICATED.
B. NOTIFY UTILITY OWNERS PRIOR TO BEGINNING ANY CONSTRUCTION. CONTRACTOR IS RESPONSIBLE FOR DETERMINING EXISTENCE, EXACT LOCATION AND DEPTH OF ALL UTILITIES. AVOID DAMAGE TO UTILITIES AND SERVICES DURING CONSTRUCTION. ANY DAMAGE DUE TO THE CONTRACTOR’S CARELESSNESS SHALL BE CORRECTED AT THE CONTRACTOR’S EXPENSE. COORDINATE AND COOPERATE WITH UTILITY COMPANIES
DURING CONSTRUCTION.
C. GRADING TO PROVIDE POSITIVE DRAINAGE TO STORM DRAIN & EASE TO MAINTAIN
D. PROVIDE PERMANENT LAWN SEEDING MIX IN ALL AREAS DISTURBED BY CONSTRUCTION, UNLESS NOTED OTHERWISE. − SEE SPECIFICATION
E. FILL TO BE PROVIDED BY CONTRACTOR
F. TOP ALL DISTURBED AREAS WITH 6" IMPROVED TOP SOIL SEE CHAPTER 5 OF PWS
V ip er D r.
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Air Cobra Dr.
M ustang Dr.
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REMOVE CONDUIT TO
THIS POINT
REMOVE SEWER LINE
TO THIS POINT, PLUG
ABANDONED LINE
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KEYNOTES CLIN 1:
DEMO STORM SEWER LINE
DEMO STORM SEWER STRUCTURE
REMOVE ELECTRICAL LINE AND DEMO CONDUIT
REMOVE ELECTRICAL LINE TO SWITCH. PROVIDE PULL
LINE FROM MANHOLE TO SWITCH FOR FUTURE USE
REMOVE ELECTRICAL LINE FROM CONDUIT AND PLUG CONDUIT
HOLE IN MANHOLE FROM REMOVED LINE
DEMO SEWER LINE
PLUG HOLE IN MANHOLE FROM ABANDONED SEWED LINE
ABANDON SEWER LINE IN PLACE
*FILL FOR ALL DEMOED LINES AND STRUCTURES TO BE DONE WITH 1’
LIFTS OF FILL MAX AT 95% COMPACTION UNTIL REQUIRED ELEVATION
IS MET
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| Sheets and Views |
| demo 229 - Base Plan-CS-1 |
| demo 229 - Base Plan-R-ST2 |
| demo 229 - Base Plan-R-S1 |
| demo 229 - Base Plan-R-S2 |
| demo 229 - Base Plan-R-S3 |
| demo 229 - Base Plan-R-S4 |
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