Description of Requirement_Oval Arch.pdf
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- Attached to
- Pre-Cast ECM Oval Arch Segments for ERDC GSL
- Solicitation number
- W912HZ25Q1297
About this file
This document is a Description of Requirement (DOR) for a federal contract opportunity to purchase one concrete oval arch assembly. The key details are:
The Geotechnical and Structures Lab (GSL) requires the purchase of a concrete oval arch assembly with specific construction requirements, including minimum 4000 PSI concrete strength, reinforcing bar and welded wire specifications, concrete coverage, and inspection and delivery criteria. The contractor must provide pricing for a complete unit composed of 5 individual segments, including shipping costs. The concrete unit(s) must be delivered no later than April 18, 2025, with a 14-day minimum notice before delivery. The procurement is a Request for Quote (RFQ) set aside 100% for small businesses under NAICS code 327390, with award to be made to the responsible offeror submitting the lowest price deemed technically capable.
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Text version
Description of Requirement for
Pre-Cast ECM Oval Arch Segments
REQUIREMENT: The Geotechnical and Structures Lab (GSL) has a need for the purchase of
(1) concrete oval arch assembly according to the attached drawing details and specifications shown below:
a. Individual arch segments must be constructed according to attached drawings (See details for
Section Types 1, 2, & 3)
b. A minimum of 4000 PSI, not to exceed 7000 PSI, compressive strength concrete at 28 days per ASTM C39
c. Auger cast grout or aggregate mix sufficient to provide proper consolidation with required reinforcing covers must be used and mix design sent to USACE for approval prior to placement
d. All concrete shall conform to ASTM C94
e. Reinforcing bars shall be deformed type conforming to ASTM A615 Grade 60
f. Welded wire reinforcement shall conform to ASTM A185, minimum lap and embedment to be the greater of one cross section wire spacing plus 2” or 6”, whichever is greater
g. Concrete coverage of reinforcement shall be a minimum of 0.5”, not exceeding 0.75”
h. 7 and 28 day concrete compressive strength break data must be provided (3 breaks at each day using 4x8 cylinders). Three additional test cylinders must be cast and sent to ERDC for follow-on testing.
i. If cold joints are required, details shall be provided to technical POC
j. Section will be inspected upon delivery to ensure no structural cracking is present and overall dimensions are within a tolerance of +/- 0.5”. Thicknesses must be within +/- 0.375”.
k. Lifting eyes/supports must be included (not detailed). Plans must be submitted to technical
POC prior to concrete placement. Adequate supports and shoring must be included during shipment to prevent cracking of concrete section(s). Adequate lifting points must be provided in each section to lift in their vertical orientation for final placement.
l. Offload rigging, including necessary slings and lifting hardware must be provided
PRICING: The contractor shall provide pricing for a complete unit (composed of 5 individual segments) as specified in the requirement. Pricing must include shipping costs to delivery location.
DELIVERY Details: Concrete unit(s) must be delivered NLT April 18, 2025. A minimum notice of 14 days is required ahead of delivery. USACE will offload concrete sections on site.
An on-site truck wait time of 2hrs must be allotted. Inspection will be made upon delivery to ensure dimensions are within tolerance and no structural cracking is present.
DELIVERY LOCATION: ETF Test Site (previously known as Range 16), Fort Polk Military
Installation.
File details come from the government source that posted it. Updated .