Blast Shield solicitation questions

Dyess AFB
Construction South Apron Blast Shield
FA466126R0008
Questions and Answers
1) Question: BDI is the engineering and material supplier for the specified afterburner-rated GS20-2EW system and has supplied this model for B-1B operations at both Dyess AFB and Ellsworth AFB. The SOW requires installation on existing concrete with a minimum thickness of 16 inches, and the available record drawings date to 1985. Please provide available foundation details, reinforcing steel layouts, pavement sections, and other relevant information for the proposed JBD locations. Typical BDI foundations for this system include a deepened reinforced-concrete grade beam at the leading edge, often approximately 4 ft × 4 ft, to resist sliding and overturning forces.
Answer: Existing blast shields are installed/mounted directly to apron concrete pavements. As-builts of the existing parking apron are included at the end of this document. Photos of existing shields are also included. - B-1B’s only test/run one engine at a time for full afterburner runs. - Blast Shields are located a minimum of 225’ from B-1B engines. 2) Question: Please confirm whether the Government and/or Designer of Record has determined that the existing pavement/foundation is structurally adequate for the GS20-2EW reactions and anchorage associated with B-1B afterburner operations. If not, please clarify who is responsible for evaluating the existing pavement and designing any required foundation or pavement modifications.
Answer: See Question #1 answer.
3) Question: If sufficient existing pavement/foundation information is not available to complete that evaluation, please clarify whether the Contractor is responsible for field verification or investigation, such as coring, GPR/reinforcement scanning, or other condition assessment. Answer: See Question #1 answer.
4) Question: The solicitation provides 60 calendar days for the base requirement and 14 days for Option #1. The GS20-2EW requires approximately 14 weeks for fabrication after approved submittals, plus typically about one week per deflector for installation. Please clarify how the stated periods of performance are intended to accommodate submittals, fabrication, delivery, installation, and closeout.
Answer: A Period of Performance extension will be considered based on the manufacturer’s fabrication timeline and installation timelines. 5) Question The as-built drawings (Sheet 2) show existing blast deflectors bonded with #4/#6