Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report

One of 25 reports in the series: Operation Plumbbob available on this site.
Thumbnail image of item number 1 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 2 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 3 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 4 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Showing 1-4 of 29 pages in this report.

PDF Version Also Available for Download.

Description

An underground reinforced-concrete family shelter designed for six persons was tested at three anticipated nuclear blast overpressures: 30, 48, and 65 psi. The structures were calculated to sustain a 30-psi long-duration overpressure. Postshot examination of all shelters lndicated there was little or no deflection in the reinforced-concrete members. Although the actual blast load was of short duration, the natural period for the structures was also shortp therefore it is felt that the structures would withstand similar overpressures from long-duration blast loadings. The average attenuation factor for gamma radiation varied from 3000 to 4500. Permanent damage was confined to the exposed … continued below

Physical Description

25 pages

Creation Information

FitzSimons, Neal August 1, 1957.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 20 times. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Author

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Titles

  • Main Title: Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report
  • Series Title: Operation Plumbbob

Description

An underground reinforced-concrete family shelter designed for six persons was tested at three anticipated nuclear blast overpressures: 30, 48, and 65 psi. The structures were calculated to sustain a 30-psi long-duration overpressure. Postshot examination of all shelters lndicated there was little or no deflection in the reinforced-concrete members. Although the actual blast load was of short duration, the natural period for the structures was also shortp therefore it is felt that the structures would withstand similar overpressures from long-duration blast loadings. The average attenuation factor for gamma radiation varied from 3000 to 4500. Permanent damage was confined to the exposed portions of the ventilation pipes, which were bent to a nearly horizontal position. The steel-plate door at the 65-psi level was dished inward about 1 1/4 in., but it opened and closed easily. (authl

Physical Description

25 pages

Notes

Project 30.3 of OPERATION PLUMBBOB. Orig. Receipt Date: 31-DEC-58

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

  • Report No.: ITR-1450
  • Office of Scientific & Technical Information Report Number: 4349810
  • Archival Resource Key: ark:/67531/metadc1024532

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this report?

Digital Files

When

Dates and time periods associated with this report.

Creation Date

  • August 1, 1957

Added to The UNT Digital Library

  • Oct. 15, 2017, 10:09 p.m.

Description Last Updated

  • July 24, 2025, 6:59 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 1
Total Uses: 20
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 2 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 3 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.
Thumbnail image of item number 4 in: 'Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

FitzSimons, Neal. Evaluation of FCDA Family Shelter, Mark I, for Protection Against Nuclear Weapons. Preliminary Report, report, August 1, 1957; Country unknown/Code not available. (https://digital.library.unt.edu/ark:/67531/metadc1024532/: accessed August 14, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

Back to Top of Screen