File:PlumbingCodeResearch 003.jpg

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Flow conditions in a top floor wet vented bathtub trap. Hydraulic engineers at NBS cooperated with the Housing and Home Finance Agency's effort to develop a nationwide uniform plumbing code. To provide technical data on some of the problems involved, NBS erected in its Hydraulics Laboratory full-scale plumbing systems for one- and two-story duplex houses. These systems exactly duplicated ordinary home plumbing except in one important respect- the pipes and fittings (pictured) were made of transparent plastic. Research was directed toward solving some of the more controversial plumbing problems, which were attested to by the variance in plumbing code requirements in municipalities throughout the United States. Motion pictures were made of the important tests so that local groups would have visual facts to work with when plumbing code revision was considered.

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National Institute of Standards and Technology

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National Institute of Standards and Technology

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This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

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This image is in the public domain in the United States because it is a work of the United States Federal Government, specifically an employee of the National Institute of Standards and Technology, under the terms of Title 17, Chapter 1, Section 105 of the US Code.

English ∙ 日本語 ∙ македонски ∙ Nederlands ∙ +/−

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:01, 7 March 2014		5,813 × 4,719 (22.73 MB)	NISTResearchLibrary (talk \| contribs)

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Image title	Hydraulic engineers at NBS cooperated with the Housing and Home Finance Agency's effort to develop a nationwide uniform plumbing code. To provide technical data on some of the problems involved, NBS erected in its Hydraulics Laboratory full-scale plumbing systems for one- and two-story duplex houses. These systems exactly duplicated ordinary home plubming except in one important respect- the pupes and fittings (pictured_ were made of transparent plastic. Research was directed toward solving some of the more controversial plubming problems, which were attested to by the variance in plumbing code requirements in municipalities throughout the United States. Motion pictures were made of the important tests so that local groups would have visual facts to work with when plumbing code revision was considered.
Author	National Institute of Standards and Technology
Copyright holder	The images in the Plumbing Code Research Photographic Collection are in the public domain and are not subject to copyright in the United States. However, please pay special attention to the individual works to make sure there are no copyright restrictions indicated. Individual works may require securing other permissions from the original copyright holder. Use of the images from NIST Digital Collections is not restricted, but a statement of attribution is required. Please use the following attribution statement: "National Institute of Standards and Technology Digital Collections, Gaithersburg, MD 20899."
Headline	National Institute of Standards and Technology
Source	Plumbing Code Research Photographic Collection
Short title	Flow conditions in a top floor wet vented bathtub trap
Width	5,813 px
Height	4,719 px
Bits per component	16 16 16
Compression scheme	Uncompressed
Pixel composition	RGB
Orientation	Normal
Number of components	3
Horizontal resolution	600 dpi
Vertical resolution	600 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS6 (Windows)
File change date and time	10:29, 3 July 2013
Exif version	2.21
Color space	Uncalibrated
Unique ID of original document	6E514D6267C45B44D3163DC0E9B38A19
Original transmission location code	16546-5
Date metadata was last modified	06:29, 3 July 2013
Date and time of digitizing	10:47, 23 April 2013
Keywords	United States. National Bureau of Standards--History. Plumbing--Research--Photograph collections.
Contact information	library@nist.gov 100 Bureau Dr, MS 2500 Gaithersburg, MD, 20899 301-975-3052
IIM version	4

File:PlumbingCodeResearch 003.jpg

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