Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading. Theory: ASTM D is used to determine. ASTM D(). Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading. ASTM D External Loading of Plastic Pipe. Uploaded by Hussein Beqai. This test method covers the determination of loaddeflection characteristics of.
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Compression platens are used for D ASTM D is used to determine pipe stiffness and to characterize the material behavior of plastics in pipe form. Square or circular platens can be used, with most customers choosing a square platen.
While this test method can be used in measuring the pipe stiffness of corrugated plastic pipe or tubing, special conditions and procedures are used. These details are included in the product standards, for example, Specification F Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM D – Plastic Pipe Compression Test
Calculations for ASTM D include percentage load deflection, pipe stiffness, and the stiffness factor. Care must be taken to account for the mid-section of the pipe which will expand slightly as the pipe is compressed. Pipes tested under ASTM D must be smaller than the envelope of the two compression platens by at least a half an inch. The platen has a spherically seated joint that wobbles slightly and lines up the load force on the pipe specimen. Link to Active This link will always route to the current Active version of the standard.
The pipe is compressed between two platens in order to gather load-deflection data. Historical Version s – view previous versions of standard.
These notes and footnotes excluding those in tables and figures shall not be considered as requirements of the test method. It is ast, responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Load measurements are taken at constant intervals.
This is a function of the pipe dimensions and the physical properties of the material of which the pipe is made. A compression cage can be use for tension only testing machines in order to convert the tensile force into a compressive force. A spherically seated compression platen can be used in order to normalize the vector of compression.