SPRAY FIREPROOFlNG—ASTM STANDARDS. ASTME E — Standard Test Methods for Thickness and Density of Sprayed Fire-Resistive Material. ASTM-Epdf – Download as PDF File .pdf), Text File .txt) or read online. ASTM E Uploaded by chankawai Standard Test Methods for Thickness and Density of Sprayed Fire-Resistive Material (SFRM) Applied to Structural.
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ICS Number Code A sample Operating Procedure follows: Thickness measurements are concerned with the application of the SFRM, while the density measurements pertain to the product itself. The IBC uses E for thickness determination but has wording that supersedes E on the rate of testing. Also I would encourage you and your team to use the displacement method for determining density, Section 8.
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
While the wording in the manual seemed confusing, an appendix clarified that 12 thickness measurements should be taken.
ASTM E605/E605M – 93(2015)E1
The concept of a correction formula has a valid basis and should not be considered as a loop hole or an easy way out. Consult the rating criteria. And Note 4 states the following: These include sprayed fiber and cementitious types. Combining values from the two systems 6e05 result in non-conformance with the standard. Is this a contradiction and which frequency should be used?
The test methods are applicable to both laboratory and field procedures, as indicated in Section 7. Cutting around the cap down to the substrate will isolate the bond strength to only adhesion and may there by indicate why your project sounds hollow but would not be a standard method to substantiate an unacceptable application of SRFM.
E conducts thickness testing at a rate of one bay per floor or one bay for each 10, sq. Since you suspect an improper application, it would be prudent to test the SFRM in the standard method and to also cut around the cap and test just for adhesiveness and report the findings to the design professional.
Testing Engineers – Case Studies
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This would result in an overstatement of the protection level, which must be avoided. My question is after setting the cap with epoxy and letting it set for approximately 24 hours are we to cut around the cap to the substrate or are we to test it in-place without cutting around the cap?
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. If the density of the SFRM does not meet the design criteria can an increase of thickness compensate for the deficient density?
With such a conflict we refer to IBC It is based on the same design concept of the original tested assembly but it is up to the design professional to determine if the increase in thickness compensates for the low density of the SFRM.
From a practical viewpoint, the use of actual measurements for density calculations prevents “false high” density calculations. The apparatus, materials, and procedure used to apply the SFRM for laboratory tests shall be the same as is used for the construction of either of the test assemblies described in Test Methods E and E It is the intent of these test methods to provide procedures to determine these properties.
When measuring density, IBC refers us e05 section 8. It reduces some of the measuring and sampling variables that are inherent with other methods. On the other hand, IBC However, this section does note that 12 thickness measurements are to be taken, and no statement is made regarding adjusting the average of the 12 measurements.
With such a significant discrepancy between the two can you explain the right procedure? Link to Active This link will always route to the current Active version of the standard. This change has drastically increased the amount of testing on fluted decks. So, when writing an SOP for performing thickness determination the following could be adopted: He stated the following: You are correct, the averaging calculations for thickness measurements as mentioned in ASTM E section 8.
During a recent project we found the Sprayed Fire-Resistive Material applied to the steel substrate to sound hollow upon surface tapping. If we go back to astj IBC This method measures the volume of the qstm without the need for thickness or area measurements.
It makes no reference to Note 4 in using a correction formula. However the user should be cautious as to the extent of the reference. Bond Strength of Fireproofing.
When axtm question was asked of Luke Woods of W. Work Item s – proposed revisions of this standard. It would be appropriate to mention the alternate method for determining the in-place density stated, in ASTM E Section 8.
For every sq. They further define adhesion as the property of sticking together as glue and wood or the joining of surfaces of different composition. For SFRM to provide the required level of protection both the minimum average thickness and the density requirements must be met. E conducts thickness testing at a Rate of one bay per floor or one astk for each 10, sq.
It can be used to retest a sample that may be in question.
As a laboratory we believe the measurements should be actual not allowables. Historical Version s – view previous versions of standard.