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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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.
If the density of the SFRM does not meet the design criteria can an increase of thickness compensate for the deficient density? When measuring density, IBC refers us to section 8.
A sample Operating Procedure follows: It makes no reference to Note 4 in using a correction formula. The test methods are applicable to both laboratory and field procedures, as aatm in Section 7. Also I would encourage you and your team to use the displacement method for determining density, Section 8.
During a recent project we found the Sprayed Fire-Resistive Material applied to the steel substrate to sound hollow upon surface tapping. You are correct, the averaging calculations for thickness measurements as mentioned in ASTM E section 8.
As a laboratory we believe the measurements should be actual not allowables. From a practical viewpoint, the use of actual measurements for density calculations prevents “false high” density calculations.
It would be appropriate to mention the alternate method for determining the in-place density stated, in ASTM E Section 8. This change has drastically increased the amount of testing on fluted decks. 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 These include sprayed fiber and cementitious types.
It is the intent of these test methods to provide procedures to determine these properties.
Testing Engineers – Case Studies
It can be used to retest a sample that may be in question. It is based on the same design concept of the original tested assembly but it is up to the design professional to determine if asmt increase in thickness compensates for the low density of the SFRM. With such a significant discrepancy between the two can you explain the right procedure? The IBC uses E for thickness determination but has wording that supersedes E on the rate of testing.
It reduces some of the measuring and sampling variables that are inherent with other methods. 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.
While the wording in the manual seemed confusing, an appendix clarified that 12 thickness measurements should be taken. Work Item s – proposed revisions of this standard. Bond Strength of Fireproofing.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
However the user should be cautious as to the extent of the reference.
ASTM E605/E605M – 93(2015)E1
If we go back to the IBC With such a conflict we refer to IBC Link to Active This link will always route to the current Adtm version of the standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. And Note 4 states the following: 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 astj in-place without cutting around the cap?
E f605 thickness testing at a rate of one bay per floor or one bay for each 10, sq. Is this a contradiction and which frequency should be used?
They further define adhesion as the property of sticking together as glue and wood or the joining of surfaces of different composition. This would result in an overstatement of the ast level, which must be avoided. ICS Number Code For every sq.