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// CODE SNIPPET

719.1 Thickness of Plaster

Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 719 Fire-Resistance Requirements for Plaster > 719.1 Thickness of Plaster
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The minimum thickness of gypsum plaster or Portland cement plaster used in a fire-resistance-rated system shall be determined by the prescribed fire tests. The plaster thickness shall be measured from the face of the lath where applied to gypsum lath or metal lath.

Related Code Sections


719.1 Fire and Smoke Protection Features, Thickness of Plaster
The minimum thickness of gypsum plaster or Portland cement plaster used in a fire-resistance-rated system shall be determined by the prescribed fire ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 719 Fire-Resistance Requirements for Plaster > 719.1 Thickness of Plaster
719.1 Fire and Smoke Protection Features, Thickness of Plaster
The minimum thickness of gypsum plaster or Portland cement plaster used in a fire-resistance-rated system shall be determined by the prescribed fire ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 719 Fire-Resistance Requirements for Plaster > 719.1 Thickness of Plaster
722.4.1.2 Fire and Smoke Protection Features, Plaster Finishes
for thickness of plaster. Values for Rn0.59for use in Equation 7-9 are given in Table 722.4.1(3). Coefficients for thickness of plaster shall be selected ...
Building Code 2021 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.4 Clay Brick and Tile Masonry > 722.4.1 Masonry Walls > 722.4.1.2 Plaster Finishes
722.4.1.2 Fire and Smoke Protection Features, Plaster Finishes
-resistance rating of the assembly (hours). Rn = The fire-resistance rating of the individual wall (hours). pl = Coefficient for thickness of plaster ...
Building Code 2018 of Illinois > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.4 Clay Brick and Tile Masonry > 722.4.1 Masonry Walls > 722.4.1.2 Plaster Finishes
2511.3 Gypsum Board, Gypsum Panel Products and Plaster, Grounds
Where installed, grounds shall ensure the minimum thickness of plaster as set forth in ASTM C842 and ASTM C926. Plaster thickness shall be measured ...
Building Code 2021 of Illinois > 25 Gypsum Board, Gypsum Panel Products and Plaster > 2511 Interior Plaster > 2511.3 Grounds
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