Standard Practice for Determining the Steady-State Thermal Transmittance of Steel Door and Frame Assemblies
SDI 113-13 (R18)
1 Purpose
1.1 The purpose of this practice is to establish a standard test specimen size, test conditions and a rating system for determining the thermal transmittance of operable steel door and frame assemblies.
1.2 This practice refers to the standardized thermal transmittance; Ust of an operable steel door and frame assembly installed vertically in the absence of solar and air leakage effects.
1.3 This practice employs the use of ASTM C1363-05, Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus, ASTM C1199-09e1, Standard Test Method for Measuring the Steady-State Thermal Transmittance of Fenestration Systems Using Hot Box Methods and ASTM E1423-06 Practice for Determining Steady State Thermal Transmittance of Fenestration Systems.
2 Test specimen
2.1 Single doors and pairs of doors shall be tested as nominal 3′0″ (914mm) wide x 7′0″ (2134mm) high and 6′0″(1828mm) wide x 7′0″ (2134mm) high openings, respectively.
2.2 The test specimens shall consist of door, frame, weather-stripping system, glazing (if included) and hardware and be fully operable prior to the sealing of the assembly.
Note: ASTM E1423 requires sealing of the test specimen to prevent air leakage.
3 Experimental Procedure
3.1 The specimen shall be tested in accordance with ASTM C1199, C1363 and E1423.
4 Calculation
4.1 The standardized Thermal Transmittance (Ust) shall be calculated per the CTS method described in ASTM C1199.
5 Performance Ratings
Table 1
|
U-Value
|
< 1/2 Light
|
> 1/2 Light
|
Rating
|
|
> 0.46
|
>0.52
|
> 0.57
|
0
|
|
≤ 0.45
|
≤ 0.51
|
≤ 0.56
|
1
|
|
≤ 0.43
|
≤ 0.49
|
≤ 0.54
|
2
|
|
≤ 0.41
|
≤ 0.47
|
≤ 0.52
|
3
|
|
≤ 0.39
|
≤ 0.45
|
≤ 0.50
|
4
|
|
≤ 0.37
|
≤ 0.43
|
≤ 0.48
|
5
|
|
≤ 0.35
|
≤ 0.41
|
≤ 0.46
|
6
|
|
≤ 0.33
|
≤ 0.39
|
≤ 0.44
|
7
|
|
≤ 0.31
|
≤ 0.37
|
≤ 0.42
|
8
|
|
≤ 0.29
|
≤ 0.35
|
≤ 0.40
|
9
|
|
≤ 0.27
|
≤ 0.33
|
≤ 0.38
|
10
|
6 Report
6.1 The report shall contain the following information:
6.2 A detailed description of the test specimen components, i.e. Door, frame, hardware, glazing and weather-strip that includes model or series numbers.
6.3 If the test specimen is of a size other than that specified in Section 2.1, the reason for the deviation should be noted.
6.4 All of the information specified in Section 9 of test method ASTM C1199.
6.5 A statement affirming that the test was conducted in accordance with this standardized procedure.
6.6 A rating as defined in Table 1.