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Roof, Wall, and Glass Zone Type Tables

Tuesday, January 19th, 2010

The roof, glass, and wall types for the HVAC building load calculations are taken from the 1997 ASHRAE Fundamentals. Our calculations use the CLTD method. In the 2001 Fundamentals, the load calculation chapter was changed to use the RTS method, but the CLTD method is still considered valid.

The roof types are taken from 1997 ASHRAE Handbook, Fundamentals, Table 31, page 28.42.

The wall types are taken from 1997 ASHRAE Handbook, Fundamentals, Table 33A, pages 28.46-48.

The glass zone types are taken from 1997 ASHRAE Handbook, Fundamentals, Table 35B, page 28.49.

These tables are available below for reference purposes.

The names for the default types are abbreviations. If you have trouble figuring out our system, there is a full description for each type that is displayed when you select it.

Use this table to match the properties of your roof to the ASHRAE Roof Type in the roof project schedule and roof master schedule.

If a parameter combination is not possible, the cell will be blank.

Mass Location** R-Value,
h·ft²·°F/Btu
B7,
1" Wood
C12, 2" HW
Concrete
A3,
Steel Deck
Attic-Ceiling
Combination
Mass inside insulation 0 - 5 2
5 - 10 2
10 - 15 4
15 - 20 4
20 - 25 5
25 - 30
Mass inside insulation,
suspended ceiling
0 - 5 5
5 - 10 8
10 - 15 13
15 - 20 13
20 - 25 14
25 - 30
Mass evenly placed 0 - 5 1 2 1 1
5 - 10 2 1 2
10 - 15 2 1 2
15 - 20 4 2 2
20 - 25 4 2 4
25 - 30
Mass evenly placed,
suspended ceiling
0 - 5 3 1
5 - 10 4 1
10 - 15 5 2
15 - 20 9 2
20 - 25 10 4
25 - 30 10
Mass outside insulation 0 - 5 2
5 - 10 3
10 - 15 4
15 - 20 5
20 - 25 5
25 - 30
Mass outside insulation,
suspended ceiling
0 - 5 3
5 - 10 3
10 - 15 4
15 - 20 5
20 - 25
25 - 30

**C12 is considered massive; others are considered nonmassive

Use these tables to match the properties of your wall to the ASHRAE Wall Type in the wall project schedule and wall master schedule. See Table 11 for definitions of the wall material code numbers.

If a parameter combination is not possible, the cell will be blank.

Table 33A: Wall Types, Mass Located Inside Insulation

Secondary
Material
R-Value,
ft²·°F·h/Btu
Principal Wall Material
A1 A2 B7 B10 B9 C1 C2 C3 C4 C5 C6 C7 C8 C17 C18
Stucco and/or
plaster
0.0 - 2.0
2.0 - 2.5 5 5
2.5 - 3.0 5 3 2 5 6 5
3.0 - 3.5 5 4 2 2 5 6 6
3.5 - 4.0 5 4 2 3 6 6 10 4 6 5
4.0 - 4.75 6 5 2 4 6 6 11 5 10 10
4.75 - 5.5 6 5 2 4 6 6 11 5 10 10
5.5 - 6.5 6 5 2 5 10 7 12 5 11 10
6.5 - 7.75 6 5 4 5 11 7 16 10 11 11
7.75 - 9.0 6 5 4 5 11 7 10 11 11
9.0 - 10.75 6 5 4 5 11 7 10 11 4 11
10.75 - 12.75 6 5 4 5 11 11 10 11 4 11
12.75 - 15.0 10 10 4 5 11 11 10 11 9 12
15.0 - 17.5 10 10 5 5 11 11 11 12 10 16
17.5 - 20.0 11 10 5 9 11 11 15 16 10 16
20.0 - 23.0 11 10 9 9 16 11 15 16 10 16
23.0 - 27.0 16 15
Steel or other
lightweight siding
0.0 - 2.0
2.0 - 2.5 3 2 3 5
2.5 - 3.0 5 2 2 5 3 5
3.0 - 3.5 5 3 1 2 5 5 5
3.5 - 4.0 5 3 2 2 5 5 6 3 5 5
4.0 - 4.75 6 4 2 2 5 5 10 4 6 5
4.75 - 5.5 6 5 2 2 6 6 11 5 6 6
5.5 - 6.5 6 5 2 3 6 6 11 5 6 6
6.5 - 7.75 6 5 2 3 6 6 11 5 6 10
7.75 - 9.0 6 5 2 3 6 6 12 5 6 11
9.0 - 10.75 6 5 2 3 6 6 12 5 6 4 11
10.75 - 12.75 6 5 2 3 6 7 12 6 11 4 11
12.75 - 15.0 6 5 2 4 6 7 12 10 11 5 11
15.0 - 17.5 10 6 4 4 10 7 10 11 9 11
17.5 - 20.0 10 10 4 4 10 11 10 11 10 11
20.0 - 23.0 11 10 4 5 11 11 10 11 10 16
23.0 - 27.0 10 11 16
Face brick 0.0 - 2.0
2.0 - 2.5 3 11
2.5 - 3.0 5 11 6 11 12
3.0 - 3.5 5 12 5 11 11 12 12 12
3.5 - 4.0 5 12 6 12 6 12 12 13 12
4.0 - 4.75 6 13 6 10 13 10 12 12 13 11 16
4.75 - 5.5 6 13 6 11 11 12 13 13 16
5.5 - 6.5 6 13 6 11 11 12 13 13
6.5 - 7.75 6 13 6 11 11 13 13
7.75 - 9.0 6 13 10 16 11 13 13
9.0 - 10.75 6 14 10 16 11 13 14 16
10.75 - 12.75 6 14 10 16 11 13 14 16
12.75 - 15.0 6 11 16 12 13
15.0 - 17.5 10 11 12 13
17.5 - 20.0 10 11 16
20.0 - 23.0 11 15 16
23.0 - 27.0 16

Table 33B: Wall Types, Mass Evenly Placed

Secondary
Material
R-Value,
ft²·°F·h/Btu
Principal Wall Material
A1 A2 B7 B10 B9 C1 C2 C3 C4 C5 C6 C7 C8 C17 C18
Stucco and/or
plaster
0.0 - 2.0 1 3 1 3 3
2.0 - 2.5 1 3 1 2 2 4 4 5
2.5 - 3.0 1 4 1 2 2 2 4 4 5
3.0 - 3.5 1 1 2 2 10 4 5 4
3.5 - 4.0 1 1 2 4 10 4 4
4.0 - 4.75 1 1 2 10 4 4
4.75 - 5.5 1 1 2
5.5 - 6.5 1 2 4 10
6.5 - 7.75 1 2 4 11
7.75 - 9.0 1 2 4 16
9.0 - 10.75 1 2 4 16 4
10.75 - 12.75 1 2 5 4
12.75 - 15.0 2 2 5
15.0 - 17.5 2 2 5
17.5 - 20.0 2 2 9
20.0 - 23.0 2 4 9
23.0 - 27.0 9
Steel or other
lightweight siding
0.0 - 2.0 1 3 1 3 2
2.0 - 2.5 1 3 1 2 1 3 2 3
2.5 - 3.0 1 4 1 2 1 2 4 4 3
3.0 - 3.5 1 1 4 1 5 2 4 4
3.5 - 4.0 1 1 2 2 5 2 4
4.0 - 4.75 1 1 2 10 4 4
4.75 - 5.5 1 1 2
5.5 - 6.5 1 1 2 10
6.5 - 7.75 1 1 4 11
7.75 - 9.0 1 2 4 16
9.0 - 10.75 1 2 4 16 2
10.75 - 12.75 1 2 4 4
12.75 - 15.0 1 2 5
15.0 - 17.5 1 2 5
17.5 - 20.0 1 2 5
20.0 - 23.0 2 4 9
23.0 - 27.0 9
Face brick 0.0 - 2.0 3 6 6
2.0 - 2.5 3 10 5 10 10
2.5 - 3.0 4 10 5 5 5 10 11 10
3.0 - 3.5 11 5 10 5 5 11 11 15 10 10 10
3.5 - 4.0 11 5 10 10 5 5 11 11 16 10 16 10
4.0 - 4.75 11 11 10 5 5 16 11 10 16 16
4.75 - 5.5 11 11 10 5 10 16 16 10 16 16
5.5 - 6.5 16 10 9 10 16 11 11 16 16
6.5 - 7.75 16 11 9 10 16 16 16 16
7.75 - 9.0 16 15 9 10 16 15 16
9.0 - 10.75 16 15 10 10 16 16 10
10.75 - 12.75 16 16 10 10 16 15
12.75 - 15.0 16 16 10 10 16 15
15.0 - 17.5 16 10 15 16
17.5 - 20.0 16 15 15 16
20.0 - 23.0 15 16
23.0 - 27.0 15

Table 33C: Wall Types, Mass Located Outside Insulation

Secondary
Material
R-Value,
ft²·°F·h/Btu
Principal Wall Material
A1 A2 B7 B10 B9 C1 C2 C3 C4 C5 C6 C7 C8 C17 C18
Stucco and/or
plaster
0.0 - 2.0 1 3 1 3 2
2.0 - 2.5 1 3 1 2 1 3 2 3
2.5 - 3.0 1 4 1 2 1 2 4 4 3
3.0 - 3.5 1 1 4 1 5 2 4 4
3.5 - 4.0 1 1 2 2 5 2 4
4.0 - 4.75 1 1 2 10 4 4
4.75 - 5.5 1 1 2
5.5 - 6.5 1 2 2 10
6.5 - 7.75 1 2 4 11
7.75 - 9.0 1 2 4 16
9.0 - 10.75 1 2 4 16 2
10.75 - 12.75 1 2 4 4
12.75 - 15.0 2 2 5
15.0 - 17.5 2 2 5
17.5 - 20.0 2 2 5
20.0 - 23.0 2 4 9
23.0 - 27.0 9
Steel or other
lightweight siding
0.0 - 2.0 1 3 1 3 2
2.0 - 2.5 1 3 1 2 1 3 2 3
2.5 - 3.0 1 4 1 2 1 2 4 4 3
3.0 - 3.5 1 1 4 1 5 2 4 4
3.5 - 4.0 1 1 2 2 5 2 4
4.0 - 4.75 1 1 2 10 4 4
4.75 - 5.5 1 1 2
5.5 - 6.5 1 1 2 110
6.5 - 7.75 1 1 4 11
7.75 - 9.0 1 2 4 16
9.0 - 10.75 1 2 4 16 2
10.75 - 12.75 1 2 4 4
12.75 - 15.0 1 2 5
15.0 - 17.5 1 2 5
17.5 - 20.0 1 2 5
20.0 - 23.0 2 4 9
23.0 - 27.0 9
Face brick 0.0 - 2.0 3 6 6
2.0 - 2.5 3 10 5 10 10
2.5 - 3.0 4 10 5 5 5 10 11 10
3.0 - 3.5 11 5 10 5 5 11 11 15 10 10 10
3.5 - 4.0 11 5 10 10 5 5 11 11 16 10 16 10
4.0 - 4.75 11 11 10 5 5 16 11 10 16 16
4.75 - 5.5 11 11 10 5 10 16 16 10 16 16
5.5 - 6.5 16 10 9 10 16 11 11 16 16
6.5 - 7.75 16 11 9 10 16 16 16 16
7.75 - 9.0 16 15 9 10 16 15 16
9.0 - 10.75 16 15 10 10 16 16 10
10.75 - 12.75 16 16 10 10 16 15
12.75 - 15.0 16 16 10 10 16 15
15.0 - 17.5 16 10 15 16
17.5 - 20.0 16 15 15 16
20.0 - 23.0 15 16
23.0 - 27.0 15

Use this table to match the properties of your room to the Glass Zone Type in the room project schedule, room master schedule, or the Query Room dialog box.

In cases where the effects of the inside shade are negligible, the cell will be blank.

 

Zone Parameters Glass
Zone
Type
Number
of Walls
Floor
Covering
Partition
Type
Inside
Shade
1 - 2 Carpet Gypsum A
Carpet Concrete block B
Vinyl Gypsum Full B
Vinyl Gypsum Half to None C
Vinyl Concrete block Full C
Vinyl Concrete block Half to None D
3 Carpet Gypsum A
Carpet Concrete block Full A
Carpet Concrete block Half to None B
Vinyl Gypsum Full B
Vinyl Gypsum Half to None C
Vinyl Concrete block Full B
Vinyl Concrete block Half to None C
4 Carpet Gypsum A
Vinyl Gypsum Full B
Vinyl Gypsum Half to None C

Table 33 references wall materials that are defined in this table. The following is a partial transcription of Table 11 that only includes the wall materials referenced.

Code
Number
Description L k ρ cp R Mass
A1 1" Stucco 0.0833 0.4 116.0 0.2 0.21 9.7
A2 4" Face brick 0.333 0.77 125.0 0.22 0.43 41.7
B7 1" Wood 0.0833 0.07 37.0 0.6 1.19 3.1
B10 2" Wood 0.167 0.07 37.0 0.6 2.39 6.2
B9 4" Wood 0.333 0.07 37.0 0.6 4.76 12.3
C1 4" Clay tile 0.333 0.33 70.0 0.2 1.01 23.3
C2 4" Lightweight concrete block 0.333 0.22 38.0 0.2 1.51 12.7
C3 4" Heavyweight concrete block 0.333 0.47 61.0 0.2 0.71 20.3
C4 4" Common brick 0.333 0.42 120.0 0.2 0.79 40.0
C5 4" Heavyweight concrete 0.333 1.0 140.0 0.2 0.33 46.7
C6 8" Clay tile 0.667 0.33 70.0 0.2 2.00 46.7
C7 8" Lightweight concrete block 0.667 0.33 38.0 0.2 2.00 25.3
C8 8" Heavyweight concrete block 0.667 0.6 61.0 0.2 1.11 40.7
C17 8" Lightweight concrete block (filled) 0.667 0.08 18.0 0.2 8.34 12.0
C18 8" Heavyweight concrete block (filled) 0.667 0.34 53.0 0.2 1.96 35.4

L = thickness, ft
k = thermal conductivity, Btu/h·ft·°F
ρ = density, lb/ft³
cp = specific heat, Btu/lb·°F
R = thermal resistance, °F·ft²·h/Btu
Mass = unit mass, lb/ft²

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