ESTIMATING GUIDE FOR SUSPENDED ACOUSTICAL
CEILINGS
When Estimating an Acoustical Ceiling using the
Square Footage only -- Use this handy formula:
USG Donn Grid
1 Box of Main Tees
2 Boxes of 4' Cross Tees
2 Boxes of 2' Cross Tees (If estimating a 2' x 2' ceiling)
1 Box of Wall Angle (480 Lin Feet P/Ctn)
The Above Listed Quantities Is Equal To = 1,000 Square Feet
Formula Break Down for Exact Pieces:
*This works with all brands*
Main Tees = Square Feet (Divided By) 12 (Divided By) 4 = _______
[Number of Pieces Needed]
Cross Tees = Square Feet (Divided By) 4 (Divided By) 2 = _______
[Number of Pieces Needed]
Notes:
#1. When estimating a 2' x 2' ceiling -- use the same amount of 2'
Cross Tees as the amount of 4' Cross Tees.
#2. On Average, You should figure on using 1 Carton of Wall Angle
for every 1,800 Square Feet of ceiling area.
When Estimating an Acoustical Ceiling using the
Individual Room Sizes -- Use this handy formula:
|
2' X 4' PANELS |
|
*SIDE A* |
|
ROOM
SIZE |
8' |
10' |
12' |
14' |
16' |
18' |
20' |
22' |
24' |
26' |
28' |
30' |
32' |
34' |
36' |
38' |
40' |
42' |
44' |
46' |
48' |
50' |
|
8' S |
8
|
10
|
12
|
14
|
16
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
34
|
36
|
38
|
40
|
42
|
44
|
46
|
48
|
50
|
|
12' I |
12
|
15
|
18
|
21
|
24
|
27
|
30
|
33
|
36
|
39
|
42
|
45
|
48
|
51
|
54
|
57
|
60
|
63
|
66
|
69
|
72
|
75
|
|
16' D |
16
|
20
|
24
|
28
|
32
|
36
|
40
|
44
|
48
|
52
|
56
|
60
|
64
|
68
|
72
|
76
|
80
|
84
|
88
|
92
|
96
|
100
|
|
20' E |
20
|
25
|
30
|
35
|
40
|
45
|
50
|
55
|
60
|
65
|
70
|
75
|
80
|
85
|
90
|
95
|
100
|
105
|
110
|
115
|
120
|
125
|
|
24' . |
24
|
30
|
36
|
42
|
48
|
54
|
60
|
66
|
72
|
78
|
84
|
90
|
96
|
102
|
108
|
114
|
120
|
126
|
132
|
138
|
144
|
150
|
|
28' B |
28
|
35
|
42
|
49
|
56
|
63
|
70
|
77
|
84
|
91
|
98
|
105
|
112
|
119
|
126
|
133
|
140
|
147
|
154
|
161
|
168
|
175
|
|
32' . |
32
|
40
|
48
|
56
|
64
|
72
|
80
|
88
|
96
|
104
|
112
|
120
|
128
|
136
|
144
|
152
|
160
|
168
|
176
|
184
|
192
|
200
|
|
36' . |
36
|
45
|
54
|
63
|
72
|
81
|
90
|
99
|
108
|
117
|
126
|
135
|
144
|
153
|
162
|
171
|
180
|
189
|
198
|
207
|
216
|
225
|
|
40' . |
40
|
50
|
60
|
70
|
80
|
90
|
100
|
110
|
120
|
130
|
140
|
150
|
160
|
170
|
180
|
190
|
200
|
210
|
220
|
230
|
240
|
250
|
|
12' MAIN RUNNERS |
|
*SIDE A* |
|
ROOM
SIZE |
8' |
10' |
12' |
14' |
16' |
18' |
20' |
22' |
24' |
26' |
28' |
30' |
32' |
34' |
36' |
38' |
40' |
42' |
44' |
46' |
48' |
50' |
|
8' S |
1
|
2 |
2 |
2
|
2
|
2
|
2
|
2
|
2
|
3
|
3
|
3
|
3
|
3
|
3
|
4
|
4
|
4
|
4
|
4
|
4
|
5
|
|
12' I |
2
|
2
|
2
|
3
|
3
|
3
|
4
|
4
|
4
|
5
|
5
|
5
|
6
|
6
|
6
|
7
|
7
|
7
|
8
|
8
|
8
|
9
|
|
16' D |
2
|
3
|
3
|
4
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
8
|
8
|
9
|
9
|
10
|
10
|
11
|
11
|
12
|
12
|
12
|
|
20' E |
3
|
4
|
4
|
5
|
6
|
6
|
7
|
8
|
8
|
9
|
10
|
10
|
11
|
12
|
12
|
13
|
14
|
14
|
15
|
16
|
16
|
17
|
|
24' . |
4
|
5
|
5
|
6
|
7
|
8
|
9
|
10
|
10
|
11
|
12
|
13
|
14
|
15
|
15
|
16
|
17
|
18
|
19
|
20
|
20
|
21
|
|
28' B |
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
|
32' . |
5
|
6
|
7
|
9
|
10
|
11
|
12
|
13
|
14
|
16
|
17
|
18
|
19
|
20
|
21
|
23
|
24
|
25
|
26
|
27
|
28
|
30
|
|
36' . |
6
|
7
|
8
|
10
|
11
|
12
|
14
|
15
|
16
|
18
|
19
|
20
|
22
|
23
|
24
|
26
|
27
|
28
|
30
|
31
|
32
|
34
|
|
40' . |
6
|
8
|
9
|
11
|
12
|
14
|
15
|
17
|
18
|
20
|
21
|
23
|
24
|
26
|
27
|
29
|
30
|
32
|
33
|
35
|
36
|
38
|
|
4' CROSS TEES |
|
*SIDE A* |
|
ROOM
SIZE |
8' |
10' |
12' |
14' |
16' |
18' |
20' |
22' |
24' |
26' |
28' |
30' |
32' |
34' |
36' |
38' |
40' |
42' |
44' |
46' |
48' |
50' |
|
8' S |
8 |
10
|
12
|
12
|
14
|
16
|
18
|
20
|
22
|
24
|
26
|
28
|
30
|
32
|
34
|
36
|
38
|
40
|
42
|
44
|
46
|
48
|
|
12' I |
12
|
15
|
16
|
16
|
21
|
24
|
27
|
30
|
33
|
36
|
39
|
42
|
45
|
48
|
51
|
54
|
57
|
60
|
63
|
66
|
69
|
72
|
|
16' D |
12
|
16
|
20
|
24
|
28
|
32
|
36
|
40
|
44
|
48
|
52
|
56
|
60
|
64
|
68
|
72
|
76
|
81
|
85
|
89
|
93
|
97
|
|
20' E |
15
|
20
|
25
|
30
|
35
|
40
|
45
|
50
|
55
|
60
|
65
|
70
|
75
|
80
|
85
|
91
|
96
|
101
|
106
|
111
|
116
|
121
|
|
24' . |
18
|
24
|
30
|
36
|
42
|
48
|
54
|
60
|
66
|
72
|
78
|
84
|
90
|
96
|
103
|
109
|
115
|
121
|
127
|
133
|
139
|
146
|
|
28' B |
21
|
28
|
35
|
42
|
49
|
56
|
63
|
70
|
77
|
84
|
91
|
98
|
105
|
113
|
120
|
127
|
134
|
141
|
148
|
156
|
163
|
170
|
|
32' . |
24
|
32
|
40
|
48
|
56
|
64
|
72
|
80
|
88
|
96
|
104
|
112
|
120
|
129
|
137
|
145
|
153
|
162
|
170
|
178
|
186
|
194
|
|
36' . |
27
|
36
|
45
|
54
|
63
|
72
|
81
|
90
|
99
|
108
|
117
|
126
|
136
|
145
|
154
|
163
|
173
|
182
|
191
|
200
|
210
|
219
|
|
40' . |
30
|
40
|
50
|
60
|
70
|
80
|
90
|
100
|
110
|
120
|
130
|
140
|
151
|
161
|
171
|
181
|
192
|
202
|
212
|
223
|
233
|
243
|
|
12' WALL ANGLE |
|
*SIDE A* |
|
ROOM
SIZE |
8' |
10' |
12' |
14' |
16' |
18' |
20' |
22' |
24' |
26' |
28' |
30' |
32' |
34' |
36' |
38' |
40' |
42' |
44' |
46' |
48' |
50' |
|
8' S |
4
|
4
|
4
|
5
|
5
|
6
|
6
|
6
|
7
|
7
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
|
12' I |
4
|
5
|
5
|
6
|
6
|
6
|
7
|
7
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
12
|
13
|
|
16' D |
5
|
6
|
6
|
6
|
7
|
7
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
12
|
13
|
13
|
14
|
|
20' E |
6
|
6
|
7
|
7
|
8
|
8
|
8
|
9
|
9
|
10
|
10
|
10
|
11
|
11
|
12
|
12
|
12
|
13
|
13
|
14
|
14
|
14
|
|
24' . |
7
|
7
|
8
|
8
|
9
|
9
|
9
|
10
|
10
|
11
|
11
|
11
|
12
|
12
|
13
|
13
|
13
|
14
|
14
|
15
|
15
|
15
|
|
28' B |
8
|
8
|
8
|
9
|
10
|
9
|
10
|
11
|
10
|
12
|
11
|
12
|
13
|
12
|
14
|
13
|
14
|
15
|
14
|
16
|
15
|
16
|
|
32' . |
8
|
9
|
9
|
10
|
11
|
10
|
10
|
12
|
11
|
13
|
12
|
12
|
14
|
13
|
15
|
14
|
14
|
16
|
15
|
17
|
16
|
16
|
|
36' . |
9
|
10
|
10
|
10
|
12
|
11
|
11
|
13
|
11
|
14
|
13
|
13
|
15
|
13
|
16
|
15
|
15
|
17
|
15
|
18
|
17
|
17
|
|
40' . |
10
|
11
|
11
|
11
|
13
|
11
|
12
|
14
|
12
|
15
|
13
|
14
|
16
|
14
|
17
|
15
|
16
|
18
|
16
|
19
|
17
|
18
|
|
NOTE: When estimating a ceiling using 2' x
2' panels, add one 2' tee for
every 2' x 4' panel. |
|
*SIDE A* = Room dimension perpendicular to joist direction. |
|
*SIDE B* = Room dimension parallel to joist direction. |
*This Chart Show The Absolute Minimum Amount Of
Grid Needed To Cover The Room Size Listed -- Refer To Your
Lighting Plan For Additional Tees*
Contractor
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