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|
|
|
Thermal Expansion
In the selection of an expansion joint, one of the critical design factors is the thermal expansion. To compute the linear expansion of a straight run of pipe or ducting, the designer must select the material and determine the linear distance of the ductwork. The linear expansion of the ductwork can be determined from the thermal growth chart using the temperature change between ambient and the design temperature.
| -325 |
-198 |
-2.37 |
(-1.97) |
-2.22 |
(-1.85) |
-3.85 |
(-3.21) |
-2.04 |
(-1.70) |
-2.62 |
(-2.18) |
|
|
-3.00 |
(-2.50) |
| -300 |
-184 |
-2.24 |
(-1.87) |
-2.10 |
(-1.75) |
-3.62 |
(-3.02) |
-1.93 |
(-1.61) |
-2.50 |
(-2.08) |
|
|
-2.83 |
(-2.36) |
| -275 |
-171 |
-2.11 |
(-1.76) |
-1.98 |
(-1.65) |
-3.40 |
(-2.83) |
-1.81 |
(-1.51) |
-2.38 |
(-1.98) |
|
|
-2.66 |
(-2.22) |
| -250 |
-157 |
-1.98 |
(-1.65) |
-1.86 |
(-1.55) |
-3.17 |
(-2.64) |
-1.70 |
(-1.42) |
-2.26 |
(-1.88) |
-2.30 |
(-1.92) |
-2.49 |
(-2.07) |
| -225 |
-143 |
-1.84 |
(-1.53) |
-1.74 |
(-1.45) |
-2.95 |
(-2.46) |
-1.58 |
(-1.32) |
-2.14 |
(-1.78) |
-2.17 |
(-1.81) |
-2.32 |
(-1.93) |
| -200 |
-129 |
-1.71 |
(-1.42) |
-1.62 |
(-1.35) |
-2.72 |
(-2.27) |
-1.47 |
(-1.22) |
-2.03 |
(-1.69) |
-2.04 |
(-1.70) |
-2.15 |
(-1.79) |
| -175 |
-115 |
-1.58 |
(-1.32) |
-1.50 |
(-1.25) |
-2.49 |
(-2.07) |
-1.35 |
(-1.12) |
-1.91 |
(-1.59) |
-1.87 |
(-1.56) |
-1.98 |
(-1.65) |
| -150 |
-101 |
-1.45 |
(-1.21) |
-1.37 |
(-1.14) |
-2.27 |
(-1.89) |
-1.24 |
(-1.03) |
-1.79 |
(-1.49) |
-1.70 |
(-1.42) |
-1.81 |
(-1.51) |
| -125 |
-87 |
-1.30 |
(-1.08) |
-1.23 |
(-1.02) |
-2.01 |
(-1.67) |
-1.12 |
(-0.93) |
-1.59 |
(-1.32) |
-1.54 |
(-1.28) |
-1.60 |
(-1.33) |
| -100 |
-73 |
-1.15 |
(-0.96) |
-1.08 |
(-0.90) |
-1.75 |
(-1.46) |
-0.99 |
(-0.82) |
-1.38 |
(-1.15) |
-1.37 |
(-1.14) |
-1.39 |
(-1.16) |
| -75 |
-59 |
-1.00 |
(-0.83) |
-0.94 |
(-0.78) |
-1.50 |
(-1.25) |
-0.86 |
(-0.72) |
-1.18 |
(-0.98) |
-1.17 |
(-0.97) |
-1.19 |
(-0.99) |
| -50 |
-46 |
-0.84 |
(-0.70) |
-0.79 |
(-0.66) |
-1.24 |
(-1.03) |
-0.72 |
(-0.60) |
-0.98 |
(-0.82) |
-0.97 |
(-0.81) |
-0.98 |
(-0.82) |
| -25 |
-32 |
-0.67 |
(-0.56) |
-0.63 |
(-0.52) |
-0.98 |
(-0.82) |
-0.58 |
(-0.48) |
-0.77 |
(-0.64) |
-0.76 |
(-0.63) |
-0.76 |
(-0.63) |
| 0 |
-18 |
-0.50 |
(-0.42) |
-0.46 |
(-0.38) |
-0.72 |
(-0.60) |
-0.43 |
(-0.36) |
-0.57 |
(-0.47) |
-0.56 |
(-0.47) |
-0.57 |
(-0.47) |
| 25 |
-4 |
-0.32 |
(-0.27) |
-0.30 |
(-0.25) |
-0.46 |
(-0.38) |
-0.27 |
(-0.22) |
-0.37 |
(-0.31) |
-0.36 |
(-0.30) |
-0.37 |
(-0.31) |
| 50 |
10 |
-0.14 |
(-0.12) |
-0.13 |
(-0.11) |
-0.21 |
(-0.17) |
-0.12 |
(-0.10) |
-0.16 |
(-0.13) |
-0.16 |
(-0.13) |
-0.16 |
(-0.13) |
| 70 |
24 |
0.00 |
(0.00) |
0 |
(0.00) |
0.00 |
(0.00) |
0.00 |
(0.00) |
0.00 |
(0.00) |
0.00 |
(0.00) |
0.00 |
(0.00) |
| 100 |
38 |
0.22 |
(0.18) |
0.22 |
(0.18) |
0.33 |
(0.27) |
0.19 |
(0.16) |
0.27 |
(0.22) |
0.26 |
(0.22) |
0.27 |
(0.22) |
| 125 |
52 |
0.41 |
(0.34) |
0.40 |
(0.33) |
0.61 |
(0.51) |
0.35 |
(0.29) |
0.50 |
(0.42) |
0.48 |
(0.40) |
0.50 |
(0.42) |
| 150 |
66 |
0.60 |
(0.50) |
0.58 |
(0.48) |
0.89 |
(0.74) |
0.52 |
(0.43) |
0.74 |
(0.62) |
0.70 |
(0.58) |
0.73 |
(0.61) |
| 175 |
79 |
0.80 |
(0.67) |
0.76 |
(0.63) |
1.17 |
(0.97) |
0.69 |
(0.57) |
0.98 |
(0.82) |
0.93 |
(0.77) |
0.97 |
(0.81) |
| 200 |
93 |
1.00 |
(0.83) |
0.94 |
(0.78) |
1.46 |
(1.22) |
0.86 |
(0.72) |
1.22 |
(1.02) |
1.15 |
(0.96) |
1.21 |
(1.01) |
| 225 |
107 |
1.20 |
(1.00) |
1.13 |
(0.94) |
1.74 |
(1.45) |
1.03 |
(0.86) |
1.47 |
(1.22) |
1.39 |
(1.16) |
1.45 |
(1.21) |
| 250 |
121 |
1.40 |
(1.17) |
1.33 |
(1.11) |
2.03 |
(1.69) |
1.21 |
(1.01) |
1.71 |
(1.42) |
1.63 |
(1.36) |
1.69 |
(1.41) |
| 275 |
135 |
1.61 |
(1.34) |
1.52 |
(1.27) |
2.32 |
(1.93) |
1.38 |
(1.15) |
1.96 |
(1.63) |
1.86 |
(1.55) |
1.94 |
(1.62) |
| 300 |
149 |
1.82 |
(1.52) |
1.71 |
(1.42) |
2.61 |
(2.17) |
1.56 |
(1.30) |
2.21 |
(1.84) |
2.10 |
(1.75) |
2.19 |
(1.82) |
| 325 |
163 |
2.04 |
(1.70) |
1.90 |
(1.58) |
2.91 |
(2.42) |
1.74 |
(1.45) |
2.47 |
(2.06) |
2.34 |
(1.95) |
2.44 |
(2.03) |
| 350 |
177 |
2.25 |
(1.87) |
2.10 |
(1.75) |
3.20 |
(2.67) |
1.93 |
(1.61) |
2.72 |
(2.27) |
2.57 |
(2.14) |
2.69 |
(2.24) |
| 375 |
191 |
2.48 |
(2.07) |
2.30 |
(1.92) |
3.50 |
(2.92) |
2.11 |
(1.76) |
2.98 |
(2.48) |
2.81 |
(2.34) |
2.94 |
(2.45) |
| 400 |
204 |
2.70 |
(2.25) |
2.50 |
(2.08) |
3.80 |
(3.17) |
2.30 |
(1.92) |
3.25 |
(2.71) |
3.05 |
(2.54) |
3.20 |
(2.67) |
| 425 |
218 |
2.93 |
(2.44) |
2.72 |
(2.27) |
4.10 |
(3.42) |
2.49 |
(2.07) |
3.51 |
(2.92) |
3.30 |
(2.75) |
3.46 |
(2.88) |
| 450 |
232 |
3.16 |
(2.63) |
2.93 |
(2.44) |
4.40 |
(3.67) |
2.68 |
(2.23) |
3.78 |
(3.15) |
3.54 |
(2.95) |
3.72 |
(3.10) |
| 475 |
246 |
3.39 |
(2.82) |
3.14 |
(2.62) |
4.70 |
(3.92) |
2.88 |
(2.40) |
4.06 |
(3.38) |
3.79 |
(3.16) |
3.98 |
(3.32) |
| 500 |
260 |
3.62 |
(3.02) |
3.35 |
(2.79) |
5.01 |
(4.17) |
3.08 |
(2.57) |
4.33 |
(3.61) |
4.03 |
(3.36) |
4.24 |
(3.53) |
| 525 |
274 |
3.86 |
(3.22) |
3.58 |
(2.98) |
5.31 |
(4.42) |
3.28 |
(2.73) |
4.61 |
(3.84) |
4.28 |
(3.57) |
4.51 |
(3.76) |
| 550 |
288 |
4.10 |
(3.42) |
3.80 |
(3.17) |
5.62 |
(4.68) |
3.48 |
(2.90) |
4.89 |
(4.07) |
4.53 |
(3.77) |
4.78 |
(3.98) |
| 575 |
302 |
4.35 |
(3.62) |
4.02 |
(3.35) |
5.93 |
(4.94) |
3.69 |
(3.07) |
5.17 |
(4.31) |
4.77 |
(3.97) |
5.05 |
(4.21) |
| 600 |
316 |
4.60 |
(3.83) |
4.24 |
(3.53) |
6.24 |
(5.20) |
3.90 |
(3.25) |
5.46 |
(4.55) |
5.02 |
(4.18) |
5.33 |
(4.44) |
| 625 |
329 |
4.85 |
(4.04) |
4.47 |
(3.72) |
6.56 |
(5.46) |
4.10 |
(3.42) |
5.75 |
(4.79) |
5.29 |
(4.41) |
5.60 |
(4.66) |
| 650 |
343 |
5.11 |
(4.26) |
4.69 |
(3.91) |
6.87 |
(5.72) |
4.31 |
(3.59) |
6.04 |
(5.03) |
5.54 |
(4.61) |
5.88 |
(4.90) |
| 675 |
357 |
5.36 |
(4.46) |
4.92 |
(4.10) |
7.18 |
(5.98) |
4.52 |
(3.77) |
6.34 |
(5.28) |
5.80 |
(4.83) |
6.16 |
(5.13) |
| 700 |
371 |
5.62 |
(4.68) |
5.14 |
(4.28) |
7.50 |
(6.25) |
4.73 |
(3.94) |
6.64 |
(5.53) |
6.06 |
(5.05) |
6.44 |
(5.36) |
| 725 |
385 |
5.89 |
(4.91) |
5.38 |
(4.48) |
7.82 |
(6.51) |
4.95 |
(4.12) |
6.94 |
(5.78) |
6.32 |
(5.26) |
6.73 |
(5.61) |
| 750 |
399 |
6.16 |
(5.13) |
5.62 |
(4.68) |
8.15 |
(6.79) |
5.16 |
(4.30) |
7.24 |
(6.03) |
6.58 |
(5.48) |
7.02 |
(5.85) |
| 775 |
413 |
6.43 |
(5.36) |
5.86 |
(4.88) |
8.47 |
(7.06) |
5.38 |
(4.48) |
7.54 |
(6.28) |
6.84 |
(5.70) |
7.31 |
(6.09) |
| 800 |
427 |
6.70 |
(5.58) |
6.10 |
(5.08) |
8.80 |
(7.33) |
5.60 |
(4.66) |
7.85 |
(6.54) |
7.10 |
(5.91) |
7.60 |
(6.33) |
| 825 |
441 |
6.97 |
(5.81) |
6.34 |
(5.28) |
9.13 |
(7.61) |
5.82 |
(4.85) |
8.16 |
(6.80) |
7.38 |
(6.15) |
7.89 |
(6.57) |
| 850 |
454 |
7.25 |
(6.04) |
6.59 |
(5.49) |
9.46 |
(7.88) |
6.04 |
(5.03) |
8.48 |
(7.06) |
7.67 |
(6.39) |
8.19 |
(6.82) |
| 875 |
468 |
7.53 |
(6.27) |
6.83 |
(5.69) |
9.79 |
(8.16) |
6.27 |
(5.22) |
8.80 |
(7.33) |
7.95 |
(6.62) |
8.48 |
(7.06) |
| 900 |
482 |
7.81 |
(6.51) |
7.07 |
(5.89) |
10.12 |
(8.43) |
6.49 |
(5.41) |
9.12 |
(7.60) |
8.23 |
(6.86) |
8.78 |
(7.31) |
| 925 |
496 |
8.08 |
(6.73) |
7.31 |
(6.09) |
10.46 |
(8.71) |
6.72 |
(5.60) |
9.44 |
(7.86) |
8.52 |
(7.10) |
9.07 |
(7.56) |
| 950 |
510 |
8.35 |
(6.96) |
7.56 |
(6.30) |
10.80 |
(9.00) |
6.94 |
(5.78) |
9.77 |
(8.14) |
8.80 |
(7.33) |
9.36 |
(7.80) |
| 975 |
524 |
8.62 |
(7.18) |
7.81 |
(6.51) |
11.14 |
(9.28) |
7.17 |
(5.97) |
10.09 |
(8.40) |
9.09 |
(7.57) |
9.66 |
(8.05) |
| 1000 |
538 |
8.89 |
(7.41) |
8.06 |
(6.71) |
11.48 |
(9.56) |
7.40 |
(6.16) |
10.42 |
(8.68) |
9.37 |
(7.81) |
9.95 |
(8.29) |
| 1025 |
552 |
9.18 |
(7.65) |
8.30 |
(6.91) |
11.82 |
(9.85) |
7.62 |
(6.35) |
10.76 |
(8.96) |
9.66 |
(8.05) |
10.25 |
(8.54) |
| 1050 |
566 |
9.46 |
(7.88) |
8.55 |
(7.12) |
12.16 |
(10.13) |
7.85 |
(6.54) |
11.09 |
(9.24) |
9.94 |
(8.28) |
10.54 |
(8.78) |
| 1075 |
579 |
9.75 |
(8.12) |
8.80 |
(7.33) |
12.50 |
(10.41) |
8.08 |
(6.73) |
11.43 |
(9.52) |
10.23 |
(8.52) |
10.83 |
(9.02) |
| 1100 |
593 |
10.04 |
(8.36) |
9.05 |
(7.54) |
12.84 |
(10.70) |
8.31 |
(6.92) |
11.77 |
(9.80) |
10.51 |
(8.75) |
11.12 |
(9.26) |
| 1125 |
607 |
10.30 |
(8.58) |
9.28 |
(7.73) |
13.18 |
(10.98) |
8.53 |
(7.11) |
12.11 |
(10.09) |
10.80 |
(9.00) |
11.42 |
(9.51) |
| 1150 |
621 |
10.57 |
(8.80) |
9.52 |
(7.93) |
13.52 |
(11.26) |
8.75 |
(7.29) |
12.45 |
(10.37) |
11.09 |
(9.24) |
11.72 |
(9.76) |
| 1175 |
635 |
10.84 |
(9.03) |
9.76 |
(8.13) |
13.87 |
(11.55) |
8.97 |
(7.47) |
12.80 |
(10.66) |
11.37 |
(9.47) |
12.01 |
(10.00) |
| 1200 |
649 |
11.10 |
(9.25) |
10.00 |
(8.33) |
14.20 |
(11.83) |
9.19 |
(7.66) |
13.15 |
(10.95) |
11.66 |
(9.71) |
12.31 |
(10.25) |
| 1225 |
663 |
11.38 |
(9.48) |
10.26 |
(8.55) |
14.55 |
(12.12) |
9.42 |
(7.85) |
13.51 |
(11.25) |
11.98 |
(9.98) |
12.60 |
(10.50) |
| 1250 |
677 |
11.66 |
(9.71) |
10.53 |
(8.77) |
14.88 |
(12.40) |
9.65 |
(8.04) |
13.86 |
(11.55) |
12.29 |
(10.24) |
12.89 |
(10.74) |
| 1275 |
691 |
11.94 |
(9.95) |
10.79 |
(8.99) |
15.22 |
(12.68) |
9.88 |
(8.23) |
14.22 |
(11.85) |
12.61 |
(10.50) |
13.17 |
(10.97) |
| 1300 |
704 |
12.22 |
(10.18) |
11.06 |
(9.21) |
15.56 |
(12.96) |
10.11 |
(8.42) |
14.58 |
(12.15) |
12.93 |
(10.77) |
13.46 |
(11.21) |
| 1325 |
718 |
12.50 |
(10.41) |
11.30 |
(9.41) |
15.90 |
(13.24) |
10.33 |
(8.60) |
14.94 |
(12.45) |
13.25 |
(11.04) |
13.76 |
(11.46) |
| 1350 |
732 |
12.78 |
(10.65) |
11.55 |
(9.62) |
16.24 |
(13.53) |
10.56 |
(8.80) |
15.30 |
(12.74) |
13.56 |
(11.30) |
14.05 |
(11.70) |
| 1375 |
746 |
13.06 |
(10.88) |
11.80 |
(9.83) |
16.58 |
(13.81) |
10.79 |
(8.99) |
15.66 |
(13.04) |
13.88 |
(11.56) |
14.35 |
(11.95) |
| 1400 |
760 |
13.34 |
(11.11) |
12.05 |
(10.04) |
16.92 |
(14.09) |
11.01 |
(9.17) |
16.02 |
(13.34) |
14.20 |
(11.83) |
14.65 |
(12.20) |
|
|