Ninth Edition Handbook Eratta

Transcription

NINTH EDITION HANDBOOK ERRATA
If you, as a user of the IESNA Lighting Handbook, 9th Edition, believe you have located an error not covered by
the following revisions, you should e-mail your information to Pat McGillicuddy at: [email protected] or
send a letter to: Pat McGillicuddy, Manager of Technology, IES, 120 Wall Street 17th Floor, New York, NY
10005. Additions will be posted to this list as they become available. This errata list was last updated on August 4,
2006. Color headings indicate the latest postings.
Please confine your comments to specific typographical errors or misstatements of fact in the Handbook text
and/or graphics. Do not attempt to revise or update the Handbook itself.
• Chapter 1, page 1-7
Immediately underneath Figure 1-7, find Equation 1-5. The summation limits for this equation are incorrect
and should be revised as shown below:
780
F = 683 ^ PλVλ∆λ
(1-5)
380
This change will put Equation 1-5 in agreement with the wavelength limits for visible light as they are presented in Figure 1-1 on page 1-2.
In the right-hand column, under the subhed Fabricated Sources, the last sentence in the first paragraph should
be modified (in the interests of clarity and correctness) to read:
“Incandescent rare-earth elements can emit discrete spectra, whereas some high-pressure discharges can produce a continuous spectrum.”
The caption for Figure 1-29 contains an incorrect symbol for the critical angle. The second sentence in this
caption should read:
“The critical angle uic varies with the medium.”
The figure reference (to 1-33c) given in the sentence concluding on the top line of the left-hand column is
incorrect.
This sentence (which begins on page 1-20) should read:
“In a method developed by Fresnel, as shown in Figure 1-32c, the curved face of the stepped lens becomes
curved rings and the back is flat.”
1
Figure 2-11a for a Type A goniometer is incorrect. The correct figure is shown below:
Photocell
Y-
X+
X-
Y+
Curved arrows (around luminaire axes)
show luminaire rotation
(a)
Y+
X-
Curved arrows (on sphere surface)
indicate photometric angles
X+
Y(b)
X = -90
X = 90
Y+
X(0,0)
Reference
direction
(c)
2
X=0
Figure 2-11b for a Type B goniometer is incorrect. The correct figure is shown below:
Photocell
VV+
Curved arrows (around luminaire axes)
show luminaire rotation
H+
(a)
H-
V+
HH+
VCurved arrows (on sphere surface)
(b)
V = 90
H-
V=0
V+
(0,0)
Reference
direction
V = -90
(c)
3
Figure 2-11c for a Type C goniometer is incorrect. The correct figure is shown below:
X+
Y +
Curved Y+ arrow shows
rotation of photocell
Photocell
Curved X+ arrow shows
rotation of luminaire
(a)
Curved arrows (on sphere surface)
X+
Y+
(b)
Y = 90
X+
Y = 90
Y=0
X=0
(c)
4
In the right-hand column, six lines up from the bottom, the reference to Figure 2-18 is incorrect. The reference
should be to Figure 2-19.
In the section titled “Floodlight-Type Luminaire” that begins toward the bottom of the left-hand column, the
words “beam spread(s)” should be replaced with “field angle(s)” in seven different places:
• First Paragraph - in the second line and in the seventh line.
• Second Paragraph - in the fifth/sixth line, the seventh line, the eighth line, and the ninth line.
• Last Paragraph - in the fourth line.
At the bottom of the page, section (c) of the caption for Figure 2-24 should be modified (in the interests of clarity and correctness) to read:
(c) regular area with single row of individual luminaries;
(Note: the word “individual” replaces the word “continuous”)
Equation 3-13 at the top of the right-hand column should be changed to read:
1
0.25
UGR + 8 log 10 }
Lb
n
L 2ω
i i
}
2^
i=1 Pi
2
(3-13)
Also, two of the defined terms immediately following equation 3-13 should be revised:
• The definition for “Eb” should be removed and replaced with:
“Lb = luminance of the field of view, in cd/m2, not including luminaire luminance.” This gives
agreement with the notation used in Equation 3-13.
• The last definition should be modified. Here, lower-case “pi”should replaced with upper-case
“Pi” for agreement with the notation used in Equation 3-13.
Immediately below the list of defined terms, where the main text resumes, the first sentence should be
replaced with the following:
This formula generally results in UGR values ranging from 10 to 30 where a high value indicates significant discomfort glare and a low value indicates little discomfort glare. Electric lighting systems producing UGR values of less than 10 are assumed to produce no discomfort.
These changes will allow consistent presentation for the Unified Glare Rating (UGR) equation, which appears
again on page 9-28.
In Figure 4-3 under Standard Illuminant, read down the column marked l (nm) until you get to 740. Then read
across the row to column C where the number given is 91.50. This number is incorrect and should be 61.50.
5
Figure 6-35 is incomplete because it does not include all the relevant labeling for its vertical axis and its horizontal axis. A revised Figure 6-35 is shown below:
68
Relative efficacy
lumens per watt
64
60
56
Fig. 6.69
52
0
4
8
16
12
Bulb diameter in 1/8 inches
20
At the top of the page, Figure 6-69 is in error, specifically the curves that are presented in parts (b) and (c) and
the second sentence of the caption, which should be deleted. The entire figure and its caption should be
replaced with the revised Figure 6-69 shown below:
Figure 6-69. Lumen output vs. power input for high-intensity discharge lamps: (a) mercury vapor,
(b) quartz metal halide, and (c) high-pressure sodium.
In the middle of the left-hand column, four cutoff classifications are defined. A slight rewording of the first three
definitions is required to correct them and put them in agreement with the cutoff classification definitions presented in RP-8-00. Here are the corrected definitions with the major change in each one shown in bold italics:
Name
Description of intensity distribution
————————————————————————————————————————————
Full cutoff
A luminaire light distribution where zero candela intensity occurs at or above an angle of 90° above
nadir. Additionally, the candela per 1000 lamp lumens does not numerically exceed 100 (10%) at or
above a vertical angle of 80° above nadir. This applies to all lateral angles around the luminaire.
6
Cutoff
A luminaire light distribution where the candela per 1000 lamp lumens does not numerically
exceed 25 (2.5%) at or above an angle of 90° above nadir, and 100 (10%) at or above a vertical
angle of 80° above nadir. This applies to all lateral angles around the luminaire.
Semicutoff
A luminaire light distribution where the candela per 1000 lamp lumens does not numerically
exceed 50 (5%) at or above an angle of 90° above nadir, and 200 (20%) at or above a vertical
angle of 80° above nadir. This applies to all lateral angles around the luminaire.
Equation 8-1 in the left-hand column is incorrect an should be replaced by:
ET = 0.1644sin
3 }}
4 – 0.1273sin 3 }}
365.25
365.25 4
4π(J – 81.6)
2π(J – 2.5)
(8-1)
At the bottom of the left-hand column (immediately following Equation 8-1 and its defined terms), the first
full sentence is incorrect. It should read:
“This equation is suitable for most terrestrial daylighting applications.”
Equation 8-10 (top of the left-hand column) should be slightly revised so that the upper limit on the visible
spectrum is 780 nm (not 770 nm). The corrected equation is:
E
780
ESC = Km
380
Gλ Vλ dλ
(8-10)
This change should also be reflected in the list of terms defined immediately underneath Equation 8-10.
Therefore, the definition of “λ” becomes:
λ = wavelength in nm (for photopic vision at 380 to 780 nm).
The definitions of two solar parameters given one-third of the way down in the left-hand column should be
slightly revised to read as follows:
• Solar illumination constant: 127.5 klx (11,850 fc)
• Solar irradiation constant: 1353 W/m2 (125.7 W/ft.2)
Look in the middle of the right-hand column. In the fourth line of text following Equation (8-18), the word
“clearsky” appears. Replace this with the hyphenated “clear-sky” for better readability.
7
The last sentence in the first paragraph of the left-hand column is missing the word “not” and should read:
“The lumen method does not account for direct sunlight entering into the room cavity.”
The caption for Figure 8-29 at the top of the right-hand column incorrectly contains the word “for.” This caption should read:
“Figure 8-29. Transmittances of Glass and Plastic Materials”
There are several errors in one section of Figure 9-2 (evaluation of numerous configuration factors), which
starts on page 9-4 and concludes on page 9-6. The problems are in the second configuration factor on page 95. Here, in the equation for “C,” the denominator in the second arctan function should be: Y(H + 1) rather
than Y(H – 1). Also, above this equation, there are formulas for “L,” “X,” and “Y.” The formulas for “X” and
“Y” are in error. The correct formulas are:
X = (1 + H)2 + L2
Y = (1 – H)2 + L2
• Chapter 9, page 9-8 and page 9-9
Equation 9-16 (bottom, right-hand column of page 9-8) and Equation 9-17 (bottom, left-hand column of page 9I
9) should include the term } as follows:
A
1
1
E2= }
A2
1
I
∫
}
A1
I
E2= } }
A2 A1
∫
SS
I(u, c ) cos j
}} dA1, dA2
(9-16)
a1i a2j
}
I(u ij , c ij ) cos j ij D
(9-17)
D2
At the top of the page in Figure 9-6, the first equation in the section for Parallel rectangles A1 and A2 contains an
error. The beginning of this equation should be written as :
z2
}....
F1 → 2 = pA
1
(Note: the term “A1” should not be squared)
8
In the middle of the right-hand column, Equation 9-24 is wrong because a subscript error. The equation should read:
Mc = M0c + r c(Mwfc→w + Mf fc→w)
(9-24)
(Note: the corrected term “r c” stands for ceiling reflectance. It also appears immediately below Equations 9-24,
9-25, and 9-26 where it is typeset properly)
Equation 9-41 in the left-hand column is incomplete. All the terms on the right-hand side of the equation
should appear over a denominator, which is simply the number 5 (see corrected equation below):
L wω w + L f ω f + Lcωc +∑ Lsωs
Fv = }}}}
5
(9-41)
Near the top of the left-hand column, the equation shown for Unified Glare Rating (UGR) should be slightly
revised to read:
n
0.25
Li2ωi
UGR = 8 log10 } ^ }
2
Lb
i=1 Pi
1
2
Also, three of the defined terms immediately following this equation should be revised to include subscripts:
• “L” becomes “L i”
• “ω” becomes “ωi”
• “P” becomes “Pi”
Immediately below the list of defined terms, where the main text resumes, the second sentence should be
replaced with the following:
Values of UGR generally range from 10 to 30 where a high value indicates significant discomfort glare
and a low value indicates little discomfort glare. Electric lighting systems producing UGR values of less
than 10 are assumed to produce no discomfort
These changes will allow for a consistent presentation of the UGR equation, which also appears in the
Handbook on page 3-31.
In the middle of the left-hand column, Equation 9-55b is incorrect. The numerator in the right-hand term should
be changed so the equation reads as follows:
y=
cavity width
}}
cavity depth
(9-55b)
(Note: the word “width” should be used in the numerator instead of the word “length”)
9
In the left-hand column under Instructions and Notes: Tables of Coefficients of Utilization (Figure 9-28)
there are several numbered paragraphs. The last sentence in paragraph “2” should be deleted. (Due to a decision by Handbook editors, the list of average intensity values referred to in this sentence was not published.)
• Chapter 9, page 9-35 through page 9-44
In Figure 9-28, for each of 47 consecutive “Typical Luminaire” entries, there is a notation about Spacing
Criterion (SC) above each individual CU table (on the right-hand side). In most cases, this notation reads:
“SC (along, across, 45º) = X, Y, Z” (with three small decimal numbers appearing after the equal sign in
place of X, Y, Z ). This part of Figure 9-28 is incorrect. In all cases the SC notation should read: “SC = X”
(with a single decimal number appearing after the equal sign in place of X). If Spacing Factor is not applicable
to a particular luminaire type, the letters N/A should appear after the equal sign in place of X.
The following corrections for the Spacing Criterion (SC) notation should be made throughout Figure 9-28:
■
For Typical Luminaire 1, 19, 20, 39, 40, 41, 42, 43, 44, 46, and 47
The SC notation should read: “SC = N/A”
■
For Typical Luminaire 3, 4, and 5
The SC notation should read: “SC = 0.6”
■
For Typical Luminaire 6, 7, 9, 10, 12, and 15
■
For Typical Luminaire 16, 27, 34, 35, and 45
■
For Typical Luminaire 2, 11, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31,
32, 33, 36, 37, and 38
■
For Typical Luminaire 13
■
■
For Typical Luminaire 14 and 18
■
In Figure 9-28, for Typical Luminaire 2, the typical intensity distribution curve (shown on a semicircular grid) is in
error. Also, for this luminaire, the tabular data for EFF, %DN, %UP, and SC are wrong. The correct graphic and
data for Typical Luminaire 2 (including the original CU table, which is unchanged) are as follows:
10
Typical Intensity
Distribution
T
Typical
Luminaire
r cc →
rw →
RCR
↓
2
Po
ventilated
standard dome with inc. lamp
80
70
50
70
30
EFF 5 83.5%
70
50
50
30
% DN 5 100%
50
30
30
10
50
30
10
10
0
50
30
10
0
Lamp 5 150G40
SC = 1.3
% UP 5 0%
0
0.99
0.99
0.99
0.97
0.97
0.97
0.93
0.93
0.93
0.89
0.89
0.89
0.85
0.85
0.85
0.83
1
0.91
0.87
0.84
0.89
0.85
0.82
0.82
0.79
0.77
0.79
0.76
0.74
0.76
0.74
0.72
0.71
2
0.83
0.76
0.80
0.74
0.69
0.71
0.67
0.63
0.69
0.65
0.62
0.66
0.63
0.60
0.59
3
0.75
0.66
0.59
0.73
0.65
0.59
0.62
0.57
0.53
0.60
0.55
0.52
0.58
0.54
0.51
0.49
4
0.69
0.58
0.51
0.67
0.57
0.50
0.55
0.49
0.44
0.53
0.48
0.44
0.51
0.47
0.43
0.41
5
0.63
0.52
0.61
0.51
0.44
0.49
0.43
0.38
0.47
0.42
0.37
0.46
0.41
0.37
0.35
6
0.58
0.46
0.39
0.56
0.46
0.38
0.44
0.38
0.33
0.43
0.37
0.33
0.41
0.36
0.32
0.31
7
0.53
0.42
0.34
0.52
0.41
0.34
0.40
0.33
0.29
0.39
0.33
0.29
0.38
0.32
0.28
0.27
8
0.50
0.38
0.31
0.48
0.37
0.31
0.36
0.30
0.26
0.35
0.30
0.25
0.34
0.29
0.25
0.24
9
0.46
0.35
0.28
0.45
0.34
0.28
0.33
0.27
0.23
0.32
0.27
0.23
0.32
0.26
0.23
0.21
10
0.43
0.32
0.25
0.42
0.32
0.25
0.31
0.25
0.21
0.30
0.24
0.21
0.29
0.24
0.20
0.19
In Figure 9-28, for Typical Luminaire 3, the line drawing to the left of the CU table is incorrect. This sketch
(done in cross section) should not show the option of an “A” lamp. The CU table is clearly for a “PAR” flood
lamp. Furthermore, this sketch should show the flood lamp near the bottom of the luminaire. (See Figure 6-4 on
page 6-6 for an illustration of typical bulb shapes with their ANSI designations.)
In Figure 9-28, for Typical Luminaire 4, the percentage value given for EFF (above the CU table) is in error.
This data should read: EFF = 92.1%
In Figure 9-28, there is an error in the tabulated data for Typical Luminaire 4. In the row where RCR is 2 (for this
luminaire only), read across two columns to the right. The entry listed here, 0.08, is incorrect. It should be 0.98.
In Figure 9-28, for Typical Luminaire 6, the percentage value given for EFF (above the CU table) is in error.
This data should read: EFF = 69.2%
In Figure 9-28, for Typical Luminaire 10, the percentage values given for downlight and for uplight (above the
CU table) are in error.
This data should read: %DN = 100 %UP = 0
In Figure 9-28, for Typical Luminaire 27, the suggested lamp type (given above the CU table) is in error.
This data should read: Lamp = (2) F32T8/U/6. Also, the CU table for Typical Luminaire 27 contains many
small errors and should be replaced by the following:
11
Typical Intensity r cc →
T
Distribution
Typical Luminaire
27
2
2, -Lamp (U)
troffer
. louver, 16 cells
rw →
80
70
50
RCR
↓
EFF 5 50.8%
0
1
2
3
4
5
6
7
8
9
10
0.61
0.57
0.53
0.49
0.45
0.42
0.39
0.36
0.33
0.31
0.29
0.61
0.55
0.49
0.44
0.40
0.36
0.33
0.30
0.27
0.25
0.23
70
30
70
50
50
30
% DN 5 100%
0.61
0.59
0.59
0.51
0.48
0.59
0.54
0.48
0.43
0.47
0.41
0.32
0.41
0.35
0.32
0.26
0.23
0.21
0.19
0.35
0.33
0.31
0.29
0.29
0.27
0.25
0.23
0.25
0.23
0.21
0.19
0.46
0.40
50
30
30
10
30
10
0
50
30
10
0
0.52
0.52
0.44
0.39
0.52
0.47
0.42
0.38
0.41
0.36
1
5
0.40
0.35
0.33
0.30
0.28
7
0.27
0.25
0.23
0.21
0.24
0.22
0.20
0.19
0.22
0.20
0.18
0.17
0.21
0.19
0.17
0.16
Lamp 5 (2) F32T8/U/6
SC = 1.2
% UP 5 0%
0.56
0.52
0.45
0.47
0.42
0.38
0.34
0.31
0.29
0.26
0.24
50
10
0.56
0.50
0.45
0.39
0.56
0.49
0.43
0.37
0.54
0.45
0.41
0.54
0.49
0.43
0.38
0.31
0.29
0.33
0.31
0.25
0.23
0.21
0.19
0.23
0.20
0.18
0.17
0.28
0.26
0.24
0.22
0.25
0.22
0.20
0.19
0.54
0.48
0.42
0.37
0.32
0.28
0.25
0.22
0.20
0.18
0.17
This data should read: Lamp = (3) FT40W
This data should read: Lamp = (2) F32T8/U/6
In Figure 9-28, for Typical Luminaire 43, there are three incorrect numerical entries in the CU table. Make the
following changes:
■
Go to the first row entry in the leftmost column (where RCR is 0). Immediately to the right,
the number “3.87” should be replaced with “0.87”
■
Go to the second row entry in the leftmost column (where RCR is 1). Immediately to the right,
the number “3.80” should be replaced with “0.80”
■
Go to the fifth row entry in the leftmost column (where RCR is 4) and read across to the right
eight columns. Here the number “3.35” should be replaced with “0.35”
At the very bottom of the right-hand column, Equation 9-59 is incorrect. The numerator in the fractional righ
hand term should be changed as follows:
average initial wall exitance
= total bare-lamp lumens
wall exitance coefficient
x }}}
floor area
(9-59)
(Note: the word “wall” should be used in the numerator instead of the word “ceiling”)
12
In Figure 9-28, for Typical Luminaire 46, the percentage value given for downlight (above the CU table) is in
error.
This data should read: %DN = 0
In Figure 9-28, for Typical Luminaire 47, the CU table is totally in error and should be replaced by the following:
Typical Intensity r cc →
Distribution
Typical Luminaire
rw →
80
70
50
70
30
70
50
50
30
50
30
30
10
→
47
Fluorescent cove with specular
reflector
0
1
2
3
4
5
6
7
8
9
10
0.68
0.62
0.56
0.51
0.47
0.43
0.39
0.36
0.33
0.31
0.29
0.58
0.52
0.48
0.40
0.35
0.31
0.28
0.35
0.30
0.23
0.21
0.18
0.16
0.40
0.36
0.31
0.26
0.24
0.58
0.5
0.4
0.3
0.34
0.30
0.2
0.24
0.2
0.20
0.18
10
50
30
Lamp 5 (1) F32T8
SC = N/A
0.58
0.40
0.40
0.23
0.23
0.23
0.08
0.08
.41
0.30
0.28
0.18
0.17
0.16
0.06
0.0
0.30
0.26
0.24
0.21
0.21
0.18
0.14
0.12
0.12
0.11
0.11
0.09
0.04
0.04
0.04
0.04
0.20
0.17
0.14
0.10
0.08
0.07
0.03
0.0
0.16
0.14
0.14
0.12
0.11
0.10
0.08
0.07
0.06
0.06
0.05
0.05
0.03
0.02
0.02
0.02
% DN 5 0.3%
0.68
30
% UP 5 99.7%
RCR
EFF 5 71.6%
50
10
0.40
0.32
0.27
0.22
0.19
0.16
0.14
0.12
0.10
0.09
0.08
0
10
0
0
0.00
0.00
0.04
0.03
0.00
0.00
0.00
0.02
0.02
0.00
0.00
The “Notes” that appear immediately below the last section of Figure 9-28 should be keyed to the relevant luminaires in this figure. Several parenthetical text additions (shown below in bold type) are needed to accomplish
this. Revise the concluding “Notes” for Figure 9-28 as follows:
Notes: EFF = efficiency; SC = Spacing Criteria.
For 6” reflector with PAR-38, multiply by 0.98.
(applies to Typical Luminaire 4)
For A12 lens, 2 3 4's ratio of F40 to T8, 0.96, 0.94, and 0.89 for 2-, 3-, and 4-lamp versions.
(applies to Typical Luminaires 32, 34, 35)
For A12 lens, 2 3 4's ratio of 2- to 3-lamp effic. = 1.05; ratio of 4- to 3-lamp effic. = 0.98.
(applies to Typical Luminaires 32, 34, 35)
For parabolics, 2 lamp versions have 12 cells, 4 lamp versions have 32 cells.
(applies to Typical Luminaires 24, 25)
For 3” parabolic 2 3 4's ratio of 2- to 3-lamp effic. = 1.06; ratio of 4- to 3-lamp effic. = 0.96.
For 4” parabolic 2 3 4's ratio of 2- to 3-lamp effic. = 0.98; ratio of 4- to 3-lamp effic. = 0.90.
CUs do not consider shadowing of the lighting fixture or cove.
(applies to pendant and cove luminaries only)
* Different lamp types have been considered in determining the listed photometric report.
13
At the bottom of the left-hand column, Figure 9-30 has an error in the top line, which comes immediately under
the title. The top line should read:
Floor Cavity Reflectance (r fc = 20%)
(Note: the term “r cc” as originally published in the top line is incorrect)
In the right-hand column at the top of the page, Equation 9-74 for CU is broken into three sections. The third
section should have a plus sign (+) in front of it as shown below:
rFC C3 (C1 + C2)
+ 1 – }}
(1 - rFC)C0
1
2
DRCR
h down
1 - rFC
(9-74)
Figure 9-44 contains a typographical error. In the column labeled “15E” read up four numbers from the bottom.
The entry here should be the number “50” (not “S0”)
In the middle of the left-hand column, under “6. Solve the Equations” the expression given for “cosj ” is
incomplete. This equation should read:
yi
cosj i = }
Di
(Note: the subscript “i” is missing from the left-hand “cosj ” term as originally published. This equation is part
of Example 3, which begins on page 9-62)
14
In the middle of the left-hand column, under “6. Solve the Equations” there is an inconsistency in the second
paragraph. In order to have agreement with the distances presented in Figure 9-50 on page 9-65, the second sentence of this paragraph should begin by saying:
The distances involved are x 1 = 5.5 ft, x 2 = 9.5 ft,…. (not “5 ft”)
(Note: this is a portion of Example 4, which begins on page 9-64)
In the middle of the left-hand column, there is a subscript error in the expression for “E.”
This equation should read:
E = Mccc → p + Mwcw → p
(Note: an incorrect term “cp → w” appears to the right of “M w” in this expression as originally published. This
equation is part of Example 5, which begins on page 9-66)
Two additional and identical subscript errors appear further down the left-hand column on page 9-67. The first
occurs five lines below the expression for “E ” where the configuration factors are defined. Here the text should read:
cw → p = configuration from the walls to the point.
The second appears 13 lines below the expression for “E” where the equation given should read:
cw → p = 1.0 – cc → p
• Chapter 10, page 10-14 (Note: all pages in this chapter are especially marked with blue edge) In the lefthand column at the top of the page in Figure 10-10 (following the phrase CONTRAST How to calculate:),
the formulas presented are not consistent with Formula 3-6 for luminance contrast given in Chapter 3,
page 3-16. The formulas in Figure 10-10 should be changed to read as follows:
|L t – Lb|/Lb or |r t – rb|/rb
15
• Chapter 10, IESNA Lighting Design Guide ( Note: all pages in this chapter are specially marked with a blue edge)
In Section 1. INTERIOR, page Interior-2: Under Casino and Gaming, there are numerous errors in the “letter” assisgnments given for Illuminance (Horizontal) and Illuminance (Vertical) in the two columns labeled “
Category or Value (lux).” Corrected letter assignments for the Casino and Gaming section are shown below:
•
• Chapter 10, IESNA Lighting Design Guide (Note: all pages in this chapter are specially marked with a blue edge)
In Section I. INTERIOR, page Interior-4: Under Educational Facilities, the row labeled Shops (see Section
II, Industrial) should be BLANK all the way across the page. There should be no solid blue rectangle at the
intersection of this row and the column titled Notes on Illuminance – see end of section.
• Chapter 10, IESNA Lighting Design Guide (Note: all pages in this chapter are specially marked with a blue edge)
In Section I. INTERIOR, on page Interior-14: Under Reading, the row labeled White boards contains the letter “B” (indicating recommended illuminance category “B”) in the column Illuminance (vertical) Category
or Value (lux). However, the correct recommendation at this point in the Lighting Design Guide should be
category “D” as category “B” is too dim for the associated task/location.
16
At the bottom of the right-hand column, in Figure 17-35, six “Range of Sign Illuminance” categories are presented, each with a numerical range in candelas/m2 and candelas/ft2 plus a brief description citing “Potential
Areas of Application.” The first three of these descriptions should be revised. A portion of Figure 17-35 is
shown below with the needed text changes in boldface:
Candelas/
square meter
70 to 350
Candelas/
square foot Potential Areas of Application
7 to 35
“Low” brightness areas where signs are
relatively isolated or have dark surrounds
250 to 500
25 to 50
450 to 700
45 to 70
Lighted facades and fascia signs
Bright fascia signs as in shopping centers
In Figure 20-2 the Class of Play column for Curling is incorrect. Here, the final class listing should read “III
& IV” (not “II & IV”).
In Figure 20-2 some of the information given for Swimming (Water Sports) does not agree with a tabulation of
the same data given in Table 5 of RP-6-01, “Recommended Practice for Sports and Recreational Area
Lighting.” Therefore, Figure 20-2 should be revised so that the four values identified in the Lighted Area column as “Luminances of the Pool Surface (Candelas per Square Meter)” are as follows:
Class of Play
I
II
III
IV
376
269
161
161
Note: you must refer to Table 5 as it is presented in the hard copy Errata insert for RP-6-01. Do not use the
original Table 5 bound into RP-6-01 because it is incorrect.
Also in Figure 20-2, page 20-5, in the Lighted Area column (just below the statement “Luminances of the Pool
Surface (Candelas per Square Meter),” the phrase “Illuminances on Pool Deck” is incorrect. It should say:
“Illuminances on Pool”
At the top of the page, in that portion of Figure 20-2 pertaining to Motor Racing, there is an error in the horizontal lux and footcandle levels given for Track (these levels appear in the “Lighted Area” column).
In Class of Play III for Track, Figure 20-2 gives Horizontal Lux and Footcandle values of 800 and 80
respectively.
However, the Horizontal Lux and Footcandle values for Class of Play III for Track should be 200 and 20
respectively. (This change will put the Handbook into agreement with Table 7 in RP-6-01.)
17
In Figure 20-2 under Soccer the illuminance values for Class of Play II, III, and IV should be the same as
those given under Football for Class of Play II, III, and IV (see page 20-6 for Football). The corrected
Soccer Illuminance values that replace those given in Figure 20-2 for Soccer are listed below:
Class of
Horizontal
Play
Lx
Fc
_____________________________
II
III
IV
500
300
200
50
30
20
On the top half of the page, Figure 20-10 includes a small table with three columns. The center column has the
heading Beam spread degree range. This heading should be changed to read Field angle degree range for
agreement with the figure’s caption.
Figure 22-26 is incorrect because it shows test points (observer points - black dots) as beginning ON the reference line. The correct presentation, with the test points beginning OFF the reference line, is given below:
18
In Equation 25-8c, at the very bottom of the right-hand column, the term “(1 - r)” in the denominator should
be replaced by “(i – r).” The correct equation is given below:
(1 + r) [(1 + i)y – (1 + r)y]
P = A × }}}
(i – r) (1 + i)y
(25-8c)
The entire right-hand column on this page, with some text continuing over onto the left-hand column of page
25-4, contains discussions of four equations (25-4, 25-5, 25-7, and 25-7). These equations are correct, however
the discussion/definitions that accompany each equation are somewhat inconsistent and/or incomplete.
Therefore, replace this section with the following text:
The first step in the LCCBA process is to complete the worksheet in Figure 25-2 for each system under consideration. The notes give estimates and default values to be used only as a last resort for values that are not
available by any other means. Since initial costs and annual power and maintenance costs occur at different
times, they cannot be directly compared. The second step, then, is to put all terms into their equivalent present
worth or annual cost values to allow comparison. The following equations are used to take into consideration
the time value of money.
The single present worth of some single future monetary amount is calculated from:
1
P = F 3 }y
( 1+ i)
(25-4)
where:
P = present worth, or the equivalent value at present (dollars)
F = future worth, or the amount in the future (dollars)
y = number of years
i = opportunity or interest rate as a decimal fraction (5% equals 0.05)
1 / (1 + i)y is called the single present worth factor
This equation finds a value today, P, which is equivalent to a value in the future, F. In other words, one is
equally willing to pay P dollars today or pay F dollars at a time y years in the future.
The present worth of a series of future annual payments is determined by the following equation:
(1 + i)y –1
P = A 3 }y
i(1 + i)
(25-5)
where:
P = present worth of all annual payments (dollars)
A = amount of each annual payment (dollars)
y = number of years
i = opportunity or interest rate as a decimal fraction
[(1 + i)y – 1] / [i(1 + i)y] is called the uniform present worth factor
19
This equation converts a stream of equal annual amounts into a single present value. There is no cost difference between making annual payments of A dollars for the next y years and paying P dollars today.
In many cases it is helpful to extend present worth values over the life of a system. If present worth (P) is
known, then the equivalent annual payment amount (A) can be found from:
i(1 + i)y
A=P3 }
(1 + i)y –1
(25-6)
where:
P = present worth, or amount at present (dollars)
y = number of years
[i(1 + i)y] / [(1 + i)y – 1] is called the uniform capital recovery factor
Note that reciprocal of the uniform present worth factor is the uniform capital recovery factor.
A stream of equal annual payment amounts (A) equivalent to one specified amount paid at a specific time in
the future (F) can be found from:
i
A = F 3 }}
(1 + i)y –1
(25-7)
where:
F = future worth, or amount in the future (dollars)
y = number of years
i / [(1 + i)y –1] is called the uniform sinking fund factor
There is no cost difference between the offer of F dollars y years from now and the offer of A dollars each
year for y years.
Section “C” at the bottom of Figure 25-2 should be revised to more accurately track the development of the
first four LCCBA equations in the Chapter 25 text. Also, the footnote underneath Figure 25-2 should be deleted. The revised section “C” is as follows:
C. Comparisons
1. Present worth: A10 + Pf (A13) + Pa(B12 + B13)
2. Annual cost: Ai (A10) + Af (A13) + B12 + B13
20
where:
Pf = 1 / (1 + i ) y (single present worth factor)
Pa = [(1 + i ) y – 1] / [i(1 + i )y ] (uniform present worth factor)
Ai = [i(1 + i )y ] / [(1 + i )y –1] (uniform capital recovery factor)
Af = i / [(1 + i ) y – 1] (uniform sinking fund factor)
i = interest rate in decimal form
y = system lifetime in years
In Equation 25-8c, at the very bottom of the right-hand column, the term “(1 – r)” in the denominator should
be replaced by “(i – r).” The correct equation is given below:
P=A3
(1 + r) [(1 + i) y – (1 + r)y ]
}}}
(i – r)(1 + i)y
(25-8c)
Figure 26-11 at the top of the page is incorrect because several “less than or equal to” signs and a “greater
than” sign are missing from numerical entries in the “Nominal Lamp Wattage” column. A revised Figure 26-11
is shown below:
21
• Glossary of Lighting Terminology, page G-18 (immediately following Chapter 29)
The definition for Kelvin is incorrect. The last part of the second sentence should say “…but the Kelvin scale
has its zero at –273°C.” Note that the minus sign is missing in this part of the definition as originally printed.
• Glossary of Lighting Terminology, page G-32 (immediately following Chapter 29)
In the left-hand column, the definition for spectral reflectance of a surface or medium contains the equation
ω(l)= Φrl/Φil, which is incorrect. This equation should be revised so the beginning of the definition reads as follows:
“spectral reflectance of a surface or medium, ρ(l)= Φrl/Φil . . . .”
22

Ninth Edition Handbook Eratta

Transcription

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