Press Alt + R to read the document text or Alt + P to download or print.
This document contains no pages.
HomeMy WebLinkAboutCALCULATIONSf Yi+
Pit'DITION RE' aED p
Y k
■
St Lg
Pou
JGener I o I S stemse those methods of a licat'on where Sase Sheet is mee apical;. ache or self adhered to
the decking. The Cap Sheet shall be attached by of As hal , Cold Process, Heat Applied, Self Adhered or Mechanically
Attached. Minimum thickness shall be 40 mil SBS, APP or approved equal.
ase lie Base heet shall be self adhered or
mec aally attaeSed o the de - J an t n tags
round cap nails or other ap roved .fasteners spaced i M
a ee with t • e�r'riilorlayment-astenin gab a IPage 13
-ATp-en-ai-RAT.-auend the Base Sheet a minimum of 4" up ver-
tical surfaces. Base Sheet side laps shall be a minimum of 6"
and head laps shall be a minimum of 2 . Install the Base Sheet
to ensure all valleys are woven past the centerline and
through the succeeding course of underlayment on the inter-
secting deck to prevent a water lap. Ensure that each course
of underlayment is overlapped by the succeeding course at
the intersecting roof plane. Proceed up the roof to the ridge.
Overlap hip and ridges a minimum of 6".
Drip Edge - The Eave and Gable Drip.Edge metal shall be
installed over the Base Sheet. The metal shall be coated with
compatible primer prior to the Cap Sheet being installed.
The metal shall be fastened 6" on center with approved fas-
teners. All joints shall be lapped a minimum of 3 and sealed
with compatible flashing cement, beads of sealant or solid
coating at the lap: Continue from eave up the rake/gable in
the same manner, ensuring water shedding capabilities of all
metal laps.
■ Since Raised Fascia and Starter Strips create the same type of
1 ' water dam situation, they both require an Anti-Ponding
System to allow water to flow off the roof at the eave. See
■ Drawing FHW-1 1.
s
Cap Sheet - The two-ply underlayment flashing options
�- determines the Cap Sheet Installation timing. Choose one of
the following and proceed accordingly.
0 Under the Cap Sheet. See Metal Installation. See
■ Drawing FHW-02B
• On Top of the Cap Sheet. Proceed to the next sec-
tion. See Drawing FHW 02C
Can Sheet Installation - Side laps shall be a minimum of 6",
plane. Over lap all hip and ridges by 6". On Cap Sheet, cut any
fishmouths and seal with flashing cement and membrane
where applicable. When using Pre -formed Metals without
edge returns, the Cap Sheet should terminate I" from the
water diverter to ensure adhesion to the primed metal.
Cap Sheet Attachment Method - Choose one of the fol-
lowing.
• }-lot As hp alt4(A'stall the Cap Sheet with an application
rate of 25 pounds per square ± 15% mopping of
asphalt. The Cap Sheet may come in contact with the
Base Sheet, allowing felt to touch felt.
• Self Adhered -Over installed Base Sheet, apply one
layer of Self Adhered Underlayment in compliance with
the Self Adhered underlayment manufacturer's recom-
mendation.
• Cold Process - Install Cap Sheet according to underlay-
ment/adhesive manufacturer's recommendations. For
Cold Process Systems in windy conditions, it may be
necessary to spot nail Cap Sheet laps at a maximum of
3' on center.
• Heat Applied -'Install Cap Sheet per manufacturer's
instructions.
• Mechanical Attachment - Battens may be used with
this application method. The Cap Sheet shall be back
nailed to the Base Sheet with nails. and tin tags, round
cap nails or, other approved fasteners to secure the Cap
Sheet •until the battens can be installed. Windy condi-
tions may require additional securement of the Cap
Sheet at the overlaps.
Valley Intersection - When installing the Cap Sheet at the
valley intersection, choose one of the following installation
methods. Be sure that the underlayment does not create a
gap due to memory of the material.
head laps shall be a minimum of 3" and back nailed 12" on
center with approved fasteners. When using battens, back
nailing the Cap Sheet is optional. Install Cap Sheet to ensure
all valleys are woven past the centerline and through the suc-
ceeding course of Cap Sheet on the intersecting deck to pre-
vent a water lap. Ensure that each course of Cap Sheet is
overlapped by the succeeding course at the intersecting roof
Full Weave -Install underlayment to ensure all valleys
are woven past the centerline and through the succeed-
ing course of underlayment on the intersecting deck to
prevent a water lap. Ensure that each course of under-
layment is overlapped by the succeeding course at the
intersecting roof plane. Proceed up the roof to the
COPYRIGHT © FRSA/TILE ROOFING INSTITUTE April 2012
FRSA/TRI
TABLE I
Allowable Uplift Resistance for
Anchor Sheet Attachment (DSf)
71,
Wll
'IT
;;Oil A N""Ay
'M d AJF pu --p
ig
W
Backnail
0""
'Ell
F i
ld Lap
Cap Sheet
15/32Inch-
19/32 inch 15)32 Inch 19/32 inch
15)32 Inch 19/32 inch
Smooth
Deformed 4
Smooth
Deformed 4
Smooth
Deformed 4
Smooth
-Deformed
Smooth
Deformed 4
Smooth
Deformed 4
6
12
41.6
47.4
52J
60.0
49.6
56.5
62.9
71.5
58.6
66.6
741
84.3
6
12
43.1
49.1
54.6
62.1
51.8
58.9
65.6
74.6
61.4
69.9
77.8
- 88.5
6
12
44.9
51.0
56.8
64.6
54.4
61.9
68.9
783
64.9
73.9
81.2
93.5
6-
7-1-2
47.0
53.5
59.5
67J
57.6
65.5
72.9
82.9
69.2
78J
87.6.
99.6-
6
12
49.6
56.5
62.9
713
61.5
70.0
78.0
88.6
74.4.
84.7
94.3
107.2
6
12
53.0
60.3
67.2
76.4
66.6
75.8
84A
96.0
813
92.4
102.9
117.0
6
12
57.6
65.5
72.9
82.9-
-73.5
83.6
93.0
105.8
00.3
102.8
114A
130.1
dff
12
63.9
1111111
81.0
92.0
83.0
14.4
165.1
119.5
103.0
117.2
130.5
148.4
T
6
F735
.
..
836
930- 1
105.8
973
110.7
123.2
140.1
122.1
138.9
154.6
USA
'12
89.3
101.6
113.2 1
128.6
121.1
1371
OTI53.4
-
.174.4
1'53.9
.175.1 1
194.9
221.6
, and one row at the to ed a of the ca et"
T--TFree rows staggered -,nere ff, one -row at the lap, and one row at the top edge of the cap sheet
3 - Three rows staggered in the field, one row at -the lap, and one row at the top edge of the cap sheet
OWDeformed shank inclusive o� �Rrscrew-s �aflflyal&
PA
1*-
7
I JAr P h ty y h Ft
F RSA./TRI
TABLE 2A
Required Aerodynamic Uplift Moment For Field Tile, Ma (ft-lbf)
For Roof Pitches 6: l2 'and La -cc
Exposure B
Basic Wind Speed in MPH
MRH
He,t,9, m 1
13.3
�/��(
`.�i2a'Vr a",r5..(,„_
15.6
)•
q ! J,4fi*
i?F �t A,
k4a
30.0
.
33.4
0-15
18.1
20.8
23.7
26.8
20
13.3
15.6
18.1
20.8
23.7
26.8
30.0
33.4
25
13.3
15.6
18.1
20.8
23.7
26.8
30.0
33.4
34
13.3
15.6
' 18.1
20.8
23.
26.8
30.0
33.4
35
13.9
16.3
18.9
21.7
24.7
27.9
31.3
34.9
40
14.5
17.0
19.7
22.6
25.7
29.1
32.6
36.3
45
14.9
17.4
20.2
23.2
26.4
29.8
33.4
37.2
50
I SA
1.8.1
21.0
24.1
27.4
31.0 .
34.7
38.7
55
15.8
18.6
21.5
24.7
28.1
31.7
35.6
39.6
60
16.2 ,
19.0
22.0 .
25.3
28.8
32.5
.36.4
40.6
Exposure C
Basic Wind Speed in MPH
MRH?0�,€�0a
o�2i q,( > S y vy X•_iTi t +y` 7^ J kA -M"Q. yd' v7} Arfn«NS
�fl YM'r a41I�q
16.2 19.0 22:0 25.3 28.8 32.5 36.4 40.6
0-15
20
17.1 20.1 23.3 26.8 30.5 34.4 38.6 ' 43.0
25
.17.9 21.0 24.4 28.0 31.8 35.9. 40.3 44.9
30
18.7
21.9
25.4
29.2
33.2
37.5
42.0
46.8
35
19.2
22.6
26.2
30.1
' 34.2
38.6
43.3
48.2
40
19.8
212
27.0
30.9
35.2
39.8
44.6
49.7
45
20.2
23.7
27.5
31.5
35.9
403
45.4
'50.6
50
20.8
24.4
28.3
32.4.
36.9
41.7
46.7
52.0
55
21.1
24.8
28.8
33.0
37.6.
42.4
47.6
53.0
60
21.5
25.3
-29.3
33.6
38.3 1
43.2
48.4 T
54.6
Exposure D
Basic Wind Speed in MPH
MRH
a•c ?�
! i'1��� C a Pa I�r�u73k"` '% (/■�x'' -� .� pryE� �'"� r `+�'v d=sm �+■A�■rtk .st
Al.,id�;
0-15
19.6 23.0 26.7 30.7 34.9 39.4 44. I 49.2
20
20.6 24.1 28.0 32.1 36.6 41.3 46.2 51.6
25
21.3 25.0. 29.0 33.3 37.9 42.8 48.0 53.5
30
22.1
25.9
30.1
34.5 •
39.3
44.3
49.7
55.4
35
22.7
26.6
30.8
35.4
40.3
45.5
51.0
' 56.8
40
23.2
27.3
31.6
36.3
41 ..3
46.6
52.2
58.3
45
23.8
27.9
32.4
37.2
42.3
47.8
53.5
59.7
50
24.2
28.4
32.9
37.8
43.0
48.5
54.4
60.6
55 1
24.6 1
28.8
33.4
38.4
43.7
49.3
55.2
61.6
60 1
24.9 1215k
1 1
39.0
.44.4 1
50.1
56.1
62.5
• •••� _jWww .a I= Nn� .wa,c -, v for rvom1nal a - second gust at 33 ft above ground.
MRH= Mean Roof Height in Feet
For Roof Pitches 6: l2 and Less Equates to Roof Slopes 7 deg s (0s 27 deg for Zone 3
For Tile Calculations
COPYRIGHT © FRSAmLE ROOFING INSTITUTE
_ April 2012