HomeMy WebLinkAbout0267.98.50to
rn
N
0
to
I
Y
9
a
S.
Roof Cement
1. Material may be applied either by trowel or by hand.
2. Material may not be diluted or adulterated.
plies and surfacing sheet, into the drain, under the clamping ring.
4. Set the drain ring in roof cement and securely tighten over
the drain flashing components.
5. After complete installation of the roofing system, inspect
asphalt, include type, flash point, and EVT on bill of lading
accessible at the job site. Store asphalt delivered in bulk
containers at a temperature at least 25'F below the Finished Blowing
Temperature.
1. Additional modified bitumen ply sheet.
2. Modified bitumen surf acing /flashing sheet.
B. Wall Covering:
1. Additional base sheet.
07510.33
A.
C.
07510.34
A.
3. Maintain material at the working temperatures recommended by the
Manufacturer.
APPLICATION OF CANT STRIP AND BASE SHEET:
Install four inch by four inch cant strips at the juncture of all
vertical surfaces and roof. Where 4" cant strips will not fit, use the
largest practical size. Felt must be adequately supported at
transition between cant strips of different sizes to protect from
tearing. Nail cant strips to wood noilers and /or nailable vertical
surfaces using a maximum nail spacing of 12" o.c.
B. Apply a layer of rosin -sized building paper dry under the nailed
base sheet. Place this sheet over the prepared deck surface and nail
to hold in place until securement of base sheet. Lap all sides and
ends at least 2 ".
Base Sheet Application:
1. Lay the base sheet smooth and free of wrinkles, buckles or
fishmouths.
a. Lap so water flows over or parallel to, but never
against the laps.
2. Lap 2" on sides and 6" on ends.
3. Extend to the top of the cant strip at curbs, walls, and
similar locations.
4. Nail on 9" centers through the laps and 18" centers along
lines 12" distant from each edge.
APPLICATION OF PLY SHEETS:
Shingle -in ply sheets free of buckles or fishmouths.
roof drains and test to assure that no clogging of the drainage
system is present. Provide roof drain leader in such condition
that the full diameter of the drain leader is clear.
E. Flanged Sleeves and Accessories:
1. Set flanges into roof cement over the installed roof plies
and fasten securely to the underlying deck (fastening is not
required for lead flanges).
2. Prime all flanges, including pipe flashing sleeves, flanged
units, scuppers, and similar items on both sides and flash on the
roof with at least two (2) plies of ply sheet embedded into
asphalt. Extend the first ply a minimum of four inches beyond the
flange onto the roof. Extend the second ply a minimum of four
inches further onto the roof than the first ply.
3. Mop over the top stripping ply to ensure embeddment. Seal
cut edges of surfacing sheet with roof cement
F. Protection Pads
1. Install walkway protection pods at heavy traffic areas such
as around serviceable roof -top equipment and in front of roof
access areas.
2. Space protection pads approximately one to two inches apart
to allow for water flow.
3. Set walk pad into a five spot application of roof cement over
the final surfacing.
4. Place protection material to underlie pipe support blocking,
extending at least two inches beyond the blocking on all sides and
spot - odhere to the surfacing sheet.
B.
C.
D.
Do not apply wet materials nor proceed with roofing application during
wet weather or when moisture is on roof deck.
Deliver materials to jobsite on pallets in original, unopened
packaging with legible labels. Insure that package labels are
imprinted with product name, production date, product code and testing
agency.
Store materials in dry, protected areas in upright position. When
stored outdoors, store on pallets above ground and cover top and all
sides with suitable protective sheet or tarpaulin. Protect modified
bitumen materials from extreme heat or sunlight. Do not double -stack
pal -lets on the job site. Shrink wrap packaging is not intended for
long -term jobsite storage. Remove upon arrival at jobsite and replace
with a watertight breathable covering.
E. Select and handle materials and equipment in such a way as to avoid
damage to materials, existing construction, or applied roofing.
F. Do not load or permit any part of structure to be loaded with a
weight that will endanger its safety or cause damage. Confine
equipment, storage of materials and debris and the operations and
movements of workmen within any limits as indicated or as directed by
the Owner or his Representative.
G. Take every precaution to prevent interior leakage, materials
falling into the interior, or other such occurrences. Accomplish
installation of materials in such a manner that bitumen drippage does
not occur.
H. Mark any wet, damaged or defective material and remove from the job
site that same day. Promptly replace this material at no cost to the
Owner.
07520.3
07520.31
A.
B.
2. Modified bitumen flashing sheet.
C. Flange Stripping:
1. Additional modified bitumen ply sheet.
D. Drain Flashing:
1. 4 Ib. sheet lead.
2. Additional modified bitumen ply sheet.
E. Waterways
1. Additional base sheet set in asphalt.
EXECUTION
PREPARATION:
Deck Preparation
1. Provide smooth, clean, dry deck, free of debris, and sufficiently
rigid to support the roofers and their mechanical equipment without
deflection that will strain or rupture any of the roofing
components.
2. Make any significant depressions, holes, deformations, and similar
faults smooth prior to new roofing application.
3. Clean all surfaces of debris and of any moisture before
proceeding with application of roofing material.
4. Refer to Manufacturers General Requirements for other
appropriate substrate requirements.
Deck Inspection
1. Contractor is responsible for insuring that the roof surface is
clean, firm, smooth, dry, properly secured against movement, and
acceptable to the Manufacturer and to himself, prior to application
r„
t�
t� 2
W U
Z
CS x Z
W U
�►
B.
Ply sheets may be applied by a mechanical felt layer or rolled into a
07510.37 CLEAN UP:
of roofing materials.
C.
D.
E.
F.
hand mopping of asphalt.
Apply ply sheets so that the flow of water is over or parallel to, but
never against, the lop.
End laps: Minimum of 4" and a minimum of 12" apart.
Embed the full 36 width of each ply in hot asphalt applied at the
nominal rate of 25 lbs. per 100 square feet.
"Brooming In" is required under normal conditions for both felt layer
and hand mopped applications.
A.
Remove bituminous or other markings from finished surfaces. Keep the
roof and premises clean and free from accumulations of waste materials
and rubbish at all times. Remove all debris, scrap, and rubbish from
the work area daily. Promptly remove surplus materials and all
equipment from the site upon completion of the work. Prior to final
acceptance, restore all areas affected by this work to their original
state of cleanliness and repair all damage done to the premises, by
workmen and equipment.
07520.17
WARRANTY:
A. For a five (5) year period from the date of completion and Owner
acceptance, Contractor agrees to inspect and make necessary repairs to
defects or leaks in the roof and flashings. Emergency leaks will be
attended to within twenty -four (24) hours from receipt of notice from
the Owner. As soon as weather permits, Contractor will restore
affected areas to standards of this contract and repair any damages
from these leaks without cost to the Owner, except for leaks caused by
07520.32
2. Commencement of roof application over any section denotes
acceptability by Contractor of any section's readiness to receive
roofing and he will be responsible for any corrective work which
may be occasioned by his having started over an unsatisfactory
surface.
GENERAL APPLICATION REQUIREMENTS:
A. Do not apply roofing unless correct asphalt application
G.
H.
I.
J.
K.
When "Rolling In" by hand, keep the mopping asphalt within 6' of the
roll.
Keep mop full and flow asphalt on the roof. Do not scrub with mop.
Do not "glaze in" ply sheet during the interim between surfacing.
Valleys and Waterways: Provide an extra layer of ply sheet at least
36" wide and extend at least 8" up the inclines out of the valley, and
lay prior to the application of roofing plies.
Cut and repair fishmouths, wrinkles, tears, buckles or other damage in
any ply on a ply for ply basis. Install additional plies set into hot
bitumen over the cuts. Mop the full width under each layer. No dry
laps are permitted. Feather felts 2" over preceding layers.
END
DIVISION 7 - THERMAL AND MOISTURE PROTECTION
SECTION 07520 - MODIFIED BITUMEN ROOFING SYSTEM
07520.1 GENERAL
07520.11 RELATED DOCUMENTS:
A. Drawings, Specifications, Division 1 and Contract
07520.2
abuse to roof by others or by abnormal weather conditions such as
lightning, severe hail, or other unusual climatic phenomena. This
Warranty must be submitted to the Owner, in writing, before final
payment is released for the project.
B. If, 24 hours after notification of roof leakage Contractor has not
responded, Owner has the right, without invalidating his Warranties
and at the expense of the Contractor, to make any emergency temporary
repairs that ore required in order to protect the building and its
contents from damage due to roof leakage.
PRODUCTS
C.
D.
temperatures can be maintained to obtain good embeddment and adhesion.
Do not conduct operations when water in any form is present on deck,
such as rain, dew, ice, frost, or snow. Limit water to containers for
human consumption.
B. Take precautions to keep materials clean, dry and free of damage.
Do not start application of more base sheet each day than can be
covered within the some day.
At the end of the day, edge -seal the finished portion of the roofing
system completed that day with fabric or felt set into hot bitumen or
plastic cement. Remove edge seals prior to the start of the next
day's work.
=
J
J
m
07510.35
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
K.
07510.36
A.
L. Extend all ply sheets two inches above the top of the cant strip,
solidly adhered without bridging or buckling.
M. Light priming may be required if an surface oxidation has
9 P 9 Y q Y
occurred.
APPLICATION OF SURFACING SHEET:
Roof Surface: Clean, free of dust, dirt or moisture when surfacing
sheet is applied.
Apply surfacing sheet free of buckles, wrinkles, blisters, fishmouths
or voids of any type between the sheet and the mopping asphalt.
Apply surfacing sheet over and parallel to the underlying roofing and
lapped so that the flow of water is over or parallel to, but never
against, the laps.
Lap surfacing sheet with 2" side laps and 6" end laps.
Break end laps not less than 3' apart.
Embed surfacing sheet in hot asphalt applied at a nominal rate of 25
lbs. per 100 square feet.
Cut surfacing sheet into 12' to 18' lengths.
"Flop" surfacing sheet into place. Place tension on the ends of the
surfacing sheet lengths as they are flopped into place to ensure that
the sheet lays flat in the asphalt.
"Brooming in" may be necessary under certain conditions to ensure bond
between asphalt and sheet.
For clean, finished surface, embed loose granules into overrun of hot
asphalt at side and end laps while still hot.
Weather conditions, such as temperature, wind, sun, and similar
conditions must be given consideration when the temperatures get below
50'F., as cracking, wrinkles, non - adhesion and fishmouths are more
likely to occur. The pre- cutting and stacking of surfacing sheet will
reduce application problems in these instances.
FLASHING INSTALLATION:
General flashing specifications:
1. Do not apply flashing until the roof membrane (excluding surfacing)
has been laid. Provide temporary seal at ply terminations until
installation of flashing.
2. Prime all sheet metal that will come in contact with bituminous
materials with an asphaltic primer and allow to dry before applying
07520.12
07520.13
D.
E.
F.
G.
H.
DESCRIPTION:
A. Work Included:
1. Mineral Surfaced Modified Bitumen Roofing
9
2. Base and Wall Flashing
3. Roofing accessories and incidentals
QUALITY ASSURANCE:
A. Possess /maintain, on site, a copy of specifications, MSDS sheets,
related documents, all pertinent drawings and any addendum infor
motion.
B. Project quality control is the Contractor's responsibility and
obligation. Nothing contained herein or stated implies any obligation
by the Owner or his Representative(s) to Contractor by performing such
field observation, nor does field observation relieve Contractor of
any responsibility under the terms of the contract.
C. Maintain a full -time supervisor /foremon on the job site during
times that roofing work is in progress having a minimum of five (5)
years experience in roofing work similar in nature and scope to speci
fled roofing. Have the same person continue on the project through
final acceptance, unless the persons performance on the project is
not acceptably adequate or impedes project productivity.
Have a copy of these specifications on the job at all times during
application and refer to some for proper application methods.
Comply with local, state and federal regulations, safety standards and
codes. Use the strictest document when a conflict arises.
Whenever specification items found herein are less stringent than
Manufacturers' requirements, follow Manufacturers' requirements.
Be responsible for meeting fire regulations. Locate a certified fire
extinguisher of adequate size at the asphalt kettle and elsewhere as
required.
Special precautions are necessary when installing the roof system at
temperatures below 45'17 to insure satisfactory application and
performance.
I. Maintain internal quality control through instruction, supervisory
inspection, and knowledgeable personnel for a proper installation
without taking test cuts. This, however, does not limit the Owner's
right to request cuts be taken by the Contractor and repaired as
indicated by the Manufacturer and approved by the Owner.
07520.21
07520.22
A.
B.
D.
F.
G.
ACCEPTABLE SYSTEMS:
A. Nord Bitumi Duo -PI FRS stem
Y Y
MATERIALS:
Roofing System
1. Provide modified bitumen roofing system comprised of the
following major components and having a U.L. Class "A rating.
Base Sheet
1. Material: A heavyweight glass mat, bound together with a resinous
binder and completely coated with a weathering grade asphalt.
2. Manufacturer and Brand: Nord Bitumi Nord Base Sheet
3. Manufacturing Standards: SS -R -6208, Type 11; ASTM D4601; UL G -2.
4. Nominal Weight: 25 lbs. per 100 sq. ft.
C. Ply Sheet
1. Material: A heavyweight glass mat bound together with a resinous
binder and heavily coated with SBS modified asphalt.
2. Manufacturer and Brand: Nord Bitumi Duo -Ply FR Base
3. Manufacturing Standard: CGSB Standard 37- GP -56M.
4. Nominal Weight: 70 lbs. per 100 sq. ft.
Surf acing /Flashing Sheet
1. Material: A heavy glass mat bonded together with a resinous binder
and heavily coated with SBS modified asphalt. Surfaced with
opaque, inert, non - combustible colored granules.
2. Manufacturer and Brand: Nord Bitumi Duo -Ply FR Cap
3. Manufacturing Standard: CGSB Standard 37 -GP -56M.
4. Nominal Weight: 95 lbs. per 100 sq. ft.
5. Color: White
E. Bitumen
1. Material: Air blown roofing grade asphalt.
2. Manufacturer and Brand: Acceptable to Primary Manufacturer.
3. Manufacturing Standard: ASTM D -312 Type 111.
Roof Cement
1. Material: An asphalt cut -back flashing cement compound fortified
with fibers, fillers and solvents, non - asbestos.
2. Manufacturing Standards: Federal Spec SS- C -153B, Type I- ASTM D
4586 Type 111.
Fasteners for Base Sheet to Wood Deck
E.
F.
Start roofing work in dry weather only and without threat of immediate
inclement weather. Keep the roofed area of the building watertight
each day as the work progresses.
Y P 9
Use only materials and procedures that are proper and suitable for the
slopes and for the underlying materials to which they are attached.
G. To avoid displacement of asphalt and interply voids, ensure that no
heavy objects are placed on the membrane. Use all means necessary to
protect the membrane before, during, and after installation. In the
event of damage or asphalt displacement, immediately make all repairs
and /or replacements necessary to the satisfaction of the Owner at no
additional cost. Work all felts from the up slope side. Do not walk
on /over felts freshly laid in hot bitumen.
H. Provide approved and operable fire extinguishers on hand at all
times on the roof and near the kettle or tanker. During all hot-
application work, including kettle loading, have all roofers wear
protective clothing (i.e. long- sleeved shirts, gloves face shield for
kettle operator). During any torch work, provide an additional fire
extinguisher for each torch. Follow all additional requirements of
OSHA Safety Regulations.
1. All torch work shall stop 1 1/2 hours prior to crews leaving the
site. The roof contractor shall inspect all torch details, each
day, after all work on the roof has ceosed.
I. Run interply mappings of hot asphalt (at the E.V.T.) continuously
and apply at the specified rote. Use application methods which ensure
that all plies are completely embedded in asphalt. Broom in all plies
immediately after being laid.
J. Cover all attached base sheet with the completed roof membrane
system (except surfacing) at the end of each days work. Make all roof
terminations and openings waterproof at the end of each day's work.
K. Install proper width starter sheets to insure minimum specified
coverage throughout. Stagger starter sheets as needed to offset joints
between base, ply and surfacing sheets.
L Do not use any wet or damaged materials.
M. Equipment must be clean and in sufficiently good operating
condition to perform specified work.
N. Do not use felt layer for application of roofing products.
0. Asphalt
1. Apply asphalt at the high end of the EVT range at the point of
� "
U _
Q
I--
(n
Z
0
U
-
LL
_
U
W
n
(/�
O
Q
O
rr
Q
W z
z
_
-
r)
W
0
Z
I
Q
W
Ify
Q
T U
C%
r---
REMIX
B.
bitumen.
Base Flashing:
1. Embed two additional ply sheets into a solid mopping of asphalt
over junctures, extending to the top of the curb or eight to ten
inches up the wall. Extend the first ply at least two inches
beyond the cant strip, onto the roof with the second ply extending
J.
The responsibility for proper installation of all components of the
roofing system lies with the Contractor. Inform the Owner of any
conditions detrimental to the quality of construction or long -term
performance of the roofing system and do not proceed with the work
until the conditions are corrected.
1. Type: Annular or spiral thread ring shank, square head, one
piece nails.
2. Manufacturer: Simplex, Independent Nail Co., W.H.Maze Co.,
or approved equal.
3. Size: 12 gauge minimum with minimum one inch square head, of
sufficient length to penetrate at least 3/4" into or through wood
application. Discontinue operations if asphalt temperatures at
point of application cannot be maintained at the high end of the
EVT range.
2. Equip ospholt heating equipment with an accurate thermostat and
thermometer.
3. Do not overheat asphalt. Kettle temperatures generally may not
at least two inches beyond the first. Over the preceding plies,
07520.14
SUBMITTALS:
deck.
exceed 500'F.
apply the cap sheet flashing sheet into a solid mopping of asphalt.
A. Submit to Architect Prior to Pre - Application Conference and Job
H. Aluminum Coating
4. Do not heat asphalt to the minimum flash point. The minimum
Provide this flashing ply of sufficient width to extend from the
top edge of the flashing surface to a minimum of four inches past
the toe of the cant strip, onto the roof.
2. Completely bond all fleshings to the underlying surface without any
Start:
1. Material Safety Data Sheets (MSDS) for all products
containing "Hazardous Materials` as defined on lists issued by both
the Federal and State governments. Maintain copies of MSDS sheets
I.
1. Material: Asphalt based fibrated or non - fibrated reflective
aluminum roof coating.
2. Nominal Weight: 8 lbs. per gallon
Asphalt Primer
finished blowing temperature may not be exceeded for more than o
total of four hours, for any asphalt batch or portion thereof.
Remove from the project any asphalt heated above these limits.
5. Reduce tanker temperatures to 325'F - 350'F overnight or during
looseness, bubbles, or voids. Remove and replace any loose
flashing materials.
at the job site.
2. Current product literature, installation specifications and
1. Material: A black, medium consistency asphalt cut -back primer
compound of select asphalt and penetrating petroleum solvents.
discontinued work periods.
6. Cold weather application may require the use of insulated supply
3. Fasten the top edge of the base flashing approximately every
six inches on center with appropriate fasteners through one inch
diameter metal discs.
4. Seal all inside and outside corners with roof cement. Cover
all exposed roof cement with aluminum coating or embedded granules.
5. Apply separate wall covering as described below.
C. Wall Covering
1. Apply fiberglass base sheet over the wall, extending from the
top of the wall and down to overlap the base flashing by at least
two inches. Fasten to wall using a shower pattern, spacing nails
no more than 12 inches apart in all directions.
2. Back -mop the cap sheet flashing sheet and apply vertically
into a solid mopping of hot asphalt directly over the nailed base
sheet. Extend wall flashing from the top outside edge of the wall
and down to overlap the base flashing by at least four inches.
3. Fasten the top edge of the wall flashing approximately every
six to eight inches on center with appropriate fasteners through
details.
3. Where roofing or flashing requirements vary from those
described herein or on details, submit shop drawings and /or
specifications to describe proposed modifications prior to job
start.
B. Submit During Project:
1. Asphalt certification or bills of lading to show
manufacturer, ASTM designation, equiviscous temperature (EVT),
finished blowing temperature and flash point with each delivery.
2. Any shop drawings or other requested information.
C. Submit Upon Completion
1. 5 year Contractor Warranty.
2. Letter of certification stating that the products and
installation performed on the project comply with contract
requirements, that any punch list items from the final inspection
have been resolved and that the work is complete.
2. Manufacturing Standards: ASTM D 41.
J. Fasteners for Base Flashing
1. Type: Minimum 11 gauge, barbed, galvanized with minimum 3/8" head.
One inch diameter tin caps or integral heads must be used for base
flashing securement.
2. Manufacturer: Submitted and approved Manufacturer.
3. Size: Sufficient length to penetrate 3/4" minimum.
K. Cant Strips
1. Material: Wood fiber, perlite or soft wood lumber.
2. Manufacturing Standard: ASTM C 208 or ASTM C 728
3. Shape: Triangular
4. Minimum size on Horizontal and Vertical Sides: 4 inches.
L. Protection Material
1. Material: Roof protection material composed of chopped rubber
particle and synthetic binders.
2. Manufacturer and Brand: Siplast Trafbloc or equal.
P.
Q.
lines and equipment to minimize temperature drop from the kettle or
tanker to the point of application. Do not apply asphalt when
ambient temperatures fall below 40'F.
7. Do not apply materials when foaming, blistering, or bubbling
of the hot bitumen occurs. Remove any materials applied when such
activity occurs.
Primer
1. Material may be applied by brush, spray, or roller.
2. Materials may not be diluted or adulterated.
3. Apply primer to any metal surfaces to receive bituminous
products at the nominal rate of one gallon per 100 square feet.
Allow to dry thoroughly prior to application of roofing materials.
Roof Cement
1. Material may be applied either by trowel or by hand.
2. Material may not be diluted or adulterated.
3. Maintain material at the working temperatures recommended by the
Manufacturer.
DPAW BY- nP
CHEM W. rn
euUM DW
K-50
D.
one inch diameter metal discs. Blind nail inside vertical laps
spacing fasteners at 12" o.c. maximum.
4. Adhere ice do water shield coping underla ent over the to
P 9 Ym P
of walls, extending 3" down the vertical surface each side.
5. Install new metal cap coping over top of wall to overlap and
seal the top of the wall flashing.
Drain Flashing:
1. Remove drain ring prior to roofing application.
2. Extend roof plies (excluding surfacing sheet) into the drain
under the clamping ring.
3. Set a four lb. lead sheet into a solid coating of roof cement
over the installed plies. Extend the lead sheet at least 6" beyond
the outside of the drain bowl. Prime the lead sheet and cover with
two stripping plies with the first extending at least 3" beyond the
edge of the lead sheet and the second extending at least 3" beyond
07520.15
A.
B.
C.
D.
07520.16
A.
REFERENCES:
American Society for Testing and Materials (ASTM)
1. D41 Specification for asphalt primer used in roofing.
2. D312 Specification for asphalt used in roofing.
3. D2824 Specification for aluminum roof coating.
4. D4586 Specification for asbestos -free asphalt roof cement.
5. D4601 Specification for glass fiber base sheet.
6. E108 Fire Tests of roof covering.
Underwriters, Laboratories (U.L) Building Materials Directory.
CGSB Standard #37- GP -56M for Modified Bitumen Products.
Manufacturers Current Applicable Roofing Specifications Catalog.
PRODUCT HANDLING:
On packaged asphalt, insure that all cartons are imprinted with
Manufacturer's name, ASTM type, flash point, and EVE For bulk
07520.23
A.
07520.24
SUMMARY OF MEMBRANE COMPONENTS:
Mineral surfaced modified bitumen roofing secured over plywood deck.
1. Summa of materials per 100 square feet (weights shown are
Summary P q ( 9
nominal):
a. Mechanical Fasteners As required
b. Rosin Sheet 6 lbs.
c. Fiberglass Base Sheet 25 lbs.
d. Modified Bitumen Ply Sheet 70 lbs.
e. Asphalt (ply sheet) 25 lbs.
f. Asphalt (surface) 25 lbs.
g. Modified Bitumen Surfacing Sheet 95 lbs.
TOTAL WEIGHT: 246 L.BS.
SUMMARY OF FLASHING SYSTEM COMPONENTS:
A. Base Flashing:
07520.33
A.
C.
APPLICATION OF CANT STRIP AND BASE SHEET:
Install four inch b four inch cant strips at the nature of all
Y " Ps N
vertical surfaces and roof. Where 4 cant strips will not fit, use the
largest practical size. Felt must be adequately supported at
transition between cant strips of different sizes to protect from
tearing. Nail cant strips to wood noilers and /or nailable vertical
surfaces using a maximum nail spacing of 12" o.c.
B. Apply a layer of rosin -sized building paper dry under the nailed
base sheet. Place this sheet over the prepared deck surface and nail
to hold in place until securement of base sheet. Lap all sides and
ends at least 2 ".
Base Sheet Application:
1. Lay the base sheet smooth and free of wrinkles, buckles or
fishmouths.
FRAME
,roe resrM
97125
PPMorYK ISSUE DATE
2/1/97.1
sHM MAW
SP6
the first. Cover stripping plies with appropriate surfacing.
Extend all plies, including field plies, lead sheet, stripping
_1