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REMOVE THIS OUTLINE GUIDE BEFORE PLACING

THE SPECIFICATION SECTION IN THE CONTRACT

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O U T L I N E G U I D E

[DIVISION 6: WOOD AND PLASTICS]{.underline}

SECTION 06125 - WOOD DECKING

USE: Furnishing and installing solid wood or glued-laminated wood T and
G roof decking. Unique job requirements may require specific coverage in
Section 01010 - Summary of Work or Section 01330 - Submittal Procedures.

**NOTES TO SPECIFIER:**

A. Options within paragraphs are identified by enclosure in brackets;
blank spaces enclosed by brackets \[[ ]{.underline}\] provide for
information to be inserted, as appropriate to individual projects.

B. **TO AVOID CONFLICTING REQUIREMENTS AND COSTLY MISTAKES,** the
specifier must edit (delete, substitute or add to the text). The
remaining paragraphs must be renumbered.

C. DELETE FOR FINAL COPY: Notes to the Specifier, located between lines
of asterisks; all \[brackets\], [underlining]{.underline}, **boldface,
**and *italics* within the paragraphs; and this page. (Open Reveal Codes
\[alt F3\] to do this accurately).

D. [To Edit "(Footer B)":]{.underline} (Corel 8). **ENTIRE FOOTER SHOULD
BE BOLDED. **Click in the footer and delete the "Project Name (ftr B)"
text and replace it with the **Name Of The Project (upper/lower case).**
Replace date with current MM/YY (WITHOUT BRACKETS).

E. The Guide Specifications are intended to be continuously reviewed and
revised. User's technical comments are appreciated. Also, other related
or similar specifications that are written "from scratch" that could
benefit others, or other questions can be sent to NSTC A/E Group, ST-110
or call (303) 987-6851.

F. DESIGN NOTES:

1\. **DRAWING DATA REQUIRED:**

**REVISIONS OF THIS SECTION:**

CSI format, editorial changes 10/99

Metric: 3/00

Technical Update: 3/00

SECTION 06125

WOOD DECKING

[PART l: GENERAL]{.underline}

1.1 SUMMARY

A. Section Includes: Furnishing and installing tongue and groove solid
wood or glued-laminated wood roof decking.

B. Related Sections:

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LIST ITEMS OF WORK THAT MIGHT LOGICALLY BE FURNISHED AND INSTALLED UNDER
THIS SECTION, BUT INSTEAD ARE SPECIFIED IN ANOTHER SECTION. THIS ARTICLE
IS RARELY REQUIRED.

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NOTE: WHERE USING WOOD DECKING AS A STRUCTURAL WOOD DIAPHRAGM (IN LIEU
OF PLYWOOD) IS THEORETICALLY POSSIBLE, THE NAILING SPELLED OUT IN THIS
SPECIFICATION HAS [NOT]{.underline} BEEN ENGINEERED TO PROVIDE DIAPHRAGM
ACTION. IF THIS IS DESIRED, AN ENGINEER MUST BE CONSULTED. IT IS MORE
COMMON TO JUST INSTALL A PLYWOOD DIAPHRAGM ON TOP OF THE WOOD DECKING
AND NOT RELY ON THE DECKING FOR DIAPHRAGM ACTION.

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1.2 SUBMITTALS:

A. General: Submittals shall be according to \[Section 01009 - General
Information and Requirements.\] \[Section 01330 - Submittal Procedures\]
\[and\] \[Section 01331 - Certificates.\]

B. Product Data: For glued-laminated wood decking. Include installation
instructions and data on fabrication.

C. Samples: 24-inches (1600 mm) long, showing the range of variation to
be expected in appearance of wood decking, the size, and cross-section
proposed.

1.3 QUALITY ASSURANCE

A. Labeling Requirements: Each length of lumber shall be stamped at the
mill indicating Certification mark, Mill identification, Grade name and
Inspection Certificate. Grade stamp shall be on surfaces not exposed to
view.

B. Failure Criteria: Not limited to the following:

1\. Deformation sufficient to expose toe of tongue.

2\. Deflection in excess of 1/120 of span.

1.4 DELIVERY, STORAGE, AND HANDLING

A. Storage: Store on dry, level platform under weatherproof roof on
four-by-fours spaced 3 feet oc at 90 degrees to length. When required to
store outdoors, furnish plastic sheeting or tarpauline coverings, weight
at top of stack, but leave sides and bottom open for air circulation.
Store on blocks as above to prevent from touching damp or wet surfaces.

[PART 2: PRODUCTS]{.underline}

2.1 MATERIALS

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SELECT QUALITY IS RECOMMENDED FOR CONSTRUCTION IN WHICH FINE APPEARANCE
IS DESIRED. COMMERCIAL QUALITY SHOULD BE USED WHERE APPEARANCE IS LESS
CRITICAL IN REGARDS TO SOLID WOOD DECKING. PICK THE FIRST SET OF VALUES
OF Fb AND E IF SELECT QUALITY IS USED, AND THE SECOND SET OF VALUES IF
COMMERCIAL QUALITY IS USED. MOISTURE CONTENT SBE 15 PERCENT FOR 2 X
DECKING, 19 PERCENT FOR 3 X AND 4 X. OTHER JOINT PATTERNS ARE AVAILABLE.
THE STANDARD JOINTS ARE SPECIFIED. DECORATIVE GRADE AND SMOOTH SANDED
ARE THE MOST COMMONLY SPECIFIED OPTIONS.

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A. Solid Wood Decking: \[2-inch nominal\] (\[37 mm actual\]) \[3-inch
nominal\] (\[56 mm actual\]) \[4-inch nominal\] (\[75 mm actual\])
tongue and groove, V-joint pattern, Douglas Fir-Larch, \[select
quality\] \[commercial quality\], surfaced two sides, maximum ,moisture
content of \[[ ]{.underline}%\], with \[Fb - 2000 psi (\[13.8 Mpa) and E
= 1,8000,000 psi (12,400 Mpa)\], in accordance with WWPA Grading rules,
paragraphs 55.11 and 55.12, and AITC 112.

B. Glued-Laminated Wood Decking: \[2-inch nominal\] (\[37 mm actual\])
\[3-inch nominal\] (\[56 mm actual\]) \[4-inch nominal\] (\[75 mm
actual\]) tongue and groove standard edge vee pattern, Douglas
Fir-Larch, \[Decorative grade\] \[Service grade\] \[Rough-sanded\]
\[Saw-textured\] \[smooth sanded\] maximum moisture content of 14
percent, manufactured with glue conforming to ASTM D 2559, and with
minimum properties if Fb = 2585 psi (17.8 Mpa) and E = 1,800,000 psi
(12,400 MPa).

C. Nails: Common wire nails unless other wire specified or required by
manufacturer of glued-laminated wood decking.

[PART 3: EXECUTION]{.underline}

3.1 EXAMINATION

A. Verification of Conditions: Ascertain that roof framing members are
members specified, are correctly positioned and have connections to
supporting members completed and approved. Required openings in the deck
shall be identified and located. Necessary framing for larger openings
shall be accurately positioned and drawing details reviewed.

3.2 DECKING LAYUP

A Laying of members shall proceed from the outer edges of the deck and
proceed as described toward the upper end of construction. Lay starter
member in a parallel position to roof ridge and assure alignment.

B. Members shall be installed with tongues up on pitched roofs, and
outward in direction of laying on flat roofs.

C. Members shall be installed in a \"controlled random layup\" according
to AITC 113, paragraph 6.4.2.

D. Each member shall bear on at least one support.

E. Members shall be laid with patterned face down and exposed on
underside.

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USE 2 FEET FOR 2 X DECKING, 4 FEET FOR 3 X OR 4 X DECKING.

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F. There shall be a minimum distance of \[2 feet (600 mm)\] \[4 feet
(1200mm)\] between end joints in adjacent members. Joints within 6
inches of being directly in line shall be separated by at least two
intervening courses.

G. Members in first and second courses shall bear on two supports. This
shall be repeated each seven courses and at the last course. End joints
in these two courses shall be at alternate supports.

H. Final member installed shall be custom cut to exact dimension.

3.3 NAILING

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DELETE TYPES OF NAILING NOT USED.

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A. Solid Wood Decking 2-inch nominal (37 mm actual): Each member shall
be nailed at each support with one 16d toenailed through the tongue and
one 16d face nailed.

B. Solid wood Decking, 3-4 inch nominal (56 or 75 mm actual): Each piece
should be toenailed at each support with one 40d nail and face nailed
with one 60d nail. Courses shall be spiked to each other with 8-inch
(200 mm) spikes at intervals not to exceed 30 inches (760 mm) through
predrilled edge holes drilled horizontally into decking member between
the tongues, and with one spike at a distance not exceeding 10 inches
(250 mm) from the end of each piece.

C. Glued-Laminated Wood Decking: Install decking to comply with
manufacturer's written instructions.

1\. Nail each course of decking at each support with one nail diagonally
nailed through the face above the tongue and one straight nailed through
the face.

a\. 12d nails for 2-inch nominal (37 mm actual) decking.

b\. 30d nails for 3-inch nominal (56 mm actual) decking.

c\. 60 d nails for 4-inch nominal (75 mm actual) decking.

Predrill decking to prevent splitting.

2\. Slant nail each course to the tongue of the adjacent course at 30
inches (750 mm) o.c. and within 12 inches (300 mm) of the end of each
unit. Stagger nailing in adjacent courses 15 inches (380 mm).

a\. 6d nails for 2-inch nominal (37 mm actual) decking.

b\. 8d nails for 3-inch nominal (56 mm actual) decking.

c\. 10d nails for 4-inch nominal (75 mm actual) decking.

3.4 PROTECTION

A. Provide temporary waterproof covering to protect exposed decking
before applying roofing.

[PART 4: MEASUREMENT AND PAYMENT]{.underline}

4.1 METHOD OF MEASUREMENT

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WHEN A "LUMP SUM" CONTRACT IS USED, DELETE THE TITLE "PART 4:
MEASUREMENT AND PAYMENT", AND BOTH ARTICLES FROM THIS SECTION.
MEASUREMENT AND PAYMENT WILL BE ADDRESSED IN PAT 4 OF SECTION 01009 -
GENERAL INFORMATION AND REQUIREMENTS OR SECTION 01010 - SUMMARY OF WORK.

WHEN NOT A "LUMP SUM" CONTRACT, SELECT APPLICABLE PHRASES; USE THE "NO
MEASUREMENT" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE
INCLUDED IN THE BID SCHEDULE.

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A. Units: The work described in this section will \[not be measured for
payment\] \[be measured and paid for\] \[on a lump sum basis\] \[by the
board foot of installed lumber when construction of the item has been
completed and the Contracting Officer has accepted the work\].

4.2 BASIS OF PAYMENT

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WHEN NOT A "LUMP SUM" CONTRACT, SELECT APPLICABLE PHRASES; USE THE "NO
DIRECT PAYMENT" PHRASE WHEN NONE OF THE PAY ITEMS IN THIS SECTION ARE
INCLUDED IN THE BID SCHEDULE.

WHEN NOT A "LUMP SUM" CONTRACT AND PAYMENT IS TO BE MADE UNDER THIS
SECTION, SELECT APPLICABLE PAY ITEMS. DO NOT CHANGE PAY ITEM NUMBER.
WHEN GOVERNMENT FURNISHED PROPERTY IS SPECIFIED FOR PAY ITEMS, THE
LETTER SUFFIX GF WILL BE ADDED AFTER THE PARENTHESIS OF THE ITEM NUMBER.

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A. Payment: \[No direct payment for the work described under this
section will be made. Include consideration for this item in the bid
price for other items of the Contract.\] \[Prices and payment will be
full compensation for the work described in this section. Payment will
be made under:\]

[Pay Item Pay Unit]{.underline}

06125(01) Wood Decking Lump Sum

END OF SECTION