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Home My WebLink About12_ADURoof_08-20-21Example of raked gable-end wall (with scissors gable end frame) FIGURE B3-42A bottom chord plane Raked Gable End Frame Example of balloon-framed Gable-End wall. *fire-blocking not shown for clarity FIGURE B3-41 Balloon-Framed Gable End Wall (c)IDDI 2015 - dwj The Building Designer may decide to design a balloon-framed end wall, which eliminates the need for a Gable End Frame (see figure B3-41). If a Gable End Frame is used, it must match the profile of the adjacent trusses so that proper bottom chord plane bracing can be installed (see figure B3-42A) unless special bracing is designed to support the end wall. * CONTRACTOR NOTE: ICE BARRIER IS REQUIRED (R905.2.7.1) Shall extend from lowest edges of all roof surfaces to a point at least 24" inside the exterior wall line of the building. Requirement may be met with: - Titanium Peel and Stick - Weatherwatch - Tarco Ice and Weather Armour - CCW Water and Ice Protection (c)IDDI 2018 - dwj Gable End Truss Connection Detail * Notes: 1) 2-ply trusses to be connected together with 10d (0.131"x3") nails as follows: Top chords: 2x4 -1 row at 4" o.c. Bottom chords: 2x10 - 2 rows staggered at 5" o.c. Webs: 2x4 - 1 row at 0-9-0 o.c. 10) One LUGT2 USP connector recommended to connect truss to bearing walls due to UPLIFT at jt(s) 1 and 11. This connection is for uplift only and does not consider lateral forces. NOTE: 1.MINIMUM GRADE OF #2 MATERIAL IN THE TOP AND BOTTOM CHORDS. 2.CONNECTION BETWEEN BOTTOM CHORD OF GABLE END TRUSS AND WALL TO BE PROVIDED BY PROJECT ENGINEER OR ARCHITECT. 3.BRACING SHOWN IS FOR INDIVIDUAL TRUSS ONLY. CONSULT BLDG. ARCHITECT OR ENGINEER FOR TEMPORARY AND PERMANENT. 4."L" BRACES SPECIFIED ARE TO BE FULL LENGTH. GRADES 1x4 SRB OR 2x4 STUD OR BETTER WITH ONE ROW OF 10d NAILS SPACED 6" O.C. 5.DIAGONAL BRACE TO BE APPROXIMATELY 45 DEGREES TO ROOF DIAPHRAGM AT 4'-0" O.C. 6. CONSTRUCT HORIZONTAL BRACE CONNECTING A 2x6 STUD AND A 2x4 STUD AS SHOWN WITH 16d NAILS SPACED 6" O.C. HORIZONTAL BRACE TO BE LOCATED AT THE MIDSPAN OF THE LONGEST SUD. ATTACH TO VERTICAL STUDS WITH (4)10 NAILS THROH 2x4. (REFR TO SECTION A-A) 7.GABLE STUD DEFLECTION MEETS OR EXCEEDS L/240. 8.THIS DETAIL DOES NOT APPLY TO STRUCTURAL GABLES. 9.DO NOT USE FLAT BOTTOM CHORD GABLES NEXT TO SCISSOR TYPE TRUSSES. 10.SOUTHERN PINE LUMBER DESIGN VALUES ARE THOSE EFFECTIVE 06-01-12 BY SPIB/ALSC. (2)-10d NAILS ROOF SHEATHING (4)-8d NAILS MINIMUM, PLYWOOD SHEATHING TO 2x4 STD SPF BLOCK PROVIDE 2x4 BLOCKING BETWEEN THE FIRST TWO TRUSSES AS NOTED. TOENAIL BLOCKING TO TRUSSES WITH (2)-10d NAILS AT EACH END. ATTACH DIAGONAL BRACE TO BLOCKING WITH (5)-10d COMMON WIRE NAILS. DIAGINAL BRACE AT 1/3 POINTS IF NEEDED 2x6 DIAGONAL BRACE SPACED 48" O.C. ATTACHED TO VERTICAL WITH (4)-16d COMMON WIRE NAILS AND ATTACHED TO CLOCKING WITH (5)-10D COMMONS END WALLHORIZONTAL BRACE (SEE SECTION A-A) TRUSSES @ 24" O.C. 12 VARIES TO COMMON TRUSS - DIAGONAL BRACING REFER TO SECTION A-A - L-BRACING REFER TO SECTION B-B A A B B 24" MAX DIAGONAL BRACE 4'-0" O.C. MAX VERTICAL STUD (4)-16d COMMON WIRE NAILS (2)-10d COMMON WIRE NAILS INTO 2X6 DIAGONAL BRACE SECTION A-A TRUSS GEOMETRY AND CONDITIONS SHOWN ARE FOR ILLUSTRATION ONLY TYPICAL _x4 L-BRACE NAILED TO 2x_ VERTICALS WITH 10d NAILS, 6" O.C. 16d COMMON WIRE NAILS SPACED 6" O.C. 2x6 STUD OR 2x4 No.2 OR BETTER TYPICAL HORIZONTAL BRACE NAILED TO 2x_ VERTICALS WITH (4)-10d COMMON NAILS2x4 STUD SECTION B-B MAX MEAN ROOF HEIGHT = 30 FEET CATEGORY II BUILDING EXPOSURE B OR C ASCE 7-98, ASCE 7-02, ASCE 7-05 90 MOH ASCE 7-10 115 MPH DURATION OF LOAD INCREASE : 1.60 STUD DESIGN IS BASED ON COMPONENTS AND CLADDING CONNECTION OF BRACING IS BASED ON MWFRS. 2x4 SP No. 3/STUD MINIMUM STUD SIZE SPECIES AND GRADE STUD SPACING * DIAGONAL BRACES OVER 6'-3" REQUIRES A 2x4 T-BRACE ATTACHED TO ONE EDGE. DIAGONAL BRACES OVER 12'-6" REQUIRE 2X4 I-BRACE ATTACHED TO BOTH EDGES. FASTEN T AND I BRACES TO NARROW EDGE OF DIAGONAL BRACE WITH 10d COMMON WIRE NAILS 8in O.C., WITH 3 INCH MINIMUM END DISTANCE. BRACE MUST COVER 90% OF DIAGONAL LENGTH. 2x4 SP No. 3/STUD 2x4 SP No. 3/STUD 12" O.C.5-1-15 6-5-2 9-0-15 10-3-13 15-5-12 WITHOUT BRACE MAXIMUM STUD LENGTH 1x4 L-BRACE 2x4 L-BRACE DIAGONAL BRACE 2 DIAGONAL BRACE AT 1/3 POINTS 16" O.C.4-8-4 5-6-13 7-10-7 9-4-8 14-0-12 24" O.C.4-1-2 4-6-8 6-5-2 8-2-5 12-3-7 c Date:mobile #:phone #:Project No.Drawn by:Date:Scale:GENERAL CONTRACTOR:Revised by: Drafting & Design, Inc.B19-0109-1-3McLay Project - SummerHome330 NO. ROUSEBOZEMAN, MONTANACHRIS MCLAY608-774-2678Tract 2D. Johnston 28 Jan 19 D. Johnston 04 Feb 19 These drawings are licensed for ONE USE ONLY. D. Johnston 16 Jan 19 D. Johnston 25 Jan 19 D. Johnston 08 Mar 19IMPACTDRAFTING & DESIGN, incwww.impactdrafting.com2021 Brentwood Professional Center1195 Stoneridge Dr., Suite 3DBozeman, MT. 59718406-522-5382All rights reserved. All designs, drawings, ideas, and written material contained or described herein are the sole property of IMPACT Drafting & Design Inc. and as such may not be altered, duplicated, used or disclosed without written consent from IMPACT Drafting & Design Inc.scale is correct ifprinted on D-Size paperby IMPACT DraftingNote: IMPACT Drafting & Design Inc. is not responsible for engineering orconstruction. Individual contractors are responsible for meeting codes.IMPACT D. Johnston 03 Apr 19 D. Johnston 16 Sep 20CONTACT/OWNER12 131/4" = 1'Roof Sheet ADU ROOF SHEET scale: 1/4" = 1' (c)IDDI 2015 - dwj Attic Venting Calculation Attic Area = approximately 874 sq.ft. - calc. = 1300 (with 40-50% ridge venting min. and vapor barrier installed on the warm-in-winter side of ceiling) - 2.82 sq.ft. of total venting required ridge venting = up to 6.8 sq.ft. available (lf. of ridge x 12" x 2 sides / 144) (40.75 lf. x 12 x 2 / 144) soffit venting = up to 20.38 sq.ft. available (lf. of soffit x 12" x 3" wide / 144) (81.5 lf. x 12 x 3 / 144) - 18x24 gable end vents or equivalent may be added if desired Revised by:Date: Additional Revisions D. Johnston 14 Jul 21 D. Johnston 20 Aug 21 D. Johnston 20 Aug 21 D. Johnston 20 Aug 21 D. Johnston 20 Aug 21