Drywall Screws Structural Int l Bldg and Resid l Codes

Feb 27 2002 · Lou Using screws instead of nails for attachment of drywall in a drywall shear wall smikkel I agree with you about the screws snapping off and nailing at 4″ o c affecting the sheet integrity Project in question is two story condos 160 0″ x 32 0″ with unit separation common walls at 20 0″ o c

Fastener Loads for Plywood – Screws

b Fastener critical joints are characterized by a shear failure of the screw shank As shown in Figure 1 once localized crushing of the wood has occurred resistance to fastener head embedment into the metal causes the screw to become a shear specimen and joint behav ior is dependent upon the shear strength of the fastener Shear failure

CFS Framed Shear Walls A Code History Simpson Strong

It adds additional shear strength values for steel sheet shear walls and limits diagonal strap braced walls to a 2 1 aspect ratio unless the chord studs are designed for the end moments The seismic response modification coefficient R is currently 6 5 for wood and steel sheet sheathed assemblies 2 0 for gypsum board sheathing and 4 0 for


QuietRock sound reducing drywall by PABCO Gypsum pushes the boundaries of building science to eliminate the need for extra material or complex soundproofing methods Quiet brand products improve architectural freedom and promote sustainable construction

San Jose Seismic Retrofit Performance of Drywall

Testing of Drywall Shear Walls Tests for drywall shear values conducted by the gypsum industry provided results that are much different than the shear values listed in the building code Comparing these results with the information in the code gives us more insight into the shear values seismic retrofit contractors in San Jose should be using

Gypsum Board Shear Values BigMount Heavy Industries

We have gypsum board shear values Shear values for parallel application exceed those for perpendicular application 3 Shear values for ⅝ in 15 9 mm gypsum board exceed those for ½ in 12 7 mm gypsum board 4 Shear values increase with closer spacing of perimeter fasteners and 5 When compared to other shear test results shear values for screws are higher than for nails

Missouri University of Science and Technology Scholars Mine

Shear Resistance of Walls with Steel Studs AISI Report CF 92 2 July 23 1992 1 Next to last line on page 23 change substantially resist later in plane to substantially resist lateral in plane 2 First column on page 37 under heading TYPE OF MATERIAL change Gypaum Wallboard to Gypsum Wallboard


Shear values are based on a maximum framing spacing of 16 inches 406 mm on center ote b 1 inch 25 4 mm 1 foot 304 8 mm 1 pound per foot 1 489 kg m BOARD 503 2 Standards All gypsum board materials shall onform to the appropriate standards listed in Table 503 2 and Appendix A N 780 CMR 2503 0 GYPSUM MATERIALS

Shear value of nails and screws Fine Homebuilding

Jun 15 2000 · Shear value of nails and screws I vaguely remember in a class many years ago studying shear values for rivets and bolts used in structures and the value was partly depended upon the friction created between the two materials being joined which depended upon the contact area created between the two surfaces by the fastener tension or

ARMOROC Structural Cement Board UL Classified

Armoroc Structural Cement Board is a fire resistant alternative to wood based sheet goods and poured systems Traditionally at 3 4 x 4 x 8 this panel cuts and installs with standard carpetry tool and equipment Armoroc is a lightweight fast alternative to poured concrete and because we offer a wide variety of UL tests and accept most finish systems Armoroc is ideal for your fire rated

2015 Special Design Provisions for Wind and Seismic

4 3A Nominal Unit Shear Capacities for Wood Frame Shear Walls Wood based Panels 35 4 3B Nominal Unit Shear Capacities for Wood Frame Shear Walls Wood Structural Panels Applied over 1 2 or 5 8 Gypsum Wallboard or Gypsum Sheathing Board 36 4 3C Nominal Unit Shear Capacities for Wood Frame Shear Walls Gypsum and Portland

DensGlass 5 8 in x 4 ft x 8 ft Exterior Wall Sheathing

The DensGlass Gold 8 ft x 4 ft x 5 8 in Exterior Wall Sheathing features faces made of fiberglass and a core made of moisture resistant material making it a durable and long lasting sub layer for exterior materials such as siding and stucco The sheathing is lightweight and installs easily with standard drywall


TABLE 2508 5 SHEAR CAPACITY FOR HORIZONTAL WOOD FRAMED GYPSUM BOARD DIAPHRAGM CEILING ASSEMBLIES For SI 1 inch 25 4 mm 1 pound per foot 14 59 N m a Values are not cumulative with other horizontal diaphragm values and are for short term loading due to wind or seismic loading Values shall be reduced 25 percent for normal loading

Strong Drive® SDS HEAVY DUTY CONNECTOR Screw Simpson

SDS Allowable Shear Values for Sole to Rim Connections Allowable loads are based on testing per ICC ES AC233 and are limited to parallel to grain loading Allowable loads are shown at the wood load duration factor of C D 1 00 Loads may be increased for load duration by the building code up to

ZIP System® Insulated R Sheathing Huber Engineered Woods

ZIP System R sheathing is the simple all in one structural panel with built in exterior insulation Featuring integrated moisture air and thermal protection ZIP System R sheathing completely reimagines traditional wall assemblies by streamlining exterior water air and thermal management

Installation of Interior Gypsum Board Finish SBC Magazine

Average Ultimate Shear Capacity of 1 2 Gypsum Board Walls As could be expected the shear wall with fasteners spaced 16 o c had an ultimate capacity significantly less than the 200 plf used by the IRC for interior finishes

Q A Shear Strength of Gypboard JLC Online

How much shear strength does drywall really have and why not credit it in the design A As you suspect properly fastened gypboard does have the capacity to resist racking and or lateral forces The 1997 Uniform Building Code Table 25 1 gives shear values for both gypsum wallboard and gypsum


Shear values are comparable for both Type S and W screws 2 Shear values for parallel application exceed those for perpendicular application 3 Shear values for ⅝ in 15 9 mm gypsum board exceed those for ½ in 12 7 mm gypsum board 4 Shear values increase with closer spacing of perimeter fasteners and 5

Sure Board® For Shear Steel Framing

Sure Board® For Shear Sure Board® is a patented revolutionary product designed for today s ever changing construction industry Developed out of the need for a stronger longer lasting and more reliable shear wall panel Sure Board® is the best choice for Engineers Architects and Contractors alike

ExtErior Gypsum shEathinG American Gypsum

Shear Values Shear values for wind or seismic forces based on racking test conducted in accordance with ASTM E 72 on 4 1219mm wide Exterior Gypsum Sheath ing applied parallel to framing Where wind or seismic forces require shear walls to resist these lateral forces most building codes provide allowable shear values for walls having

Wood Frame Shear Wall and Diaphragm Design

MAXIMUM SHEAR WALL DIMENSION RATIOS See SDPWS Table 4 3 4 for footnotes Wood structural panels blocked For other than seismic 3½ 11 For seismic 2 11 Wood structural panels unblocked 2 1 Diagonal sheathing single 2 1 Structural Fiberboard 3½ 13 Gypsum board portlandcement plaster 2 12 L


MECHANICAL PROPERTIES OF GYPSUM BOARD AT ELEVATED TEMPERATURES S M Cramera O M Fridaya and R H Whiteb G Sriprutkiata aDepartment of Civil and Environmental Engineering University of Wisconsin Madison Madison WI 53706 USA bUSDA Forest Service Forest Products Laboratory One Gifford Pinchot Drive

Sure Board Series 200 Spec Sheet Welcome to Cemco

SURE BOARD SERIES 200 Geometric Properties Sure Board® Series 200 for Steel Framing is a steel sheet and gypsum board composite product that is installed on steel framed shearwalls at points requiring shear Steel Thickness Length A ft Width B ft Sheathing Thickness in Steel Thickness Gauge mil 8 9 10 12 48 1 2 to 3 4 22 27

Gypsum Sheathing 800 NATIONAL

Shear values for all gypsum panels including gypsum sheathing are defined in GA 229 Shear Values for Screw Application of Gypsum Board on Walls at gypsum org Install gypsum sheathing in accordance with National Gypsum Company written recommendations and GA 253 Application of Gypsum Sheathing ASTM C1280 Standard Specification

ICC ES Evaluation Report ESR 1338 CertainTeed

4 2 2 2 One hour Gypsum Board Partition with Wood Framing The framing consists of nominal 2 by 4 wood studs spaced 16 inches 406 mm on center with blocking of the same size at midheight Each side of the wall is covered with a single layer of 5 8 inch thick 15 9 mm Type X gypsum board applied either perpendicular to or

Technical Data Shear Resistance Classifications for

Ceiling Diaphragm Span Between Shear Walls 28 ft Ceiling Application 5 16 in S HEETROCK MH Brand Predecorated Ceiling Board L UNAR or 3 8 1 2 5 8 in S MH Brand C 009 and C 2001 Gypsum Panels or Ceiling Boards fastened to trusses 24 in o c using UL Classified Foamseal Inc

Drywall Shear Wall Design Values BigMount Heavy Industries

Shear values for parallel application exceed those for perpendicular application 3 Shear values for ⅝ in 15 9 mm gypsum board exceed those for ½ in 12 7 mm gypsum board 4


The shear capacity shall be adjusted by reduction factorsof0 82forframingmembersofspecieswithaspe cific gravity equal to or greater than 0 42 but less than 0 49 and 0 65 for species with a specific gravity of less than 0 42 as contained in the NDS Nailing of diagonally sheathed lumber diaphragms shall be in accordance with Table 2306 3 3

pre:transducer for shaft position for cone crushernext:crushers mining equipment