A-1 ALLOYS
A-1 ALLOYS INC.
3330 Beyer Bl. #F
San Diego, CA, 92173
Phone: 1-800-266-2569
Fax: (619) 591-2198
Email: a1sales@a1alloys.com
Website: www.birdprecision.com
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The HDS® Framing System is a high-performance, cost-effective, multipurpose, heavy-duty framing stud for headers, jambs, posts and built-up tube truss chords and webs. The superior strength and carrying capacity of the HDS® Framing System means higher performance with fewer members. It means eliminating box beam headers, nesting track and stud for posts and jambs, and eliminating multi-member built-up truss chords and webs. It also means improved finish quality by eliminating excessive material and screw head buildup around doors and windows.
HDS® Interior and Exterior Framing Systems
HDS® Interior and Exterior Framing Systems - Dimensions
Unit of Measure
Items HDS® Interior and Exterior Framing Systems
HDS3-20-3-5/8
HDS® 0.445 Square Inch (in²) Area Interior and Exterior Framing System 		HDS® Interior and Exterior Framing Systems
HDS3-20-4
HDS® 0.574 Square Inch (in²) Area Interior and Exterior Framing System 		HDS® Interior and Exterior Framing Systems
HDS3-20-6
HDS® 0.715 Square Inch (in²) Area Interior and Exterior Framing System 		HDS® Interior and Exterior Framing Systems
HDS3-20-8
HDS® 0.888 Square Inch (in²) Area Interior and Exterior Framing System 		HDS® Interior and Exterior Framing Systems
HDS3-18-3-5/8
HDS® 1.239 Square Inch (in²) Area Interior and Exterior Framing System
Description N/A The HDS® Framing System is a high-performance, cost-effective, multipurpose, heavy-duty framing stud for headers, jambs, posts and built-up tube truss chords and webs. The superior strength and carrying capacity of the HDS® Framing System means higher performance with fewer members. It means eliminating box beam headers, nesting track and stud for posts and jambs, and eliminating multi-member built-up truss chords and webs. It also means improved finish quality by eliminating excessive material and screw head buildup around doors and windows.
Brands N/A A-1 Alloys ClarkDietrich® HDS®
Thickness N/A 20 gauge33 mil N/A 18 gauge43 mil N/A 16 gauge54 mil N/A 14 gauge68 mil N/A 12 gauge97 mil
Design Thickness N/A 0.0346 in N/A 0.0346 in N/A 0.0346 in N/A 0.0346 in N/A 0.0451 in
Tensile Strength Fy N/A 33 ksi
Depth N/A 3-5/8 in N/A 4 in N/A 6 in N/A 8 in N/A 3-5/8 in
Flange Size N/A 3 in
Return N/A 1-1/16 in N/A 1-1/16 in N/A 2-1/4 in N/A 2-1/4 in N/A 1-1/16 in
Double Return N/A 3/4 in
Minimum Delivered Thickness N/A 0.0329 in N/A 0.0428 in N/A 0.0538 in N/A 0.0677 in N/A 0.0966 in
Area N/A 0.445 in² N/A 0.574 in² N/A 0.715 in² N/A 0.888 in² N/A 1.239 in²
Weight N/A 1.52 lb/ft N/A 1.95 lb/ft N/A 2.43 lb/ft N/A 3.02 lb/ft N/A 4.22 lb/ft
Gross Moment of Inertia About X-Axis (Ix) N/A 0.934 in4 N/A 1.198 in4 N/A 1.483 in4 N/A 1.829 in4 N/A 2.520 in4
Gross Section Modulus About X-Axis (Sx) N/A 0.515 in³ N/A 0.661 in³ N/A 0.818 in³ N/A 1.009 in³ N/A 1.390 in³
Gross Radius of Gyration About X-Axis (Rx) N/A 1.448 in N/A 1.444 in N/A 1.441 in N/A 1.436 in N/A 1.426 in
Gross Moment of Inertia About Y-Axis (ly) N/A 0.631 in4 N/A 0.805 in4 N/A 0.990 in4 N/A 1.211 in4 N/A 1.645 in4
The Distance from the Web Centerline to the Center of Gravity (xbar) N/A 1.426 in N/A 1.416 in N/A 1.406 in N/A 1.392 in N/A 1.367 in
Gross Section Modulus About Y-Axis (Sy) N/A 0.405 in³ N/A 0.516 in³ N/A 0.632 in³ N/A 0.770 in³ N/A 1.039 in³
Gross Radius of Gyration About Y-Axis (ry) N/A 1.190 in N/A 1.184 in N/A 1.177 in N/A 1.168 in N/A 1.152 in
St. Venant Torsion Constant Torsional Properties (Jx1000) N/A 0.178 in4 N/A 0.389 in4 N/A 0.764 in4 N/A 1.503 in4 N/A 4.271 in4
Warping Torsion Constant (Cw) N/A 4.624 in6 N/A 5.759 in6 N/A 6.894 in6 N/A 8.151 in6 N/A 10.420 in6
Distance from Shear Center to the Centroid Along the Principal X-Axis (Xo) N/A -3.485 in N/A -3.483 in N/A -3.480 in N/A -3.476 in N/A -3.449 in
Polar Radius of Gyration About the Centroidal Principal Axis (Ro) N/A 3.957 in N/A 3.952 in N/A 3.946 in N/A 3.938 in N/A 3.906 in
Distance from Shear Center to the Centroid Along the Principal X-Axis/Polar Radius of Gyration About the Centroidal Principal Axis 1-(Xo/ro)2 N/A 0.224 Beta N/A 0.223 Beta N/A 0.222 Beta N/A 0.221 Beta N/A 0.220 Beta
Maximum Unbraced Length to Attain Mxa (Lu) N/A 103 in N/A 102 in N/A 82 in N/A 82 in N/A 81 in
Allowable Shear for Bending About X-Axis (Unperforated Vx) N/A 1.03 kips N/A 1.74 kips N/A 3.38 kips N/A 4.37 kips N/A 6.05 kips
Allowable Shear for Bending About X-Axis (Perforated Vx) N/A 0.54 kips N/A 0.68 kips N/A 1.02 kips N/A 1.00 kips N/A 0.92 kips
Allowable Shear for Bending About Y-Axis (Vy) N/A 2.05 kips N/A 3.09 kips N/A 5.77 kips N/A 7.06 kips N/A 9.71 kips
Other Properties (Px)1 N/A 0.29 kips N/A 0.46 kips N/A 1.02 kips N/A 1.51 kips N/A 1.97 kips
Other Properties (Py)2 N/A 0.38 kips N/A 0.61 kips N/A 1.38 kips N/A 2.08 kips N/A 4 kips
Effective Section Modulus About X-Axis (Sxe) Unperforated Bending Properties N/A 0.397 in³ N/A 0.565 in³ N/A 0.711 in³ N/A 0.958 in³ N/A 1.390 in³
Allowable Moment About X-Axis (Mxa) Unperforated Bending Properties N/A 7846 in·lb N/A 11165 in·lb N/A 21290 in·lb N/A 28672 in·lb N/A 45805 in·lb
Effective Section Modulus About X-Axis (Sye) Unperforated Bending Properties (Web in Ten.) N/A 0.401 in³ N/A 0.516 in³ N/A 0.632 in³ N/A 0.770 in³ N/A 1.039 in³
Allowable Moment About Y-Axis (Mya) Unperforated Bending Properties (Web in Ten.) N/A 7917 in·lb N/A 11703 in·lb N/A 21936 in·lb N/A 27606 in·lb N/A 39444 in·lb
Effective Section Modulus About X-Axis (Sye) Unperforated Bending Properties (Web in Comp.) N/A 0.294 in³ N/A 0.425 in³ N/A 0.535 in³ N/A 0.733 in³ N/A 1.039 in³
Allowable Moment About Y-Axis (Mya) Unperforated Bending Properties (Web in Comp.) N/A 5814 in·lb N/A 8401 in·lb N/A 16019 in·lb N/A 21944 in·lb N/A 33711 in·lb
Effective Section Modulus About X-Axis (Sxe) Perforated Bending Properties N/A 0.367 in³ N/A 0.540 in³ N/A 0.683 in³ N/A 0.939 in³ N/A 1.375 in³
Allowable Moment About X-Axis (Mxa) Perforated Bending Properties N/A 7247 in·lb N/A 10674 in·lb N/A 20464 in·lb N/A 28127 in·lb N/A 45285 in·lb
Effective Section Modulus About X-Axis (Sye) Perforated Bending Properties (Web in Ten.) N/A 0.313 in³ N/A 0.400 in³ N/A 0.492 in³ N/A 0.603 in³ N/A 0.820 in³
Allowable Moment About Y-Axis (Mya) Perforated Bending Properties (Web in Ten.) N/A 6192 in·lb N/A 9080 in·lb N/A 17084 in·lb N/A 21607 in·lb N/A 31127 in·lb
Effective Section Modulus About X-Axis (Sye) Perforated Bending Properties (Web in Comp.) N/A 0.243 in³ N/A 0.342 in³ N/A 0.429 in³ N/A 0.572 in³ N/A 0.820 in³
Allowable Moment About Y-Axis (Mya) Perforated Bending Properties (Web in Comp.) N/A 4804 in·lb N/A 6753 in·lb N/A 12844 in·lb N/A 17117 in·lb N/A 26602 in·lb
Effective Moment of Inertia About X-Axis for Deflection Calculations (lxe) N/A 0.851 in4 N/A 1.161 in4 N/A 1.449 in4 N/A 1.829 in4 N/A 2.520 in4
Effective Moment of Inertia About Y-Axis for Deflection Calculations (Web in Ten. (lye)) N/A 0.631 in4 N/A 0.805 in4 N/A 0.990 in4 N/A 1.211 in4 N/A 1.645 in4
Effective Moment of Inertia About Y-Axis for Deflection Calculations (Web in Comp. (lye)) N/A 0.538 in4 N/A 0.741 in4 N/A 0.921 in4 N/A 1.194 in4 N/A 1.645 in4
Construction Advantages N/A
  • Outstanding bending strength in two directions.
  • Reduces installation time by 50%.
  • Eliminates box beam header assembly.
  • Reduces material and labor costs up to 50%.
  • HDS® can be screw-attached from either side.
  • Eliminates stud-to-track nesting for post, header and jamb studs.
  • Openings up to 15' wide.
  • Improves drywall finishing around doors and windows. No screw head buildup.
  • Superior axial strength.
Note N/A Standard material coating is CP60 per ASTM C955; G90 available.
  • 1 For members having a web depth of less than 8" and also having a thickness less than 97 mil, allowable web crippling per AISI Standard for CFS Wall Stud Design 2004. This value assumes the web resists web crippling and the HDS is nested in track having the same thickness. For other members, allowable end one flange web crippling per AISI NASPEC, 2001 with 2004 supplement. Both calculation procedures use a bearing length of 1-1/4".
  • 2 Allowable end one flange web crippling per AISI NASPEC, 2001 w/2004 supplement. This value assumes 2 flanges resist web crippling for a bearing length of 1-1/4".