HDU/DTT2Z Holdowns This product is preferab to similar connectors because of a) easier installation, b) higher loads, c) lower instald cost, or a combination of these features. HDU holdowns are pre-defcted during the manufacturing process, virtually eliminating defction under load due to material stretch. They use Simpson Strong-Tie Strong-Drive SDS screws which install easily, reduce fastener slip and provide a greater net section when compared to bolts. The HDU series of holdowns are designed to replace previous versions of the product such as PHD s as well as bolted holdowns. The HDU2, 4 and are direct replacements for the PHD2, and 6, respectively. The DTT2Z tension tie is suitab for lighter-duty holdown applications on sing or doub 2x posts, and installs easily with Strong-Drive SDS screws (included). The DTT2Z has been tested in accordance with the ICC-ES acceptance criteria for Holdowns Attached to s (AC) and meets the minimum requirements for many alternate braced wall panels per section R602.0.3.2 of the 2009 IRC (see tab R602.0.6, item ). For more information on holdown options, contact Simpson Strong-Tie. HDU SPECIAL FEATURES: to material stretch. provide a greater net section area of the post compared to bolts. proper fasteners are used. MATERIAL: See tab FINISH: HDU Galvanized; DTT2Z ZMAX coating; DTT2SS stainss steel INSTALLATION For use in vertical and horizontal applications. cut washer (included) be instald between the nut and the seat. the fasteners required to join the members without splitting the wood. See page 26 for SDS values. pages 33-37 for anchorage options. low speed high torque drill with a 3 8" hex head driver. CODES: See page 3 for Reference Key Chart. Pilot Hos for Manufacturing Purposes (Fastener not required) HDU U.S. Patent 6,2,49;,979,30 For holdowns, per ASTM test standards, anchor bolt nut should be finger-tight plus 3 to 2 turn with a hand wrench, with consideration given to possib future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used. Threaded Rod Vertical Thickness Studs/Post Floor Joist Typical HDU Tie Between Floors 8" 3 4" DTT2Z 2-2x Blocking Horizontal HDU Offset (Plan View) 8" 6 6" Holdown Bearing Plate See footnote 7 Post size by Designer 8" Max. Top of Concrete Hanger not shown wood member thickness Preservativetreated barrier may be required Vertical HDU CL Studs Holdown Rod 2 Slope Max. Coupr." Max. ( ) Sill Plate Holdown Raised Off Sill Plate 46 These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details. Dimensions Fasteners Allowab Tension Loads (lbs.) (60) Ga Anchor Defction at SDS W H B C L Bolt Dia. Thickness 4 DF/SP SPF/HF Allowab Load Screws DTT2Z 8-SDS 4"x 2" 2 82 800 0.0 I6, 4 3 4 6 6 8 3 6 3 6 2 8-SDS 4"x 2" 3 24 83 0.28 L8, F DTT2Z-SDS2. 8-SDS 4"x2 2" 3 24 20 0.28 70 HDU2-SDS2. 4 3 8 6 3 4 6 3 8 8 6-SDS 4"x2 2" 3 307 22 0.088 HDU4-SDS2. 4 3 0 6 3 4 6 3 8 8 0-SDS 4"x2 2" 3 46 328 0.4 HDU-SDS2. 4 3 3 3 6 3 4 6 3 8 8 4-SDS 4"x2 2" 3 64 406 0. 3 980 430 0.084 I6, L8, HDU8-SDS2. 0 3 6 8 3 2 3 8 2 7 8 20-SDS 4"x2 2" 3 2 6970 020 0.6 F 4 2 7870 66 0.3 HDU-SDS2. 0 3 22 4 3 2 3 8 2 30-SDS 4"x2 2" 2 93 686 0.37 7 4 7 804 0.37 4x6 0 0770 77 0.22 70 HDU4-SDS2. 7 3 2 6 3 2 9 6 9 6 36-SDS 4"x2 2" 7 4 437 9 043 9 0.77 I6, L8, 2 8 444 8,9 030 9 0.77 F. Allowab loads have been increased for earthquake or wind load durations with no further increase allowed; reduce where other load durations govern. 2. The Designer must specify anchor bolt type, ngth and embedment. See SB and SSTB Anchor Bolts (pages 33-37). 3. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tabs refct installation into the wide face. See technical bultin T-SCLCOLUMN for values on the narrow face (edge) (see page 232 for details). 4. Post design by Specifier. Tabulated loads are based on a minimum 3 2" wide post (in a 3 2" wall). Post may consist of multip members provided they are connected independently of the holdown fasteners. See pages 226-227 for common post allowab loads.. Tension values are valid for holdowns flush or raised off of sill plate. 6. Defction at Allowab Tension Load includes fastener slip, holdown deformation and anchor rod elongation for holdowns instald up to 6" above top of concrete. Holdowns may be instald raised up to 8" above top of concrete with no load reduction provided that additional elongation of the anchor rod is accounted for. 7. Tabulated loads may be doubd when the holdowns are instald on opposite sides of the wood member provided either the post is large enough to prevent opposing holdown screw interference or the holdowns are offset to eliminate screw interferences. 8. Noted HDU4 allowab loads are based on a 2" wide post (6x6 min.). 9. Requires heavy hex anchor nut to achieve tabulated loads (supplied with holdown). 0. Loads are applicab to installation on either narrow or wide face of post.
HDQ8/HHDQ Holdowns The HHDQ series of holdowns combines low defction and high loads with ease of installation. The unique seat design of the HDQ8 greatly minimizes defction under load. Both stys of holdown employ the Simpson Strong-Tie Strong-Drive SDS screws which install easily, reduce fastener slip and provide a greater net section when compared to bolts. They may be instald either flush or raised off the mudsill without a reduction in load value. SPECIAL FEATURES: provide a greater net section area of the post compared to bolts. fasteners are used. MATERIAL: HDQ8 7 gauge; HHDQ Body: 7 gauge, washer: 2" plate FINISH: HDQ8 Galvanized; HHDQ Simpson Strong-Tie gray paint INSTALLATION determine the fasteners required to join members without splitting the wood. anchorage options. with a 3 8" hex head driver. HDQ8: 8" of adjustability perpendicular to the wall. HHDQ/4: (supplied with holdown) HDQ8 U.S. Patents 6,006,487 and 6,327,83 Thickness Preservativetreated barrier may be required. Thickness HDQ8 Vertical Hanger not shown for clarity HHDQ (HHDQ4 similar) Vertical HHDQ (HHDQ4 similar) Horizontal HDQ8 Ga Dimensions W H B C L Anchor Bolt Dia.. Allowab loads have been increased for earthquake or wind load durations with no further increase allowed; reduce where other load durations govern. 2. The Designer must specify anchor bolt type, ngth and embedment. See SB and SSTB Anchor Bolts (pages 33-37). 3. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tabs refct installation into the wide face. See technical bultin T-SCLCOLUMN for values on the narrow face (edge) (see page 232 for details). 4. Post design by Specifier. Tabulated loads are based on a minimum 3 2" wide post (in a 3 2" wall). Post may consist of multip members provided they are connected independently of the holdown fasteners. See pages 226-227 for common post allowab loads.. Tension values are valid for holdowns flush or raised off of sill plate. 6. Defction at Allowab Tension Load includes fastener slip, holdown Fasteners SDS Screws For holdowns, per ASTM test standards, anchor bolt nut should be finger-tight plus 3 to 2 turn with a hand wrench, with consideration given to possib future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used. Thickness 4 DF/SP Not sure you have the right holdown? The new Holdown Sector software is a great tool to help you sect the best product for the job. Visit www.strongtie.com/software. These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details. Allowab Tension Loads (lbs.) (60) SPF/HF Defction at Allowab Load 6 20-SDS 4"x3" 3 7 4 0.064 HDQ8-SDS3 7 2 7 8 4 2 2 4 2 3 8 7 8 20-SDS 4"x3" 3 2 7630 49 0.094 20-SDS 4"x3" 4 2 9230 664 0.09 HHDQ-SDS2. 7 3 8 3 2 2 7 8 24-SDS 4"x2 2" 2 80 80 0.3 HHDQ4-SDS2. 7 3 8 3 4 3 2 2 7 8 30-SDS 4"x2 2" 7 4 30 9 9370 9 0.07 2 8 370 8,9 074 9 0.07 deformation and anchor rod elongation for holdowns instald up to 6" above top of concrete. Holdowns may be instald raised up to 8" above top of concrete with no load reduction provided that additional elongation of the anchor rod is accounted for. 7. Tabulated loads may be doubd when holdowns are instald on opposite sides of the wood member provided either the post is large enough to prevent opposing holdown screw interference or the holdowns are offset to eliminate screw interferences. 8. Noted HHDQ4 allowab loads are based on a 2" wide post (6x6 min.). All other loads are based on 3 2" wide post minimum. 9. Requires heavy hex anchor nut to achieve tabulated loads (supplied with holdown). 0. HDQ and HHDQ instald horizontally achieve compression loads with the addition of a standard nut on the underside of the load transfer plate. Refer to ICC-ES ESR-2330 for design values. HDQ8 requires a standard nut and BP 7 8-2 (sold separately) load washer on the underside of the holdown for compression load. Design of anchorage rods for compression force shall be per the Designer. I6, L8, F 47
HDC Concentric Holdown This product is preferab to similar connectors because of a) easier installation, b) higher loads, c) lower instald cost, or a combination of these features. The unique design of the HDC holdowns eliminate eccentricity. They install with Simpson Strong-Tie Strong-Drive SDS screws (included) to reduce slip and provide a greater net section area of the post compared to bolts. MATERIAL: 0 gauge strap FINISH: Galvanized strap, aluminum base INSTALLATION proper fasteners are used. 3 8" of adjustment perpendicular to plate. models use narrow cut washer with outside diameter of 3 4". 8". the fasteners required to join members without splitting the wood. treated wood. with a 3 8" hex head driver. HDC0 Patents: U.S. 6,3,290; Can. 2,364,8 Preservative-treated barrier may be required Typical HDC with 2-2x4 Studs (Similar with 2-2x6 studs) For holdowns, per ASTM test standards, anchor bolt nut should be finger-tight plus 3 to 2 turn with a hand wrench, with consideration given to possib future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used. Post Size W H B C L Anchor Bolt HDC0/22-SDS2. 2-2x4 3 8 4 3 8 3 9 6 HDC0/4-SDS2. 4x4 3 9 6 4 8 3 3 6. The Designer must specify anchor bolt type, ngth and embedment. See SB and SSTB Anchor Bolts (pages 33-37). 2. Loads are based on static tests on wood studs, limited by the lowest of 0.2" defction, tested lowest ultimate divided by 3, or the wood screw value. 3. Defction at Highest Allowab Tension Load includes fastener slip, holdown elongation, and anchor bolt elongation. 4. The HDCs will be limited by wood compression capacity if instald on a sill plate. HDC0/22 will achieve an allowab load of 400 lbs. Number of SDS 4"x2 2" Allowab Tension Loads DF/SP (60) Allowab Tension Loads SPF/HF (60) Allowab Download DF/SP (00) Allowab Download DF/SP (60) Defction at Highest Allowab Tension Load 7 8 24 93 67 7070 92 0.04 7 8 24 93 67 9600 00 0.04 on a DFL plate. HDC0/4 will achieve an allowab load of 4940 lbs. on a DFL plate, which does not take defction into account. Full tension values apply when instald on a sill, defctions may be higher.. Higher values may be obtained when HDC is not placed at an edge or with f'c concrete strength > 200 psi. 6. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tabs refct installation into the wide face. See technical bultin T-SCLCOLUMN for values on the narrow face (edge) (see page 232 for details). 7. Post design by Designer. See pages 226-227 for common post allowab loads. I6 MSTD Marriage Strap The MSTD marriage strap provides an overlapping, in-line splice between an HTT tension tie and a CMSTC6 coid strap for panelized-roof applications where the roof member adjacent to the wall is too short to develop the required load into the roof diaphragm. The MSTD provides continuity of load without the need to splice the CMSTC6 alongside the HTT which requires additional blocking. Use MSTD4 with HTT4 and MSTD with HTT. MATERIAL: 6 gauge FINISH: Galvanized (G90) INSTALLATION: Use all specified fasteners. See General Notes. the HTT and CMSTC as specified per the Designer. Position HTT over the framing (do not install fasteners yet). Align CMSTC6 with the end of the HTT. Position MSTD over the two connectors so that nail hos align correctly. Install specified fasteners, filling all nail hos. Total L Tension Tie CMSTC6 Fasteners HTT Allowab Tension Loads MSTD4 8 HTT4 6-6d Sinker 2-6d Sinker 300 MSTD 27 HTT 24-6d Sinker 8-6 Sinker 44 60 8" 6 2" 3" 3 6" Typ. 6" 3 2" Typ. HTT4 3" Typ. 8" MSTD4 (MSTD similar) MSTD4 9 6" 2" Typ. CMSTC6 48. Install on minimum 4x4 blocking. 2. 0d common nails may be substituted at 00% of tab load. 3. Allowab tension loads include a load duration increase on the fasteners for wind or earthquake with no further increase allowed. 4. NAILS: 0d common = 0.48" dia. x 3" long, 6d sinker = 0.48" dia. x 3 4" long. See page 22-23 for other nail sizes and information. Typical MSTD4
LTT/HTT Tension Ties Tension ties offer a solution for resisting tension loads that is fastened with nails. The entire line of tension ties has been tested and evaluated to the requirements of AC. The HTT4 and HTT are the latest generation of tension ties. They feature an optimized nailing pattern which results in better performance with ss defction. Designed to meet new code standards, the HTT4 and HTT offer higher loads than their predecessors. The LTT9 Light Tension Tie is designed for 2x joists or purlins and the LTT20B is for nail- or bolt-on applications. The 3" nail spacing makes the LTT20B suitab for wood I-joists with 0dx 2. The LTTI3 is designed for wood chord open web truss attachments to concrete or masonry walls and may also be instald vertically on a minimum 2x6 stud. MATERIAL: See tab FINISH: Galvanized. May be ordered HDG; contact Simpson Strong-Tie. INSTALLATION Designer must determine the fasteners required to join members without splitting the wood. The Designer shall specify anchor bolt type, ngth and embedment. See SB and SSTB anchor bolts on pages 33-37. For tension ties, per ASTM test standards, anchor bolt nut should be finger-tight plus 3 to 2 turn with a hand wrench, with consideration given to possib future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used. LTTI3 Load transfer plate washer not required LTT20B (LTT9 similar) HTT (HTT4 similar) U.S. Patent,467,70 These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details. These products are approved for installation with the Strong-Drive SD Structural-Connector screw. See page 27 for more information. Material (Ga) Dimensions Seat Fasteners Allowab Tension Loads (60) Defction Thick- at Highest Strap Plate W L C L ness Anchor Bolts Fasteners DF/SP SPF/HF Allowab Load LTT9 3 6 3 3 4 9 8 3 8 6 2, 8 or 3 4 8-0dx 2 30 2 0.80 8-0d 340 0 0.7 0-0dx 2 3 6 0.9 L9, LTT20B 3 2 3 2 9 3 4 2 6 2, 8 or 3 4 0-0d 00 290 0.8 IP2, 2-2" Bolt 62 400 0.83 F4 LTTI3 8 3 3 3 4 3 3 8 4 8 8-0dx 2 30 60 0.93 8-0dx 2 360 30 0.086 HTT4 2 2 2 3 8 6 7 6 8 8-6dx2 2 423 3640 0.23 8-SD #0x 2 9 44 3830 0.2 60 26-0dx 2 430 3740 0.20 L9, HTT 2 2 6 6 7 6 8 26-0d 4670 40 0.6 IP2, 26-6dx2 2 090 6 437 0.3 F4 HTTKT 7 4 2 2 6 6 7 6 8 26-SD #0x2 2 44 360 0.03 60. Allowab loads have been increased for wind or earthquake with no further increase allowed. Reduce where other loads govern. 2. Post design by Specifier. Tabulated loads are based on minimum 3"x3 2" (2-2x4) post (in 3 2" wall). Post may consist of multip members provided they are connected independently of the holdown fasteners. See pages 226-227 for common post allowab loads. 3. A standard cut washer is required under anchor nut for LTT9 and LTT20B when using 2" or 8" anchor bolts. No additional washer is required when using a 3 4" anchor bolt. 4. Defction at Highest Allowab Tension Load includes fastener slip holdown deformation, and anchor bolt elongation for holdowns instald up to 4 2" above top of concrete. HTT4 and HTT may be instald raised up to 8" above top of concrete with no load reduction provided that additional elongation of the anchor rod is accounted for.. If the base of the LTTI3 is instald flush with a concrete or masonry wall, the allowab load is 228 lbs. 6. Allowab tension load for HTT with a bearing plate washer BP/8-2 (sold separately) instald in the seat of the holdown is 29 for DF/SP and 4 for SPF/HF. 7. HTTKT is sold as a kit with the holdown, BP 8-2 bearing plate washer and 26-SD #0x2 2 screws. 8. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tabs refct installation into the wide face. See technical bultin T-SCLCOLUMN for values on the narrow face (edge) (see page 232 for details). 9. HTT4 with SD #0x 2 screws achieves full load on a sing 2x6 stud or joist. 0. FASTENERS: 0dx 2 = 0.48 dia. x 2" long, 0d = 0.48" dia. x 3" long, 6dx2 2 = 0.62" dia. x 2 2" long, SD #0x2 2 = 0.6" dia. x 2 2", SD #0x½ = 0.6" dia. x 2". 3" Min. Vertical HTT4 Preservativetreated barrier may be required Horizontal LTTI3 Hanger not shown for clarity Horizontal HTT 2" Horizontal LTT9 (LTT20B similar) 49
HDB/HD Holdowns 0 Simpson Strong-Tie offers a wide variety of bolted holdowns offering lowdefction performance for a range of load requirements. All of these holdowns have been tested in accordance with ICC-ES s AC acceptance criteria and are approved for use in vertical and horizontal applications. The HD3B is a light-duty holdown designed for use in shearwalls and braced-wall panels, as well as other lateral applications. The HDB, HD7B and HD9B bolted holdowns incorporate the proven design of our HDQ8 SDS-sty holdown and feature a unique seat design which greatly minimizes defction under load. HDB holdowns are self jigging, ensuring that the code-required minimum of seven bolt diameters from the end of the post is met. They can be instald directly on the sill plate or raised above it and are suitab for back-to-back applications where eccentricity is a concern. HDBs are designed to provide loads for intermediate-load-range shearwalls, braced-wall panels and lateral applications. HD holdowns offer the highest allowab loads, providing high capacity for both vertical and horizontal applications. The HD2 and HD9 are self jigging, ensuring that the code-required minimum of seven bolt diameters from the end of the post is met. They can be instald back-to-back when eccentricity is an issue. MATERIAL: See tab FINISH: HD3B/HDB/HD7B/HD9B Galvanized; HD Simpson Strong-Tie gray paint INSTALLATION 32" to a maximum of 6" larger than the bolt diameter (per NDS, section..2). washers between the wood and nut (BP s are required in the City and County of Los Anges). embedment. See SB and SSTB Anchor bolts (pages 33-37). determine the fasteners required to join members without splitting the wood. These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details.. Allowab loads have been increased for wind or earthquake with no further increase allowed: reduce where other loads govern. 2. Post design by Specifier. Tabulated loads are based on 3 2" wide member minimum, unss noted otherwise. Post may consist of multip members provided they are connected independently of the holdown fasteners. See pages 226-227 for common post allowab loads. 3. Structural composite lumber columns have sides that show either the wide face or the edges of the lumber strands/veneers. Values in the tabs refct installation into the wide face. See technical bultin T-SCLCOLUMN for values on the narrow face (edge) (see page 232 for details). 4. HD and HDB holdowns are self-jigging and will ensure minumum bolt end distance, HB, when instald flush with the sill plate. CL SB B HDB (HD7B and HD9B similar) U.S. Patents 6,006,487; 6,327,83 For holdowns, per ASTM test standards, anchor bolt nut should be finger-tight plus 3 to 2 turn with a hand wrench, with consideration given to possib future wood shrinkage. Care should be taken to not over-torque the nut. Impact wrenches should not be used. Material Dimensions (in) Fasteners Allowab Tension Defction Loads (60) at Highest Base Body Allowab (in) Ga HB4 SB W H B C L Anchor Stud Dia. Bolts Thickness 2 DF/SP SPF/HF Load 2 89 60 0.6 HD3B 2 4 3 4 2 2 2 2 8 8 2 4 6 3 8 8 2-8 HDB 3 6 0 4 3 2 2 9 3 8 2 2 4 2 8 2-3 4 HD7B 3 6 0 4 3 2 2 2 3 8 2 2 4 2 7 8 3-3 4 HD9B 3 8 7 6 8 3 2 2 7 8 4 2 2 4 2 3 8 HD2 9 3 8 3 7 4 3 2 20 6 4 4 2 8 3 8 HD9 9 3 8 3 7 4 3 2 24 2 4 4 2 8 3 8 7 8 3-7 8 4-8 4-8 - 4 - W HB 2 2 22 24 0.69 3 330 300 0.20 3 2 330 300 0.20 2 2 370 390 0.29 3 40 378 0.6 3 2 493 49 0.0 3 664 60 0.42 3 2 730 62 0.4 4 2 734 624 0. 3 2 7740 680 0.9 4 2 9920 843 0.78 2 9920 8430 0.78 7 4 003 830 0.79 3 2 30 92 0.7 4 2 266 076 0.7 2x 2 4220 208 0.62 3 2 77 92 0.7 4 2 333 0 0.77 7 4 43 320 0.94 2x 2 0 2690 0.62 7 4 673 422 0.9 2x 2 677 2690 0.200 7 4 9360 270 0.80 2x 2 9070 620 0.37 H B SB C L IP3, F28, L2 W HD9 (HD2 similar) HB H wood member thickness Washers must be instald between bolt nuts and wood Stand off provides minimum end distance to end of post from post bolt wood member thickness Washers must be instald between bolt nuts and wood Vertical HD9 See foonote 4 HD3B Vertical. Defction at Highest Allowab Tension Load includes fastener slip holdown deformation, and anchor bolt elongation for holdowns instald up to 6" above top of concrete. Holdowns may be instald raised up to 8" above top of concrete with no load reduction provided that additional elongation of the anchor rod is accounted for. 6. To achieve published loads, machine bolts shall be instald with the nut on the opposite side of the holdown. If reversed, the Designer shall reduce the allowab loads shown per NDS requirements when bolt threads are in the shear plane. 7. Lag bolts will not develop the listed loads. 8. Tabulated values may be doubd when the HD holdown is instald on opposite sides of the wood member. The Designer must evaluate the capacity of the wood member and the anchorage. 9. Standard cut washer is required under anchor nut for HD2 with " anchor and HD9 with 8" anchors. B SB CL W HD3B Hanger not shown HB Horizontal HDB (Plan View) H
LSTHD/STHD Strap-Tie Holdown Min. Stem Wall (in) 6 8 Min. Stem Wall (in) 6 8 This product is preferab to similar connectors because of a) easier installation, b) higher loads, c) lower instald cost, or a combination of these features. The STHD is an embedded strap-tie holdown offering high load capacity and a staggered nail pattern to help minimize splitting. The STHD incorporates many features that aid correct installation and improve performance. When instald on the forms with the StrapMate strap holder the unique design of the STHD delivers enhanced stability before and during the pour to help prevent both parall and perpendicular movement (relative to the form). This results in accurate positioning of the strap and reduced possibility of spalling. FEATURES concrete bond and help to reduce spalling loss of strap nailing MATERIAL: LSTHD8, LSTHD8RJ 4 gauge, all others 2 gauge FINISH: Galvanized INSTALLATION (bent horizontal 90 then bent vertical) to aid wall placement, but may cause spalling behind the strap. If the spall is " or ss, measured from the embedment line to the bottom of the spall, full loads apply. " to 4" spalls for LSTHD8 achieve 0.9 times tab loads. STHD0 and STHD4 achieve full load for spalls ss than 4". Any portion of the strap ft exposed should be protected against corrosion. (a) a horizontal cold joint exists within the embedment depth between the slab and foundation wall or footing beneath, unss provisions are made to transfer the load, or the slab is designed to resist the load imposed by the anchor; or (b) slabs are poured over concrete block foundation walls. Additional studs attached to the shearwall studs or post may be required by the Designer for wall sheathing nailing. strap to buck outward. Tension Loads for STHD s WIND AND SDC A & B ALLOWABLE TENSION LOADS FOR DF/SP/SPF/HF (60) Strap Length (L) Non Cracked Cracked Standard Rim Joist Req d Nails Standard Rim Joist (in) (in) (in) Midwall Corner Endwall Midwall Corner Endwall LSTHD8 LSTHD8RJ 8 8 32 8 8 20-6d Sinkers 3 2700 690 267 2320 4 STHD0 STHD0RJ 24 8 38 8 0 24-6d Sinkers 3820 3820 200 340 340 70 STHD4 STHD4RJ 26 8 39 8 4 30-6d Sinkers 0 0 3200 0 0 3200 I2. LSTHD8 LSTHD8RJ 8 8 32 8 8 20-6d Sinkers 3 2700 2230 267 2320 9 F33 STHD0 STHD0RJ 24 8 38 8 0 28-6d Sinkers 47 420 34 49 300 28 STHD4 STHD4RJ 26 8 39 8 4 30-6d Sinkers 34 34 420 34 34 420 SDC C-F ALLOWABLE TENSION LOADS FOR DF/SP/SPF/HF (60) Nails are countersunk for a low-profi strap surface. Strap Length (L) Non Cracked Cracked Standard Rim Joist Req d Nails Standard Rim Joist (in) (in) (in) Midwall Corner Endwall Midwall Corner Endwall LSTHD8 LSTHD8RJ 8 8 32 8 8 6-6d Sinkers 2270 2090 220 220 90 220 STHD0 STHD0RJ 24 8 38 8 0 8-6d Sinkers 270 270 6 2640 2640 43 STHD4 STHD4RJ 26 8 39 8 4 22-6d Sinkers 369 369 268 369 369 268 I2. LSTHD8 LSTHD8RJ 8 8 32 8 8 6-6d Sinkers 26 22 63 220 90 60 F33 STHD0 STHD0RJ 24 8 38 8 0 20-6d Sinkers 3400 2940 229 3400 2940 27 STHD4 STHD4RJ 26 8 39 8 4 24-6d Sinkers 38 38 300 38 38 300. Allowab loads are for wind or seismic loading. Nail quantities refct an increase for duration of load with no further increase allowed. Reduce where other loads govern. 2. Concrete shall have a minimum concrete strength, f' c of 200 psi. 3. 0d common (3" long x 0.48" diameter) nails may be used with no load reduction. 0dx2 2 (2 2" long x 0.48" diameter) nails may be used with no load reduction when instald directly over framing. For installation over structural sheathing, use 0d common or 6d sinkers. 4. Use the specified number of nails listed in tab or as specified. In many cases, not all nail hos will be fild. Nail strap from the bottom up.. Defction at highest allowab loads for install over wood doub studs are as follows: Instald on framing: LSTHD8 = 0.089", STHD0 = 0.7" STHD U.S. Patent,83,82 Naid Portion Car Span 7" Max. 2" Min. from Corner Typical STHD4RJ Rim Joist Application For Two-Pour for Downturn Footings 8" stemwall loads of the LSTHD8. 8" stemwall loads of the STHD0. 8" stemwall loads of the LSTHD8. and STHD4 = 0.8". Instald over structural sheathing: LSTHD8 = 0.4", STHD0 = 0.46" and STHD4 = 0.64". 6. Multiply Seismic and Wind ASD load values by.4 or.6 respectively to obtain LRFD capacities. 7. Per 2009 and 202 IBC Section 63., detached one- and two-family dwellings in Seismic Design Category (SDC) C may use Wind and SDC A&B allowab loads. 8. center-to-center spacing is 3 times the required embedment (S min = 3 x l e) for STHD s acting in tension simultaneously. Midwall install is based on. x l e end distance. 9. See T-SCLCOLUMN for installation on structural composite lumber posts or columns (see page 232 for details). 0. For brick dge applications, use full loads shown for STHD4 instald in 8" stemwall.. NAILS: 6d sinker = 0.48" dia. x 3 4" long. See page 22-23 for other nail sizes and information.
LSTHD/STHD Strap-Tie Holdown Min. rebar ngth is 2 x l e 2" Min. end distance 2 x l e min. or 24" Typical STHD4 Corner 2 x l e 2 x l e Min. rebar ngth Typical STHD4 Mid Wall 2" Min. end distance Typical STHD4 End Wall Min. rebar ngth is 2 x l e 2 Strap sty holdown Concrete foundation by others 3" to " One #4 rebar. May be foundation rebar or post-tension tendon. Sing Pour Rebar *Maintain minimum rebar cover, per ACI-38 concrete code requirements. SPALL REDUCTION SYSTEM FOR STHD STRAP TIE HOLDOWN FEATURES locator line. BENEFITS Built-in Tab: StrapMate Locator Line: Additional Diamond Ho: models from bowing out at the rim joist section. Strap sty holdown Slab thickness Effective Embed. Concrete foundation by others Cold joint Two Pour for Downturn Footings 3" to " One #4 rebar. May be foundation rebar or post-tension tendon. SM U.S. Patent 6,796,099 Brick Ledge 8" Min. Strap may be bent one full cyc which includes bending the strap straight and aiding for wall placement.for brick dge, bend straight to be vertical to inside face of wall. #4 Rebar Brick Ledge with Step STHD4-RJ Shearwall diaphragm Framing nails and anchor bolts as per code Brick Ledge Structural sheathing STHD 8" Min. Brick Ledge without Step Install strap nails starting from the bottom Sill plate bolt Required rebar not shown for clarity (typ.) STHD Over Shearwall Diaphragm #4 Rebar STHD4 bend straight install 4" from inside face of concrete wall, typ.
PA Strap Tie Holdowns -to-concrete connectors that satisfy engineering and code requirements. The PA is code listed in ICC-ES ESR-2920 under the 2009 and 202 IBC and have been tested to meet the requirements of ICC-ES acceptance criteria AC-398 for cracked and un-cracked concrete. MATERIAL: 2 gauge FINISH: Galvanized or ZMAX coating INSTALLATION 2" bolts through existing hos. (see page 23 for details) for additional information. These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details. These products are approved for installation with the Strong-Drive SD Structural-Connector screw. See page 27 for more information. Strap Length, L Wind and SDC A & B Allowab Tension Loads (lbs.) Non Cracked Concrete Cracked Concrete Required Nails Tension Required Nails Tension PA 4 0-0d Common 202 0-0d Common 202 PA68 70 4 0-0d Common 202 0-0d Common 202 I2 Length 2 6" Pilot hos for manufacturing purposes and should not be used to attach to framing members unss approved by the Engineer of Record or specified in Simpson Strong-Tie literature 3 4" Typ. Bend additional strap over top or cut off " Side Cover Typical PA Connecting Stud To Foundation l e Doub 2x0 Rim Joist SDC C-F Allowab Tension Loads (lbs.) Strap Length, L Non Cracked Concrete Cracked Concrete Required Nails Tension Required Nails Tension PA 4 0-0d Common 202 0-0d Common 980 PA68 70 4 0-0d Common 202 0-0d Common 980 I2 PA (PA68 similar). Allowab loads have been increased for earthquake or wind load durations with no further increases allowed. 2. Concrete shall have a minimum concrete strength, f'c of 200 psi. 3. Strong-Drive SD9x 2 (0.3"x 2") screws may be substituted for nails with no reduction. 4. NAILS: 0d = 0.48" dia. x 3 " long. See page 22-23 for other nail sizes and information. Typical PA (PA68 similar) NEED A HIGHER CAPACITY HOLDOWN? When one of our conventional holdowns doesn t offer enough overturning capacity for a multi-story project, consider specifying the Simpson Strong-Tie Anchor Tiedown System (ATS). ATS is a highcapacity, overturning-restraint system commonly used in 3-6 story wood structures to anchor stacked shearwalls. This continuous rod system features our patented shrinkage take-up devices and extends from the foundation to the top of the structure and is restrained (tied off) at each vel. Designed properly, it can provide more than 0,000 lbs. of overturning restraint; important when designing for the cumulative overturning forces in multi-story buildings. For more information, see page 68 of this catalog; and for specification options, see our Anchor Tiedown Systems Options for Specification brochure (F-ATSD0) or visit www.strongtie.com/ats. 3
PA/HPA Purlin Anchors PA/HPA purlin anchors offer solutions for wood to concrete and concrete block connections which satisfy code requirements. The PAs dual embedment line allows installation in concrete or concrete block. The PA and HPA are code listed in ICC-ES ESR-2920 under the 2009 and 202 IBC and IRC and have been tested to meet the requirements of ICC-ES acceptance criteria AC-398 for cracked and un-cracked concrete. MATERIAL: PA 2 gauge; HPA 0 gauge FINISH: Galvanized. PA s availab HDG or ZMAX coating INSTALLATION See General Notes. or masonry wall. (Bent vertical 90 then bent horizontal.) EDGE DISTANCE concrete edge distance is ". concrete block ft-to-right edge distance is 20". CONCRETE BLOCK WALL The minimum wall specifications are: A One #4 vertical rebar, 32" long, 6" each side of anchor; B Two courses of grout fild block above and below the anchor (no cold joints allowed); C A horizontal bond beam with two #4 rebars, 40" long, a maximum of two courses above or below the anchor. D masonry compressive strength, f' m = 00 psi. OPTIONS: See LTT and HTT Tension Ties for alternate retrofit solutions. ASCE7-0 2..2.2. states:... Diaphragm to structural wall anchorage using embedded straps shall have the straps attached to or hooked around the reinforcing steel, or otherwise terminated to effectively transfer forces to the reinforcing steel. 2" 2" 8 4" HPA3 Embedment 6" HPA28 Embedment 6" Masonry Embedment 4" Concrete Embedment PA Length 3 4" HPA3 3 4" 2 6" 2 6" These products are availab with additional corrosion protection. Additional products on this page may also be availab with this option, check with Simpson Strong-Tie for details. Max. Ledger Size 4x Ledger Max. Ledger Size 4x Ledger Wind and SDC A & B - Allowab Tension Loads (lbs.) Strap Non Cracked Concrete Cracked Concrete Max. Allowab Length, Strap Tensi L Required Nails Tension Required Nails Tension Capacity PA8 8 2 4 2-0d Common 2430 2-0d Common 2360 NA 89 PA23 23 3 4 4 6-0d Common 3220 2-0d Common 2360 NA 28 PA28 29 4 6-0d Common 3370 2-0d Common 2360 NA 28 PA3 3 4 6-0d Common 3370 2-0d Common 2360 NA 28 HPA28 32 2 6 22-0d Common 4 20-0d Common 467 NA HPA3 38 2 8 4 22-0d Common 4 22-0d Common 4 NA SDC C-F - Allowab Tension Loads (lbs.) #4 Rebar Min. Pressure-treated barrier may be required #4 Rebar min. Masonry Strap Non Cracked Concrete Cracked Concrete Max. Allowab Length, Strap Tensi L Required Nails Tension Required Nails Tension Capacity PA8 8 2 4 2-0d Common 2430 0-0d Common 980 3220 89 PA23 23 3 4 4 4-0d Common 2830 0-0d Common 980 3220 28 PA28 29 4 4-0d Common 2830 0-0d Common 980 393 28 PA3 3 4 4-0d Common 2830 0-0d Common 980 393 28 HPA28 32 2 6 22-0d Common 4 8-0d Common 4090 4 HPA3 38 2 8 4 22-0d Common 4 22-0d Common 4 4 4" for PA 6" for HPA28 8 4" for HPA3 Min. solid 3x (nominal) or doub 2x I2 Masonry I2. Allowab loads have been increased for earthquake or wind load durations with no further increases allowed. 2. Defction at highest allowab loads are as follows: PA8 = 0.087", PA23 = 0.8", PA28 = 0.08", PA3 = 0.08", PA & 68 = 0.00", HPA28 = 0.33" and HPA3 = 0.32". 3. Multiply Seismic and Wind ASD load values by.4 or.6 respectively to obtain LRFD capacities. 4. center-to-center spacing is 3 times the required embedment. Standard installation is based on minimum " end distance.. For wall anchorage systems in SDC C-F, the maximum allowab strap tensi capacity shall not be ss than.4 times the ASD anchor design load per ASCE7-0 2..2.2.2. 6. Nail quantities are based on Douglas Fir (DF) and Southern Pine (SP). For use on Spruce Pine-Fir (SPF) or Hem Fir (HF) nail quantities must be increased by. to achieve allowab loads alternatively, loads may be decreased by a. factor. 7. Concrete shall have a minimum concrete strength, f'c of 3000 psi. 8. For Masonry Loads, see Non-Cracked Concrete for Required Nails. 9. 0dx 2" nails may be substituted for 0d commons with no load reduction and with a % increase in defction. For installation over sheathing use 3" minimum nail ngths. 0. f'm = 00 psi for masonry.. NAILS: 0d = 0.48" dia. x 3" long. See page 22-23 for other nail sizes and information. 4 PA/HPA Purlin to Concrete Block Wall (Refer to installation notes above) Hanger not shown for clarity PA/HPA Purlin to Concrete Wall For I-Joist applications see page 27.