22 INSTALLATION OF ANCHORS OVERHEAD Prior to installing adhesive anchors overhead or in walls, consult with the governing building authority to determine the requirements for fire safety guidelines. The effect of elevated temperature on the Chem-Stud adhesive is shown on in the Adhesive Properties section. Chem-Stud capsules can be used for the installation of threaded anchor rod overhead. The anchor holes should be prepared following the standard installation procedures with the following exceptions. After the anchor hole is drilled and cleaned, insert the proper size capsule into the hole. For the 3" to sizes, select the proper size anchor seal plug and insert it into the hole until the rim of the plug is fully seated against the base material. Be sure the hole is deep enough to accept both the capsule and the plug. Following the standard procedures, insert the chisel-pointed anchor rod through the cross cut opening of the anchor seal plug and spin the rod into the capsule. An alternate method is to use a piece of duct tape or similar material to hold the capsule in place prior to spinning the anchor rod into the hole. If duct tape is used, it will be necessary to secure the chisel-pointed anchor rod in place until the adhesive gels. SUGGESTED SPECIFICATION The adhesive used shall be a two part capsule type system containing an epoxy acrylate resin (vinyl ester). The outer capsule shall contain the resin in which quartz aggregate shall be suspended and the inner capsule shall contain a dibenzoyl peroxide hardener. The capsule used shall have a minimum shelf life of two years. Anchor holes shall be drilled with a bit meeting the requirements of ANSI Standard B212.15 and shall be approved by the manufacturer. The adhesive capsule and anchor hardware components shall be installed according to the manufacturers instructions. Anchor rods (or inserts) shall be manufactured from steel and shall have a chisel point to properly mix the capsule. Chem-Stud capsules and the hardware used (except for reinforcing bar) shall be supplied by Powers Fasteners Inc. Hammer-Capsule BASE MATERIAL Solid Concrete SIZE RANGE 3" to Anchor Rod, No. 3 to No. 8 Reinforcing Bar ANCHOR MATERIAL Ester Based Resin PRODUCT DESCRIPTION The Hammer-Capsule System consists of a self contained, single use, two-part glass capsule into which threaded anchor rod or reinforcing bars can be directly driven without the need for a chisel point or spinning action. It is designed for use in the installation of 3" through diameter threaded rod in solid concrete and masonry materials. It can also be used to install reinforcing bars. A mixture of hardener and quartz aggregate is contained in the upper portion of the capsule while the lower portion contains an epoxy acrylate resin. Unlike traditional capsule anchors which required the use of chisel-pointed anchor rod and special installation tools, the Hammer-Capsule is designed for use with straight cut anchor rod. Straight Cut Rod APPROVALS AND LISTINGS The following approvals and listings are for reference purposes. They should be reviewed by the design professional responsible for the product installation to verify approved base materials, sizes, and compliance with local codes. ICBO ES Evaluation Report No. 4514 SBCCI Report No. 9943 The unique design reduces installation costs when compared with systems requiring chisel pointed rod and special installation tools. HAMMER CAPSULE SPECIFICATIONS The following table lists the shelf life and storage recommendations for the capsule. The properties listed apply to the cured Hammer-Capsule adhesive mortar. Shelf Life 2 years Storage Conditions Store dry at 4 to 9 F. Condition to 6 F. before use. Color Mixed adhesive mortar - amber Consistency Paste mortar
23 The mortar volume listed in the following table is for the mixed material. The diameter and length may be different than products offered by other manufacturer s capsules because of variations in air content. When comparing capsules, use the installed mortar volume. CAT. CAPSULE CAPSULE CAPSULE MORTAR MORTAR NO. SIZE DIAM. LENGTH VOLUME VOLUME 672 3".43" 3.5".4 in 3.22 fl. oz. 673.5 4.3".7 in 3.39 fl. oz. 674 5".67" 5." 1.4 in 3.77 fl. oz. 675 3".78" 5.5" 2.5 in 3 1.13 fl. oz. 676 7".87" 6.89" 3.25 in 3 1.79 fl. oz. 677.95" 8.25" 4.5 in 3 2.48 fl. oz. HAMMER-CAPSULE RECOMMENDED SETTING TIME The setting times for the Hammer-Capsule adhesive mortar are listed below. The setting time is the minimum time required for the mortar to reach its published physical properties. The setting times listed are for the base material temperature, not ambient air temperature. For example, when making installations inside a building in exterior walls during the winter, the temperature of the hole may be different than the interior temperature and should be measured to determine the setting time required. In order to ensure proper mixing, the capsule should be conditioned to a minimum temperature of 6 F. prior to use. BASE MATERIAL TEMPERATURE SETTING TIME 68 F. & over 1 hour 5 F. to 68 F. 2 hours 32 F. to 5 F. 5 hours 23 F. to 32 F. 1 hours 14 F. to 23 F. 24 hours Cure time should be doubled for wet concrete HAMMER-CAPSULE SELECTION GUIDE CAT. *DRILL MIN. STD. STD. WT./ NO. SIZE DIA. DEPTH BOX CTN. 1 672 3" 7/16" 3-1 5 4 673 9/16" 4-1 2 5 674 5" 11/16" 5" 1 2 9 675 3" 7" 6" 5 5 11 676 7" 7" 5 5 14 677 1-8- 5 5 5 * The drill bit diameters and depths listed are for installations using threaded rod. Refer to the load tables for hole size to be used with reinforcing bars. HAMMER-CAPSULE ADHESIVE PROPERTIES RESISTANCE TO S The resistance of the cured Hammer-Capsule adhesive to various chemicals was determined according to ASTM Specification C 581 by laying molded samples of the resin in the respective chemical agents. The samples were subjected to a bending strength test before and after a 12 month exposure to the chemicals. The adhesive was rated as resistant if there was no visible deterioration and less than 25% reduction in bending strength. This exposure is extreme. Under normal installation conditions, the epoxy is exposed to the chemical agents only at the surface of the concrete around the top of the anchor hole. AGENT CONCENTRATION RESISTANT NOT RESISTANT Accumulator acid Acetic acid 4 Acetic acid 1 Acetone 1 Ammonia, aqueous solution 5 Aniline 1 Beer Benzene (kp 1-14 C) 1 Benzole 1 Boric acid, aqueous solution Calcium carbonate, suspended in water All Calcium chloride, suspended in water Calcium hydroxide, suspended in water Carbon tetrachloride 1 Caustic soda solution 1 Citric acid All Diesel oil 1 Ethyl alcohol, aqueous solution 5 Formic acid 1 Formaldehyde, aqueous solution Freon Fuel oil Glycol (Ethylene glycol) Hydrochloric acid Conc. Hydrogen peroxide 3 Isopropyl alcohol 1 Lactic acid All Linseed oil 1 Lubricating oil 11 Magnesium chloride, aqueous solution All Methanol 1 Motor oil (SAE 2 W-5) 1 Nitric acid 3 Nitric acid 1 Oleic acid 1 Perchloroethylene 1 Petroleum 1 Phenol, aqueous solution 8 Phosphoric acid 85 Potash lye (potassium hydroxide solution) 1 Potassium carbonate, aqueous solution all Potassium chlorite, aqueous solution all Potassium nitrate aqueous solution all Premium gasoline 1 Sodium carbonate, aqueous solution all Sodium chloride, aqueous solution all Sodium phosphate, aqueous solution all Sodium silicate all Standard benzine 1 Sulfuric acid 1 Sulfuric acid 7 Tartaric acid all Tetrachloroethylene 1 Toluene Trichloroethylene 1 Turpentine 1 www.powers.com
24 EFFECT OF ELEVATED TEMPERATURE INSTALLATION PROCEDURES As with all adhesive anchors, the bond strength of the Hammer-Capsule is Drill a hole using a carbide tipped bit meeting affected by elevated temperatures in the base material. As the temperature @@@@ ;;;; yyyy of the diameter requirements of ANSI B212.15 to the base material increases, the bond strength of the anchor will decrease. Typical performance of the Hammer-Capsule adhesive at elevated base material the minimum depth required as shown in the temperatures is shown below. The values are based on maintaining the chart. @@@@ ;;;; yyyy concrete test samples used at a given temperature for a minimum of 24 hours before applying a test load. @@@@ ;;;; yyyy 1 Starting from the bottom or back of the anchor hole, blow clean with compressed 9 air, brush the hole with a nylon brush, and blow it clean again. They may be dry or 8 damp, but should be free of standing water or frost. If using reinforcing bar, be 7 sure the bar will fit into the drilled hole. If a larger hole is required, the diameter 6 should be as close as possible to the diameter of the reinforcing bar. Prior to 5 4 installing check the capsule to be sure it is not damaged and invert several times at 6 F or above to confirm all of the resin is in a Percent of Load 3 2 INSTALLATION SPECIFICATIONS The installation requirements listed in the following tables are based on the minimum embedment depth. Adhesive mortar volume per inch is based on the use of carbide tipped masonry bits which meet ANSI Standard B212.15 tolerances. The combination of capsules to use for various embedment depths is listed in the load capacity sections which follow. To calculate the volume of adhesive mortar required for an embedment depth not listed, multiply the mortar volume per inch from the following tables by the embedment required. Select a combination of capsules using the capsule mortar volume in cubic inches. When selecting a combination of capsules, use sizes closest to the diameter of the rod to be used. For example, an installation using 3" threaded anchor rod at a 12" embedment requires 3.91 (12 x.326) cubic inches of adhesive mortar. A combination of two 3" capsule (2.5 cu. in. each) yields 4.1 cubic inches of adhesive mortar. SPECIFICATIONS FOR THREADED ROD 6 1 14 18 22 26 3 Temperature ( F.) MAX. MORTAR ROD DRILL CAPSULE EMBED. TORQUE PER INCH SIZE DIA. SIZE DEPTH (FT.-LBS.) (CU. IN.) 3" 7/16" 3" 3-1.94 9/16" 4-15.133 5" 11/16" 5" 5" 35.184 3" 7" 3" 6" 75.326 7" 7" 7" 1.39 1-8- 15.478 SPECIFICATIONS FOR REINFORCING BARS *MORTAR REBAR REBAR DRILL CAPSULE EMBED. PER INCH SIZE SIZE DIA. SIZE DEPTH (CU. IN.) No. 3 3" 3" 3-.111 No. 4 5" 4-.142 No. 5 5" 3" 5" 5".176 No. 6 3" 7" 3" 6".22 No. 7 7" 7" 7".252 No. 8 1-8-.537 *Actual adhesive mortar volume required will be less due to raised deformations on reinforcing bars. liquid state. Insert the capsule into the hole. @@@ ;;; yyyeither end of the capsule may be inserted first. Vacuuming only is not sufficient. Blow out bulbs @@@ ;;; yyy generally do not provide enough dust removal for most drilled anchor holes. Holes should be clean and sound. Prior to installation check the capsule to be sure it is not damaged and invert several times at 6 F or above to confirm that all of the resin is in a liquid state. Insert the capsule into the cleaned anchor hole. Be careful to observe the direction of insertion. The arrow on the capsule should point toward the bottom of the hole. Drive the threaded rod or reinforcing bar into the anchor hole through the capsule until it is @@@ ;;; yyy fully embedded. A 2 pound hammer and eye protection are recommended. A rotary hammer set in the hammering only mode and Chem- @@@ ;;; yyystud drive adapters can also be used. Stop driving immediately upon reaching the bottom of the anchor hole. Allow the Hammer-Capsule to cure for specified time before loading anchor. Do not disturb the rod once the material has begun to set. @@@ ;;; yyy
25 PERFORMANCE DATA ULTIMATE LOAD CAPACITIES - THREADED ROD IN CONCRETE The following capacities are the ultimate or failure load for the Hammer-Capsule adhesive when tested with high strength anchor rod in several compressive strengths of concrete. The capacity of the anchor rod should be taken into account in the design of any anchorage. The combinations of capsules shown are required to ensure that the proper bond area is achieved. Do not attempt to use more than two capsules. ANCHOR DRILL EMBED. MAX. TORQUE CAPSULES 2, PSI CONCRETE 3, PSI CONCRETE 4, PSI CONCRETE 5, PSI CONCRETE 6, PSI CONCRETE SIZE BIT DEPTH RANGE REQUIRED TENSION SHEAR TENSION SHEAR TENSION SHEAR TENSION SHEAR TENSION SHEAR (IN) (IN) (IN) (FT-LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) 3 7/16 3-1 5-1 One 3" 4,92 4,44 5,88 4,44 6,12 4,44 7,175 4,44 8,21 4,44 3 7/16 7 5-1 Two 3" 9,84 4,44 11,76 4,44 12,24 4,44 14,35 4,44 16,42 4,44 1 9/16 4-1 1-15 One 8,235 1,72 1,335 1,72 11,48 1,72 12,84 1,72 14,2 1,72 1 9/16 8-1 1-15 Two 16,47 1,72 2,67 1,72 22,96 1,72 25,68 1,72 28,4 1,72 5 11/16 5 3-35 One 5" 1,16 17,16 13,8 17,16 15,16 17,16 17,41 17,16 19,66 17,16 5 11/16 1 3-35 Two 5" 2,32 17,16 26,16 17,16 3,32 17,16 34,82 17,16 39,32 17,16 3 7 6 7-75 One 3" 13,8 24,99 17,125 24,99 17,99 24,99 19,19 24,99 2,39 24,99 3 7 12 7-75 Two 3" 26,16 24,99 34,25 24,99 35,98 24,99 38,38 24,99 4,78 24,99 7 1 7 9-1 One 7" 16,265 35,6 21,65 35,6 24,64 35,6 28,425 35,6 32,21 35,6 7 1 14 9-1 Two 7" 32,53 35,6 42,13 35,6 49,28 35,6 56,85 35,6 64,42 35,6 1 1-1 8-1 13-15 One 28,72 46,84 32,265 46,84 32,495 46,84 35,25 46,84 37,92 46,84 1 1-1 16-1 13-15 Two 57,44 46,84 64,53 46,84 64,99 46,84 7,41 46,84 75,84 46,84 1-1 1-3 16 13-15 Two 58,16 49,5 64,775 49,5 65,68 49,5 71,1 49,5 76,1 49,5 ALLOWABLE LOAD CAPACITIES - THREADED ROD IN CONCRETE The allowable bond strengths in the following table are based on applying a minimum safety factor of 4 to the ultimate load capacities for several compressive strengths of concrete. Depending upon anchor application and governing building code, higher factors of safety may be recommended. The design professional familiar with the actual product installation should be consulted. Please refer to the general section entitled Evaluation of Test Data that appears earlier in this manual for current industry standards. The allowable steel strength values are based on the AISC Manual of Steel Construction (Ninth Edition). Values for ASTM A193 Grade B7 steel threaded rod are based on A325 capacities. The allowable load used should be the lesser of the bond or steel strength. ALLOWABLE TENSION ANCHOR DRILL EMBED. ALL. TORQUE ALLOWABLE BOND STRENGTH ALLOWABLE STEEL STRENGTH SIZE BIT DEPTH RANGE 2, PSI 3, PSI 4, PSI 5, PSI 6, PSI ASTM A36 ASTM A37 ASTM A193 B7 AISI 34/316 SS (IN) (IN) (IN) (FT-LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS 3 7/16 3-1 3-5 1,23 1,47 1,53 1,795 2,5 2,115 2,185 4,555 3,63 3 7/16 7 3-5 2,46 2,94 3,6 3,585 4,15 2,115 2,185 4,555 3,63 1 9/16 4-1 5-1 2,6 2,585 2,87 3,21 3,55 3,755 3,885 8,95 6,47 1 9/16 8-1 5-1 4,115 5,165 5,74 6,42 7,1 3,755 3,885 8,95 6,47 5 11/16 5 15-2 2,54 3,27 3,79 4,35 4,915 5,87 6,75 12,655 1,13 5 11/16 1 15-2 5,8 6,54 7,58 8,75 9,83 5,87 6,75 12,655 1,13 3 7 6 35-4 3,27 4,28 4,495 4,795 5,95 8,455 8,75 18,225 12,4 3 7 12 35-4 6,54 8,56 8,995 9,595 1,195 8,455 8,75 18,225 12,4 7 1 7 45-5 4,65 5,265 6,16 7,15 8,5 11,51 11,95 24,85 16,86 7 1 14 45-5 8,13 1,53 12,32 14,21 16,15 11,51 11,95 24,85 16,86 1 1-1 8-1 65-75 7,18 8,65 8,125 8,8 9,48 15,35 15,55 32,4 22,2 1 1-1 16-1 65-75 14,36 16,13 16,245 17,6 18,96 15,35 15,55 32,4 22,2 1-1 1-3 16 65-75 14,54 16,195 16,42 17,775 19,25 23,485 24,295 5,615 34,42 ALLOWABLE SHEAR ANCHOR DRILL EMBED. ALL. TORQUE ALL. BOND STR. ALLOWABLE STEEL STRENGTH SIZE BIT DEPTH RANGE > 2, PSI ASTM A36 ASTM A37 ASTM A193 B7 AISI 34/316 SS (IN) (IN) (IN) (FT-LBS) (LBS) (LBS) (LBS) (LBS) (LBS) 3 7/16 3-1 3-5 1,11 1,9 1,125 2,345 1,87 1 9/16 4-1 5-1 2,68 1,94 2, 4,17 3,33 5 11/16 5 15-2 4,29 3,25 3,13 6,52 5,21 3 7 6 35-4 6,245 4,355 4,55 9,39 6,39 7 1 7 45-5 8,9 5,93 6,135 12,78 8,68 1 1-1 8-1 65-75 11,71 7,745 8,1 16,69 11,34 1-1 1-3 16 65-75 12,375 12,1 12,515 26,75 17,73 www.powers.com
26 ULTIMATE LOAD CAPACITIES - REINFORCING BAR IN CONCRETE The following capacities are the ultimate or failure loads for the Hammer-Capsule adhesive when tested with Grade 6 reinforcing bar. The steel strength values are based on ASTM Standard A 615. The ultimate tension loads for the Hammer-Capsule adhesive should be used as a guide. Actual results may vary depending on the base material condition and reinforcing bar tolerances. The combinations of capsules shown are required to ensure that the proper bond area is achieved. Do not attempt to use more than two capsules. REBAR APPROX. DRILL EMBED. CAPSULES ULTIMATE BOND STRENGTH GRADE 6 REBAR SIZE DIAM. BIT DEPTH REQUIRED 2, PSI 3, PSI 4, PSI 5, PSI 6, PSI YIELD ULT. TENSILE (IN) (IN) (IN) (LBS) (LBS) (LBS) (LBS) (LBS) STRENGTH (LBS) STRENGTH (LBS) No. 3 3 1 3-1 One 3" 7,84 1,52 13,2 13,2 13,2 6,6 9,9 No. 3 3 1 7 Two 3" 15,68 21,4 26,4 26,4 26,4 6,6 9,9 No. 4 1 5 4-1 One 12,72 14,125 15,19 15,19 15,19 12, 18, No. 4 1 5 9 Two 25,44 28,25 3,38 3,38 3,38 12, 18, No. 5 5 3 5 One 5" 16,16 18,28 2,28 21,84 23,4 18,6 27,9 No. 5 5 3 1 Two 5" 32,32 36,56 4,56 43,68 46,8 18,6 27,9 No. 6 3 7 7 One 3" 18,84 2,48 21,22 28,6 34,33 26,4 39,6 No. 6 3 7 14 Two 3" 37,68 4,96 42,44 57,2 68,66 26,4 39,6 No.7 7 1-1 7 One 7" 21,2 22,66 25,73 34,92 38,4 36, 54, No.7 7 1-1 14 Two 7" 42,4 45,32 51,46 69,84 76,8 36, 54, No. 8 1 1-1 8-1 One 22,52 26,29 35,7 38,95 47,6 47,4 71,1 No. 8 1 1-1 16 Two 45,4 52,58 7,14 77,81 95,2 47,4 71,1 ALLOWABLE LOAD CAPACITIES - REINFORCING BAR IN CONCRETE The allowable load values listed for for bond strength in tension are based on applying a minimum safety factor of 4 to the ultimate load capacities listed in the previous table. The steel strength values in tension for reinforcing bars are based upon the allowable stresses as listed in the Uniform Building Code. The allowable load should be the lesser of the bond strength or the steel strength. ALLOWABLE TENSION REBAR APPROX. DRILL EMBED. ALLOWABLE BOND STRENGTH ALLOWABALE REBAR STRENGTH SIZE DIAM. BIT DEPTH 2, PSI 3, PSI 4, PSI 5, PSI 6, PSI GRADE 4 GRADE 6 (IN) (IN) (IN) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) (LBS) No. 3 3 1 3-1 1,96 2,63 3,3 3,3 3,3 2,2 2,64 No. 3 3 1 7 3,92 5,26 6,6 6,6 6,6 2,2 2,64 No. 4 1 5 4-1 3,18 3,53 3,795 3,795 3,795 4, 4,8 No. 4 1 5 9 6,36 7,6 7,595 7,595 7,595 4, 4,8 No. 5 5 3 5 4,4 4,57 5,7 5,46 5,85 6,2 7,44 No. 5 5 3 1 8,8 9,14 1,14 1,92 11,7 6,2 7,44 No. 6 3 7 7 4,71 5,12 5,35 7,15 8,58 8,8 1,56 No. 6 3 7 14 9,42 1,24 1,61 14,3 17,165 8,8 1,56 No.7 7 1-1 7 5,3 5,665 6,43 8,73 9,6 12, 14,4 No.7 7 1-1 14 1,6 11,33 12,865 17,46 19,2 12, 14,4 No. 8 1 1-1 8-1 5,63 6,572 8,765 9,725 11,9 15,8 18,96 No. 8 1 1-1 16 11,26 13,145 17,535 19,45 23,8 15,8 18,96 ALLOWABLE LOAD CAPACITIES - REINFORCING BAR IN CONCRETE ALLOWABLE SHEAR The allowable load values for bond strengths in shear are based on applying a minimum safety factor of 4 to the average ultimate load capacities for the tests conducted with high strength ASTM A193 Grade B7 steel threaded rod. The allowable reinforcing bar strength based on the allowable stresses listed in the Uniform Building Code. The shear-friction coefficient for normal weight concrete was.6. The allowable shear load is based on applying the allowable shear stress to the cross sectional area of the bar and then factoring by the shear-friction coefficient. The allowable shear load chosen should be the lesser of the bond strength or the steel strength. REBAR APPROX. DRILL EMBED. ALL. BOND STR. ALLOWABLE REBAR STRENGTH SIZE DIAM. BIT DEPTH > 2, PSI GRADE 4 GRADE 6 (IN) (IN) (IN) (LBS) (LBS) (LBS) No. 3 3 1 3-1 1,11 1,32 1,585 No. 4 1 5 4-1 2,68 2,4 2,88 No. 5 5 3 5 4,29 3,72 4,465 No. 6 3 7 7 6,245 5,28 6,335 No.7 7 1 7 8,9 7,2 8,64 No. 8 1 1-1 8-1 11,71 9,48 11,375
27 ULTIMATE LOAD CAPACITIES IN GROUT FILLED BLOCK The following ultimate loads are based on tests conducted using threaded rods installed in a wall constructed from C-9 hollow block completely and solidly filled with fine grout. The embedment depths were based on the use of a single capsule. Depending upon anchor application and governing building code, ultimate load capacities should be reduced by a minimum safety factor of 5 or greater to determine the allowable working load. The design professional familiar with the actual product installation should be consulted. Refer to the general section entitled Evaluation of Test Data that appears earlier in this manual for current industry standards. Experience has shown that the consistency of grout filled block varies widely. The capacities listed in this table should be used as a guide. Job site tests should be conducted to determine actual anchor load capacities and verify the suitability of the block wall. ANCHOR HOLE EMBED. GROUT FILLED BLOCK SIZE DIA DEPTH TENSION SHEAR (IN) (IN) (IN) (LBS.) (LBS.) 3 7/16 3-1 4,25 4,5 1 9/16 4-1 7,95 6,455 5 11/16 5 1,62 9,46 3 7 6 11,46 11,84 DESIGN CRITERIA BASE MATERIAL THICKNESS The minimum recommended thickness of solid concrete or masonry base material, BMT, when using an adhesive anchor is 125% of the embedment to be used. For example, when installing an anchor to a depth of 4", the base material should be at least 5" thick. Conversely, the maximum embedment should be 8% of the base material thickness. If a concrete slab is 1" thick, an 8" depth would be the maximum recommended anchor embedment. This does not apply to products designed for installation in hollow base materials. Where: Ts = Applied Service Tension Load TA = Allowable Tension Load Vs = Applied Service Shear Load VA = Allowable Shear Load Dependent upon the election to conduct certain optional independent test procedures, many ICBO evaluated products are currently analyzed more conservatively with the following proportion. T S T () S VS () V A 1..9.8.7.6.5.4.3.2.1 + 1 T () S VS () V A + 1 (straight line) T 5 /3 () S VS () V A (parabolic).1.2 3.4.5.6.7.8.9 1. V S V A 5 /3 + 1 S S E D = Anchor Size S = Spacing E = Edge Distance BMT = Base Material Thickness COMBINED LOADING For anchors loaded in both shear and tension, the combination of loads should be proportioned as follows based on the Uniform Building Code: T 5 /3 () S VS () V A 5 /3 + 1 E D S BMT S ADHESIVE ANCHOR SPACING AND EDGE DISTANCE Adhesive type anchors can be installed closer to the edge of a concrete slab than mechanical anchors with no cracking of the base material. The published ultimate and allowable working loads are based on testing conducted at the spacing and edge distance required to obtain maximum load and should be reduced to account for decreased spacing and edge distance. The reduction load factors listed are cumulative. For example, the allowable working load for an anchor which is installed at a spacing and an edge distance less than that required for maximum load capacity would be multiplied by the appropriate factor from both the spacing and edge distance tables. The factors are normally applied to the allowable working load of the adhesive resin and then compared to the allowable strengths of the steel anchor rods used. See the Design Example featured earlier in this manual. SPACING BETWEEN ADHESIVE ANCHORS The following table lists the load reduction factor, Rs, for each anchor diameter, D, based on the center to center anchor spacing. To obtain the maximum working load in tension or shear, a spacing of 8 anchor diameters (8D) or www.powers.com
28 greater should be used. The minimum recommended anchor spacing is 4 anchor diameters (4D) at which point the allowable working load for the adhesive resin should be reduced by 3%. Anchor spacing closer or less than 4 diameters (4D) need to be field tested. Actual base material conditions will determine any applicable reduction factor. The following table lists the load reduction factor, Rs, for each anchor diameter, D, based on the center to center anchor spacing. 1" 9" 8" 7" 6" S 5" 4" 3" 2" ANCHOR ANCHOR SPACING, S (INCHES) SIZE TENSION AND SHEAR D 8D 7D 6D 5D 4D 1 2 1-3 1-1 1-1 1 3 3 2-5 2-1 1-7 1-1 1 4 3-1 3 2-1 2 5 5 4-3 3-3 3-1 2-1 3 6 5-1 4-1 3-3 3 7 7 6-1 5-1 4-3 3-1 1 8 7 6 5 4 1-1 1 8-3 7-1 6-1 5 1-3 11 9-5 8-1 6-7 5-1 1-1 12 1-1 9 7-1 6 Rs 1..93.85.78.7 EDGE DISTANCE FOR ADHESIVE ANCHORS EDGE DISTANCE - TENSION.7.75.8.85.9.95 1. R S 1 1 1 For adhesive anchors loaded in tension, the following table lists the load reduction factor, Re, for each anchor diameter, D, based on the anchor center to edge distance. To obtain the maximum tension load, an edge distance of 6 anchor diameters (6D) and greater should be used. The minimum recommended edge distance is 4 anchor diameters (4D) at which point the allowable working load for the adhesive resin should be reduced by 4%. Edge distances closer or less than 4 diameters (4D) need to be field tested. Actual base material conditions will determine any applicable reduction factor. The 7 " 5 " following table lists the load reduction factor, Re, for each anchor diameter, D, based on the anchor center to edge distance. E ANCHOR EDGE DISTANCE, E (INCHES) SIZE TENSION ONLY D 6D 5D 4D 1 1-1 1-1 1 3 2-1 1-7 1-1 1 3 2-1 2 5 3-3 3-1 2-1 3 4-1 3-3 3 7 5-1 4-3 3-1 1 6 5 4 1-1 7-1 6-1 5 1-3 8-1 6-7 5-1 1-1 9 7-1 6 Re 1..8.6 EDGE DISTANCE - SHEAR The following table lists the load reduction factor, Re, for each anchor diameter, D, based on the anchor center to edge distance. To obtain the maximum shear E 1" 9" 8" 7" 6" 5" 4" 3" 2" 2" 18" 16" 14" 12" 1" 8" 6" 4" 2".6 7.8.9 1. R e 1 1 1 7 " 5 ".5.6 7.8.9 1. R e 1 1 1 7 " 5 "
29 load, an edge distance of 12 anchor diameters (12D) and greater should be used. The minimum recommended edge distance is 4 anchor diameters (4D) at which point the allowable working load for the adhesive resin should be reduced by 5%. Edge distances closer or less than 4 diameters (4D) need to be field tested. Actual base material conditions will determine any applicable reduction factor. The following table lists the load reduction factor, Re, for each anchor diameter, D, based on the anchor center to edge distance. ANCHOR EDGE DISTANCE, E (INCHES) SIZE SHEAR ONLY D 12D 11D 1D 9D 8D 7D 6D 5D 4D 1 3 2-3 2-1 2-1 2 1-3 1-1 1-1 1 3 4-1 4-1 3-3 3-3 3 2-5 2-1 1-7 1-1 1 6 5-1 5 4-1 4 3-1 3 2-1 2 5 7-1 6-7 6-1 5-5 5 4-3 3-3 3-1 2-1 3 8 8-1 7-1 6-3 6 5-1 4-1 3-3 3 7 1-1 9-5 8-3 7-7 7 6-1 5-1 4-3 3-1 1 12 11 1 9 8 7 6 5 4 1-1 15 13-3 12-1 11-1 1 8-3 7-1 6-1 5 1-3 16-1 15-1 13-3 12-3 11 9-5 8-1 6-7 5-1 1-1 18 16-1 15 13-1 12 1-1 9 7-1 6 Re 1..94.88.81.75.69.63.56.5 SPECIAL APPLICATIONS INSTALLATION OF ANCHORS UNDER WATER The Hammer-Capsule system can be used to install threaded anchor rod or reinforcing bars in submerged applications under water provided some installation and design criteria are followed. A mock installation should be attempted to determine whether the anchor rod can be properly driven through the Hammer-Capsule. The anchor holes should be prepared following the standard installation procedures with the following exceptions. Anchor holes should be drilled at least deeper than the standard embedment depth to insure proper dispersion of the hardener. Special care should be taken to clean the anchor hole as a slurry of concrete paste tends to form on the walls of the anchor hole when drilling under water. Insert the proper size capsule into the anchor hole. Be sure the capsule is fully inserted to the bottom of the hole. Follow the standard installation guidelines for driving the anchor rod used into the capsule. The setting time of the Hammer-Capsule adhesive in submerged applications depends upon the base material temperature as shown previously. Laboratory tests and field experience have shown that a decrease of 3 to 4% in the ultimate tension load capacity can be expected for a Hammer- Capsule anchor which is installed under water. The design professional should include this reduction in his calculations. If the tension capacities are critical, a job site test is recommended. INSTALLATION OF ANCHORS OVERHEAD Prior to installing adhesive anchors overhead or in walls, consult with the governing building authority to determine the requirements for fire safety guidelines. The effect of elevated temperature on the Hammer-Capsule adhesive is shown in the Adhesive Properties. The Hammer-Capsule system can be used for the installation of threaded anchor rod overhead. The anchor holes should be prepared following the standard procedures with the following exceptions. After the anchor hole is drilled and cleaned, insert the proper size capsule into the hole. For the 3" to sizes, select the proper size anchor seal plug and insert it into the hole until the rim of the plug is fully seated against the base material. Be sure the hole is deep enough to accept both the capsule and the plug. Following the standard installation instructions, drive the anchor rod through the cross cut opening of the anchor seal plug into the capsule. An alternate method is to use a piece of duct tape or similar material to hold the capsule in place prior to driving the anchor rod into the hole. If this method is used, it will be necessary to hold the anchor rod in place until the adhesive gels. SUGGESTED SPECIFICATION The adhesive used shall be a two part capsule type system containing an acrylic epoxy resin (vinyl ester). The lower portion of the capsule shall contain the resin in which quartz aggregate shall be suspended while the upper portion of the capsule shall contain a mixture of dibenzoyl peroxide hardener and aggregate. Proper mixing of the capsule components shall be accomplished by driving straight cut anchor rod into the capsule without any spinning action or special tools. The capsule used shall have a minimum shelf life of two years. Anchor holes shall be drilled with a bit meeting the requirements of ANSI Standard B212.15 and shall be approved by the manufacturer. The adhesive capsule and anchor hardware components shall be installed according to the manufacturers instructions. Anchor rods (or inserts) shall be manufactured from steel. Hammer-Capsule anchors and the hardware used (except for reinforcing bar) shall be supplied by Powers Fasteners Inc. www.powers.com