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MEADOW BURKE TECHNICAL MANUAL Precast

PrecastMEADOW BURKE TECHNICAL MANUAL3 Table of ContentsRapid Lift System 13 Rapid Lift TECHNICAL Information 14 Rapid Lift System Anchors 26 Double Tee Anchor 46 Rapid Lift System Ring Clutches 48 Rapid Lift System Recess Members & Accessories 51MB DogBone Lifting System 57MB DogBone System TECHNICAL Information 58MB DogBone System Anchors 61MB DogBone System Lifting Hardware 68MB DogBone System Recess Formers

7 Ncb = ANc yed,Nyc,Nycp,NNb Where ANco = 9hef 2 Nb = kcl fchef 1.5 Nb = 16l fchef 5/3 yc,N = 1.25 for cast-in anchors ycp,N = 1.0 ycp,N = 0.7+0.3 kc = 24 l = 1.0 for Normal Weight Concrete, 150 pcf hef = effective depth of the anchor, use equation D-7 for anchors less than 11” and equation D-8 for anchors greater than or equal to 11” ANco 1.5hef Ca, min (D-4)

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Transcription of MEADOW BURKE TECHNICAL MANUAL Precast

1 PrecastMEADOW BURKE TECHNICAL MANUAL3 Table of ContentsRapid Lift System 13 Rapid Lift TECHNICAL Information 14 Rapid Lift System Anchors 26 Double Tee Anchor 46 Rapid Lift System Ring Clutches 48 Rapid Lift System Recess Members & Accessories 51MB DogBone Lifting System 57MB DogBone System TECHNICAL Information 58MB DogBone System Anchors 61MB DogBone System Lifting Hardware 68MB DogBone System Recess Formers 71 Product Safety Considerations 4 Product Coatings and Finishes 5 Safety and TECHNICAL 7 Utility Lifting System

2 75V-Anchor Lifting System TECHNICAL Information 76 Hook-Lift Lifting System Recess Accessories 79MB Cable Lift Loop + Plus System 80 Coil Lifting Inserts 81 Coil Lifting Insert TECHNICAL Information 82 Coil Lifting Inserts 83 Coil Lifting Insert Accessories 90 Rapid-Lok Generation II 97 Assembly Components 98 Service Loads 103 Rapid-Lok Ultimate 109 Components 112 Performance Capacities 114 Welded Wire Girders

3 ForComposite Panels and Slabs 121 Welded Wire Girders for Composite Panels 122 MEADOW BURKE NC Threaded Inserts 125 Accessories 131 Prestress Products 133 Prestress Chucks 134 Prestress Strand Hold Downs 136 Prestress Products 140 Prestress Working Parts 142 Bracing Hardware 147 Warnings 148 Bracing Guidelines 150 Bracing Table Legend 151 Brace Load Tables

4 155 Braces 156 Coil Inserts 160 Anchor Systems 163 Brace Badger 167 BURKE Slot Anchoring System 117 Slotted Inserts 118 MEADOW Burker BT Couplers 143 Installation 146 SafetyEngineeredLifting SystemsHook-LiftCoil LiftingRapid-LokBracingHardwareBurke Slot Anchoring SystemWire GirdersNC ThreadsPrestressBT Products Manual4 Product Safety ConsiderationsMeadow BURKE guarantees the products it manufactures when used by qualified, experienced and properly supervised workmen adhering to the safety factor standards detailed below.

5 Misuse, misapplication or lack of proper supervision and/or inspection can result in serious accidents. If you have unusual applications or are uncertain about a product application, contact your MEADOW BURKE Service Center for clarification and carefully field test the application prior to general using a MEADOW BURKE product take time to carefully consider the application, applied loads, required safety factors, safe working loads and all field conditions to ensure complete safety of all persons SAFETY FACTORSS afety factors are determined by the degree of risk involved in the use of the product and are established by the American concrete Institute (ACI), Occupational Safety and Health Administration (OSHA) and American National Standards Institute (ANSI).

6 Safety factors specific to Precast concrete construction are shown in the following table, other saftey factors may be products displayed in this publication have the applicable safety factor used to derive their safe working loads. This does not relieve the user of the responsibility to carefully calculate and determine the actual loads that will be applied in a specific product application. If the user determines that a safety factor differs from what is printed in this publication is needed, the following equation may be used to raise or lower a safe working load:Adjusted Safe Work Load = Published Safe Working Load (Published Safety Factor) (New Required Safety Factor)If there are any doubts, questions or concerns about safe working loads and/or safety factors, contact your MEADOW BURKE Service CONSIDERATIONSM eadow BURKE cannot control field conditions or field workmanship.

7 Therefore it cannot guarantee any MEADOW BURKE product that has been altered in any way after it has left the manufacturing facility. This includes welding, bending, filing, etc. Never weld to a casting unless authorized by a qualified engineer. Welding to a casting can cause localized embrittlement that greatly reduces the load-carrying capacity of the casting. Tack welding to wire products can have the same WORKING PARTSAll construction-related working parts are subject to wear, misuse, overloading, corrosion, alteration, etc. which may affect the performance of the product.

8 Therefore, all working parts must be regularly inspected to determine if the product can remain in service. The frequency of inspection is based on how often the product is used, period of use and the environment in which it is DESIGN AND SAFE WORKING LOAD CHANGESAs a manufacturer of quality concrete accessories, MEADOW BURKE reserves the right to change product designs and/or product safe working load ratings at any time without prior notice to prospective users. Any such changes will only be made to improve the product or to increase product FactorProduct Intended Use5 to 1 Reusable Hardware for lifting and handling4 to 1 Inserts/Anchors for lifting and handling3 to 1 Permanent to 1 Hold Downs for prestressing Products Manual5 Product and Coating FinishesProducts manufactured by MEADOW BURKE can be supplied in several different coatings or finishes to meet specific corrosion resistance requirements.

9 Note that if no coating or finish is specified when placing an order, the product will be supplied with the standard plain FINISHES AND COATINGSPLAIN Unprotected steel sometimes referred to as black, basic or raw steel. It will corrode or rust when exposed to the A bright shiny or sometimes dull finish generally to inch thick zinc coating. The degree of corrosion protection will vary based on the severity of the environment in which it is used. MEADOW BURKE electro-plated products comply with the ASTM B-633 B-633 ELECTRO-PLATE COATING OF ZINC ON STEELS ervice ConditionExposureCoating ThicknessSC-4 Very


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