Rigging Design Guide. MyTiCon Timber Connectors by MyTiCon Timber Connectors

Transcription

1 Rigging Design Guide MyTiCon Timber Connectors by MyTiCon Timber Connectors May, 2018

2 The information contained in this document is for general information purposes. We suggest that all rigging and panel material handling procedures conducted with the system outlined in this document are to be approved by a qualified design professional familiar with the governing site conditions and the conditions of the system. While we aim to keep the information provided in this document complete, accurate, up to date and in accordance with applicable design standards, we can not make warranties of any kind. Images and drawings provided are for reference only and can not be applicable to all conditions that may occur on site. Any reliance you place on such information is therefore strictly at your own risk. In no event will we assume liability for any loss or damage including and without limitation, indirect or consequential loss or damage, or any loss or damage whatsoever arising from loss of profits arising out of, or in connection with the use of the system. Through the use of the document and system you are able to derive other uses which are outside of our control. The inclusion of the system or the implied use of the document to other applications is outside of our responsibility. Copyright 2018 by MyTiCon Timber Connectors All rights reserved. This document or any portion thereof may not be reproduced or used in any manner whatsoever without the expressed written permission of the publisher. 2

3 TABLE OF CONTENTS RIGGING DEVICES... 6 Yoke Dimension Specifications... 7 NOTES TO THE DESIGNER... 9 PREPARING A RIGGING PLAN DETERMINING THE FACTORED TOTAL LOAD (P)...11 Factored Total Load (P) Equation...11 Dynamic Acceleration Factor (K v )...11 Optional Safety Factor (K OS )...11 CALCULATING THE CAPACITY OF THE ANCHORS (Z ) Capacity of the Anchors (Z ) Equation Sling Angle Reduction Factor (R AR ) Load Spreader Reduction Factor (R LS ) Load Duration Reduction Factor (R D ) Screw Selection Guide REFERENCE RIGGING CAPACITY PER ANCHOR (Z) Floor/Roof CLT Panel Rigging Wall CLT Panel Rigging Glulam Beam Rigging SLING INSTALLATION Sling Angle Load Spreading END AND EDGE DISTANCE REQUIREMENTS Floor/Roof CLT Panel Rigging Wall CLT Panel Rigging Glulam Beam Rigging RECOMMENDED WORKFLOW CHECK LIST

4 Build Strong, Build Sustainable, Build The Future MyTiCon is a specialty supplier of connection systems for modern mass-timber and heavy-timber applications in commercial, industrial and residential projects. We are proud to be working with the most innovative partners on cutting-edge projects across North America. Are you working on a mass-timber project, looking to connect heavy timbers or use a timber-concrete composite CLT floor? We have the right solution for you. We believe in the connection technologies we offer. We dedicate our team of product consultants and timber engineers to support you and your projects. Our specialists operate coast to coast in all time zones. We speak English, French and German. Our goal is to see the mass-timber industry thrive and help to maintain a low carbon footprint through our support, our innovative research and cost-effective approaches. 4

5 Main and 49 th Ave Main Street Punjabi Market in Vancouver is one of the first CLT hybrid structures in North America, combining conventional stick frame wall elements and CLT floor elements. 5

6 RIGGING DEVICES Different rigging systems are available designed for a diversity of mass timber elements, in most rigging scenarios. Safe rigging is achieved using code-approved, high-strength fasteners used in combination with lab-tested rigging devices called yokes. By selecting the appropriate yoke, and adjusting fastener size, mass timber elements of all weights, types, and dimensions can be rigged. Yoke 1T The Yoke 1T system is designed and tested for lightto-medium weight CLT panels and glulam elements using ½ Kombi screws. Through a variety of screw lengths, reference rigging capacities of up to 1,500 lbs. per yoke can be achieved. Yoke 5T The Yoke 5T system is designed and tested for heavy CLT panels and glulam elements using ½ Kombi screws. Through a variety of screw lengths, reference rigging capacities of up to 5,500 lbs. per yoke can be achieved. Yoke XL The Yoke XL system uses smaller diameter fasteners with appropriate spacing requirements to lift CLT panels on the narrow edge. Yoke XL anchors also provide a solution for flat panel rigging by using a greater number of fasteners to achieve adequate screw anchorage in 3-ply panels. This system is compatible with the 3/8 Ecofast capable of rigging 3-1/8 (78 mm) thick panels and VG CSK (fully threaded) fasteners, with a maximum reference rigging capacities of 7,800 lbs. per yoke. 6

7 Yoke Dimension Specifications The following page presents the different yoke dimension specifications. 3-7/8 9/ /16 3-1/2 1/2 Figure /16 Yoke 1T anchor specifications 1-9/16 2-3/8 7/8 1-9/ /16 2-1/2 7-1/2 1-11/16 1/2 Figure /2 Yoke 5T anchor specifications 1-3/16 1-3/ / /16 2-3/8 2-15/16 7/8 1-3/16 1-3/16 3-9/ /16 5/8 Figure /16 Yoke XL anchor specifications 7

8 TESTED PRODUCT All products listed in this design guide have undergone comprehensive testing up to ultimate failure of the system using North American timber species. Picture provided by BYU RIGGING HAZARDS In order to ensure safe rigging operation, special attention should be given to the following points: Factored load of the rigged element (P) Maximum anchor capacity (Z ) Maximum capacity of slings, ropes, connection points and other hardware (Please refer to your respective rigging equipment provider). In order to ensure stable rigging with appropriate load sharing, the center of gravity shall be determined and pick points shall be chosen accordingly. All rigging shall be done by qualified personnel only. Before each lift, all hardware shall be checked for possible defects, material fatigue or abrasion. 8

9 NOTES TO THE DESIGNER 1. All rigging elements shall be approved by a licensed design professional. It is the responsibility of the rigger to ensure proper work safety environment and verify the condition of the equipment. All suggestions and details shown are to be treated as general and can not be assumed to be valid for all construction requirements & specific site conditions. 2. In this guide, the term yoke refers only to the yoke itself, while the term anchor refers to the yokes and the screws as a system. The capacity of the yoke represents the upper limit in terms of capacity per anchor, while the reference lifting capacity (Z) takes into account the capacity of the screws. 3. Rigging capacity: The total capacity of the anchors (Z ), resolved into the vertical components, must be greater than the factored total load (P) of the rigged element. To ensure full connection capacities, fasteners should penetrate panel plies to the largest extent possible, with a minimum of three plies penetrated. 4. Anchor placement: End and edge distance requirements must be respected, (see p.20 for more details). Additional moment equilibrium calculations are required to determine the proportion of the factored total load shared by each anchor for situations where anchors are not spaced equidistant around the center of gravity. The placement of the anchors should not exceed the maximum span of the lifted element. 5. Rigging slings and load spreader: Slings must lift elements at a minimum angle of 60 measured between the sling and the panel surface (β). Otherwise, the capacity of the anchors shall be adjusted with the appropriate sling angle reduction factor (R AR ) given in Table 3. Sling angles should not exceed 30 measured between the sling and the vertical (λ) to avoid excessive forces in the slings. A load spreader/compensation system shall be used for lifts using more than two anchors. Otherwise, the capacity of the anchors shall be adjusted with the appropriate load spreader reduction factor (R LS ). 6. Rigging condition requirements: Before each lift, check to see that the sling is properly attached. The load line should be brought over the element s center of gravity before the lift. No object or person can be present on the panels when rigged (no live load). Suspended loads should be securely slung and properly balanced before they are set in motion. Keep the load under control at all times. The use of taglines is recommended to prevent uncontrolled motion. Loads must be safely landed and properly blocked before being unhooked and unslung. 7. To ensure safety and proper capacity, the fasteners used for panel rigging should only be used once. Proper inspection should be performed frequently to ensure the structural integrity of the devices. If any damage or failure is noticed, stop using the device immediately. 8. The maximum installation torque of the screws is as follows: Table 1, Fastener Torsional Strength Screw diameter 3/8 [10 mm] 1/2 [12 mm] Maximum torque 26.6 lbs ft 38.6 lbs ft 9

10 PREPARING A RIGGING PLAN The procedure proposed below contains the steps recommended for the licenced design professional to prepare a rigging plan. Step 1) Determine the type of rigging and the assigned specific gravity based on wood species. Step 2) Step 3) Step 4) Step 5) Determine the factored total load (P) based on weight of the panel and rigging conditions (p.11). Determine the minimum reference rigging capacity per anchor (Z) required based on: Anchor capacity calculation, (p.12) Recommended fastener length, (p.13). Reference rigging capacity per anchor, (p.14 - p.17). Verify the sling angle relative to the element surface (β), and the effective number of anchors, (p.12). Determine the sling angle relative to the vertical (λ). Determine the pick points, considering even load sharing as well as edge and end distance requirements, (p.20). Type of Rigging The type of rigging is divided into three different categories depending on what type of engineered wood product is rigged and the orientation of the element. Floor or Roof CLT Panel Wall CLT Panel Glulam Beam Assigned Specific Gravities (G) Reference rigging capacities are calibrated to lift elements made of S-P-F or D.fir wood. The assigned specific gravities are as follows: S-P-F Douglas Fir G = 0.42 G = 0.49 Note: As per NDS 2018, section 12, Table A. All connection design must meet all relevant requirements of the Notes to the Designer section. 10

11 DETERMINING THE FACTORED TOTAL LOAD (P) Determining the factored total load (P) of the rigged element is essential. Actual loads must be factored up. The proposed method incorporates a dynamic acceleration factor and an optional safety factor considering the rigging scenario. In all the cases, the factored total loads (P) shall be specified and approved by a licensed design professional. The proposed method is presented below: P = p K v K OS p K v K OS Unfactored weight [lbs] Dynamic acceleration factor Optional safety factor For rigging mat rigging: K OS = 1 For open space rigging: K OS = 1.2 For tight space rigging: K OS = 1.3 The unfactored weight of the elements (p) is usually provided on shop drawings or manufacturer s specifications. Table 2 presents recommended dynamic acceleration factors (K v ) subject to approval by the licensed design professional. Table 2, Proposed Dynamic Acceleration Factors, K v Crane Type Dynamic Acceleration Factor, K v Fixed crane 1.1 to 1.3 Mobile crane 1.3 to 1.4 Bridge crane 1.2 to 1.6 Rigging and moving on flat terrain 2.0 to 2.5 Rigging and moving on rough terrain 3.0 to 4.0 Source: Pfeifer, Snaam, Halfen, Peikko, Arteon In cases where information on weight is not provided, a calculation based on the dimensions and the wood species may be done to estimate the unfactored weight in lbs.: h b l Element thickness [in.] Element width [ft.] Element length [ft.] p = (h b l) G C G Assigned specific gravities; 0.42 or 0.49 C Unit conversion factor [1] : 5.98 [1] The unit conversion factor contains adjustments from oven dry to standard dry service condition moisture content. 11

12 CALCULATING THE CAPACITY OF THE ANCHORS (Z ) Z = Z n R AR R LS R D Z n R AR Reference rigging capacity per anchor (provided in design tables) Number of anchors used Sling angle (β) reduction factor: All sling angles are 60 to the panel surface: R AR = 1.0 One or more sling angle is <60 to the panel surface: Table 3, Reduction factor for sling angle <60 β R AR R LS R D Load spreader reduction factor: If n = 2: R LR = 1.0 If n = 4, with adequate load spreader/compensation device: R LR = 1.0 If n = 4, without adequate load spreader/conpensation device: R LR = 0.5 Load duration reduction factor: Short term rigging (<10 min): R D = 1.0 Long term rigging (>10 min): R D = 0.78 λ c λ d β c β d λ a β a λ b βb 12

13 Screw Selection Guide Fastener length is often limited by the thickness of the rigged panel element. While it is recommended that the screws should penetrate as many plies as possible, a minimum clearance of 3/8 is recommended to avoid through penetration. The following table provides suggested fastener lengths for most common North American CLT thicknesses. Table 4, ASSY Screw Length Suggestion According to Panel Thickness Number of Plies 3-ply 5-ply 7-ply CLT Type Thickness Yoke Type Yoke 1T Yoke 5T Yoke XL in. [mm] Screw in. [mm] Screw in. [mm] Screw in. [mm] 3-1/8 [78] 3-3/8 [87] 3-1/2 [89] 4 [100] 4-1/8 [105] Kombi 1/2 x 3-1/8 [12x80] Kombi 1/2 x 3-1/8 [12x80] Kombi 1/2 x 4 [12x100] Kombi 1/2 x 4 [12x100] 4-3/4 [120] Kombi 1/2 x 4-3/4 [12x120] Kombi 1/2 x 4-3/4 [12x120] 4 [100] Kombi 1/2 x 4 [12x100] Kombi 1/2 x 4 [12x100] 4-3/4 [120] 5-1/8 [131] 5-1/2 [139] 5-5/8 [143] 6-1/4 [160] 6-7/8 [175] 7-1/8 [180] 7-7/8 [200] Kombi 1/2 x 4-3/4 [12x120] Kombi 1/2 x 4-3/4 [12x120] Ecofast 3/8 x 3-1/8 [10x80] VG CSK 3/8 x 4 [10x100] VG CSK 3/8 x 4 [10x100] Kombi 1/2 x 6-1/4 [12x160] Kombi 1/2 x 6-1/4 [12x160] VG CSK 3/8 x 6-1/4 [10x160] 4-3/8 [111] Kombi 1/2 x 4 [12x100] Kombi 1/2 x 4 [12x100] VG CSK 3/8 x 4 [10x100] 7-1/2 [191] 7-3/4 [197] 8-3/8 [213] 8-5/8 [220] 9-5/8 [245] Kombi 1/2 x 6-1/4 [12x160] Kombi 1/2 x 6-1/4 [12x160] VG CSK 3/8 x 6-1/4 [10x160] Note: Fastener lengths are suggestions only and can be adapted to fit certain site conditions and rigging needs. The thread length on the fastener determines the capacity of each system. Kombi 1/2 x 6-1/4 Kombi 1/2 x 4-3/4 Kombi 1/2 x 4 VG CSK 3/8 x 6-1/4 VG CSK 3/8 x 4 Ecofast 3/8 x 3-1/8 Kombi 1/2 x 3-1/8 13

14 REFERENCE RIGGING CAPACITY PER ANCHOR (Z) Floor/Roof CLT Panel Rigging Table 5, Reference Rigging Capacity for Flat CLT Panel Rigging using Yoke 1T (Z) Rigging Device Yoke 1T Notes: See notes under table 6 Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /8 [78] 1/2 x 3-1/8 1,150 4 [100] 1/2 x 4 1,150 Kombi 4-3/4 [120] 1/2 x 4-3/4 1, /4 [160] 1/2 x 6-1/4 1, /8 [78] 1/2 x 3-1/8 1,400 4 [100] 1/2 x 4 1,400 Kombi 4-3/4 [120] 1/2 x 4-3/4 1, /4 [160] 1/2 x 6-1/4 1,500 Table 6, Reference Rigging Capacity for Flat CLT Panel Rigging using Yoke 5T (Z) Rigging Device Yoke 5T Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /8 [78] 1/2 x 3-1/8 2,000 4 [100] 1/2 x 4 2,000 Kombi 4-3/4 [120] 1/2 x 4-3/4 2, /4 [160] 1/2 x 6-1/4 5, /8 [78] 1/2 x 3-1/8 2,200 4 [100] 1/2 x 4 2,200 Kombi 4-3/4 [120] 1/2 x 4-3/4 3, /4 [160] 1/2 x 6-1/4 5,500 Notes: 1. Reference rigging capacities (Z) listed are only valid for allowable stress design in USA. 2. Reference rigging capacities (Z) listed need to be factored with appropriate reduction factors (R AR ; R LS ; R D ) given on page Reference rigging capacities (Z) listed are valid for a minimum sling angle to the panel (β) of Reference rigging capacities (Z) listed are only valid with listed ASSY screws. 5. The resistance of ASSY screws can only be assured for a single use. New screws are to be used for each lift. 6. The right ASSY screw length should be chosen to penetrate panel plies to the largest extent possible, refer to p The maximum installation torque of ASSY screws shall not exceed the fastener torsional strength given in Table 1. 14

15 Floor/Roof CLT Panel Rigging Table 7, Reference Rigging Capacity for Flat CLT Panel Rigging using Yoke XL (Z) Rigging Device Yoke XL ; 4 screws Rigging Device Yoke XL ; 8 screws Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /8 [78] Ecofast 3/8 x 3-1/8 1,600 4 [100] 3/8 x 4 2,500 VG CSK 6-1/4 [160] 3/8 x 6-1/4 4, /8 [78] Ecofast 3/8 x 3-1/8 1,800 4 [100] 3/8 x 4 2,800 VG CSK 6-1/4 [160] 3/8 x 6-1/4 5,000 Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /8 [78] Ecofast 3/8 x 3-1/8 3,100 4 [100] 3/8 x 4 4,800 VG CSK 6-1/4 [160] 3/8 x 6-1/4 7, /8 [78] Ecofast 3/8 x 3-1/8 3,400 4 [100] 3/8 x 4 5,400 VG CSK 6-1/4 [160] 3/8 x 6-1/4 7,500 Rigging Device Yoke XL ; 12 screws Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /8 [78] Ecofast 3/8 x 3-1/8 4,700 4 [100] 3/8 x 4 7,400 VG CSK 6-1/4 [160] 3/8 x 6-1/4 7, /8 [78] Ecofast 3/8 x 3-1/8 5,200 4 [100] 3/8 x 4 7,600 VG CSK 6-1/4 [160] 3/8 x 6-1/4 7,800 Notes: 1. Reference rigging capacities (Z) listed are only valid for allowable stress design in USA. 2. Reference rigging capacities (Z) listed need to be factored with appropriate reduction factors (R AR ; R LS ; R D ) given on page Reference rigging capacities (Z) listed are valid for a minimum sling angle to the panel (β) of Reference rigging capacities (Z) listed are only valid with listed ASSY screws. 5. The resistance of ASSY screws can only be assured for a single use. New screws are to be used for each lift. 6. The right ASSY screw length should be chosen to penetrate panel plies to the largest extent possible, refer to p The maximum installation torque of ASSY screws shall not exceed the fastener torsional strength given in Table 1. 15

16 Wall CLT Panel Rigging Table 8, Reference Rigging Capacity for Wall CLT Panel Rigging using Yoke XL (Z) Rigging Device Yoke XL ; 12 screws Specific Gravity Min Panel Thickness Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /2 [87] VG CSK 3/8 x 6-1/4 1, /2 [87] VG CSL 3/8 x 6-1/4 1,100 Notes: 1. Reference rigging capacities (Z) listed are only valid for allowable stress design in USA. 2. Reference rigging capacities (Z) listed account for tilting up the panel during the rigging process. 3. Reference rigging capacities (Z) listed are only valid with listed ASSY screws. 4. The capacity of the anchors (Z ) must be greater than half the factored total load (1/2 P) as shown below. 5. The resistance of ASSY screws can only be assured for a single use. New screws are to be used for each lift. 6. The maximum installation torque of ASSY screws shall not exceed the fastener torsional strength given in Table If splitting is observed, immediately stop the rigging operations and contact a licensed design professional. Z ½ P ½ P Tabulated reference rigging capacities in the wall CLT panel rigging section are designed to allow the panel to be tilted up, as shown below. 16

17 Glulam Beam Rigging Table 9, Reference Rigging Capacity for Glulam Beam Rigging using Yoke 1T (Z) Lifting Device Specific Gravity Min Beam Width Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs. Yoke 1T 1/2 x 4-3/4 1, /8 [78] Kombi 1/2 x 6-1/4 1,500 1/2 x 4-3/4 1, /8 [78] Kombi 1/2 x 6-1/4 1,500 Notes: See notes under table 10 Table 10, Reference Rigging Capacity for Glulam Beam Rigging using Yoke XL (Z) Lifting Device Yoke XL ; 4 screws Rigging Device Yoke XL ; 8 screws Specific Gravity Min Beam Width Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /2 [87] VG CSK /2 [87] VG CSK Specific Gravity Min Beam Width 3/8 x 4 2,500 3/8 x 6-1/4 4,500 3/8 x 4 2,800 3/8 x 6-1/4 5,000 Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /2 [87] VG CSK /2 [87] VG CSK 3/8 x 4 4,800 3/8 x 6-1/4 7,200 3/8 x 4 5,400 3/8 x 6-1/4 7,500 Rigging Device Yoke XL ; 12 screws Specific Gravity Min Beam Width Fastener Designation Reference Rigging Capacity (Z) G in. [mm] in. lbs /2 [87] VG CSK /2 [87] VG CSK 3/8 x 4 7,400 3/8 x 6-1/4 7,800 3/8 x 4 7,600 3/8 x 6-1/4 7,800 Notes: 1. Reference rigging capacities (Z) listed are only valid for allowable stress design in USA. 2. Reference rigging capacities (Z) listed need to be factored with appropriate reduction factors (R AR ; R LS ; R D ) given on page Reference rigging capacities (Z) listed are valid for a minimum sling angle to the panel (β) of Reference rigging capacities (Z) listed are only valid with listed ASSY screws. 5. The resistance of ASSY screws can only be assured for a single use. New screws are to be used for each lift. 6. The right ASSY screw length should be chosen to penetrate glulam plies to the largest extent possible, refer to p The maximum installation torque of ASSY screws shall not exceed the fastener torsional strength given in Table 1. 17

18 SLING INSTALLATION Sling Angle Tabulated reference rigging capacities (Z) are valid for rigging scenarios with a minimum sling angle (β) measured between the sling and the panel surface of 60. For cases where the sling angle is less than 60, an appropriate reduction factor (R AR ) needs to be applied. Additionally, the angle (λ) measured between the vertical and the sling, must be smaller than 30 to avoid excessive forces in the slings. S λ β Did you know? If S is greater than L, then the angle (λ) measured between the vertical and the sling is smaller than 30. L Special attention to angles must be given for angled panel rigging scenarios. For cases where one of the sling angles (β) is less than 60, an appropriate reduction factor (R AR ) needs to be applied to the capacity of the anchors (Z ). The following figures demonstrate an example of a rigging scenario with a panel angled by 15. S β λ L 15 18

19 Load Spreading When using more than two anchors, it is important to ensure that uneven load sharing does not occur. Without an adequate load spreader/compensation system, only two slings may carry the entire load, with the remaining slings hanging slack. In such cases, a reduction factor R LS = 0.5 needs to be considered. When using load spreader/compensation devices as seen below, even load share may be assumed. For CLT wall panel rigging, load spreaders can be used to further stabilize the load while increasing the sling angle (β). 19

20 END AND EDGE DISTANCE REQUIREMENTS Certain end and edge distance requirements have to be followed when installing Yokes to avoid splitting of the wood. Rigging devices should always be placed in symmetrical manner and in line (parallel) with the sling to promote even load sharing, while stabilizing the rigged material. Floor/Roof CLT Panel Rigging Provided requirements are a minimum and can be adjusted to specific site conditions. Anchors should be placed in accordance with allowable panel span in order to avoid excessive bending during lifting. 10-5/8 5-7/8 5-7/8 5-7/8 10-5/8 10-5/8 20

21 Wall CLT Panel Rigging For wall panel rigging in the narrow edge of the CLT the specifically designed Yoke XL (which uses smaller diameter fasteners) can be used. The reduced edge distance requirements below are a minimum, and apply to the Yoke XL only. 10-5/8 1-1/4 Glulam Beam Rigging When rigging glulam beams, the minimum end and edge distances are as follows: 10-5/8 10-5/8 3-5/16 2 Did you know? For repetitive lifts, a jig can be made to assure correct and efficient placement and even load share between the rigging hardware. 21

22 RECOMMENDED WORKFLOW The high level of prefabrication of mass timber building elements means that installation can be fast and efficient. Trucks are generally loaded in the correct sequence, meaning every panel element is delivered in place just in time. Therefore, it is crucial to keep up with a similarly efficient material workflow on site by steadily unloading truck beds and maximizing crane efficiency. It is usually recommended to use 4 sets of rigging hardware: while one set is installed on the panel on the truck bed (1), one is used for rigging a panel into place (2), another one is demounted from a readily installed panel (3), and the other set is transported back to the truck (4). With this circular workflow, delays on site can be minimized

23 CHECK LIST Material Weight: Is the material weight given (and is it correct)? Is the load factored up with correct adjustment factors? Dynamic acceleration factor (refer to respective standards) Optional safety factor Rigging Hardware: Is the capacity per anchor enough to lift the material? Is the angle (β) measured between the sling and the panel surface greater than 60? Is the angle (λ) measured between the vertical and the sling smaller than 30? Is the load rating of the slings greater than the angled force component? Is the correct fastener length used? Is the fastener new? Fasteners should only be used for one rigging application! Device Placement: Are end and edge distance requirements satisfied? Is even load sharing between the anchors assured? Is the center of gravity below the upper pick point of the crane? Rigging: Is all rigging hardware installed properly and double checked? Is the surrounding area clear and safe? Is the rigging element secured with tag lines? Does the current wind condition allow for safe rigging? Is the intended location prepared to accept the rigged material? Releasing: Is the panel fully secured with no load on the rigging slings anymore? Are used fasteners disposed of correctly to avoid reuse for rigging applications? 23

24 We strive to provide sustainable, high-quality masstimber and heavy-timber connection solutions to a rapidly evolving and thriving industry. We drive innovation through certified research and development and contribute our part to the education of young talent and experienced professionals. Please contact our team to arrange a free Remote Learning Session on Modern Timber Connection Systems at: education@myticon.com For all our technical resources, visit: Contact Us info@myticon.com Technical Support support@myticon.com MyTiCon Timber Connectors , 124th Street, Surrey, BC, Canada, V3W 9G2 WOOD you like to CONNECT?