By Task Committee on Anchorage Design of the Petrochemical Committee of the Energy Division of ASCE
Anchorage layout in Petrochemical amenities offers ideas for the layout, fabrication, and deploy of anchorages into concrete for petrochemical amenities. analyzing the purpose of creating codes as utilized to petroleum or chemical installations, this file bargains reasonable suggestions on fabrics, layout info, install, and service. It summarizes the kingdom of the perform for the layout of cast-in-place anchor rods, welded anchors, and post-installed anchors. An appendix offers 3 instance designs for column pedestal anchors, octagonal pedestal anchors, and shear lug pipe sections. subject matters comprise: review of layout tools for rigidity and shear move with reinforcement and different embedments as utilized in the petrochemical undefined; anchorage fabrics and houses; cast-in-place anchors; post-installed anchors; steered set up and service. This file could be worthwhile to petrochemical or structural engineers, in addition to by means of managers of businesses working petrochemical amenities. it is going to even be invaluable for structural engineers in different industries who anchor structural metal and kit to concrete foundations and constructions
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Additional info for Anchorage Design for Petrochemical Facilities
1 Exposure to Low Temperatures When an anchorage is exposed to extreme low temperatures, the main design concern is that the anchor material will become brittle and fail, either prematurely or at a strength level that is less than its design load. In order to mitigate this concern, a sample of the anchor material should be tested at low temperature to measure impact properties. This is typically accomplished using a Charpy V-Notch Test. Testing requirements can be found in ASTM A370. For extreme low temperature exposure, ASTM A320/A320M L7 material is recommended.
1 FOR VARIOUS RECOMMENDATIONS ON THE MAXIMUM DISTANCE BETWEEN ANCHOR AND ANCHOR REINFORCEMENT. 4) DOWELS AND TIES ON THE INSIDE OF THE ANCHOR CIRCLE ARE ONLY REQUIRED IF DOWELS AND TIES ON THE OUTSIDE OF THE ANCHOR CIRCLE ARE NOT SUFFICIENT FOR REINFORCING THE CONCRETE FOR ANCHOR LOADS. 7: Reinforcement for Resisting Anchor Tension in Octagonal Pedestals ANCHORAGE DESIGN FOR PETROCHEMICAL FACILITIES 43 b. In the previous edition of this report, it is stated that to be considered effective, the distance of the reinforcement from the edge of the anchor head should not exceed the lesser of one-fifth hef or 6 in.
1 Recommended Location of Anchor Reinforcement for Tension There is currently no available test data that can be used to strongly recommend the location of anchor reinforcement in typical pedestals. Without such data, it is prudent and good practice to place anchor reinforcement as close as practicable to the anchor in order to prevent any unknown failure mechanism. The following discussion provides guidance on acceptable spacing limits. a. Cannon et al. (1981) indicated that for hairpin reinforcement to effectively intercept the potential failure planes, each leg should be located within hef/3 from the edge of an anchor head, where hef is the effective embedment depth of the anchor.