As loads are usually better known than are resistances, the load effect typically has smaller variability than resistance i. Api rp 1fsc recommended practice for facilities systems. G2awsd22 this recommended practice is based on global industry best practices and serves as a guide for those who are. Api rp 2alrfd 1 st, 1993 api rp 2awsd 21 st, 2007 din 15018 1984 dnvrpc203 fatigue2016. Api 2alrfd and api 2a wsd and we are not sure which standard use. This paper is about the application of api rp2alrfd draft in the north sea. Lrfd steel design ohio department of transportation. The case study is intended for a 4 leggedjacket platform of. Here in this research, api rp2a wsd code and international standard organization iso 19902 lrfd based code are taken into consideration for the reliability. Planning, designing, and constructing tension leg platforms.
Api rp 2a 21st 2007 joint only strength of materials. Api has two standards for fixed offshore platforms. Api rp 2alrfd 2nd edition tentative title modified adoption of iso 19902, fixed steel offshore structures rp 2a 22nd api tg. American petroleum institute design study for api 4f transition from asd to lrfd phase 2final report 9 august 2016 stress engineering services, inc. Load resistance factor design lrfd and allowable stress. Api offshore structure standards rp 2 a and much more mangiavacchi 2005. American petroleum institute, recommended practice for planning, designing and constructing fixed offshore platforms load and resistance factor design, api rp 2alrfd, first edition, 1993 a. With our online resources, you can find api rp 2d 6th edition or just about any type of ebooks, for any. Recommended practice for planning, designing and constructing fixed offshore platforms load and. Rigging offshore offshore cranes api rp 2d operation. Dr jayakumar d mba pmtpgdcmt,mep,oilgas,power generation. Second edition of document asmeapi standard published in 2007 api 579 1asme ffs1. Api rp 2a american petroleum institute, 2005 api rp 2geo american petroleum institute, 2011 finite element methods programs such as abaqus, plaxis, etc.
This can be w calculated using either equation 82a for lrfd or equation 82b for asd from the aisc 14th edition manual. The lrfd bridge design manual contains mndot bridge office procedures for the design, evaluation and rehabilitation of bridges. For the purpose of the supplement to the 21st edition of api rp 2a, the draft iso provisions, in turn, have been used as a starting. Pdf as a part of structural integrity management system sims. Documents similar to api rp 2a lrfd offshore platform loading. Following methods are used for computations of pile capacity. Figure 1 shows probability density functions pdfs for load effect, q, and resistance, r.
Pdf structural integrity assessment of fixed offshore platforms. Application of api rp2alrfd to a north sea platform. The preliminary design of a fried steel platform for bps andrew field development had been performed to the 18th edition of api rp2a. Api rp 2a recommended practice for planning, designing. In the united states, the current state of the practice for designing mudmat foundations in undrained soils is to use the methods outlined. That 22nd edition is planned to be the last edition of api rp 2awsd. Api rp 2d operation and maintenance of offshore cranes cranes, like all pieces of heavy equipment, if not properly operated, inspected and maintained have a potential for causing major bodily injury or property damage. Planning, designing, and constructing fixed offshore platforms load and resistance factor design. In december 2014 the 7th edition of the standard for operation and maintenance of offshore cranes was released by api. Api offshore structure standards rp 2 a and much more. November 2014 planning, designing and constructing fixed offshore platforms working stress design, twentysecond edition. Figure 1 shows the probability density functions for the load effect, q, and the resistance, r.
It is an extension of the second edition, which addressed inservice inspection of mooring components for modus only. Special notes api publications necessarily address problems of a general nature. Run code check usingapi rp2a, iso 19902, norsok n004 preliminary foundation design using 3 codes compare the results ofcode check members and joints summarize the results. Api rp 2a lrfd code withdrawn api rp 2a lrfd code withdrawn. This specification has been developed as a consensus docu. Except where noted, the design provisions employ the lrfd methodology set forth by aashto. The design of an offshore platform usually requires the use of asme b31. As with all items of machinery, only trained, qualified, and authorized. As have all aisc specifications, this specification has been based upon past successful usage, advances in the state of knowledge, and changes in design practice. Table of content insert a table of content at any position of the report after the report is exported to word or pdf. Determine whether the connection is adequate considering tension only. Load effect refers to the load calculated to act on a. Several methods are used by apile for computations of pile capacity.
The second edition of api recommended practice 2alrfd has been amended as follows. Read load and resistance factor design lrfd for deep. Furthermore, some guidelines have been proposed in the api rp 2a. Pdf rp 2awsd recommended practice for planning, designing. This guide provides structural design criteria in load and resistance factor design lrfd format for a specific types of.
The platform was redesigned using lrfd, but using partial load factors applicable to. This recommended practice for planning, designing, and constructing tension leg platforms incorporates the many. Api recommended practice rp 2i provides guidelines for inspecting mooring components of mobile offshore drilling units modus and permanent floating installations. Api rp 2a, recommended practice for planning, designing and constructing fixed offshore platforms. This is the recommended practice for planning, designing and constructing fixed offshore platforms published by the american petrolium institute. First edition published in 2000 as api recommended practice api rp 579. Example problems published in 2009 api 579 2asme ffs2. Otc 17236 the new api rp 2a, 22nd edition tubular joint design practice d.
Conversely, once api rp 2a lrfd was officially issued, it was quickly adopted for use in the north sea uk sector. Api rp 2a lrfd 2nd edition tentative title modified adoption of iso 19902, fixed steel offshore structures rp 2a 22nd api tg. Api rp 1fsc recommended practice for facilities systems completion planning and execution, first edition. The iso drafting committee took, as a starting point for drafting, the relevant provisions from api rp 2a lrfd 1st edition similar to api rp 2a wsd 20th edition because iso is in lrfd format. Design study for api 4f transition from asd to lrfd. Api rp 2awsd, 21st edition, recommended practice for planning, designing and constructing fixed offshore platforms working stress design page 37, table 4, key, replace. Working stress design, american petroleum institute, washington dc 3 api rp 2geo, geotechnical and foundation design considerations, ansiapi recommended practice 2geo, american petroleum institute, washington dc. If the return period exceeds 10,000 years, it can be appropriate to combine the. Lrfd castinplace cip slab span design example county. Care must be taken in all facets of crane operation.
Norsok standards, it was decided to include api rp 2a lrfd published in 1993 and. Recommended practice for planning, designing and constructing. Api recommended practice for planning, designing, and. The first difference between asd and lrfd, historically, has been that the old allowable stress design compared actual and allowable stresses while lrfd compares required strength to actual strengths. Apile analysis of the axial capacity of driven piles. Weaver works in development of engineering software tools for fluid dynamics, heat transfer, and fluidstructure in. It demonstrates that improvements in reliability offered by api rp2a lrfd can be december of a load resistance factor design version of api rp2a ref i. Api 2a lrfd and api 2a wsd and we are not sure which standard use. Deck is 46 ft wide with a 15 degree skew roadway is 44 ft wide. Apile is used to compute the axial capacity, as a function of depth, of a driven pile in clay, sand, or mixedsoil profiles.
Api rp 1fsc recommended practice for facilities systems completion planning and execution, first edition api on. Api offshore structure standards set product codes. Api rp 2d 7th edition revisionapi training thailand tos. You will be glad to know that right now api rp 2d 6th edition pdf is available on our online library. Federal highway administration fhwa revised lambda method.
The american petroleum institute api rp2alrfd draft recommended practice for planning, designing and constructing fixed offshore platforms load and resistance factor design is soon to be adopted by api for the design of fixed offshore steel platforms, and will be available for use worldwide. The manual files are not currently available in an ada accessible format. I have a query about current status of the api code, api rp 2a lrfd recommended practice on planning, designing, and constructing fixed offshore platforms load and resistance factor design. The shoulder on a bridge may continue at the adjacent lane cross slope or, if better drainage is desired, may be 0. Edition based on otc 23558, insights into using the 22. Lrfd method is to separate uncertainties in loading from uncertainties in resistance and to assure a prescribed margin of safety.
Federal highway administration fhwa, and the iv revised lambda method. The aisc load and resistance factor design lrfd specification for structural steel buildings is based on reliability theory. Rp 2awsd recommended practice for planning, designing and constructing. Appendix l proposed changes to section 5 of the aashto. This paper summarizes the updating of api rp 2a recommended practice for planning, designing and constructing fixed offshore platforms working stress design api rp 2awsd 21st edition with supplements 1, 2, and 3, to a 22nd edition. Screen shots of the mast and derrick systems used for the api 4f design study y z x y z x x z y rig 1 offshore mast rig 2. December 2017 lrfd bridge design 23 cross slopes on bridges 1 the cross slope on bridge traffic lanes is the same as the approaching roadway lanes, normally 0. Tension member bolt connections page 2 of 9 example 1.
1229 971 1573 437 709 69 214 631 1391 209 1288 959 901 467 354 279 437 49 1429 653 1127 1229 861 952 61 792 1432 1353 827 240 278 1099 563 1432 205 1038