1. Full title: Discussion of “Use of SPT Blow Counts to Estimate Shear Strength Properties of Soils: Energy Balance Approach” by H. Hettiarachchi and T. Brown
Authors: Fernando Schnaid, Edgar Odebrecht, and Bianca O. Lobo
Publisher: ASCE
Year Published: J. Geotech. and Geoenvir. Engrg. Volume 136, Issue 11, pp. 1585-1587
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2. Full title: Closure to “Use of SPT Blow Counts to Estimate Shear Strength Properties of Soils: Energy Balance Approach” by H. Hettiarachchi and T. Brown
Authors: Hiroshan Hettiarachchi
Publisher: ASCE
Year Published: J. Geotech. and Geoenvir. Engrg. Volume 136, Issue 11, pp. 1587-1587 (November 2010)
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Posted by: ir_71 - 01-14-2011, 06:37 AM - Forum: ISO
- Replies (2)
ANSI/API RP-17A-2006(ISO 13628-1) Design and Operation of Subsea Production Systems—General Requirements and Recommendations
Author: ISO | Size: 4.21 MB | Format:PDF | Publisher: ANSI. API, ISO | Year: 2006 | pages: 242
This part of ISO 13628 provides general requirements and overall recommendations for development of complete subsea production systems, from the design phase to decommissioning and abandonment. This part of ISO 13628 is intended as an umbrella document to govern other parts of ISO 13628 dealing with more detailed requirements for the subsystems which typically form part of a subsea production system. However, in some areas (e.g. system design, structures, manifolds, lifting devices, and colour and marking) more detailed requirements are included herein, as these subjects are not covered in a subsystem standard. The complete subsea production system comprises several subsystems necessary to produce hydrocarbons from one or more subsea wells and transfer them to a given processing facility located offshore (fixed, floating or subsea) or onshore, or to inject water/gas through subsea wells. This part of ISO 13628 and its related subsystem standards apply as far as the interface limits described in Clause 4. Specialized equipment, such as split trees and trees and manifolds in atmospheric chambers, are not specifically discussed because of their limited use. However, the information presented is applicable to those types of equipment. If requirements as stated in this part of ISO 13628 are in conflict with, or are inconsistent with, requirements as stated in the relevant complementary parts of ISO 13628, then the specific requirements in the complementary parts take precedence.
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API RP 934-A 2010 Materials and Fabrication of 2 1/4Cr-1Mo, 2 1/4Cr-1Mo-1/4V, 3Cr-1Mo, and 3Cr-1Mo-1/4V Steel Heavy Wall Pressure Vessels for High-temperature, High-pressure Hydrogen Service
Author: API | Size: 1.13 MB | Format:PDF | Publisher: API & ANSI | Year: 2010 | pages: 42
This recommended practice presents materials and fabrication requirements for new 2 1/4Cr and 3Cr steel heavy wall
pressure vessels for high-temperature, high-pressure hydrogen service. It applies to vessels that are designed,
fabricated, certified, and documented in accordance with ASME BPVC, Section VIII, Division 2, including Section 3.4,
Supplemental Requirements for Cr-Mo Steels and ASME Code Case 2151, as applicable. This document may also
be used as a resource when planning to modify an existing heavy wall pressure vessel.
A newer ASME BPVC, Section VIII, Division 3, is available and has higher design allowables, however it has much
stricter design rules (e.g. fatigue and fracture mechanics analyses required) and material testing requirements. It is
outside the scope of this document.
Materials covered by this recommended practice are conventional steels including standard 2-1/4Cr-1Mo and 3Cr-1Mo
steels, and advanced steels which include 2 1/4Cr-1Mo-1/4V, 3Cr-1Mo-1/4V-Ti-B, and 3Cr-1Mo-1/4V-Nb-Ca steels. This
document may be used as a reference document for the fabrication of vessels made of enhanced steels (steels with
mechanical properties increased by special heat treatments) at purchaser discretion. However, no attempt has been
made to cover specific requirements for the enhanced steels.
The interior surfaces of these heavy wall pressure vessels may have an austenitic stainless steel weld overlay lining
to provide additional corrosion resistance. A stainless clad lining using a roll-bonded or explosion-bonded layer on Cr-
Mo base metal may be acceptable, but is outside the scope of this document.
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API Spec.4F-2008 Specification for Drilling and Well Servicing Structures
Author: API | Size: 0.65 MB | Format:PDF | Publisher: API | Year: 2008 | pages: 56
This specification states requirements and gives recommendations for suitable steel structures for drilling and
well-servicing operations in the petroleum industry, provides a uniform method of rating the structures, and
provides two PSLs.
This specification is applicable to all new designs of all steel derricks, masts, guyed masts, substructures, and
crown blocks.
Annex A provides a number of standard Supplementary Requirements (SRs) which apply only if specified by the
purchaser.
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API 570-2009 Piping Inspection Code: In-service Inspection, Rating, Repair, and Alteration of Piping Systems
Author: API | Size: 1.15 MB | Format:PDF | Publisher: API | Year: 2009 | pages: 78
1.1 General Application
1.1.1 Coverage
API 570 covers inspection, rating, repair, and alteration procedures for metallic and fiberglass reinforced plastic (FRP)
piping systems and their associated pressure relieving devices that have been placed inservice.
1.1.2 Intent
The intent of this code is to specify the in-service inspection and condition-monitoring program that is needed to
determine the integrity of piping. That program should provide reasonably accurate and timely assessments to
determine if any changes in the condition of piping could possibly compromise continued safe operation. It is also the
intent of this code that owner-users shall respond to any inspection results that require corrective actions to assure
the continued safe operation of piping.
API 570 was developed for the petroleum refining and chemical process industries but may be used, where practical,
for any piping system. It is intended for use by organizations that maintain or have access to an authorized inspection
agency, a repair organization, and technically qualified piping engineers, inspectors, and examiners, all as defined in
Section 3.
1.1.3 Limitations
API 570 shall not be used as a substitute for the original construction requirements governing a piping system before
it is placed inservice; nor shall it be used in conflict with any prevailing regulatory requirements. If the requirements of
this code are more stringent than the regulatory requirements, then the requirements of this code shall govern.
1.2 Specific Applications
The term non metallics has a broad definition but in this code refers to the fiber reinforced plastic groups
encompassed by the generic acronyms FRP (fiberglass-reinforced plastic) and GRP (glass-reinforced plastic). The
extruded, generally homogenous nonmetallics, such as high and low-density polyethylene are excluded. Refer to API
574 for guidance on degradation and inspection issues associated with FRP piping.
1.2.1 Included Fluid Services
Except as provided in 1.2.2, API 570 applies to piping systems for process fluids, hydrocarbons, and similar
flammable or toxic fluid services, such as the following:
a) raw, intermediate, and finished petroleum products;
b) raw, intermediate, and finished chemical products;
c) catalyst lines;
d) hydrogen, natural gas, fuel gas, and flare systems;
e) sour water and hazardous waste streams above threshold limits, as defined by jurisdictional regulations
f) hazardous chemicals above threshold limits, as defined by jurisdictional regulations;
g) cryogenic fluids such as: LN2, LH2, LOX, and liquid air;
h) high-pressure gases greater than 150 psig such as: GHe, GH2, GOX, GN2, and HPA.
1.2.2 Optional Piping Systems and Fluid Services
The fluid services and classes of piping systems listed below are optional with regard to the requirements of API 570.
a) Fluid services that are optional include the following:
1) hazardous fluid services below threshold limits, as defined by jurisdictional regulations;
2) water (including fire protection systems), steam, steam-condensate, boiler feed water, and Category D fluid
services, as defined in ASME B31.3.
b) Other classes of piping systems that are optional are those that are exempted from the applicable process piping
construction code.
1.3 Fitness-For-Service and Risk-Based Inspection (RBI)
This inspection code recognizes Fitness-For-Service concepts for evaluating in-service damage of pressurecontaining
components. API 579 provides detailed assessment procedures for specific types of damage that are
referenced in this code. This inspection code recognizes RBI concepts for determining inspection intervals. API 580
provides guidelines for conducting a risk-based assessment.
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Author: Mr D Ramsbottom , HR Wallingford | Size: 9.54 MB | Format:PDF | Publisher: CONSTRUCTION INDUSTRY RESEARCH AND INFORMATION ASSOCIATION | Year: 1997 | pages: 189 | ISBN: unknown
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Construction Today Magazine November 2010
English | True PDF | 204 Pages | 55 MB
Construction Today is one tool executives can use to navigate trends in this fast-paced business. This must-read publication covers timely issues such as the profound affect construction spending has on the U.S. economy, managing volatile material costs, LEED design and construction, emerging technologies such as BIM and work force retention.
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I did not found any thread about 3d visualization so if anyone interested let me know.
Lets try to exchange experience about using NOVAPOINT, MX ROAD, C3D, 3DS MAX etc...
a few examples of my work:
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As a column experiences earthquake-induced lateral displacements
while supporting gravity loads, severe damage is observed in
regions subjected to large moments. These regions are commonly
referred to as plastic hinges and they experience large inelastic
curvatures. The inelastic curvatures in plastic hinges are typically
assumed to be constant over the plastic hinge length, lp, to simplify
the estimation of the tip displacement of a column. Therefore, if the
plastic hinge length is known, the tip displacement of a column can
easily be obtained by integrating curvatures, and vice versa. As
part of the research reported in this paper, the effects of axial load
and shear span-depth ratio (L/ h) on lp are evaluated experimentally.
Based on the experimental observations, a new analytical
approach that can be used to estimate lp is presented. Finally, the
research findings are synthesized into a simple expression that can
be used to estimate lp
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In recent revisions of the structural design codes in New Zealand,
a number of changes have been made to seismic design provisions.
One of the more significant revisions was the way in which the level
of detailing is determined for potential plastic hinges. Previously, the
level of detailing was based principally on the structural ductility
factor, which is broadly similar to the reduction factor R used in
U.S. practice. With the revision, the level of detailing is based on the
predicted magnitude of curvature that a plastic hinge is required to
sustain in the ultimate limit state. This paper explains why the
structural ductility factor does not give a reliable guide to the
deformation sustained in an individual plastic hinge. In addition,
based on test results of 37 beams, 25 columns, and 36 walls, design
curvature limits are proposed for different categories of plastic hinge.
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