Concrete crack analysis report
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This report analyzes cracks found in the weir box walls of structures 104, 04, and 05. Hairline cracks were observed and determined to likely be caused by thermal contraction/expansion or subgrade settlement. Applied stresses from structural loads and hydrostatic pressure could also be contributing factors. The vertical cracks are consistent with shrinkage and temperature effects. The contractor is advised to monitor the cracks for changes and use an approved repair procedure if the cracks remain stable and under 1/4" wide. Reinforcement and concrete mix design revisions may be needed if cracks widen over 1/4" with vertical displacement.
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The document discusses cracks in concrete structures. It begins by classifying cracks as structural or non-structural and further classifying cracks by width. Common causes of cracking are then outlined, including plastic shrinkage, drying shrinkage, thermal stresses, chemical reactions, weathering, poor construction practices, and design errors. Methods for evaluating cracks, selecting repair procedures, and repair methods such as epoxy injection, routing and sealing, reinforcing, and cement grouting are also summarized.
IRJET- The Rehabilitation Techniques for Irwin Bridge
This document discusses rehabilitation techniques for the Irwin Bridge, a masonry arch bridge in Sangli, India built in 1929. It has conducted a condition survey to detect damages and proposes various techniques to address issues found with the bridge's piers, abutments, deck slabs, river banks, and galleries. Rehabilitation techniques discussed include cellular foamed cement grouting for piers, replacing damaged stones and adding concrete mortar in abutments, removing unsound concrete and adding new patches in deck slabs, installing guide banks and other river training structures, and reconstructing severely damaged galleries. The conclusion emphasizes the importance of regular maintenance and using conservation-focused repair techniques to successfully rehabilitate historic masonry bridges
Precast Concrete Specifications.doc
This document provides specifications for structural precast concrete used in construction projects. It includes three sections: an introduction that describes the purpose and use of the specification document, a general section that defines the scope of work and provides other general requirements, and an action submittals section that outlines the submittal requirements for shop drawings, design mixtures, and other preconstruction information. The specification is intended to serve as a template for developing project-specific specifications for precast concrete work by editing it to suit the conditions of the given project.
Type of structural joints
The document discusses different types of joints used in concrete structures including construction joints, expansion joints, contraction joints, and seismic joints. It provides definitions and discusses the purpose, formation, location, and detailing of each joint type. Construction joints allow concrete to be placed continuously and provide limits for placements. Expansion joints allow for movement in the structure. Contraction joints create planes of weakness to control cracking. Seismic joints separate portions of buildings to improve performance during earthquakes.
Deep excavation report
This document discusses different types of retaining walls and their construction methods. It describes gravity walls, sheet pile walls, cantilever walls, and anchored walls. It also discusses soil nailing, diaphragm walls, and bracing used for deep excavations. Key details include the steps for constructing retaining walls, advantages of concrete walls, advantages and disadvantages of CFA piles, applications and materials used for soil nailing, and the sequence of work for installing diaphragm walls. A case study describes an L-shaped cantilever retaining wall project in New Cairo City.
Retrofitting of Masonry Buildings
This document discusses retrofitting techniques for masonry buildings to strengthen them against earthquakes. It describes various structural and member retrofitting methods such as adding shear walls, jacketing beams and columns. Failure mechanisms of masonry buildings are outlined, including out-of-plane failure, in-plane failure and connection failure. Repair techniques like jacketing are explained. The document also references Indian codes for earthquake design and concludes that retrofitting is an effective technology for protecting structures, but expertise is still needed at the basic level.
207.2 r 95 - effect on restraint, volume change and reinforce
This document discusses the effects of heat generation and volume change on the design and cracking of reinforced mass concrete structures. It focuses on how restraint can cause or prevent cracking and how controlling placement temperature, concrete strength, and cement type and fineness can influence volume change. Formulas are presented for determining reinforcement needs to control crack size and spacing under different conditions of restraint and volume change.
IRJET- Behavioral Study of Scaled GFRG Wall Panel Containing Opening Subjecte...
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- GFRG walls are a lightweight and energy efficient building material. The study tests 1m x 1m GFRG wall panels with and without a 0.15m x 0.4m central opening under repeated lateral loads.
- The panel without an opening achieved a peak load of 102kN, while visible cracks began appearing at 84kN. The panel with a central opening showed similar failure behavior to the solid panel under lateral loading.
Unit 5.pptx
This document discusses techniques for repairing, rehabilitating, and retrofitting structures. It covers strengthening structural elements, repairing structures damaged by corrosion, fire, leakage, or earthquakes. Specific techniques addressed include repairing fire-damaged concrete, sealing leaks, repairing cracks, jacketing structural members, and dry packing. The document also covers engineered demolition methods like mechanical demolition, implosion, and deconstruction for taking down structures.
Study_of_Cracks_in_Buildings.pdf
This document summarizes a study on cracks in buildings. It discusses the main causes of cracks such as moisture movement, thermal movement, elastic deformations, creep, and foundation settlement. It classifies cracks as structural or non-structural and describes various types of cracks that can occur in walls, partitions and other building elements. Prevention methods are provided for shrinkage/expansion cracks, thermal cracks, cracks due to elastic deformations and creep. Design and construction practices are recommended to minimize cracking and improve durability of structures.
Shuttering (Formwork)
Shuttering in concrete construction is used as a mould for a structure in which fresh concrete is poured to harden subsequently curing
It is a part of formwork, or you may call it as derivative of formwork. Shuttering is a vertical temporary arrangement which is arranged to bring concrete in a desired shape. or Formwork which supports vertical arrangement is known as shuttering.
CRACKS AND PREVENTIVE MEASURES
Cracks in concrete can be structural and reduce safety, or non-structural and caused by factors like moisture or temperature changes. Cracks are categorized by their width and can be caused by things like shrinkage, foundation issues, or earthquakes. The document discusses various methods for repairing cracks in concrete, such as epoxy injection, routing and sealing, stitching, drilling and plugging, or gravity filling cracks with low viscosity resins.
TECH_SEMINAR_sachith_gowda[1].pptx
This document discusses design aspects for making structures resistant to terrorist attacks. The objectives of blast-resistant design are to reduce injuries, facilitate rescue efforts, expedite repairs, prevent progressive collapse, and accelerate returning to full operations. Explosions from vehicle or package bombs are major threats. Design principles include determining the threat level based on bomb size and standoff distance. Specific structural elements like floors, columns, transfer girders, glazing, and shear walls can be strengthened to improve blast resistance. Maintaining standoff distance and hardening vulnerable interior spaces are also discussed.
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IRJET- The Rehabilitation Techniques for Irwin Bridge
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原版制作(Humboldt毕业证书)柏林大学毕业证学位证一模一样
原件一模一样【微信：bwp0011】《(Humboldt毕业证书)柏林大学毕业证学位证》【微信：bwp0011】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
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8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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Call For Paper -3rd International Conference on Artificial Intelligence Advan...
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3rd International Conference on Artificial Intelligence Advances (AIAD 2024)
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一比一原版(USF毕业证)旧金山大学毕业证如何办理
原件一模一样【微信：95270640】【旧金山大学毕业证USF学位证成绩单】【微信：95270640】（留信学历认证永久存档查询）采用学校原版纸张、特殊工艺完全按照原版一比一制作（包括：隐形水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠，文字图案浮雕，激光镭射，紫外荧光，温感，复印防伪）行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备，十五年致力于帮助留学生解决难题，业务范围有加拿大、英国、澳洲、韩国、美国、新加坡，新西兰等学历材料，包您满意。
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留信网认证的作用:
1:该专业认证可证明留学生真实身份【微信：95270640】
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
办理旧金山大学毕业证毕业证学位证USF学位证【微信：95270640 】外观非常精致，由特殊纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理旧金山大学毕业证USF学位证毕业证学位证【微信：95270640 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
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一比一原版(uoft毕业证书)加拿大多伦多大学毕业证如何办理
原版一模一样【微信：741003700 】【(uoft毕业证书)加拿大多伦多大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(uoft毕业证书)加拿大多伦多大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
一比一原版(osu毕业证书)美国俄勒冈州立大学毕业证如何办理
原版一模一样【微信：741003700 】【(osu毕业证书)美国俄勒冈州立大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】外观非常简单，由纸质材料制成，上面印有校徽、校名、毕业生姓名、专业等信息。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
校名:学校英文全称
授予学位：本部分将注明获得的具体学位名称。
毕业生姓名：这是最重要的信息之一，标志着该证书是由特定人员获得的。
颁发日期：这是毕业正式生效的时间，也代表着毕业生学业的结束。
其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
综上所述，办理(osu毕业证书)美国俄勒冈州立大学毕业证【微信：741003700 】是证明身份和学历的高价值文件。外观简单庄重，格式统一，包括重要的个人信息和发布日期。对持有人来说，妥善保管是非常重要的。
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Concrete crack analysis report
- 1. Concrete Crack Analysis Report Over view Weir Box Wall-104” Pipe Penetration Section under puddle flange section has crack. As it is repeated in Weir Box #04 and #05 so CHEC Construction referred engineering for detailed Analysis for cause finding study. Evaluation is based on site pictures and drawing #VB-985885-001 provided us for analysis, the subject crack can be classified as dormant hair line crack. This crack remains unchanged i.e. no change in depth and width both. Causes: (1)Thermal Contraction/Expansion: Due to temperature changes in inner and outside of wall. (2)SubgradeSettlement: Changes in soil moisture contents (3)Differential Bearing Capacity: Harder soils under partof the foundation can causestresses as the weir box wall “settles in” (4) Applied Stresses: Forces caused by structureload, hydrostatic pressureof Puddlesection operated on subjectwall section. Tremendous forces can build up inside the wall due to applied stresses. When the forces exceed the strength of material, crack will develop. This causenormally leave a “signature” in the type of crack it creates. These cracks are of little concern by themselves in nature until concrete maintain its full strength. Type and location of crack itself define its nature. The vertical type of crack shown in pictures attached are caused by shrinkageand temperature. These are mostly typically fromcorner of structurecausing stress to down side or any other opening.
- 2. These reentrant cracks arevery common for the above described situation un less it shows significantlateral displacement. Suggestions for Correction: Contractor can employ severalmethods of reducing the occurrence. The subject crack is to keep under observation for any lateral displacement for certain period. If there is no significantdevelopment and width of crack is not exceeded by ¼” in width, then useapproved crack repairing procedure#CHEC-JIGCC61K-30-GE-MST- 0032 is acceptable and recommended for implementation. In second scenario if contractor finds width of crack is exceeding ¼” in width along with lateral displacement in vertical direction, then contractor is recommended to reviseconcrete mix design and rebar reinforcement details for reconsiderations.