Dutchland, Inc. is a precast concrete manufacturer that specializes in post-tensioned concrete structures using certified personnel. They produce tanks for water storage and wastewater treatment that are virtually maintenance-free for decades, requiring minimal site space and less construction time compared to cast-in-place. All structures are warranted for 10 years and can be constructed above or below ground in various configurations to meet specific needs.
Pārdomas par daudzdzīvokļu dzīvojamo ēku ekspluatācijas uzraudzību
Aija Meļņikova Rīgas domes Pilsētas attīstības departamenta Būvniecības kontroles pārvalde
2021.gada 25.oktobris
Sērijveida daudzdzīvokļu māju balkoni un lodžijas /Aivars Graikstis, Latvijas Namu pārvaldītāju un apsaimniekotāju asociācija, SIA "Baložu komunālā saimniecība"
2022.gada 28.februāris
Ēku elektroinstalācija. Kļūdas un ieteikumi.
Uldis Dērics, Latvijas Elektroenerģētiķu un Energobūvnieku asociācija SIA “Pirtel”
Video: https://www.facebook.com/dzivosiltak/videos/2547315372021766/
2019.gada 17.oktobris, Rīga
seminārs "Ēku iekšējo inženiertīklu atjaunošana"
Siltumsūkņu priekšrocības, veidi, iespējas un izmantošanas ierobežojumi/Stefan Westberg (nibe.lv)
vebinārs "Energoefektivitāte un AER uzņēmumos. Normatīvais regulējums un tehnoloģijas"
Video: https://youtu.be/4LOupeyn9LE
2022.gada 2.novembris
Informācija par Atveseļošanas fonda atbalsta programmu ir šeit https://likumi.lv/ta/id/336032
#ESfondi | #NextGenerationEU | #energoefektivitāte | #atbalstsuzņēmējiem |
Vēsturisku ēku saglabāšana un energoefektivitātes uzlabošanas iespējas
Katrīna Kukaine, Valsts kultūras pieminekļu inspekcija
Video: https://youtu.be/xVtpDhuhKmU
2017.gada 14.februāris, Rīga
Siltumsūkņu priekšrocības, veidi, iespējas un izmantošanas ierobežojumi/Eduards Keziks (Robert Bosch SIA)
vebinārs "Energoefektivitāte un AER uzņēmumos. Normatīvais regulējums un tehnoloģijas"
Video: https://youtu.be/4LOupeyn9LE
2022.gada 2.novembris
Informācija par Atveseļošanas fonda atbalsta programmu ir šeit https://likumi.lv/ta/id/336032
#ESfondi | #NextGenerationEU | #energoefektivitāte | #atbalstsuzņēmējiem |
Pārdomas par daudzdzīvokļu dzīvojamo ēku ekspluatācijas uzraudzību
Aija Meļņikova Rīgas domes Pilsētas attīstības departamenta Būvniecības kontroles pārvalde
2021.gada 25.oktobris
Sērijveida daudzdzīvokļu māju balkoni un lodžijas /Aivars Graikstis, Latvijas Namu pārvaldītāju un apsaimniekotāju asociācija, SIA "Baložu komunālā saimniecība"
2022.gada 28.februāris
Ēku elektroinstalācija. Kļūdas un ieteikumi.
Uldis Dērics, Latvijas Elektroenerģētiķu un Energobūvnieku asociācija SIA “Pirtel”
Video: https://www.facebook.com/dzivosiltak/videos/2547315372021766/
2019.gada 17.oktobris, Rīga
seminārs "Ēku iekšējo inženiertīklu atjaunošana"
Siltumsūkņu priekšrocības, veidi, iespējas un izmantošanas ierobežojumi/Stefan Westberg (nibe.lv)
vebinārs "Energoefektivitāte un AER uzņēmumos. Normatīvais regulējums un tehnoloģijas"
Video: https://youtu.be/4LOupeyn9LE
2022.gada 2.novembris
Informācija par Atveseļošanas fonda atbalsta programmu ir šeit https://likumi.lv/ta/id/336032
#ESfondi | #NextGenerationEU | #energoefektivitāte | #atbalstsuzņēmējiem |
Vēsturisku ēku saglabāšana un energoefektivitātes uzlabošanas iespējas
Katrīna Kukaine, Valsts kultūras pieminekļu inspekcija
Video: https://youtu.be/xVtpDhuhKmU
2017.gada 14.februāris, Rīga
Siltumsūkņu priekšrocības, veidi, iespējas un izmantošanas ierobežojumi/Eduards Keziks (Robert Bosch SIA)
vebinārs "Energoefektivitāte un AER uzņēmumos. Normatīvais regulējums un tehnoloģijas"
Video: https://youtu.be/4LOupeyn9LE
2022.gada 2.novembris
Informācija par Atveseļošanas fonda atbalsta programmu ir šeit https://likumi.lv/ta/id/336032
#ESfondi | #NextGenerationEU | #energoefektivitāte | #atbalstsuzņēmējiem |
Aerocon bricks are named as Autoclaved Aerated concrete (AAC) blocks made with a mixture of cement, fly ash, lime, an aerated agent, and water. Aerocon bricks are available in different sizes and varied thickness as follows.
interesting civil engineering topics
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Soil nailing is a technique used to reinforce and strengthen existing ground.Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down.It is an effective and economical method of constructing retaining wall for excavation support, support of hill cuts, bridge abutments and high ways.This process is effective in cohesive soil, broken rock, shale or fixed face conditions.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. • Dutchland, Inc. is a Precast/Prestressed
Concrete Institute (PCI) manufacturing
facility with American Concrete Institute
(ACI) certified Quality Control personnel
and Post-tensioning Institute (PTI) certified
installation personnel.
• Dutchland, Inc. specializes in many types of
precast post-tensioned concrete structures,
including circular, rectangular, and
elliptical structures.
• Dutchland, Inc. surveys all customers. All
customers surveyed indicated they would
contract with Dutchland, Inc. again.
• A no hassle ten-year structural warranty
covers the base, wall, roof systems, and tank
appurtenances of all post-tensioned tank
structures manufactured and installed by
Dutchland, Inc.
C E R T I F I E D P L A N T
3. Typical Installation
• Precast concrete elements are manufactured at a
PCI certified facility.
• Precast concrete elements are set on a cast-in-place
slab within a receiving keyway. Alignment is
checked with laser equipment.
• Temporary props are attached to the inner face
of the tank and secured to the base. Top-of-wall
brackets are placed at the panel joints insure panel
alignment.
• Tendons are threaded into the ducts.
• Walkways are set into place and partial tension is
applied.
• High strength grout is pumped into the joint
cavities.
• Final tensioning is applied.
• Base to wall sealants are applied.
• Tanks are checked to insure water-tightness.
Tank Applications
Precast post-tensioned concrete rectangular tanks
manufactured by Dutchland, Inc. are produced for
a variety of wastewater treatment process systems,
including sequencing batch reactors, extended
aeration, oxidation ditches, and membrane
bio-reactors. Typical potable water applications
include potable water storage, clearwells, and fire
protection tanks.
4. Structural Superiority
• Exterior and interior walls are always designed for
full water load on one side and empty on the other
side, unless otherwise specified. Tanks are designed
in conformance with ACI 318 and ACI 350.
• Precast post-tensioned tanks can be constructed
above ground (with the base slab below frost),
completely buried, or partially out-of-grade. Tanks
can also be designed to withstand differential backfill.
• Post-tensioned walkways provide a structural
upper fixed beam capping all walls and also provide
for superior accessibility. Without the need for
conventional cantilever design requirements, the wall
thickness is typically reduced.
• The footprint is generally much smaller due to
thinner walls and common-wall construction.
• All tank designs include 5000 PSI 28-day concrete
compressive strength.
Durability
• Wall panels are solid concrete (not built-in
gunite layers).
• Walls are cast horizontally in steel forms, providing
an extraordinarily dense and impermeable member.
Spalling and surface defects that are typically
associated with cast-in-place concrete is virtually
eliminated.
• Maintenance associated with steel tankage
(dewatering, sandblasting, repainting) is not
required.
• Exterior coatings are not required for surface
protection. Penetrating stains or decorative coatings
are available upon request.
• Concrete is put into compression for the life of the
structure.
5. CAST-IN-PLACE POST-TENSIONED
BASE SLAB
Post-tensioned base slabs are cast on-site.
Post-tensioned base slabs are in compression,
eliminating cracking.
• Reinforcement is placed within the base form.
• Tendons are placed within the form work.
• Keyway forms are placed and checked for
elevation and distance from center of the tank.
• Concrete is placed in a continuous monolithic
pour and steel trowel finished.
• The forms are removed and the base is covered or
sprinkled with water to achieve proper curing.
• Initial post-tensioning is applied after approximately
20 hours by Post-Tensioning Institute (PTI) certified
personnel.
• Final post-tensioning is applied upon concrete
achieving 75% of design strength.
• Tendon tails are removed and the anchor pockets
are cleaned, primed and filled with grout.
TANK WALL PANEL INSTALLATION
Conforming to the AWWA D-115 standard, all
production and installation procedures insure a
high quality tank system.
• Bearing pads and shims are placed in the keyways.
• Wall panels are lifted by a crane and set into the
keyway. Alignment is checked with laser equipment.
• Temporary props are attached to the inner face of the
wall panels and secured to the base.
• Tendon duct extensions are placed and sealed between
the wall panels.
• Tendons are threaded into the ducts.
• Vertical joints are formed. Grout is pumped into the
joint cavity and consolidated.
• Circumferential post-tensioning is administered by PTI
certified personnel.
• Expanding grout is pumped into the tendon ducts to
permanently encase the tendons and create a bond to
the tank walls.
• A sealant is used to seal the base to wall connection.
• The tank is held in constant compression by the
internal post-tensioned tendons.
6. ROOF AND SUPPORT SYSTEM
INSTALLATION
Multiple tank cover designs are available,
including precast concrete sloped roof
systems, precast concrete domes, and
aluminum geodesic domes.
• Precast concrete sections are lifted into place.
• Tendons are inserted into the tendon ducts.
• Circumferential post-tensioning is
administered by PTI certified personnel.
• Excess tendons are removed, capped, and
sealed off.
• Polyurethane elastomeric sealant and/or
closed cell foam gasket are applied at the
roof joints to insure water-tightness.
THE FINISHED PRODUCT
The finished product consists of a precast
post-tensioned concrete tank designed for
longevity with little or no maintenance.
• All walls are cast horizontally in steel
forms, providing an extraordinarily dense and
impermeable high strength concrete exterior.
The potential for spalling, typically associated
with shot-crete or cast-in-place concrete, is
virtually eliminated.
• Tanks manufactured by Dutchland, Inc. do not
require a steel diaphragm for water-tightness.
• No repainting or shot-crete maintenance is
required.
• Exterior coatings are not required. Penetrating
stain or decorative coatings are available upon
request.
• The result is a no compromise, cost competitive
tank manufactured and constructed in
accordance with AWWA D-115 standard.
7.
8. CONSTRUCTION
• Elliptical tanks are constructed with methods similar to precast post-tensioned rectangular and circular tanks.
• Elliptical tanks include base, walls and walkways.
BENEFITS
• Rounded tank ends are easier to fabricate by utilizing precast rather than cast-in-place concrete.
• Less time is generally required in construction for precast concrete than cast-in-place concrete.
• Various configurations are available to meet the requirements of specific equipment suppliers, including
but not limited to, Kruger, Siemens and Ovivo.
• Dutchland, Inc. typically works directly with the equipment manufacturer during the design / submittal
phase to ensure compatibility, resulting in better coordination.
9.
10. • Utilize superior construction methods, and have a
10-year non pro-rated warranty.
• Easily designed for a variety of uses, including water
storage, wastewater treatment, storm overflow,
effluent storage, and many other purposes.
• Virtually maintenance free for decades and designed
to stay in continuous service, eliminating costly
maintenance and down time.
• Constructed above ground (with the base slab below
frost), completely buried, or partially out-of-grade.
• Minimal site space required, resulting in less site work.
• Can be constructed against existing structures
or buildings.
• All precast elements manufactured in a climate
controlled production facility rather than on site.
• Less time required compared to conventional
cast-in-place.
12. 160 Rt. 41 • PO Box 549 • Gap, PA 17527 • (P) 717.442.8282 • (F) 717.442.9330 • www.dutchlandinc.com
Dutchland, Inc. also specializes
in designing and building
extended aeration wastewater
treatment plants. BNR
(Biological Nutrient Removal)
for nitrogen and phosphorus
designs incorporate MLE
concepts. Tertiary treatment for
low BOD/TSS is optional.
Additional information is
available upon request for
Custom-Designed Wastewater
Treatment Plants.
Rev.8/14