The design and construction of electrical equipment for elevators and escalators presents complex requirements in the application of industrial control equipment and elevator equipment. With the need to have identical Canadian and U.S. requirements for this type of equipment, the applicable portions of CSA C22.2 No. 14 and UL 508 were reviewed and adapted to elevator equipment.
Highlights of B44.1:
Provides guidance to reduce the risk of injury and potential damage to property from fire and electrical shock
Harmonized standard combining applicable portions from CSA C22.2 No. 14 and UL 508 adapted for elevator equipment
Harmonized guidelines enable manufacturers to have their products certified by an approved testing laboratory in Canada or the United States and to have the certification ratified for acceptance in either country
Indented to reduce the risk of injury to persons and damage to property from fire and electrical shock
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Posted by: civilfafa - 05-04-2024, 12:25 AM - Forum: Concrete
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Guide to concrete construction 2nd Edi
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Concrete remains a fundamental basis for the Australian construction industry. It provides a number of
benefits – social, economic and environmental – that means it is a sustainable material.
This edition of Guide to Concrete Construction represents a major review of the volume. The contents
were last reviewed in 2002 and much has changed in the composition and specification of concrete.
The reader will notice changes in the structure and content of this volume to address these changes
and ensure a contemporary description of concrete – its composition and performance.
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Since its early days, many expected BIM (building information modeling) to be replaced or superseded by the next bright, shiny object--but that hasn't happened yet. While it has matured from its early days and is now seen as an everyday occurrence, it's still somehow shrouded in confusion and questions.
A key issue is a simple lack of references, a feeling of being out in the woods without a map to get you where you want to go. That's not to say there are no references. There are actually quite a few BIM manuals, guidebooks, and introductions, but many are, to put it politely, not terribly accessible, and none of them are specific to the steel construction industry.
AISC's BIM & VDC for Structural Steel and its newly released companion, Model Review and Approval, are geared specifically toward the structural steel design community. And yes, that's two acronyms in one title; the latter stands for virtual design and construction. These free guides will not only provide an introduction to BIM, but also address issues that affect the design and fabrication of structural steel
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Concrete has played a pivotal role in shaping the modern world’s infrastructure and the built environment. Its unparalleled versatility, durability, and structural integrity have made it indispensable in the construction industry. From skyscrapers to long-span bridges, water reservoirs, dams, and highways, the ubiquitous presence of concrete in modern society underscores its significance in global development. As we stand at the crossroads of environmental awareness and the imperative to advance our societies, the sustainability of concrete production and utilization is becoming a new engineering paradigm.
The immense demand for concrete, driven by urbanization and infrastructure development, has prompted a critical examination of its environmental impact. One of the most pressing concerns is the substantial carbon footprint associated with traditional concrete production. The production of cement, a key ingredient in concrete, is a notably energy-intensive process that releases a significant amount of carbon dioxide (CO2) into the atmosphere. As concrete remains unparalleled in its ability to provide structural functionality, disaster resilience, and containment of hazardous materials, the demand for concrete production is increasing, while at the same time, the industry is facing the urgency to mitigate its ecological consequences.
This special publication investigates the multi-faceted realm of concrete sustainability, exploring the interplay between its engineering properties, environmental implications, and novel solutions, striving to provide an innovative and holistic perspective.
In recent years, the concrete industry has witnessed a surge of innovation and research aimed at revolutionizing its sustainability. An array of cutting-edge technologies and methodologies has emerged, each offering promise in mitigating the environmental footprint of concrete. Notably, the integration of supplementary cementitious materials, such as calcined clays and other industrial byproducts, has gained traction to reduce cement content while enhancing concrete performance. Mix design optimization, coupled with advanced admixtures, further elevates the potential for creating durable, strong, and eco-friendly concrete mixtures.
Concrete practitioners will gain an advanced understanding of a wide variety of strategies that are readily implementable and oftentimes associated with economic savings and durability enhancement from reading these manuscripts. The incorporation of recycled materials, such as crushed concrete and reclaimed aggregates, not only reduces waste but also lessens the demand for virgin resources. Furthermore, the adoption of efficient production techniques, along with the exploration of carbon capture and utilization technologies, presents an optimistic path forward for the industry.
This special publication aspires to contribute to the ongoing discourse on concrete sustainability, offering insights, perspectives, and actionable pathways toward a more environmentally conscious future.
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