Concrete Construction covers key concepts of concrete materials, properties, and safety, as well as horizontal and vertical installation techniques. Finishing, repair, and quality control content also sets learners up for job success.
Concrete Construction also supports multiple training pathways and credentials in four specific occupational areas of concrete construction, including concrete placement, concrete formwork, concrete reinforcement, and concrete in highway systems.
Module ID 23101: Introduces the role of concrete in construction and identifies basic concrete properties and characteristics. Provides an overview of the concrete construction process, identifies opportunities available to concrete craftworkers, and describes the purpose and structure of apprenticeship programs.
Module ID 23102: Describes the role of OSHA in the workplace and presents safety hazards unique to the concrete construction environment, including the control of silica dust. Identifies and describes the PPE concrete craftworkers commonly require.
Module ID 75901; from Fall Protection Orientation: Covers fundamental safety and hazard recognition concepts. Introduces the role of OSHA in regulating elevated work on the jobsite and the causes, costs, and consequences of falls. Presents proper use of fall protection equipment; safe use of stairs, ladders, and scaffolds; and guidelines for use of aerial lifts.
Module ID 23104: Introduces trainees to a wide variety of both hand tools and powered equipment used in concrete construction, including screeds, floats, trowels, saws, grinders, and mixing equipment. Tips for the safe use of tools and equipment are also provided.
Module ID 23105: Provides an overview of common concrete construction tasks that take place before placement begins. Covers elevations and subgrade preparation, as well basic form types, joints, and pre-placement inspections.
Module ID 27304; from Carpentry Level Three: Explains the selection and uses of different types of reinforcing materials. Describes requirements for bending, cutting, splicing, and tying reinforcing steel and the placement of steel in footings and foundations, walls, columns, and beams and girders.
Module ID 27307; from Carpentry Level Three: Covers basic site layout safety, tools, and methods; layout and construction of deep and shallow foundations; types of foundation forms; layout and formation of slabs-on-grade; and forms used for curbing and paving.
Module ID 27308; from Carpentry Level Three: Covers the applications and construction methods for types of forming and form hardware systems for walls, columns, and stairs, as well as slip and climbing forms. Provides an overview of the assembly, erection, and stripping of gang forms.
Module ID 27309; from Carpentry Level Three: Describes elevated decks and formwork systems and methods used in their construction. Covers joist, pan, beam and slab, flat slab, composite slab, and specialty form systems and provides instructions for the use of flying decks, as well as shoring and reshoring systems.
Module ID 23204: Describes the construction of various placements that are common to many building construction projects, including curbs and gutters, stairways and steps, walks, driveways, and patios.
Module ID 23108: Describes the essential concrete curing and protection process. Introduces various approaches to curing and the primary factors that significantly affect the resulting strength and durability of the placement.
Module ID 23207: Describes random-traffic and defined-traffic superflat floors and the flat and level characteristics that set them apart from other slabs. Provides insight into the finishing process and describes how various floor-measurement instruments are used to document the results.
Module ID 23208: Provides detailed coverage of the many methods used to prepare a concrete surface to meet a specific surface profile, from detergent scrubbing to rotomilling. Also identifies and describes how to apply shakes, protective sealants and coatings, and self-leveling toppings and underlayments.
Module ID 23212: Presents the many possible components of concrete, including the desirable properties of the chosen aggregate and water. Includes a review of chemical and mineral admixtures, fibers, and special types of concrete. Also covers the basics of concrete testing.
Module ID 23202: Reviews basic mathematical calculations for area and volume as well as metric conversions to prepare trainees for the module topic. A review of drawings and their interpretation is also provided, along with guidance for estimating the volume of concrete needed in placements of various shapes.
Module ID 27310; from Carpentry Level Three: Describes how tilt-up concrete construction is used and how tilt-up panels are formed, erected, and braced. Covers the installation of rebar and types of embedments used to lift and brace the panels. Also covers methods used to create architectural and decorative treatments.
Module ID 23211: Defines quality control and discusses fresh concrete troubleshooting and problem resolution. Provides detailed coverage of concrete field tests and specimen preparation according to ASTM standards.
Module ID 23210: Provides an overview of the concrete repair process, focusing on repairing concrete with concrete. Explains how hidden concrete faults and embedments are located and how to properly prepare reinforced concrete for placement of the repair material. Coverage of pre-placement and post-placements inspections is also provided.
Module ID 23205: Identifies and describes various architectural finishes and how they are applied. Covers the coloration of concrete surfaces and how to use form liners and stamps to create texture. Provides detailed guidance on the creation of exposed aggregate finishes.
Module ID 23206: Presents this key segment of concrete flatwork and the characteristics of industrial floors while explaining how industrial-class floors are created, including pre-placement considerations.
Concrete Construction curriculum provides four interim credentials culminating in a full craft completion: Concrete Placement, Concrete Formwork, Concrete Reinforcement, and Concrete in Highway Systems.
This Second Edition of the SMACNA commercial metal and flexible duct construction standards is another in a long line dating from the 1950s. A quick overview of the changes is provided in the front of this manual. Meanwhile, a Committee has already begun work on what will be either addenda or a new edition. Subjects being investigated are ribbed round duct, fatique testing of tie rodded metal, new flat oval duct standards, duct liner pin lengths, more double wall casings, sealant specifications and more performance specifications for joints and reinforcements. And, indirectly related to these standards, significant progress is being made by major mechanical code writing agencies in developing one uniform, consensus-supported code for the entire nation.
This document or publication is prepared for voluntary acceptance and use within the limitations of application defined herein, and otherwise as those adopting it or applying it deem appropriate. It is not a safety standard. Its application for a specific project is contingent on a designer or other authority defining a specific use. SMACNA has no power or authority to police or enforce compliance with the contents of this document or publication and it has no role in any representations by other parties that specific components are, in fact, in compliance with it.
Nonexclusive, royalty-free permission is granted to government and private sector specifying authorities to reproduce only any construction details found herein in their specifications and contract drawings prepared for receipt of bids on new construction and renovation work within the Untied States and its territories, provided that the material copied is unaltered in substance and that the reproducer assumes all liability for the specific application, including errors in reproduction.
The SMACNA logo is registered as a membership identification mark. The Association prescribes acceptable use of the logo and expressly forbids the use of it to represent anything other than possession of membership. Possession of membership and use of the logo in no way constitutes or reflects SMACNA approval of any product, method, or component. Furthermore, compliance of any such item with standards published or recognized by SMACNA is not indicated by presence of the logo.
7. Table 1-1 now features static pressure only as the basis for duct construction classification; velocity levels were deleted. The default-to-one-inch-pressure-class (250 Pa) provisions were retained in case designers do not give construction pressure classes.
19. Structural engineers assisted SMACNA in rerating joints and reinforcements based on minimum thickness rather than nominal thickness. The EI index and ratings were changed to focus more on effective EI and allowable bending moments.
25. Designer options of specifying fittings by class (all-welded, spot or tack welded, seamed or rivet, screw or die-stamp locked) were inserted for sealed or unsealed specification in the event that allowable leakage specifications do not otherwise regulate this.
A duct system is an assembly whose primary function is to convey air between specified points. ASHRAE categorizes duct systems as either single path or dual path. Systems should be designed using accepted engineering practice and data such as that in the four ASHRAE Handbooks and the SMACNA HVAC Duct Systems Design manual. A duct system may contain ducts under positive and negative pressure. Air velocities will vary within the system. At coils and filters, the velocity may vary from below 1000 fpm (5.08 m/s) to over 3000 fpm (15.24 m/s). Velocity in duct mains and branches can be at constant (high or low) or varying levels. With the many available systems sizing methods (e.g., equal friction, static regain, velocity reduction, total pressure) and system types, performance cannot be economically optimized unless the designer selects construction details appropriate for the given pressure and velocity.
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