Vacuum Breakers: Understanding how they protect our water
Jun 10, 2016 · Atmospheric vacuum breakers. The purpose of a vacuum breaker is to stop back siphonage. The atmospheric vacuum breaker consists of a check valve member and an air vent that is normally closed when the device is pressurized. The air vent allows air into the piping system for the purpose of stopping a siphon at the point of use (see Figure A).
Home | Contractor
5 days ago · CONTRACTOR provides news, insights, and how-to content to professionals responsible for plumbing, heating, specialty piping and fire protection systems.
ABC: 2024 Construction Workforce Shortage Tops Half a Million
Jan 31, 2024 · About the Model. ABC’s model uses the historical relationship between inflation-adjusted construction spending growth, sourced from the US Census Bureau’s Value of Construction Put in Place Survey, and payroll construction employment, sourced from the US Bureau of Labor Statistics, to convert anticipated increases in construction outlays into demand for construction labor at a rate of ...
Common Brazing Mistakes and How to Avoid Them | Contractor
May 18, 2023 · Mistake #2: Dirty pipe surface. The joint surface areas must be clean and free from oil, grease, or oxide contamination prior to brazing. Cleaning the piping to be brazed is very important. A dirty surface prevents the alloy from melting across the entire surface.
Union Shop, Merit Shop, and America’s Way Forward
Oct 8, 2024 · The answer (surprise!) depends on who you ask. ABC notes that only 10% of workers in the United States belong to a union, which means PLAs effectively remove 90% of the workforce from the bidding process. According to their research, excluding the most effective, efficient and local businesses can add from 12% to 20% to the cost of projects.
Best Practices for Servicing CPVC Pipes and Fittings
Jan 31, 2024 · As the aged pipe becomes more rigid, it must be cut and handled differently than new pipes. Always use a C-style tubing cutter, a fine-tooth saw or a wheel cutter when servicing CPVC. Ratchet cutters or shears are not recommended for cutting previously installed CPVC pipes. Service plumbers also typically use a different, faster curing solvent ...
NTEA, SEMA File Suit to Stop EV Truck Mandates | Contractor
Mar 19, 2024 · FARMINGTON HILLS, MI – NTEA – The Work Truck AssociationTM and the Specialty Equipment Market Association (SEMA) have filed suit in the US District Court’s Eastern District of California against the California Air Resources Board (CARB), seeking immediate declaratory and injunctive relief to stop electric vehicle mandates CARB intends to implement through its Advanced Clean Fleets (ACF ...
Michigan E-Portal Allows Permits Online - Contractor
Apr 1, 2003 · LANSING, MICH. - The Michigan Department of Consumer and Industry Services, Bureau of Construction Codes (BCC) and Accela Inc., a developer of government enterprise management software, in mid-March announced the commercial deployment of a new portal Web site for online permitting and status checking.
How to Navigate a Workers' Compensation Audit | Contractor
Oct 3, 2024 · How it All Starts. The Audit begins with a letter from the Workers’ Compensation Insurance Company, which is mailed to the company’s address and contact on file. It is addressed to the Policy Holder (which is the company being audited). The letter contains the following references: the policy number, audit number, and audit period.
The Consulting Engineer’s Guide to Advanced Electric Boiler …
Nov 1, 2024 · The Consulting Engineer’s Guide to Advanced Electric Boiler Technology. Sept. 26, 2024. Boiler technology expert Robert Presser explains what consulting engineers most need to understand about electric boiler technology, including its selection, implementation, and benefits. Del Williams. For consulting engineers tasked with planning ...