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).
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 ...
6 Things to Know About Construction Bonds - Contractor
Dec 14, 2021 · What’s more, different types of construction bonds will have different price tags, with bid bonds being the least expensive ones. Finally, the bond rate will vary based on the surety company and the size of the contract. Generally speaking, the cost of a construction bond can go anywhere from 1% to 4% of the total contract amount. 5.
Sump, Effluent, & Sewage Pumps: Tips for Selecting the
Mar 22, 2024 · For example, if you have a sump basin that has a gravel base you may run into small rocks or debris that may be loose and may be moved through the pump and out the discharge. With a sump/light effluent pump anything under ½ inch will move down the line easily. Here are a few tips on selecting the best sump pump for your application:
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Best Practices When Using Acid-Based Drain Cleaners
Feb 19, 2024 · To ensure safe and effective use of drain cleaners, contractors should follow these best practices. 1. Read and follow the instructions. Different drain cleaners have specific instructions for usage and safety precautions. Carefully read and understand the manufacturer's instructions before using any drain cleaner.
IAPMO Uniform Codes and Standards Update | Contractor
Mar 27, 2020 · The International Association of Plumbing and Mechanical Officials (IAPMO) published the 2021 Uniform Plumbing Code (UPC) and the 2021 Uniform Mechanical Code (UMC) in March.The codes have been updated with safety provisions for the protection from legionellosis, installation of alkaline water treatment devices, and inclusion of requirements for leak detection, just to list a few.
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.
Record Retention 101 for Contractors | Contractor
Mar 18, 2020 · Record Retention 101 for Contractors. March 18, 2020. Record-keeping is one of the most often overlooked, but critical functions of the business. By Audrey K. Kwak. There is no question that construction is a uniquely document-intensive industry. On every project, countless, lengthy, records are generated: contracts, specifications, daily ...
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 ...