Before the growth and implementation of comprehensive building codes, it was common practice for rooftop equipment to be installed without being firmly attached to a building's structure. The reason was the weight of an HVAC rooftop unit that would be sufficient to keep a curb and the rooftop unit on top of a building.

However, recent research into the effects of natural disasters has shown that to resist significant seismic and wind loads, rooftop units must be firmly restrained from moving off their curbs, and curbs must be attached to a building's structure. This research is changing the way the mechanical roof curb is designed, built and installed.

Many jurisdictions require a licensed engineer to certify that curbs and restraints meet the requirements of applicable building codes. The process by which curbs are now designed can be summarized in the following steps. First, a roof curb designer must learn the governing building code for a particular project.

This information is typically provided in the mechanical or structural sections of project specifications. The designer should also be aware of any project requirements that are more stringent than those listed in the building code. If the project specifications do not include an applicable building code, the designer can determine it by contacting the building department that has jurisdiction in the area where the building is located.

Currently, doctors recommend massage therapy to their patients to reduce stress. Massage therapy includes a variety of therapeutic approaches that improve human health and well-being by directly manipulating muscles and other soft tissues of the body.

Additionally, it is used as part of a program to treat many conditions, including chronic pain. Many companies now see the potential to increase work productivity, improve work ethic, and reduce the number of days employees lose their jobs. The public interest in adjunctive therapy has helped many users try massage.  You can also consult with a massage practitioner in Pickering using the web.

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How do you find a massage therapist that is legitimate? A personal recommendation from a friend or healthcare provider is the best way to find a massage therapist. You can also search yellow pages or online. However, talk to them by phone or email before going to your session.

The therapist's main concern is that you are satisfied with your experience. So if you are looking for a therapist and want to make sure your expectations are met, open lines of communication between you and the prospective massage therapist. Therapists should want to share information about their business and should therefore welcome any questions you may have.

If you've never had a massage before, you may feel nervous and don't know what to expect. Asking questions can help you relax, which will make your first massage experience more enjoyable.