Why do you undercut a door?

Door undercuts are commonly used to provide a return air pathway from rooms with closed doors. (Source: Steven Winter Associates.) To determine if an adequate pathway exists for air to return to centrally located returns, the following room-to-room pressure measurement can be used: Turn on the air handler to high.

basc.pnnl.gov - Undercut Doors | Building America Solution Center

Do shipping containers get damp?

Yes – shipping containers will get damp. As they cool down overnight, water suspended within the air inside your container will condense against...

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Which sheet is best for shed?

Foam-backed polycarbonate roof sheets are lightweight and durable. They are installed in industrial buildings, like warehouses, because of their...

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Can I build my own shed?

Yes, with the right plans you can build your dream shed.

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Compliance

The Compliance tab contains both program and code information. Code language is excerpted and summarized below. For exact code language, refer to the applicable code, which may require purchase from the publisher. While we continually update our database, links may have changed since posting. Please contact our webmaster if you find broken links.

ENERGY STAR Single-Family New Homes, Version 3/3.1 (Rev. 11)

National Rater Field Checklist

HVAC System.

6. Duct Quality Installation - Applies to Heating, Cooling, Ventilation, Exhaust, & Pressure Balancing Ducts, Unless Noted in Footnote. 6.2 Bedrooms pressure-balanced (e.g., using transfer grilles, jump ducts, dedicated return ducts, undercut doors) to achieve a Rater-measured pressure differential ≥ -3 Pa and ≤ +3 Pa with respect to the main body of the house when all air handlers are operating. Test configuration and an alternative compliance option in Footnote 37.37 Footnote 37) Item 6.2 does not apply to ventilation ducts, exhaust ducts, or non-ducted systems. For an HVAC system with a multi-speed fan, the highest design fan speed shall be used when verifying this requirement. For an HVAC system with multiple zones, this requirement shall be verified with all zones calling for heating or cooling simultaneously; additional testing of individual zones is not required. When verifying this requirement, doors separating bedrooms from the main body of the house (e.g., a door between a bedroom and a hallway) shall be closed and doors to rooms that can only be entered from the bedroom (e.g., a closet, a bathroom) shall be open. As an alternative to the ± 3 Pa limit, a Rater-measured pressure differential ≥ -5 Pa and ≤ +5 Pa is permitted to be used for bedrooms with a design airflow ≥ 150 CFM. The Rater-measured pressure shall be rounded to the nearest whole number to assess compliance. Please see the ENERGY STAR Single-Family New Homes Implementation Timeline for the program version and revision currently applicable in in your state.

Associated Air Barrier Council (AABC)

AABC National Standards for Total System Balance 2002. The manual details the minimum standards for total system balance.

National Environmental Balancing Bureau (NEBB)

NEBB Section 15990 – Testing, Adjusting, and Balancing. NEBB is a certification association whose members perform testing, adjusting and balancing (TAB) of heating, ventilating, and air-conditioning systems and commission and retro-commission building systems. This document is the TAB procedural standards.

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There are typically three types of perspective drawing: one-point perspective, two-point perspective, and three-point perspective. May 13, 2018

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While concrete will be cheaper than using slabs, it will likely look cheaper on the whole. Which brings us to one other option; concrete...

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Will snakes cross diesel?

Snakes are not afraid of diesel. There are many people who claim that diesel is an effective repellent for snakes, but there is no evidence to back...

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