7 Minutes of BS (#BuildingScience w/a BEAT)
30 minute descriptions of technical topics distilled to seven minutes.
Science 30 rész 30 minute descriptions of technical topics distil…
Wildfire-Resistant Construction16 perc 30. rész
Wildfire is different from wildland fire. Wildland fire is a regular part of a region’s ecology. Wildfire is a wildland fire that burns out of control. In this episode, we are joined by Daniel Gorham, a fire engineer at the Insurance Institute for Business and Home Safety. We talk about what wildfire resistant construction is, how it works, why it matters so much these days, and how to do it right.
Jobsite COVID Protocols and Solutions: Career Toolbox Podcast21 perc 29. rész
Guest Rob Matuga, Assistant Vice President for Health, Safety, Jobsite regulations at the National Association of Homebuilders (NAHB) discusses how to re-open jobsites safely.
Heat Flow10 perc 28. rész
Guest Jonathan Smegal, from RDH Building Science Laboratories, explains the mechanisms of heat flow, and how it can actually flow around insulation.
Wind Resistance10 perc 27. rész
Guest: Dr. Anne Cope, Ph.D., P.E., Chief Engineer of the Insurance Institute for Business & Home Safety explains why calling it hurricane resistance puts so many people at risk.
EFFECTIVE R-Value:9 perc 26. rész
Can a wall plummet from R-50 to R-12 because of the studs? In this episode, we are joined by Jonathan Smegal, M.A. SC a Senior Project Manager with RDH Building Science Laboratories breaking down the nuts, bolts, what, why and how of R-value, insulation, and building assemblies.
Dew Point9 perc 25. rész
This time we discuss dew point with Dr. Allison Bailes, aka, the Energy Vanguard. “Dew point is the temperature at which water vapor in the air will condense on surfaces. So, if you have a surface that is at the dew point temperature of the water vapor that’s in the space around that surface, the water vapor will start condensing on that surface."
Stucco9 perc 24. rész
“Stucco is an exterior finish, and more specifically, we tend to think of it as an exterior plaster finish. In some of the literature and in architectural dictionaries, stucco can be used for both exterior and interior finish work, but really in this day and age, we talk about plaster, particularly in North America, for interior work.” —Sarah Gray, an engineer with RDH Building Science
ViscoElasticity7 perc 23. rész
"ViscoElasticity is what we’re talking about and that is the property of a material that exhibits the viscous nature of a liquid but also the elastic nature of a solid." —Allen Sealock, the product director for ZIP Systems with Huber Engineered Woods talking about the pressure-sensitive adhesives that are used on construction tapes.
The Psychrometric Chart7 perc 22. rész
Psychrometrics is the physics which deals with the process and properties of moist air, a combination of water vapor and dry air.
Low-E Coatings for Glass7 perc 21. rész
Low-e coatings screen infrared heat from moving through windows, either inward, outward, or both Today Ray Garries, Vice President of Engineering and Innovation at MI Windows and Doors joins the show to explain what low-e coatings are, how they work, and why they matter for windows in your home.
Historic Mortars8 perc 20. rész
Historic Mortars by ProTradeCraft.com
Unvented - Roofs8 perc 19. rész
Like an out-of-plumb wall, insulated and unvented roofs can work well—or not. In this episode, we are joined by Jonathan Smegal, M.A. SC a Senior Project Manager with RDH Building Science Laboratories breaking down the nuts, bolts, what, why and how of an unvented roof assembly.
The Building Science Behind Marijuana Grow Rooms7 perc 18. rész
People have been growing houseplants in houses for a long time. They balance relative humidity, they clean the air, and they generally make the place homier. But a marijuana grow-room is different—large bushes filling a bedroom, demanding resources that typical houseplants do not demand. This can produce a lot of unwanted situations from moisture and indoor air quality problems, increases water and electrical usage, and possibly com plaints from the neighbors about aroma. A lot more info is here: https://www.protradecraft.com/engineering-building-science-and-code-implications-marijuana-grow-rooms
Flood Resistant Construction and Cleanup8 perc 17. rész
If you can't build to stay dry, build to tolerate wet. In this episode of 7 Minutes of BS, 'Dr. Joe' Lstiburek, PhD , P. Eng, ASHRAE Fellow, and founding principal of Building Science Corporation explains why flood water cleanup is critical, and how to rebuild with tolerance in mind. Flood resistant construction is two things: One approach is to build above the flood level, and it doesn't matter. That's an insanely logical way of doing it, you don't have to use special materials once you get above the flood level. The second is that you assume the materials in the assembly are going to get wet, and saturated, so you build it in such a way that it is easy to dry and clean the building and pout it back together after the event happens.
Drip Edge Flashing7 perc 16. rész
A Drip edge is the leading edge of a flashing, sill, overhang or other linear, horizontal building element, designed to shed water. they’re commonly found at enclosure details such as flashings, overhangs, or transition details between enclosure elements. Like where one type of siding meets another. Or at the base of a wall where siding sets above a water table band.
Science: What it is, how it works, why it matters and how climate science informs building design13 perc 15. rész
"Science is a method of understanding how things work in the universe." Allison Bailles, Ph.D. is the gest for this episode of 7 Minutes of BS. We decided to back out of Building Science for a minute to talk about what science is, how it works, why it matters, and whether only ostrichs do not understand that climate change is a thing.
IAQ: 7 Minutes of BS7 perc 14. rész
Three-pronged solution to indoor pollution: Isolate, eliminate, and ventilate. For today's topic, we have Jim Shelton, Vice President, Panasonic Eco Solutions of North America as he breaks down the nuts and bolts of cleaning the air inside a building and keeping that way.
Heat Stress: 7 Minutes of BS6 perc 13. rész
Heat stress is a net heat load to which a worker is exposed from the combined contributions of metabolic heat, environmental factors, and clothing worn, which results in the increase in heat storage in the body. Too much heat stress can increase the risk for experiencing a heat-related illness such as heat stroke, heat exhaustion, heat cramps, heat rash— and DEATH. Image: Guian Bolisay via Wikimedia Commons
Air Barriers8 perc 12. rész
"You can't simply go down to the hardware store and buy a box labeled air barrier." This episode features Jonathan Smegal, M.A. SC a Senior Project Manager with RDH Building Science Laboratories breaking down the topic of air barriers in walls and roofs. "A layer in the enclosure that stops the air movement from the interior to the exterior, and it often requires many components that are put together to make a durable continuous air barrier system."
Architectural Projections- Old Details That Work8 perc 11. rész
In this episode, we are joined by Sarah Gray, an engineer with RDH Building Science Inc. to talk about using simple physics to outthink simple physics. Using gravity to beat surface tension, and slope to beat gravity.
Vapor Permeance8 perc 10. rész
Vapor permeance is the property of a material – and in our discussions this will be building materials – which permits the passage of water vapor through it. Today's guest is Jonathan Smegal of RDH Building Science Laboratories... Some materials have high vapor permeance which means they allow a lot of water vapor to pass and other materials have significantly less vapor permeance, so they block water vapor movement and these are called vapor barriers or vapor retarders."
Radiant Barriers7 perc 9. rész
Thin foil can block massive amounts of heat transfer, but it needs a massive temperature difference to be effective. So, in residential construction, thermal insulation makes radiant barriers largely irrelevant.
Makeup Air7 perc 8. rész
Houses cannot expand and contract with changes in pressure like balloons can. Instead, they need paths for air to balance the pressure
Roof Ventilation8 perc 7. rész
Roof Ventilation by ProTradeCraft.com
Reservoir Claddings and Mass Walls7 perc 6. rész
Guest: Sarah Gray, P. Eng., RDH Building Science Inc. Reservoir claddings include brick, stone, terra cotta, and even stucco, that are all porous materials. When exposed to rain or vapor diffusion, those pores will absorb and hold water until, the pores dry out. Just like a dam holds back lake water, the damned bricks hold the rain.
Mechanical Ventilation7 perc 5. rész
Exhaust, supply, balanced, and backdrafting. How to visualize what you cannot see.
Efflorescence8 perc 4. rész
Physics vs physical structures and how salt can blow apart brick.
Thermal Bridging6 perc 3. rész
Building science with a beat
Stack Effect7 perc 2. rész
Stack effect is relentless: it is always working, when you’re awake or asleep, even during blackouts. And it feeds on itself.
Ice Dams6 perc 1. rész
A big problem, for roofs in cold climates, but what causes it and how can you fix it?