Window Roundup

The Green Building Institute Window Report is on our server under reference/material guides. Check it out.

The GBI GreenSpec website has a link to customer ratings of of seventy window manufacturers, available under our log-in. Herewith, a peek: top-five rankings for four categories. The Cost category is, yes, the rank of the top five most costly.

OverallQualityServiceCost
1MarvinIntusLoewenAccurate Dorwin
2OptiwinLoewenMarvinBieber
3Accurate DorwinMarvinAndersonJ. S. Bensen
4AndersonOptiwinGilkeyKolbe & Kolbe
5IntusSchŸucoIntusLinwood

We don’t have any relationship with these companies other than to have recently specified Marvin, Loewen, and Intus for our clients. It’s nice to see this independent data  organized by the GBI reinforce our own research.

 

Insulation Roundup

The BGI Insulation Report is on our server under reference/material guides. Six HSW credits! Go for it.

Keeping 4-5-10-30-60 in mind, here are the best choices by application, considering the greenness of the material only. In practice, moisture dynamics, air leakage, condensation, and assembly mechanics might make the second-best right for a particular situation, but most of the time it’s easy to stick with number one.

Best
Choice
Approximate
R-Value
Environmental
Notes
Performance
and Cost Notes
Cavity Fill, Residential
Dense-packed cellulose3.8Low embodied energy.
High recycled content.
Renewable.
Impedes air leakage.
Allow to dry to at least one side.
Cavity Fill, Commercial
Spray-applied or dense-packed fiberglass4.030% recycled content.
Higher embodied energy than cellulose.
Fire-resistant.
Impedes air leakage.
Note susceptible to moisture.
Acrylic binder allows installation without netting.
Insulating Sheathing, Exterior
High-density rigid mineral wool.3.0High recycled content.
Excellent sound control.
Insect- and moisture-resistant.
Faced and unfaced.
Tricky detailing for many types of siding.
Insulating Sheathing, Interior
Foil-faced polyisocyanurate.6.3GWP blowing agents have been eliminated.Highest R-value of common materials.
Affordable.
Radiant barrier.
Impermeable if foil-faced.
Foundation Wall, Exterior
Cellular Glass3.0High compressive strength.
No blowing agents or flame retardants.
Expensive.
High-density rigid mineral wool3.0Hydrophobic.Harder to install and cover.
Foundation Wall, Interior
Polyisocyanurate6.2High embodied energy but GWP blowing agents have been eliminated.Good for flat substrates.
Sub-slab Rigid Insulation
Cellular Glass3.0High compressive strength.
No blowing agents or flame retardants.
Expensive.
EPS Type II or Type IX4.2Manufacturing pollution issues.
HBCD flame retardant.
Use higher-density types.
Attic Floor Insulation
Loose-fill cellulose3.6Low embodied energy and carbon.
Renewable.
High recyled content.
Vapor-permeable but impedes airflow.

Ground Rules for Effective Meetings

Our friends at 37 Signals say: Meetings are Toxic. We disagree.

Meetings are the core of what we do as collaborative designers: we talk to each other, we talk to clients, we get stuff done and make plans together.

Effective, productive, engaging, group work is invigorating, certainly the opposite of toxic. But without doubt a lousy meeting is toxic, and at best a boring waste of time.

What’s a “Meeting”?

There’s a difference between a Meeting and Collaborative Work:

  1. Meetings focus on reporting status within a team, or polling external stakeholders for a vote. We report status of a design to clients in the form of a presentation. Internal project meetings communicate the status of tasks relative to milestones or goals. “Where are we?” “Where do we stand?” “How will we react?” “Are we ahead or behind?
  2. A meeting is not the place for technical or diplomatic work, the work having taken place and been resolved before hand. Meetings are a time for consensus-building. Everyone arrives knowing the answer. Negotiations have already taken place in the background, foundations have been laid, deals have been struck, homework has been done.
  3. Meetings are a good time for leaders to make and communicate decisions. On the other hand, meetings, and/or process, are no substitute for strong leadership.
  4. Collaborative work and brainstorming sessions are not ‘meetings’, per se, but still require defined start and stop times.
  5. Fellowship and relationships and story-telling are essential to an effective organization, however meetings are not the time for these things.
  6. A daily or weekly scrum can be the weekly or daily ten-minute drumbeat keeping a project on pace. It still requires a standing agenda. In the software world, Agile development teams have codified stand-up meetings without tables or chairs – immense amounts of information can be shared in a relatively short amount of time.

What are the keys to a non-toxic, effective meeting?

The Wall Street Journal prompts us to finally put it out there: ground rules for BDA meetings. The Journal’s list is very close to the list we’ve been developing, so we will quote it directly below. [My comments are in-line.]

  1. Have an agenda and stick to it. It seems obvious, but most meetings fail because they are poorly planned and therefore go off track. Writing down the agenda and circulating it helps keep everyone on the same page. [Pre-publishing an agenda is essential groundwork for an effective meeting. Every agenda item has its own time limit. Think of meetings the same way you would think of any design problem. Organize and prioritize. Work to a set of intentions. Just talking about stuff? Not a meeting. Brainstorming, maybe. Save that for after hours or a one-on-one.]
  2. Block half the time you usually do for meetings and keep strict time. Instead of a half-hour meeting, block a 15-minute slot. Meetings expand to fill the time you have. [Most meetings require a facilitator to keep them running efficiently. It is difficult for the leader of the meeting to also be the facilitator.]
  3. Don’t tolerate late starts. If meetings have regular stragglers, consider fining participants a nominal fee and use the money for office parties. [I like the idea of office parties, but fines are a ridiculous notion. Nevertheless, the modus operandi of the meeting facilitator is to start on time, regardless of who is present or not.]
  4. Consider banning mobiles or laptops from meetings—especially short sessions—to prevent participants from zoning out. If a meeting is long, set scheduled email breaks so people aren’t distracted throughout. [The checking of email is a sure sign a meeting has gone off the rails. Laptops *are* toxic in a group environment, period. Not a big problem for us... but still.]
  5. Consider holding a stand-up meeting, which research shows may cut meeting length by as much as a third. A walking meeting, best for small groups, can also help participants clear their heads and get some exercise. [In our open-office environment, we're pretty good at the quick "touch-base report status" meeting. A sidebar or caucus, really, between team members.]
  6. If there are follow-up or action items, make it crystal clear who should be doing what and who is accountable. [Basecamp is ideal for this purpose. Use it.]

 

Recommended (not Code) Insulation Values?

For moderate climates, the recommendation is: 4-5-10-30-60.

That is: R-4 windows, R-5 under slabs, R-10 foundation walls or slab perimeter, R-30 above-grade walls, and R-60 in the attic or roof.

Condensation Roundup


Give Mr. Water and inch and he sneaks in to take a mile. The Cloak of Vapor Invisibility is one of his best disguises.

Here’s a little quiz:

Do you know our climate zone?

Do you know the thickness of rigid insulation required by code on the outside of wall sheathing?

Do you know the required thickness of rigid insulation above the roof sheathing, for unvented cathedral ceiling assemblies with vapor-permeable insulation below the sheathing?

Do you know where the vapor barrier should be placed in a wall in our climate?*

Did you know that the best insulation comes in a board version that is rigid enough to screw 1×3 furring strips through without deflection?

Do you know the correct techniques for specifying and installing dense-pack cellulose insulation in walls and ceilings?

Do you know where to get ROXUL mineral-wool insulation locally?

We use walls to climate-control an interior, and also, weirdly, for the distribution of pipes and wires. Do you know that one of the best ways to vapor-seal your residential wall assembly also sorts out the pipes and wires from the insulation, thereby improving effectiveness of both?

Do you have good ideas about how to get a vapor-seal to span the band board required by standard western platform framing, when a vapor-seal is indicated by the building’s climate zone?

What does your thermal barrier checklist look like? Here is the one provided by the 2009 IRC.

And finally, do you understand the difference between a vapor barrier, a vapor retarder, and an air barrier? Do you know how to properly deploy them in our climate? Did you know that for tricky hot/cold climates like that found in Virginia, there is a vapor retarder with seasonal intelligence?

* ATBVO is the acronym to keep in mind for Virginia, according to our favorite energy consultant. “Air tight, but vapor open” to both sides.

Ten Steps to Becoming the Designer You Want to Be

Good advice from a self-described mentor and design veteran.

  1. Get the book
  2. Get the obscure book you’ve never heard of
  3. Choose a topic that fascinates you and learn it inside out
  4. Write, blog, and speak on that topic
  5. Learn Something New Every Day
  6. Create a New Idea Every Day
  7. Experiment
  8. Learn as many frameworks as you can
  9. Choose variety over anything else
  10. Model or draw (all the f*@#ing time)

She begins:

An open letter to the next generation of designers, part 1.

Everyone has moments in their career when they look back and think, “If I had only known then what I know now….” After 15-plus years as a designer and design researcher at places like IBM, Trilogy, M3 Design, and now frog design, I know I certainly have. Which is why, now that I’m a veteran, I’d like to give share some advice with young designers just starting out. If I could be your mentor, this is what I would tell you:

Jump to link.

Footnote:

The obscure book referenced above is The Universal Traveler: A Guide to Creativity, Problem Solving & the Process of Reaching Goals. I discovered this book as an undergraduate in architecture school and I am sure my teachers hated seeing such a hippy book in their studio. Maybe they were on to something: I found the book’s language unfathomable. I barely understood what it was about. Yet it spoke to me, and apparently some seeds were planted. So we have bd-MAP: not a Universal Traveler – as we’re trying to get a rather specific type of work done. bd-MAP would be your Specific Traveler According to Universal Themes.

CAD Class :: Guide Lines

Everything you need to know about guidelines: creating them, forcing them, moving and removing them.

watch the video.  (the second of the two videos is for AC15)

CAD Class :: Using the Ruler and Shift Key Constraints

 

Rulers, dragging guidelines, cursor projection, and curser snap variants! Who knew? Just hit Q.

watch the video

 

Artlantis node-to-node navigation

For our clients with iPads, a more controlled experience than BIMx.

LNL: Acoustic Ceiling & Wall Systems


March 28, 2012

Acoustic Ceiling & Wall Systems by Armstrong

Ok, so this image is not exactly what Armstrong is pushing, but they do have a variety of effective acoustic treatment systems.