Summer construction season is coming to an end, but not before we tackle our biggest weekend of construction for the region this year. We're calling it our Monster Weekend. Buckle up (literally) because here's what's going down:
A map depicting full closures of State Route 520, Mercer Street on ramps to I-5, Northbound I-405 in Renton, Southbound SR 167 in Kent, and I-5 OVERNIGHTS ONLY near Fife. The map is covered in cute cartoon monsters.
SR 520 CLOSED - highway and trail
-Where: From I-5 in Seattle to 92nd Ave NE in Clyde Hill
-When: 11 p.m. Friday, Sept. 27, to 5 a.m. Monday, Sept. 30
-What: Working on lighting and the fire suppression system under the new Montlake lid over SR 520.
NB I-405 in Renton CLOSED
-Where: From Sunset Boulevard Northeast/Southport Drive (Exit 5) to Coal Creek Parkway SE
-When: 11 p.m. Friday, Sept. 27, to 4 a.m. Monday, Sept. 30.
-What: Shifting northbound traffic onto a new bridge. A signed detour will be available. This work is weather-dependent and may be rescheduled.
SB SR 167 in Kent CLOSED
-Where: From SR 516 to South 27th Street
-When: 11:59 p.m. Friday, Sept. 27, to 4 a.m. Monday, Sept. 30.
-Why: Paving and striping sections of SB SR 167. This work is weather-dependent and may be rescheduled.
Both directions I-5 CLOSED - overnights only!
-Where: Between SR 18 in Federal Way and 54th Ave E in Fife
-When: Overnight Friday, Sept. 27, and Saturday, Sept. 28. NB lanes will close by 10:30 p.m. and SB lanes by 11 p.m. On Saturday, lanes begin opening at 7 a.m. (fully open by 11 a.m.). On Sunday, lanes begin reopening at 8 a.m. (fully open by noon).
-Why: Setting girders for a new overpass crossing I-5.
Mercer Street on-ramps to I-5 CLOSED
-Where: Mercer Street on-ramps to both NB and SB I-5 in Seattle
-When: 10 p.m. Friday, Sept. 27, and 5 a.m. Monday, Sept. 30.
-Why: Paving the ramp and adjacent shoulders.
Some of these closures have detours, but a warning: Detour routes cannot accommodate normal traffic volumes, so try to travel during off-peak hours or, if possible, delay your trip to help minimize backups.
It's been a long summer of road work. You've been patient, and we're grateful for that. We need to get this work done now before we fully enter The Big Gray.
I'm not an HVAC technician so I wouldn't know exactly, but I think there's two things to consider: static pressure and duty cycle. Static pressure is the fan working hard to spin which causes wear on bearings. Duty cycle is how long the machine runs. If your duty cycle is too low then the machine is turning on and off quickly which is bad.
You could look at the size of the unit and there's some rules of thumb that translate size, climate, and square footage of just the areas you leave the vent open and there are online calculators you can use.
I think the only way to know for sure is to measure the pressure drop across the intake and outflow and see what the fan motor is rated for.