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abbreviations in plan checking

Mac Moonfire

SAWHORSE
Joined
Aug 2, 2019
Messages
89
Location
BC
Hi all,
I am reviewing plans for a house and I am unsure of some abbreviations.
English is not my mother tongue and the plans are from Canada

"2&BTR" ei: 2x12 2&BTR SPF floor joists @400mm on center.
"BU" ei: 2x10 BU flush beams over 6x6 S4S D-fir posts.
"C/W" ei: Perforated perimeter drain pipe C/W (25mm) drain rock around perimeter.
"DN 15 R" written just above exterior stairs
"14 EQ R DN" written just above interior stairs
"FF" ei: "R28 FF insulation C/W .15mm poly vapor barrier.
"FRR" ei: Line of fire separation wall with rated FRR.
"OH" ei: Drop foundation walls for 2745mm OH garage doors.
"MBFE" This is a leveled elevation below foundations.
"S4S" ei: 2x10 BU beams over 6x6 S4S D-fir posts
"SPF" ei: All wall framing material shall be SPF #2or better.
"STD" ei: 12.7mm STD sheating. 12.7mm STD ply all on engineered wood trusses.
"SW" ei: Exhaust fan (2.0 sone) to exterior C/W timer SW.
"RC" ei: Decorative timber truss over 184mm RC posts -D- fir.

Thank you in advance for your help:D
 
Hi all,
I am reviewing plans for a house and I am unsure of some abbreviations.
English is not my mother tongue and the plans are from Canada

"2&BTR" ei: 2x12 2&BTR SPF floor joists @400mm on center. Lumber graded number 2 and better
"BU" ei: 2x10 BU flush beams over 6x6 S4S D-fir posts. Built Up beams, like doubled 2x12
"C/W" ei: Perforated perimeter drain pipe C/W (25mm) drain rock around perimeter.
"DN 15 R" written just above exterior stairs. Stairs have 15 risers going down
"14 EQ R DN" written just above interior stairs. Stairs have 14 equal risers going down
"FF" ei: "R28 FF insulation C/W .15mm poly vapor barrier.
"FRR" ei: Line of fire separation wall with rated FRR.
"OH" ei: Drop foundation walls for 2745mm OH garage doors. Over Head door
"MBFE" This is a leveled elevation below foundations.
"S4S" ei: 2x10 BU beams over 6x6 S4S D-fir posts. Lumber that is Surfaced Four Sides. Nice visual appearance, not rough sawn.
"SPF" ei: All wall framing material shall be SPF #2or better. Spruce Pine Fir.
"STD" ei: 12.7mm STD sheating. 12.7mm STD ply all on engineered wood trusses.
"SW" ei: Exhaust fan (2.0 sone) to exterior C/W timer SW. Switch
"RC" ei: Decorative timber truss over 184mm RC posts -D- fir.

Thank you in advance for your help:D
 
"2&BTR" ei: 2x12 2&BTR SPF floor joists @400mm on center. LUMBER GRADE
"BU" ei: 2x10 BU flush beams over 6x6 S4S D-fir posts. BUILT UP
"C/W" ei: Perforated perimeter drain pipe C/W (25mm) drain rock around perimeter. COVERED WITH
"DN 15 R" written just above exterior stairs DOWN 15 RISES
"14 EQ R DN" written just above interior stairs 14 EQUAL RISES DOWN
"FF" ei: "R28 FF insulation C/W .15mm poly vapor barrier. FOIL FACED
"FRR" ei: Line of fire separation wall with rated FRR. FIRE RESISTANT RATED
"OH" ei: Drop foundation walls for 2745mm OH garage doors. OVER HEAD
"MBFE" This is a leveled elevation below foundations. MAIN BASE FIELD ELEVATION (guess)
"S4S" ei: 2x10 BU beams over 6x6 S4S D-fir posts SURFACED FOUR SIDES
"SPF" ei: All wall framing material shall be SPF #2or better. SPRUCE/PINE/FIR (lumber species)
"STD" ei: 12.7mm STD sheating. 12.7mm STD ply all on engineered wood trusses. STANDARD
"SW" ei: Exhaust fan (2.0 sone) to exterior C/W timer SW. SWITCH
"RC" ei: Decorative timber truss over 184mm RC posts -D- fir. ???
 
Hi all,
I am reviewing plans for a house and I am unsure of some abbreviations.
English is not my mother tongue and the plans are from Canada

"2&BTR" ei: 2x12 2&BTR SPF floor joists @400mm on center. Number 2 grade & better lumber. 400mm metric spacing
"BU" ei: 2x10 BU flush beams over 6x6 S4S D-fir posts. Beam is up above ceiling
"C/W" ei: Perforated perimeter drain pipe C/W (25mm) drain rock ??
"DN 15 R" written just above exterior stairs 15 steps down
"14 EQ R DN" written just above interior stairs 14 steps down equal rise
"FF" ei: "R28 FF insulation C/W .15mm poly vapor barrier. Friction fit insulation, R28 thickness required
"FRR" ei: Line of fire separation wall with rated FRR.fire resistance rating
"OH" ei: Drop foundation walls for 2745mm OH garage doors. Over head
"MBFE" This is a leveled elevation below foundations.?? Something below final or finished elevation??
"S4S" ei: 2x10 BU beams over 6x6 S4S D-fir posts Smooth 4 sides
"SPF" ei: All wall framing material shall be SPF #2or better. Spruce, pine, fir lumber
"STD" ei: 12.7mm STD sheating. 12.7mm STD ply all on engineered wood trusses. Standard grade sheeting?
"SW" ei: Exhaust fan (2.0 sone) to exterior C/W timer SW. Switch?
"RC" ei: Decorative timber truss over 184mm RC posts -D- fir.rough cedar

Thank you in advance for your help:D
 
Thanks FB,
I did not know all of them? Guessed at the MBFE.
C/W that's a new one for me. I see E/W each way on plans.
 
FF foil faced instead of friction fit, I'll have to watch for that one.
 
Any drawing set should have an abbreviations list for this reason...if we don't know what the abbreviations are how can we review plans?
 
Any drawing set should have an abbreviations list for this reason...if we don't know what the abbreviations are how can we review plans?

FF on a lot of plans mean: Finished Floor

As far as insulation fb said Foil Faced and I said Friction Fit both could be correct. A key with abbreviations should be provided, agree.
 
I have come across a couple more abbreviations:
SS
2020-01-05-16-57-46.jpg

PL wall
2020-01-05-16-57-33.jpg

PD
2020-01-05-16-57-46.jpg
2020-01-05-16-57-17.jpg
 
SS ... structural steel? Or a tag that refers back to a column schedule.
PL ... plumbing?
PD ... window designation code. Similar to SS.
 
I saw this abbreviation the other day on a 2x from Canada: XC

tmurray, can you help us out? One of your provinces?
 
I saw this abbreviation the other day on a 2x from Canada: XC

tmurray, can you help us out? One of your provinces?
I'm at a loss. Some abbreviations are industry specific, so the type of drawing it is on can have some clues. Others are purely that designer or RDP's shorthand and a call to them is needed.
 
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