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abbreviations in plan checking

M

Mac Moonfire

SAWHORSE
Joined
Aug 2, 2019
Messages
95
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
 
Mac Moonfire said:
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
Click to expand...
 
"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. ???
 
Mac Moonfire said:
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
Click to expand...
 
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.
 
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?
 
Chrisjoneill said:
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?
Click to expand...

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?
 
Pcinspector1 said:
I saw this abbreviation the other day on a 2x from Canada: XC

tmurray, can you help us out? One of your provinces?
Click to expand...
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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