Wood Flooring - Wood Strip Gradiing

Wood Flooring - Grades of Strip
Species	Grain orientation	Size		Grades
Species	Grain orientation	Thickness	Exposed Width	First	Second	Third
Softwoods
Douglas fir	Edge	25/32	2-3/8, 5-3/16	B & better	C	D
Hemlock	Flat	25/32	2-3/8, 5-3/16	C & better	D	-
Southern pine	Edge & flat	5/16, 1-5/16	1-3/8, 5-7/16	B & better	C & better	D & No. 2 common
Hardwoods
Oak	Edge	25/32	1-1/2, 3-1/4	Clear	Select	-
-	Flat	3/8	1-1/2, 2	Clear	Select	No. 1 common
-	-	1/2	1-1/2, 2	Clear	Select	No. 1 common

Beech	Edge / Flat	-	-	-	-	-
Birch	Edge / Flat	25/32	1-1/2, 3/14	First	Second	-
Maple	Edge / Flat	3/8	1-1/2, 2	First	Second	-
Pecan	Edge / Flat	1/2	1-1/2, 2	First	Second	-

Hardwood Floor (water) Damage ... The water or moisture source can be detected by observing the wood strip formation. Hardwood flooring strips will cup or crown away from the moisture/water source. When wood strips are cupped upwards, the moisture/water was absorbed from the bottom of the floor, while hardwood strips that are crowned down are absorbing moisture/water from the top of the floor. 7.22.a Hardwood Flooring

Flooring Quantities
Nominal Size in Inches	Actual Size in Inches	Milling + 5% Cutting Waste	Multiple Area by	Floor Needed Per 1000 FBM
1 x 2	25/32 x 1-1/2	55%	1.55	1,550
2 x 2-1/2	25/32 x 2	42%	1.42	1,420
1 x 3	25/32 x 2-1/4	38%	1.38	1,380
1 x 4	25/32 x 3-1/4	29%	1.29	1,290
1 x 2	3/8 x 1-1/2	38%	1.38	1,380
1 x 2-1/2	3/8 x 2	30%	1.30	1,300
-	1/2 x 1-1/2	38%	1.38	1,380
-	1/2 x 2	30%	1.30	1,300


Finishing Nail Schedule (flooring)
Nominal Size in Inches	Finish Size in Inches	Kind and Size Nail	Lbs. of Nails Per 1000 FBM
1 x 2	25/32 x 1-1/4	8d cut	65-70
1 x 3	25/32 x 2-1/4	8d cut	60-65
1 x 4	25/32 x 3-1/4	8d cut	30-40
1 x 2	3/8 x 1-1/2	4d cut	18-20
1 x 2-1/2	3/8 x 2	4d cut	16-18