Abies Magnifica (California red fir)


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Scientific Name
Abies magnifica

Trade Name
California red fir

Family Name
Pinaceae

Common Names
California red fir, Fir, Golden fir, Red fir, Shasta fir, Shasta red fir, Silvertip, Western fir, White fir

Regions of Distribution
North America

Countries of Distribution  [VIEW MAP]
United States

Common Uses
Beams, Boxes and crates, Building construction, Cabin construction, Casks, Concrete formwork, Construction, Decks, Decorative plywood, Dressed boards, Factory construction, Form work, Foundation posts, Framing, Heavy construction, Joists, Light construction, Lumber, Packing cases, Plywood, Porch columns, Pulp/Paper products, Pulpwood, Rough boards/dimension stock, Rough construction, Structural plywood, Utility plywood

Environmental Profile

Abundant/Secure
Questionable
Widespread
May be rare in some parts of its range, particularly at the periphery
Globally secure
Data source is Nature Conservancy
Abundant

Rank of relative endangerment based primarily on the number of occurrences of the species globally

Distribution Overview
In the U.S. and Canada, Subalpine Fir grows naturally in mountains from central Yukon and the eastern parts of southeast Alaska south through Alberta and British Columbia. Also, from Washington, Oregon, Idaho and western Montana south to central Colorado southern New Mexico and southeast Arizona. Locally, it can be found in northeast Nevada and northwest California.

Heartwood Color

Brown
White
Yellow
Purple
Red
Whitish
Same as sapwood
Light buff to yellowish brown
Light brown

The latewood portion of the growth ring is usually tinged with a lavender, roseate, or a reddish brown color

Sapwood Color

Red
Brown
Yellow
White
Color not distinct from heartwood

Grain

Even
Straight

 

Straight
Even

Texture

Coarse
Medium
Medium coarse to coarse

Natural Durability

Perishable
Non-durable
Very little resistance to decay
No natural resistance

Odor

Has an odor
No specific smell or taste
May have a slightly disagreeable smell when green

Kiln Schedules

12 – B5 (4/4);T12 – B4 (8/4) U.S

Drying Defects

Uneven Moisture Content
Ring Shakes
Splitting
Wetwood
Uneven moisture content
Shakes
Expect splits

Ease of Drying

Fairly Easy
Easy

Tree Size

Tree height is 20-30 m
Tree height is 30-40 m
Trunk diameter is 100-150 cm

Boring

Fair to good results
Good results

Gluing

Very Good to Excellent Results
Fairly Easy to Very Easy
Excellent gluing properties

Mortising

Fair to Good Results
Good mortising properties

Moulding

Fair to Good Results
Fairly Easy to Very Easy
Good moulding properties

Nailing

Very Good to Excellent Results
Fair to Good Results
Holds nails well
Good resistance to splitting while nailing

Planing

Fair to Good Results
Fairly Easy to Very Easy
Good planing properties

Resistance to Impregnation

Resistant sapwood
Resistant heartwood
Difficult to treat with preservatives

Screwing

Very Good to Excellent Results
Fairly Easy to Very Easy
Very good screw holding qualities
Excellent screwing properties

Turning

Fair to Good Results
Good results

Strength Properties

Surfaces may dent or scratch easily
Soft
Max. crushing strength = low
Bending strength (MOR) = medium

Numerical Data

Item Green Dry English
Bending Strength 5684 10241 psi
Crushing Strength 323 598 psi
Hardness 490 lbs
Impact Strength 21 24 inches
Maximum Crushing Strength 2705 5356 psi
Shearing Strength 1019 psi
Stiffness 1147 1465 1000 psi
Toughness 142 inch-lbs
Work to Maximum Load 6 9 inch-lbs/in3
Specific Gravity 0.29 0.26
Radial Shrinkage 4 %
Tangential Shrinkage 8 %
Volumetric Shrinkage 11 %
Item Green Dry Metric
Bending Strength 399 720 kg/cm2
Crushing Strength 22 42 kg/cm2
Hardness 222 kg
Impact Strength 53 60 cm
Maximum Crushing Strength 190 376 kg/cm2
Shearing Strength 71 kg/cm2
Stiffness 80 103 1000 kg/cm2
Toughness 163 cm-kg
Work to Maximum Load 0.42 0.63 cm-kg/cm3
Specific Gravity 0.29 0.26
Radial Shrinkage 4 %
Tangential Shrinkage 8 %

References
Boone, R.S., C.J. Kozlik, P.J. Bois, E.M. Wengert. 1988. Dry Kiln Schedules for Commercial Hardwoods – Temperate and Tropical. USDA, Forest Service, General Technical Report FPL-GTR-57, Forest Products Laboratory, Madison, Wisconsin.

Little, E.L. 1980. The Audobon Society Field Guide to North American Trees – Western Region. Published by Alfred A. Knopf, New York.

Panshin, A.J. and C. deZeeuw. Textbook of Wood Technology. McGraw-Hill Series in Forest Resources. McGraw-Hill Book Company, New York.

USDA. 1987. Wood Handbook:Wood as an Engineering Material. Agriculture Handbook No. 72. United States Department of Agriculture, Forest Service, Madison, Wisconsin.

USDA. 1988. Dry Kiln Operators Manual, Preliminary Copy. Forest Service, Forest Products Laboratory, Madison, Wisconsin.

Western Wood Products Association. 19__. Softwoods of the Western USA. Published and Distributed by the Western Wood Products Association, Yeon Building, 522 S.W. Fifth Avenue, Portland, Oregon.