Laminated Veneer Lumber (LVL)
FSC
CERTIFICATE
LVL (laminated veneer lumber) is a technologically enhanced and improved high strength structural wood-based material. The complex technological process results in a homogenous material with unique performance. LVL properties significantly exceed those of solid wood, glulam and high-
grade timber.
The main raw material used to produce LVL is a wood veneer of various grades (wood species and mixtures thereof differ from manufacturer to manufacturer). Term “LVL” was introduced in the 1960s by Wayerhauser (US company) who had developed this product and launched the first LVL production line ever. Now LVL is rightfully considered to be the best wood material in terms of technology, reliability and performance. Its outstanding properties place LVL among the most advanced and technological products currently used in construction
Technical Parameters of Ultralam
Note: For the production of special batches of Ultralam LVL with high-grade veneer layers (according to the specification), design strength values can be increased by 15 – 20%.
CONDITION
RELATIVE TO THE GRAIN
Rb
Rs
R
X
I
23,5
22,5
22
3,8
1,7
16,5
—
2,6
1,1
edgewise along the grain
flatwise along the grain
edgewise along the grain
across the grain
perpendicular to the plane of veneer sheets
edgewise along the grain
across the grain
edgewise along the grain
across the grain
Bending
Bending
Compression
Compression
Compression
Tension
Tension
Shear along the glue line
Shear along the glue line
39
45
30
5
5
25
—
2,6
1,1
27
35,5
25,5
4,3
1,9
26,5
—
2,6
1,1
26,5
27,5
23,5
3,5
1,7
22,5
0,7
2,6
1,1
19,5
24
19,5
6,8
1,9
17,5
—
2,6
1,1
Product Line
Ultralam R
27, 30, 33, 36, 39, 45, 51, 63, 75, 90
Thickness, mm
Width (height), mm
64, 89, 100, 120, 150, 160, 200, 220, 240, 250, 260, 300, 360, 400, 420, 450, 500, 600, 1250
Length, mm
From 2 500 to 20 500 (gradation - 500 mm)
Ultralam X и IX
Thickness, mm
27, 30, 33, 36, 39, 45, 51
Width (height), mm
64, 89, 100, 120, 150, 160, 200, 220, 240, 250, 260, 300, 360, 400, 420, 450, 500, 600, 1250
Length, mm
From 2 500 to 20 500 (gradation - 500 mm)
Ultralam I
Thickness, mm
27, 30, 33, 36, 39, 45, 51, 63, 75
Width (height), mm
64, 89, 100, 120, 150, 160, 200, 220, 240, 250, 260, 300, 360, 400, 420, 450, 500, 600, 1250
Length, mm
From 2 500 to 20 500 (gradation - 500 mm)
MOE Е, MPa. Strain along the grain
Rb
Rs
R
X
I
15 600
14 000
11 000
12 700
16 000
Service conditions for Ultralam based structures
Note: air humidity is allowed to differ from the tabulated value if it persists for no longer than two weeks.
The products delivered to the Customer should bear a mark of the allowable service class
SERVICE
CLASS
MOISTURE CONTENT
OF STRUCTURES
DURING THE USAGE, %
SERVICE
CONDITIONS
Relative air
humidity, %
40-60
SERVICE
CONDITIONS
Air temperature,
°C
20±5
SERVICEABILITY
MEASURES
Chemical protection is not required
2
20±2
60-90
20±5
3
> 22
NO LIMIT
NO LIMIT
10±2
1
Structural and chemical protection
is required
Structural and chemical protection
is required
Types of Ultralam
Ultralam
Description
Application
All veneers are located parallel to grain, G1–G2 grades (primary G1)
RS / E15
Load-bearing structures
R / E14
Load-bearing structures
All veneers are located parallel to grain, G1–G2 grades (primary G2)
X
Load-bearing structures
There are some crossplies, G2–G3 grades structures
I / E13, E12
Both parallel and crossply veneers are possible,
G3–G4 grades are possible, G3–G4 grades
Filler structures and parts for doors and furniture manufacturing
Ultralam advantages
Unique LVL Ultralam™ properties afford to list it among the most prospective materials used for construction.
The application of LVL Ultralam™ covers a wide range of construction and not construction areas.
̌✓ Environmentally friendly engineered wood material with unique performance.
✓ Durability and long lasting appeal of Ultralam™ -based structures.
✓ Unchangeable performance over the entire service life.
✓ Homogenous material with unchangeable mechanical properties lengthwise.
✓ Consistent geometry and physical properties regardless of seasonal factors, environmental variations and climatic conditions.
✓ High accuracy of adjacent elements.
✓ High bearing capacity.
✓ Resistance to corrosive agents.
✓ Optimal performance/weight ratio.
✓ High bio and fire resistance.
✓ High thermal and sound insulating properties.
✓ Material is easy to process with any cutting instruments.
✓ Material is not subject to deformations caused by humidity variations and has low values of natural shrinkage.
✓ There are almost no service costs related to LVL usage.
✓ Convenient, easy and fast installation of LVL products.
✓ With an adequate strength reserve, reinforced foundations and bearing structures are not required.
✓ Price of Ultralam™ products do not depend on their length and cross sections.
✓ Easy mechanical processing and preservative treatment.
✓ Besides its high physical and mechanical properties, laminated veneer lumber fully retains the appearance
of natural wood which allows to use LVL-based products and structures in interior applications without
additional finishing.