Douglas Fir & Hemlock
Introduction | Douglas Fir & Hemlock | Typical sizes | Quality & safety
All our wooden ladders are made from Douglas Fir or Hemlock.
Manufacturing benefits
- Compression parallel to grain is a measure of a piece of wood’s
ability to resist a crushing force that is applied to the ends of a piece
of wood. In-grade tests prove Hemlock & Douglas Fir Wood can carry the
load making them an excellent choice. - Studies prove that Hemlock holds nails and screws better than most other
species of wood. - Douglas Fir and Hemlock are stiff woods.
- Douglas Fir and Hemlock are hard to break.
- Strength to Span – The inherent strength of Douglas Fir and Hemlock
also means that builders can now safely and with confidence design and build
wooden products and structures - Douglas Fir and Hemlock can resist a crushing force
Wood sources
Globe Ladders & Manning Export only source wood from wood products association
members, recognised worldwide as a symbol of integrity, the Western Wood Products
Association’s grade stamp is a lumber buyer’s guide to lumber satisfaction.
This mark represents each WWPA Member mill’s commitment to consistently deliver
a wooden product which meets uniform quality standards, whether the wood is
intended for structural or appearance purposes.
Physical Properties
Common name | Botanical name | Density, g/cc | Density, lbs/cu.ft. | Modulus of rupture, air drykg/sq.mm. | Modulus of elasticity, air dry,kg/sq.mm. |
---|---|---|---|---|---|
Douglas fir (coast type) | Pseudotsuga taxifolia | 0.512 | 31.96 | 8.44 | 1357. |
Douglas fir (mountain type) | Pseudotsuga taxifolia | 0.446 | 27.84 | 6.72 | 981. |
Hemlock eastern | Tsuga canadensis | 0.431 | 26.91 | 6.06 | 846. |
Hemlock, mountain | Tsuga martensiana | 0.480 | 29.97 | 6.95 | 797. |
Hemlock, western | Tsuga heterophylla | 0.432 | 26.97 | 6.51 | 1015. |
Please click here for a complete list
of the products we supply.
Please contact us for a quotation.