CMP Exam 1| Unlimited Solved Questions with Answers |Latest 2024
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CMP
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CMP
CMP Exam 1| Unlimited Solved Questions with
Answers |Latest 2024
Wood Preservatives: Two Types - Natural and Chemical
Natural Preservatives - -Based off the species of Wood -Moisture resistant woods: Woods with natural decay resistance --> Cedar,
Redwood -Termite resistant --> bald cyp...
-Termite resistant --> bald cypress,redwood,eastern red cedar
What are termite resistant woods? - ✔✔1) Bald Cypress
2) Redwood
3) Eastern Red Cedar
What are natural decay resistant woods? - ✔✔1) Cedar
2) Redwood
Chemical Preservatives - ✔✔-No 'safe' chemical
-Protects decay and insects
Types of Pressure Treatments - ✔✔1) Pressure process
2) Non-Pressure Process
,Pressure Process Treatment (1) - ✔✔-More effective
-Pumps moisture out
-Pumps treatment into the wood in a cylinder machine
Non-Pressure Process Treatment (2) - ✔✔-Less effective
-Paint Coated
-Only a surface treatment
Wolmanized Lumber - ✔✔Pressure treated wood with cca preservatives to
provide structural protection from fungi and termites
3 Types of Wood Preserves - ✔✔1) Water Borne
2) Oil Borne
3) Creosote
Water Borne Preserve - ✔✔-Not in direct contact with soil
-Clean/odorless/paintable
-Residential
Oil-borne Preservatives - ✔✔-Oil based
-Any type of instillation but salt water. Cannot have contact with salt water.
Creosote Preservative - ✔✔-Heavy oil-like grease
, -Protect from decay/insect
-Widely used
-Tar like
Fire Retardant Wood - ✔✔Getting more common
-Used in:
1) Cabinets
2) Fire Door/jambs
3)Mills
Visual:
1)Stamps on Wood
2) Board color: All light red in color or purple line on edge
Dry Rot - ✔✔fungal timber decay occurring in poorly ventilated conditions in
buildings, resulting in cracking and powdering of the wood
-Have to have BOTH exposure to air and water
Lumber Terms - ✔✔Board, Dimension, Timber
Board - ✔✔1 to 1.5" thick
2"+ Wider
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