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CMP 124 Exam 2 Questions and Answers All Correct $11.99   Add to cart

Exam (elaborations)

CMP 124 Exam 2 Questions and Answers All Correct

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  • CMP 124

CMP 124 Exam 2 Questions and Answers All Correct 4 Functions of Mortar - Answer--bind -seal: moisure + air -compensate: size variation -esthetic: color + shadow lines Make up of Mortar - Answer--portland cement + lime -sand (clean washed) (well graded) -water (clean) What do we use m...

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  • September 1, 2024
  • 12
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • CMP 124
  • CMP 124
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CMP 124 Exam 2 Questions and
Answers All Correct
4 Functions of Mortar - Answer--bind
-seal: moisure + air
-compensate: size variation
-esthetic: color + shadow lines

Make up of Mortar - Answer--portland cement + lime
-sand (clean washed) (well graded)
-water (clean)

What do we use mortar with - Answer--bricks
-stones
-CMU's

mortar plastic state - Answer--workable
-water retentative
-bond quality
-consistent rate of hardening

mortar hardened state - Answer--appearance
-seals
-bond
-low efflorescence: white powder appearance
*how to clean: brush + water

Types of mortar - Answer-*M: 2500psi (best) (above below grade)
S: 1800psi (above below grade)
*N: 750psi (above grade)
O: 350psi (non load bearing)
K: 75psi (truck pointing)

*= most common

Mortar color - Answer-- depends on type of mortar
- time of tooling(stricking)
- pigments added
- aggregate color

Mortar mixing - Answer-hand shovel
mortar = 1

, sand = 3

handeling/ placing mortar - Answer-retempering: adding more water
*can only do with mortar not concrete

typical mortar joint size - Answer-3/8''

admixtures to mortar - Answer--calcium chloride: caution is using steel use liquid not
powder
-cold weather options: hot sand
*caution with hot water... flash set

moisture proofing (mortar) - Answer-parging: back plaster, tar, mastic

types of tooled mortar joints - Answer-- concave
- vee
- flush
- raked
- extruded
- beaded
- struck
- weathered

Sheathing and panels - Answer-exterior layer on the outside wall, but not final exterior
surface

sheathing insulation - Answer-- polystyrene (foam)
*expanded R- 3.9/inch
*extruded R- 5 (can go below grade
- wood fiber
*R- 2.9/inch
- other foam (polyisocyanurates) R- 7/inch

disadvantages of foam - Answer--no racking strength
-no structural strength(requires wind bracing) (steel bands)(cut in boards)
-thickness of material (Jumb extensions)

Panel materials - Answer--plywood: thin sheets laminated togethers
-composite: veneer faces bonded to wood core
-non-veneered: OSB, particle board, wafer

plywood construction - Answer--thin sheets laminated
-adhesives: waterproof or water resistant
-odd number of piles
-construction grade plywood = structural

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