Chapter 9

Both granite and limestone are sedimentary rock. Select one: True False

False, granite is igneous

Heavier weight CMU blocks have lower compressive strength. Select one: True False

False, higher

Granite is not suitable for exposure to severe weathering. Select one: True False

False, is suitable

Heavier weight CMU blocks are less durable. Select one: True False

False, more durable

For limestone, the strength and porosity do not vary with density. Select one: True False

False, porosity with density

Limestone normally has a smooth finish. Select one: True False

False, textured finish

Mold costs for producing special units are very high when spread across the number of units require for a medium to large building- mass produced. Select one: True False

False, units are low

Rock formed by the solidification of magma

Igneous Rock

Squared stonework

ashlar

A plane in a building stone that was horizontal before the stone was cut from the quarry; also called grain.

quarry bed

Excess water found in rock at the time of its quarrying.

quarry sap

A mortar joint in which mortar has been removed from the portion of the joint closest to the surface of the masonry.

raked mortar joint

Laid without continuous horizontal joints

random

Unsquared stone blocks

rubble

A sedimentary rock formed from sand; classified by ASTM C119 in the Quartz-Based Dimension Stone group.

sandstone

Reinforcing decreases compressive strength, resistance to cracking and resistance to lateral forces. Select one: a. True b. False

False

Quartz-based stones can be easily polished. Select one: True False

False, NOT polished

Marble cannot be easily polished. Select one: True False

False, can be easily polished

As to selecting stone, past history can be a good predictor of future performance in different applications and environments. Select one: True False

False, in similar applications

In wood, water held within the cavities of the cells. See also BoundWater.

Free water

Fine-grained sedimentary rock that has no planes of cleavage or sedimentation along which it is likely to split.

Freestone

A rock created by the action of heat or pressure on a sedimentary rock or soil.

Metamorphic Rock

Rock formed from particles deposited by wind and water

Sedimentary

Rock formed from materials deposited as sediments, such as sand or sea shells, which form sandstone and limestone, respectively.

Sedimentary Rock

After curing, ground-face block surface is ground smooth, creating a polished terrazzo-like surface. Select one: True False

True

Attachment system carries the weight of the panels. Select one: True False

True

Both quartz-based and limestone are sedimentary rock. Select one: True False

True

Concrete masonry reinforcing increases compressive strength, resistance to cracking, and resist to lateral forces. Select one: True False

True

During the curing process, the split-face blocks are split with knife-like blades. Select one: True False

True

Granite can accept many finishes, including polished. Select one: True False

True

Granite is nonporous, strong and durable. Select one: True False

True

Heavier weight CMU blocks are better acoustical isolation between adjacent spaces. Select one: True False

True

Lighter weight CMU blocks are less expensive to transport and lay. Select one: True False

True

Lighter weight CMU blocks have lower thermal conductivity with higher fire-resistance rating and potentially better building envelope thermal performance. Select one: True False

True

Marble is metamorphic rock and can be easily polished. Select one: True False

True

Marble is recrystallized limestone. Select one: True False

True

Quartz-Based rock is a type of sedimentary rock. Select one: True False

True

Threes ways to select stone include past history, microscopic analysis, and laboratory testing. Select one: True False

True

When laying CMU, corner leads are laid first. Select one: True False

True

Standard nominal CMU size is: Select one: a. 8" x 8" x 16" b. 7.2" x 13" x 8" c. 8.5" x 8" x 16" d. None of the above

a. 8" x 8" x 16"

Which of the following is not a decorative CMU? Select one: a. Channel bond-beam block b. Split face block c. Ribbed-face block (also known as split-rib) d. Slump block

a. Channel bond-beam block

If you see a jet burner or a diamond wire cutting stone at a quarry, which stone is most likely being cut? Select one: a. Granite b. Sandstone c. Marble d. Slate

a. Granite

Concrete formulated so as to contain a large percentage of gas bubbles as a result of a chemical reaction that takes place in an atmosphere of steam.

autoclaved aerated concrete (AAC)

A sandstone that is gray to blue-gray and splits readily into thin slabs; classified by ASTM C119 in the QuartzBased Stone group.

bluestone

A brownish or reddish sandstone; classified by ASTM C119 in the Quartz-Based Stone group.

brownstone

Building stone is classified into _____ groups according to ASTM C199. Select one: a. 4 b. 3 c. 6 d. 9

c. 6

Rebar can be placed: Select one: a. Horizontally b. Vertically c. Both a) and b) d. None of the above

c. Both a) and b)

Which one of the following is false about the granite group? Select one: a. Has many colors b. Nonporous c. Metamorphic rock d. Suitable for exposure to severe weathering, ground contact

c. Metamorphic rock

Dry-stacked masonry is bonded together: Select one: a. by inserting rebar and grouting the cells. b. by setting the blocks in a drier mortar than usual. c. by adding structural cement plaster to its surfaces. d. with metal clips.

c. by adding structural cement plaster to its surfaces.

A block of hardened concrete, with or without hollow cores, designed to be laid in the same manner as a brick or stone; a concrete block.

concrete masonry unit (CMU)

Laid with continuous horizontal joints

coursed

Which pair are the major metamorphic stones used in building construction? Select one: a. Limestone and sandstone b. Granite and pumice c. Limestone and granite d. Marble and slate

d. Marble and slate

Building stone cut to a rectangular shape.

dimension stone

Slate is soft and absorbent. Select one: True False

false, dense/hard, and nonabsorbent

Flat stones used for paving or flooring.

flagstone

A hollow masonry unit made of glass.

glass block

In wood, the direction of the longitudinal axes of the wood fibers or the figure formed by the fibers. In stone, see Quarry bed.

grain

Steel reinforcing that runs horizontally in a masonry wall in the form of either welded grids of small-diameter metal rods or larger conventional reinforcing bars.

horizontal reinforcing

Rock developed in a molten state

igneous

A metamorphic rock formed from limestone by heat and pressure

marble

Formerly igneous or sedimentary rock transformed by heat and pressure

metamorphic

Mortar used for the pointing of masonry joints, generally of relatively low strength and with good workability and adhesion characteristics.

pointing mortar

A metamorphic form of clay, easily split into thin sheets.

slate

The cracking or flaking of the surface of concrete or masonry units, caused, for example, by freeze-thaw action, corroding reinforcing, or pointing mortars that are harder and stronger than the mortar deeper in the masonry joint.

spalling

A hollow clay masonry unit with glazed faces.

structural glazed facing tile

Which of the following joints is laid without continuous horizontal joints? Select one: a. Random b. Ashlar c. Coursed d. Rubble

A. Random

A dense and durable igneous rock, usually dark gray; classified by ASTM C119 in the Granite group.

Basalt

A concrete masonry unit, usually hollow, that is larger than a brick.

Concrete block

Igneous rock with visible crystals of quartz and feldspar.

Granite

A torch that burns fuel oil and compressed air, used in quarrying granite.

Jet burner

A device for lifting a block of stone by means of friction exerted against the sides of a 2hole drilled in the top of the block.

Lewis

A sedimentary rock consisting of calcium carbonate, magnesium carbonate, or both.

Limestone

Bricks are molded to shape, building stone extract from the earth in rough blocks and then cut and carved to shape. Select one: True False

True

CMU are manufactured by vibrating a stiff concrete mixture into metal molds, wet blocks are turn onto a rack (molds resued-1000 units per hour). Select one: True False

True

Slate is a form of metamorphic rock. Select one: True False

True

Slate is dense, hard, nonabsorbent metamorphic rock. Select one: True False

True

Split-face block has two or more blocks casting as a single unit. Select one: True False

True

Stone and concrete masonry are similar to brick masonry, in concept- both involve the stacking of masonry units in mortar. Select one: True False

True

Stone masonry patterns could be either laid in mortar (like bricks) or mechanically fastened in large sheets to a support system. Select one: True False

True

Stone panels mechanically attached to building frame. Select one: True False

True

Molded components, often highly ornamental, made of fired clay, designed to be used in the facades of buildings.

structural terra cotta

A richly patterned, marblelike form of limestone; classified by ASTM C119 in the Other Stone group.

travertine

Stone masonry laid without continuous horizontal joints; random.

uncoursed stone masonry