How many standard 8 × 8 × 16 in. nominal CMU, including 3/8 in. mortar joints, are required for 100 sq ft of wall face before waste?
Estimating And Plan Reading
Question · Easy
A 32 ft long by 8 ft high CMU wall uses standard 8 × 8 × 16 in. units and 3/8 in. joints. With no openings and no waste allowance, how many blocks are required?
Question · Medium
Estimate standard 8 × 8 × 16 in. CMU for a 40 ft by 10 ft wall with one 4 ft by 8 ft opening. Deduct the opening at 1.125 blocks per sq ft and add 5 percent waste. How many blocks should be ordered?
Question · Hard
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How many standard modular bricks, including 3/8 in. joints, are typically estimated per square foot of wall face?
On a plan drawn at 1/4 in. = 1 ft-0 in., a CMU wall measures 4-1/2 in. long on the drawing. What is the actual wall length?
Using the common masonry estimating rule of thumb, about how many 70- to 80-lb bags of masonry cement are needed to lay 100 standard 8 × 8 × 16 in. CMU?
A CMU wall is 9 ft 4 in. high from the top of the foundation to the top of the wall. How many 8 in. courses of standard CMU are required?
What is the minimum average net-area compressive strength required by ASTM C90 for loadbearing concrete masonry units?
Unit Masonry
What are the typical specified (actual) dimensions of a nominal 8 × 8 × 16 in. CMU?
For hollow ASTM C90 units 8 in. and greater in nominal width, what is the minimum face-shell thickness?
Which ASTM specification covers solid facing brick used where color, texture, and chippage matter?
Which ASTM brick grade is required where the brick will be exposed to freeze-thaw while wet or in contact with the ground?
In running bond, each unit is typically lapped how far over the unit in the course below?
Why does TMS 402/ACI 530 require additional horizontal reinforcement when masonry is laid in stack bond?
What is the difference between a bed joint and a head joint?
What specified mortar-joint thickness is used with modular brick and CMU so the work stays on an 8 in. module?
Which finished mortar-joint profiles are considered the most weather-resistant for exterior masonry?
A soldier course is a row of brick laid with the:
In masonry terminology, a wythe is:
What is the primary purpose of a grouted bond-beam course in a CMU wall?
Unless the project documents require more, what is the usual minimum end bearing for a masonry or steel lintel on masonry?
Control joints are provided in CMU walls primarily to:
Expansion joints are used in clay-brick masonry primarily because fired-clay units:
When laying hollow CMU that will not be grouted in that course, mortar is commonly applied as:
When raising a masonry lead, why is racking back preferred over toothing?
Under ASTM C216, Type FBX facing brick is specified instead of Type FBS when the project needs:
Hollow clay brick used as facing or building brick is specified to which ASTM standard?
What are the specified (actual) dimensions of a standard modular brick (thickness × height × length)?
After the corner leads are built and checked, how is the intervening masonry kept straight and level?
TMS 602 cold-weather construction procedures begin when the ambient air temperature falls below:
During cold-weather masonry, which statement matches TMS 602?
Under the 2021 IBC as adopted in New Mexico, masonry design and construction are required to comply with which referenced standard?
Which New Mexico rule adopts the 2021 IBC as the state commercial building code that governs masonry on commercial projects?
On a detached one- and two-family dwelling in New Mexico, anchored brick veneer is regulated primarily by which adopted code?
The IBC/IRC '3-2-10' chimney rule requires a masonry chimney to extend at least:
TMS 602 requires clay or shale units to be wetted before laying when the initial rate of absorption (IRA) exceeds:
Using the TMS 602 unit-strength method, ASTM C90 units with a net-area strength of 2,000 psi laid in Type M or Type S mortar may be taken as having an f'm of:
Glass unit masonry panels are required by TMS 402/IBC to be laid with which mortar types?
What distinguishes a composite masonry wall from a masonry cavity wall?
What is the ASTM C270 minimum 28-day compressive strength of Type M mortar (property specification)?
Mortar And Grout
What is the ASTM C270 minimum 28-day compressive strength of Type S mortar (property specification)?
What is the ASTM C270 minimum 28-day compressive strength of Type N mortar (property specification)?
Type O mortar (about 350 psi) is the most appropriate choice for which of the following?
Which ASTM C270 mortar type is preferred for heavily loaded masonry below grade, such as foundations and retaining walls?
Which mortar type is the general-purpose choice for above-grade exterior and interior loadbearing masonry in ordinary exposure?
What is the common field proportion (portland cement : hydrated lime : loose damp sand by volume) for Type N cement-lime mortar?
For masonry shear walls that participate in the lateral-force-resisting system in Seismic Design Category D and higher, TMS 402 requires mortar to be:
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