The heavy weight of large dozers generally makes them LESS suitable for:
Cutting slopes
-Heavy dozer can cut up a slope.
On a well-compacted fill slope, a scraper should not get closer than-— to the edge.
2 feet
When operating a backhoe travel and work with the front bucket:
As low as possible
When using a backhoe’s front bucket for hauling,backfilling or transporting gravel to a trench:
Keep the hoe arm in its locked position.
The main difference between a backhoe and a track hoe ( or excavator) is that the track hoe operates on tracks and can swing— degrees to dump.
360
Track homes are also more powerful, heavier and stable than comparable other backhoes.
If it takes a loader two buckets to fill a waiting truck bed:
Dump the first load in the forward area of the truck bed and the second load toward the center
- This is the same principle of how to load a wheelbarrow too: keep the weight of the load forward.
In general the fastest and most stable drum roller is the:
Smooth drum vibratory roller
The practice of sustainable design and construction is also known as:
Green building
A series of international standards ISO 14020 distinguish three types of environmental labels that set out expectations for comprehensiveness and reliability of sustainable materials and products information. These include all of the following except:
Environmental laws, Rules and / or regulations
- Type1: Ecolabels . independent third party certification of environmental performance.
-Type 2: Self- Declared Environmental Claims. Claims provided by product manufacturer without independent verification.
-Type 3: Environmental Impact Label. The most comprehensive assessment of products and theirs environmental impacts. The information is independently verified, but the label may be prepared by the manufacturer.
The total carbon-related greenhouse gas emissions associated with a building is known as:
Embodied Carbon
In the USA, the Most widely applied system for evaluating building sustainability is known as:
LEED certification
-LEED: Leadership in Energy and Environmental Design.
The main reason for describing categories of occupation the IBC is:
To establish different levels of life safety hazard in buildings
The -— or bar chart is a series of horizontal bars representing the time schedule for various tasks in a project.
Grantt
- Henry Grantt is credited for developing this type of bar chart in 1910-1915.
The critical path method for a project is the sequence of activities representing —in which a project can be completed.
The least amount of time and cost
Which of the following particles is FLAT rather than roughly spherical in shape?
Clay
Which of the following soil types has the highest allowable foundation pressure and lateral bearing ratings?
Crystalline bedrock
-Foliated in geology refers to repeated layers in metamorphic rock in rock such as salte, schist and gneiss
Most construction excavations require some form of removal of water from the excavation or surrounding areas.
The most common method of dewatering is:
Pumping as water accumulates in sump pits
-— are similar to tie backs and are used to hold jointed rock formations in place around an excavation.
Grouched rock anchors
-Applications include bridges, hydro - electric structure,dams, mining, refining and building.
Most shallow foundations consist of:
Simple concrete spread footing s
Most shallow foundations consist of:
Simple concrete spread footings
In cold climate, footings must be placed:
Below the frost line
A—— is a type of foundation that is similar to a column footing, but it extends downward through layers of unsatisfactory earth beneath a structure until it reaches a more suitable layer, where it is belled at its lowest point.
Caisson
In places where very strong earthquakes are common you might expect to see large buildings placed upon:
Base isolators
-One type of base isolator consists of a multilayered construction of rubber and steel plates. A base isolator decouples the superstructure. Rubber bearings, friction bearings,ball bearings,spring systems and other components are in use.
Bentonite waterproof material are made from:
A naturally occurring and highly expansive clay
-Bentonite is contacted by moisture it swells to many times its dry volume. It is often used in oil-and -water well draining to seal the borehole walls, to remove drill cutting and to lubricate the cutting head.