Notes, summaries, assignments, exams, and exercises for Geology for University

Wind Dynamics: Key Factors

The Pressure Force

The wind that originates and is called gradient wind. Wind speed is directly proportional to the pressure difference between points.

The Coriolis Force

This force is a result of the Earth's rotation. A mass of air originating from the north, through inertia, retains its direction and speed along the meridian. However, an observer in the Northern Hemisphere, moving with Earth's rotation, will find this air mass increasingly deflecting to the right of its original direction. Conversely, in the Southern Hemisphere, the deflection is to the left. This phenomenon is the effect of the Coriolis force.

The Friction Force

Air masses close to the ground constantly experience friction from the Earth's surface. The...

Key Concepts in Geology

(exam3)1:superposition=the oldest on the bottom, youngest on top/2:original horizontality=sedimentary layers/lava flows are deposited as flat layers/3:lateral continuity=rocks extend in all directions until they reach the edge of a basin or pinch out/4:cross-cutting=faults and fractures are younger than the rocks they cut through/5:unconformities=missing time/6:inclusions=chunks of weathered rock are older than the rock they are contained in/7:continental drift=Alfred Wegener/8:Alfred Wegener=Pangaea/9:not a major tectonic plate/Juan de Fuca Plate/10: lithosphere=composed of crust and upper mantle/11:continental crust=composed of granite and basalt/12:transform boundary=one colliding plate will be forced because of difference...

Mesopotamian Architecture: Materials and Techniques

Bricks

• Crude (Adobe): Sun-dried and placed with a layer of properly diluted clay or mortar (30x40cm x 5.5-11cm).
• Thick Paste: Placed before complete drying. Early tiers included "amulets." Drying was facilitated by drainage channels within the mass, supported by wooden braces.
• Cooked: Used in areas requiring greater protection.
• Cooked and Glazed: Coated with crushed quartz dust or heat-treated materials; typically used for exterior facing.
• Plano-convex: Rectangular (20x30cm) with a rounded top and digital prints or stripes for grip. Placed in a herringbone pattern.
• Binocular and Conical: Taco-shaped with square, rectangular, or circular sections.

Structural Elements

Stone: Used as slab-shaped veneer,...

Key Concepts in the Construction Sector

The Construction Industry Defined

The construction industry encompasses a set of companies engaged in activities designed to carry out work, such as contracts for housing, non-housing, industrial, and civil projects.

Evolution of Construction Practices

Traditionally, construction has been very artisanal. However, it has been changing for some time, albeit with little significant progress until the introduction of modern technology. This includes:

• On-site Construction: Introducing modern technology to support work tools and materials, increasing project productivity.
• Partially Industrialized Construction: Involves the prefabrication of components that are then installed in the final structure.
• Highly Industrialized

Urban Planning and Architectural Glossary

Public Spaces and Infrastructure

• Greenwatch: Ground surface primarily for recreation or pedestrian circulation, composed of plants and complementary elements.
• Street: A vehicular route that connects to other roads, typically including sidewalks between two private properties.
• Calzada (Roadway): The portion of a path designated for vehicular transit.
• Sidewalk: The section of a street located between the curb or edge of the roadway and the property line.
• Public Space: Areas designated for national circulation, public use, and recreation.
• Passage: A path intended for pedestrian traffic, occasionally used for vehicle circulation.
• Trail: The paved portion of a sidewalk.
• Via: A space designated for transit.

Building

Understanding Masonry Construction Techniques

Dry Stone Masonry

This type of masonry involves stacking rubble stones without using any mortar, or at most, using mud/clay. The stones are worked and carefully placed to fit closely together, ensuring that joints and gaps are minimal. These walls can be built with a slight incline or batter, typically between 1/7 and 1/5 of their height, for stability.

Mortared Masonry Walls

These walls are constructed using manufactured or natural stones laid without specific shaping, but employing mortar for bedding the stones and filling the joints. Key considerations include:

• Ensuring each rubble stone rests stably on the one below it.
• Trimming stones as needed to achieve a good fit.
• Using smaller stones, known as

Concrete in Adverse Situations

Concreting in Cold Weather

Precautions

• Fresh concrete temperature must be above 5°C.
• Ensure no contact between concrete and elements with temperatures below 0°C.
• Maintain concrete temperature above 5°C for one to three days.

Measures

• Modify dosage.
• Use high early-strength cement and hardening accelerators.
• Increase cement dosage beyond standard levels.
• Heat treated components.
• Heat water to 40°C and prolong mixing time.
• Heat water above 40°C and pour before adding cement and aggregates.
• Heat the aggregate or sand.
• Heat-treat the concrete placed on-site.
• Protect concreted surfaces.
• Delay formwork removal when the material acts as insulation.
• Create an artificial environment.

Note: In cold periods, setting and hardening are...

Understanding Earthquake Magnitude and Intensity

The moment magnitude is determined from an estimate of the area that breaks along a fault plane during the earthquake, the amount of movement or slippage at failure, and the stiffness of the rocks near the focus of the quake.

The intensity of an earthquake is often indicated by the Modified Mercalli Scale, which is a qualitative measure. The intensity of an earthquake is usually displayed on a map.

Seismic Waves Explained

When a fault is generated, the rocks break suddenly and violently, releasing energy in the form of seismic waves.

P Waves

The P waves, also called compressional or primary waves, are the most rapid of the two main types. They can travel through a solid, liquid, or gas. P waves travel...

Fundamentals of Photovoltaic Module Performance

What is Peak Power of a Photovoltaic Module?

Peak power is the maximum output power, measured in Watts (Wp), that a photovoltaic panel produces under standard test conditions (STC). STC requires maximum solar illumination, defined as approximately 1 kW/m² radiation, which typically occurs around solar noon on a sunny day.

Monocrystalline vs. Polycrystalline Solar Cells

Photovoltaic modules are composed of either monocrystalline or polycrystalline silicon solar cells. The primary difference between these types lies in their manufacturing process.

Manufacturing Monocrystalline Cells

Monocrystalline silicon cells are obtained from very pure silicon. The manufacturing process involves:

1. Melting the silicon