Notes, summaries, assignments, exams, and exercises for Geology for Other courses

Pitched Roof Drainage and Protection

Gutter Slopes: Under and above eaves min. 0.5%, above the cornice 0.66%, inter-roof and behind the parapet wall 1%. Expansion of gutters (galvanized, copper, titanium zinc) has a maximum length of 15 m.

Galvanic Corrosion: This occurs when two different metals are in electrical contact in the presence of an electrolyte (like water). In slopes, when rainwater runs over or stays between dissimilar metals, such as aluminum flashing and copper gutters, the less noble metal (anodic) corrodes faster, while the more noble metal (cathodic) is protected.

Measures Against Snow Falling

• Snow guards (catchers).
• Statically prepared structures.
• Prevention of ice dams and icicles at the eaves via good thermal insulation (double-

...

Rigid Retaining Structures

Rigid structures have a rigid and stiff body. They move as a unit.

Types of Rigid Structures

• Gravity Walls

  These walls rely on their mass to resist lateral earth pressure.

  • Designed to avoid sliding and overturning.
  • Examples: In situ concrete walls, Masonry walls (often requiring drainage between the bricks), Rockfill.

• Cantilever Walls

  These walls use a structural stem and base slab to resist pressure.

  • Saves concrete compared to gravity walls.
  • Requires steel reinforcement.
  • Examples: Precast concrete walls, Green retaining walls.

• Counterfort Walls

  These walls use vertical supports (counterforts) connected to the stem and base.

  • The counterforts help support the bending moments.
  • Often used with reinforced earth (geosynthetics).
  • A toe

...

Surface Water Resources and Management

Surface water bodies are the most important source of water supply. A prominent feature of these resources is their variability, which is highly dependent on irregular rainfall patterns.

Rivers: Characteristics and Flow Regime

The river network in Spain (approximately 70,000 km) often carries a relatively small volume of water, and its flow rate is highly irregular. Furthermore, rivers receive large volumes of spills, resulting in many contaminated sections.

Factors Characterizing River Flow

The river regime is characterized by several factors:

1. Flowrate: The amount of water flowing through a river at one specific point. It is measured in m³/s.

Flow = A · P · v

Irregularity: The ratio between the average annual...

Guide Wall Functions and Excavation Methods

The Role of the Guide Wall

• Locate and guide the excavation process.
• Support the excavation at the ground surface.
• Raise the level of the bentonite slurry (the pressure will increase the external pressure to compensate for the internal pressure).
• Support and guide the steel reinforcing cage.

Excavation Equipment and Tools

• Clamshell bucket or hydraulic grab: Used in soils.
• Boring bit: Used in rocks.
• Hydromill / Hydrofraise: Used in both soils and rocks.

Hydromill and Hydrofraise Technology

• Continuous drilling: The soil is removed as the process gets deeper into the ground.
• Two cutter drums: It penetrates concrete, though this causes erosion on the cutter drums and should be avoided.
• Reverse slurry circulation: Slurry

...

Sustainable Basis: Insulation Layers

The first layer, which supports the ongoing support layer, consists of finishing materials such as maximbrado, ceramic, or phenolic boards. These are fireproof wood panels, often treated (high-density wood core reinforced with cellulose).

Thermal Insulation

In unventilated roofs, thermal insulation plates are typically placed above the first layer (often maximbrado), fixed to each other and to the base.

Protection and Finishing

This final layer prevents water entry, providing a waterproof interior. Common finishing materials include:

• Tiles
• Slate
• Metal sheets (chapas)
• Fiber cement
• Fiberglass
• Asphalted cardboard

Water Evacuation Systems

The roof's inclination facilitates water evacuation. Without proper drainage, water...

Aerosol Particles in Indoor Air

Indoor air quality is affected by various aerosol particles, including:

• Heavy metals
• Man-made mineral fibres (MMMF)
• Natural fibres (asbestos)
• Tobacco smoke
• Combustion products from stoves, fireplaces, and chimneys

Definition of Aerosols

An aerosol is a suspension of solid and liquid particles of different shapes and chemical compositions in the air.

Heavy Metals and Bioaccumulation

Common heavy metals include mercury (Hg), cadmium (Cd), arsenic (As), chromium (Cr), thallium (Tl), and lead (Pb).

• Heavy metals are natural components of the Earth's crust.
• They cannot be degraded or destroyed.
• They enter human bodies via food, drinking water, and air.
• Heavy metals tend to bioaccumulate (their concentration in a biological organism

...

...

Weather: Refers to the various phenomena occurring in the atmosphere of Earth or another planet.

Climate: Represents the set of mean values of weather conditions that characterize a region. These average values are obtained by collecting weather information over a sufficiently long period.

When discussing the world, an area or region, or a particular locality, we refer to global climate, zonal, regional, or local climate (microclimate), respectively.

Factors Modifying Climate

• Latitude: The angular distance between the Equator and a point on the planet. Latitude is measured in degrees (°), between 0 and 90, and can be represented as positive (North) or negative (South).
• Altitude: The vertical distance from a given origin, typically the average sea

...

Thermal Non-Nuclear Power Plants

These plants need the mechanical energy necessary to drive turbines that are connected to the generator rotor. The energy comes from the thermal water vapor pressure (due to the movement of water molecules) after heating in a boiler. The fuel used to produce water vapor determines the type of power plant: oil, natural gas, or coal.

Combined Cycle Power Plants

In combined cycle power plants, electricity is obtained through two combined cycles: the conventional thermal power cycle and another cycle in which air and gas are used. For the air and gas cycle, a gas turbine that includes a compressor is used. This compressor compresses the incoming air, which mixes with the gas prior to its combustion, through which electricity...

Water Resource Management in Spain

Water Use and Challenges in Spain

Water is an essential resource for human activities in Spain. Agricultural irrigation alone consumes 80% of the total water supply. Energy production, particularly hydroelectric power, and industrial demand for electricity also contribute significantly to growing consumption. Urban consumption has increased, now accounting for 14% of the total.

The discharge of wastewater, originating from agricultural and livestock activities, into rivers leads to environmental deterioration.

Key Problems in Water Management:

• Limited Funding: Insufficient funds are available for water production and infrastructure.
• Seasonal Irregularity: Spanish rivers are characterized by significant seasonal

...