civil

name	civil
description	Civil infrastructure and construction
license	MIT
compatibility	opencode
metadata	{"audience":"engineers, contractors, project managers","category":"engineering"}

What I do

• Provide civil infrastructure domain knowledge
• Explain construction methods and materials
• Guide on building codes and permits
• Assist with site development and planning
• Support infrastructure project management

When to use me

• When working on building or infrastructure projects
• When understanding construction methodologies
• When navigating regulatory requirements
• When selecting construction materials
• When planning site development

Key Concepts

Construction Materials

Material	Properties	Common Uses
Concrete	High compressive strength, low tensile	Foundations, slabs, columns
Steel	High strength, ductile	Frames, reinforcement
Masonry	Compressive strength, fire resistant	Walls, foundations
Wood	Renewable, easy to work	Framing, formwork
Asphalt	Flexible, waterproof	Pavements, roofing

Project Phases

PROJECT_PHASES = {
    "pre_design": {
        "activities": ["Feasibility study", "Site selection", "Budget estimate"],
        "deliverable": "Project charter"
    },
    "design": {
        "activities": ["Schematic design", "Design development", "Construction documents"],
        "deliverable": "Drawings, specifications"
    },
    "procurement": {
        "activities": ["Bidding", "Contractor selection", "Material ordering"],
        "deliverable": "Contracts"
    },
    "construction": {
        "activities": ["Site preparation", "Foundation", "Structure", "MEP", "Finishes"],
        "deliverable": "Completed facility"
    },
    "closeout": {
        "activities": ["Testing", "Commissioning", "Training", "Documentation"],
        "deliverable": "Final project"
    }
}

Building Systems

• Structural: Load-bearing elements (foundation, frame, roof)
• Envelope: Walls, windows, doors, roofing
• MEP: Mechanical, Electrical, Plumbing
• Fire Protection: Detection, suppression, egress
• Communication: Data, security, AV systems

Infrastructure Types

• Transportation: Roads, bridges, railways, airports, ports
• Water Resources: Dams, levees, canals, water treatment
• Utilities: Power, gas, telecommunications, sanitation
• Public Buildings: Schools, hospitals, government facilities

Construction Contracts

Type	Payment	Risk
Lump Sum	Fixed price	Contractor
Cost Plus	Actual cost + fee	Owner
Time & Materials	Hourly rates	Shared
Unit Price	Per unit quantity	Shared
Design-Build	Single contract	Contractor
EPC	Turnkey	Contractor

Site Development

# Grading calculations
def cut_fill_volumes(grid, target_elevation):
    """Calculate cut and fill volumes from grid"""
    cut_volume = 0
    fill_volume = 0
    
    for cell in grid:
        elevation_diff = cell.elevation - target_elevation
        volume = elevation_diff * cell.area
        
        if elevation_diff > 0:
            cut_volume += volume
        else:
            fill_volume += abs(volume)
    
    return {"cut": cut_volume, "fill": fill_volume}

Regulatory Framework

• Zoning: Land use regulations
• Building Codes: Safety standards (IBC, IRC)
• Environmental: NEPA, EPA regulations
• Accessibility: ADA requirements
• Permits: Building, grading, utility connections