OBC House Exam study plan

Map the scope and structure of the building code to the exam's domain 1 outline, noting the chapters that govern occupancy, construction type, and height/area limits

Define key code terms (occupancy classification, construction type, allowable area, fire separation distance) in your own words and verify each against the code text

Compute allowable building area for three hypothetical single-occupancy buildings using the tabular area and the frontage increase method

List the code sections most likely to be tested in domain 1 and flag any you cannot yet explain

Trace the code's requirements for fire-resistance-rated construction, including fire walls, fire barriers, and horizontal assemblies, and distinguish where each applies

Determine required fire separation distances and exterior wall fire-resistance ratings for at least four building scenarios

Correlate occupancy classification with means-of-egress requirements, including number of exits, travel distance, and common path limits

Solve ten mixed code-application questions under timed conditions and log the reasoning for each answer

Explain how loads flow from roof to foundation for a simple framed building, identifying gravity, lateral, and uplift paths

Differentiate shallow and deep foundation systems and select an appropriate system for three given soil and loading conditions

Describe the behavior of common structural framing systems (wood, steel, concrete, masonry) under gravity and lateral loads

Interpret a set of structural plans and identify the lateral-force-resisting system, diaphragms, and collectors

Identify the control layers of the building envelope (water, air, vapor, thermal) and explain how they are sequenced in wall and roof assemblies

Diagnose common envelope failure modes, including thermal bridging, vapor drive, and flashing defects, from written descriptions

Compare plumbing system types (supply, drainage, venting) and state the code principles that govern each

Outline the purpose and basic sizing logic of HVAC distribution, electrical service, and life-safety power systems

Apply the code's accessibility requirements to a set of building elements, including accessible routes, clear floor space, and turning space

Determine required occupant load and egress capacity for five mixed-use floor plans

Specify the fire-protection features required for a given occupancy and construction type, including sprinklers, standpipes, and detection

Evaluate accessibility compliance in three written scenarios and identify every deficiency

Explain the intent and structure of the energy code, including envelope, mechanical, lighting, and renewable requirements

Compute a simple envelope performance comparison using U-factors and explain the trade-offs between prescriptive and performance paths

Match common construction materials and methods to their appropriate applications, including concrete, masonry, steel, wood, and cladding

Identify quality-control and inspection points for each major material system

Sequence the inspection process from permit application through final inspection and list the documents a plan reviewer must check at each stage

Write a plan-review checklist for a small commercial project covering architectural, structural, and life-safety sheets

Describe the standard tests performed on structural systems and envelope assemblies and the acceptance criteria for each

Review a set of sample construction documents and produce a list of deficiencies a plan reviewer would cite

Synthesize the highest-weight domains into a single decision framework for code, fire, and accessibility questions

Complete two full-length timed practice exams and score each by domain

Analyze every missed question, classify the error (knowledge gap, misread, or calculation), and write a corrective note

Build a final one-page quick-reference sheet covering the most frequently tested code tables and thresholds