Test: Module 01 — Introduction to Construction in Brazil¶

Instructions: Answer all questions. Write your answers directly below each question. Bonus questions are optional and can raise your score above 100%.

Total Points: 37 pts (Easy: 5 + Medium: 10 + Hard: 12 + Expert: 10) Bonus Available: 5 pts

Section 1: Easy Questions (1 pt each)¶

Q1. What does "alvenaria convencional" mean in Brazilian construction, and which structural elements carry the loads in this system?

Q2. Name three items of PPE that are required when cutting ceramic tiles with an angle grinder, and state what hazard each item protects against.

Q3. What is the purpose of an ART (Anotação de Responsabilidade Técnica) in Brazilian construction, and which professional body issues them?

Q4. In a Brazilian floor plan (planta baixa), what does a quarter-circle arc drawn from a gap in a wall represent?

Q5. Brazil's Código de Obras is enforced by which level of government — federal, state, or municipal?

Section 2: Medium Questions (2 pts each)¶

Q6. Explain the key difference between alvenaria estrutural and alvenaria de vedação. If you want to remove an interior wall, why does this distinction matter, and what steps must you take before proceeding?

Q7. A homeowner discovers that a wall they want to remove contains pipes. Explain: (a) what risk this creates, (b) which ABNT norm is most relevant to the water supply pipes, and © what professional should be consulted.

Q8. You are calculating the amount of floor tile needed for a 4.20 m × 3.60 m room. Show your calculation for the quantity of tile to purchase, including a 10% waste factor. Tiles are sold in boxes covering 1.62 m² each. How many boxes do you need?

Q9. Explain why asbestos is a specific concern in Brazilian buildings built before approximately 2005, and describe the correct safety procedure before cutting through a fiber cement panel of unknown age.

Q10. Compare wood frame and alvenaria convencional construction in terms of: (a) structural principle, (b) typical wall thickness, and © renovation implications.

Section 3: Hard Questions (3 pts each)¶

Q11. A friend sends you photos of a room in a house they are considering buying. The walls are 14 cm thick, there are no visible concrete columns at the corners, and the room has a concrete slab ceiling. Describe the step-by-step process you would recommend for determining whether the interior walls are structural, including the visual clues to look for and when you would recommend calling a structural engineer.

Q12. Scenario — Renovation safety decision: You arrive on site to begin a bathroom demolition. You notice the existing wall tiles are covering what appears to be an older generation of tiles (you can see the edges where a small piece has chipped). The building was constructed in 1978. Your plan is to use an angle grinder to cut around the tiles for removal.

Identify all the safety issues in this scenario and describe what you should do before starting demolition. Be specific about: - What hazardous material concern exists and how to address it - What PPE is required and why - What professional involvement (if any) is needed

Q13. A room is 5.00 m × 4.00 m with a ceiling height of 2.80 m. It has 2 windows (each 1.10 m wide × 1.20 m tall) and 1 door (0.90 m wide × 2.10 m tall). You will apply PVA primer (1 coat, yield 9 m²/litre) and then PVA latex (2 coats, yield 11 m²/litre per coat) to all four walls and the ceiling.

Calculate the total litres of primer and paint needed. Show all working. Round up to the nearest practical purchase quantity (paint is sold in 0.9 L, 3.6 L, 5.4 L, 18 L containers).

Q14. Debugging: A renovator tells you: "I measured my kitchen and it's 3.80 m × 2.90 m. I bought 11 m² of 60×60 cm tiles and 7 bags of tile adhesive mortar (20 kg each, AC-II). I started tiling and ran out of both tiles and adhesive halfway through. What did I do wrong?"

Identify all calculation errors and show the correct quantities for tiles (with 10% waste factor) and adhesive mortar (AC-II at 6 kg/m²).

Section 4: Expert Questions (5 pts each)¶

Q15. Brazil has a significant housing deficit and millions of homes built through auto-construção — often without professional oversight, sometimes without permits. Drawing on what you have learned in this module, analyze the system-level tension between:

The legal and technical requirement for professional oversight (CREA/CAU, ART/RRT, Código de Obras)
The practical reality that most Brazilian residential construction and renovation happens outside this system
The genuine risks created by unguided construction (structural failures, electrical fires, water contamination)
The economic reality that most families cannot afford professional services for every renovation task

Propose a framework for when a homeowner should always hire a professional, when professional review is prudent but not strictly necessary, and when competent self-management is appropriate. Justify each category with specific technical reasoning.

Q16. You are consulted by a municipality's housing authority in the Northeast of Brazil about common failure modes in the existing housing stock, which consists largely of alvenaria estrutural homes built in the 1990s-2000s under federal housing programs. Many homes show signs of water infiltration, cracked walls, and deteriorating electrical installations.

Based on Module 01's coverage of construction systems, norms, and safety: (a) identify the three most likely causes of the observed failure modes, (b) explain why alvenaria estrutural presents specific challenges for renovation vs. alvenaria convencional, and © propose a prioritized inspection protocol that the municipality could use to triage which homes need urgent intervention vs. routine maintenance.

Bonus Questions (variable pts)¶

Bonus 1. Research and describe the historical reasons why Brazil standardized on the two-pole system (127V and 220V coexisting in the same building) rather than a single voltage standard, and explain how this affects renovation planning today. (+5 pts)