To construct stairs for a 5-meter high building, first determine the number of risers by dividing the total height by the maximum allowable riser height (typically 17–18 cm per code). For a 5-meter (500 cm) height, this results in 28–29 risers, with corresponding treads. Use pressure-treated 2x12 or 2x10 wood stringers spaced 381 mm apart for treads. Install riser blocks between treads, ensuring consistent height. Add handrails at 90 cm height, supported by posts every 1 meter. Ensure non-slip surfaces and proper guardrails if the staircase is exposed.

Structural compliance is critical to prevent accidents and ensure longevity. The International Building Code (IBC) mandates riser heights between 17–18 cm (6.7–7.1 inches) and tread depths of 28 cm (11 inches) (IBC 2021, Section 1109.4). A 5-meter staircase with 17 cm risers requires 29 steps, meeting code standards. OSHA guidelines require handrails with a 1.2-meter radius for turns and guardrails above 1 meter if open-sided (OSHA 29 CFR 1910.305). A 2020 study by the National Safety Council found that 34% of staircase accidents involve improper riser height or missing handrails, emphasizing code adherence. Using treated wood or concrete steps enhances durability against moisture and load stress. Local building codes may impose additional requirements, such as landing spacing every 12 meters for runs exceeding 5.5 meters. Proper installation by licensed professionals ensures load distribution and safety, reducing the risk of collapse. Ultimately, adherence to structural standards minimizes hazards and ensures regulatory compliance.