The Ontario Building Code | Concentrated Loads

4.1.5.9. Concentrated Loads

(1) The specified live load due to possible concentrations of load resulting from the use of an area of floor or roof shall not be less than that listed in Table 4.1.5.9. applied over the loaded area noted in Table 4.1.5.9. and located so as to cause maximum effects, except that for occupancies not listed in Table 4.1.5.9., the concentrations of load shall be determined in accordance with Article 4.1.5.2.

Table 4.1.5.9.
Specified Concentrated Live Loads on an Area of floor or Roof

Forming Part of Sentence 4.1.5.9.(1)

Item	Column 1 Area of floor or Roof	Column 2 Minimum Specified Concentrated Load, kN	Column 3 Loaded Area, mm x mm
1.	Roof surfaces	1.3	200 x 200
2.	floors of classrooms	4.5	750 x 750
3.	floors of offices, manufacturing buildings, hospital wards and stages	9.0	750 x 750
4.	floors and areas used by vehicles not exceeding 4000 kg gross weight	18	120 x 120
5.	floors and areas used by vehicles exceeding 4000 kg but not exceeding 9000	36	120 x 120
	kg gross weight
6.	floors and areas used by vehicles exceeding 9000 kg gross weight	54	250 x 600
7.	Driveways and sidewalks over areaways and basements	54	250 x 600