NBC 4

Slope of ramp of road-way to sidewalk

• 1/3 - 1/4

• 1/2 - 1/3

• 1/4 - 1/5

• 1/2 - 1/3

Slope of driveway to sidewalk where the height of curb is 200 mm and above

• 1:6

• 1:8

• 1:10

• 1:12

Minimum vertical clearance of primary lines from the crown of the pavement when crossing the highway

• 7 meters

• 8 meters

• 9 meters

• 10 meters

Minimum vertical clearance of primary lines from top of sidewalk when installed along the side of the highway

• 6.00 meters

• 6.50 meters

• 7.00 meters

• 7.50 meters

Vertical clearance of secondary lines from sidewalks along or crossing the street

• 6.00 meters

• 6.50 meters

• 7.00 meters

• 7.50 meters

Minimum clearance of conductors from the highest point of a roof

• 2.50 meters

• 1.20 meters

• 3.00 meters

• 5.50 meters

Maximum height of a dumbwaiter

• 2.50 meters

• 1.20 meters

• 3.00 meters

• 5.50 meters

Maximum area of a dumbwaiter

• 3,861 sqcms.

• 3,860 sqcms.

• 3,862 sqcms.

• 3,863 sqcms.

Minimum clearance of conductors from any platform or ground or projection from which they might be reached

• 2.50 meters

• 1.20 meters

• 3.00 meters

• 5.50 meters

Minimum vertical clearance of service drop of communication lines above ground at its point of attachment to than building or pedestal

• 2.50 meters

• 1.20 meters

• 3.00 meters

• 5.50 meters