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step consists of treads and risers and determined the slope angle. There is a law, "Blondel Act, which establishes a relationship between the tracks and risers: 2CH + 1H = 64cm and being (alpha) angle of the slope: tan (alpha) = CH / H. The ideal relationship is CH = H = 18cm and 28cm.
Also, every 14-18 steps need to put a break whose length is three tracks. Calculations
for the design of a ladder.
eg If you want to place a ladder to rise three meters proceed as follows:
3m = 300cm (then) 300cm/18cm = 16.6 (always round up) (then)
number of risers be 17 (then) 300cm/17 = 17.65 cm is the size of the risers.
is known 2CH + 1H = 64cm (then) 64cm - 2. (17.65) = H = 28.7 cm
The riser can not be greater than 18cm or smaller footprint than 28cm.
width dimensions depend on the fate of the ladder and project needs. In public buildings the width should be between 1.50 to 2.30 meters, in office from 1.30 to 1.50 meters, in collective dwellings if a lift will have a minimum of 1m, and if no limit is 1.20 meters, and finally the case of individual housing width of 0.8 m is correct.
Among the demands are the type of pavement should be resistant to wear, slip and submit security elements (handrails, for example).
ramps in turn, allow access to people with disabilities and require minimal effort. Its slope can not exceed 15 ° so it takes very long.
step consists of treads and risers and determined the slope angle. There is a law, "Blondel Act, which establishes a relationship between the tracks and risers: 2CH + 1H = 64cm and being (alpha) angle of the slope: tan (alpha) = CH / H. The ideal relationship is CH = H = 18cm and 28cm. Also, every 14-18 steps need to put a break whose length is three tracks. Calculations
for the design of a ladder.
eg If you want to place a ladder to rise three meters proceed as follows:
3m = 300cm (then) 300cm/18cm = 16.6 (always round up) (then)
number of risers be 17 (then) 300cm/17 = 17.65 cm is the size of the risers. is known 2CH + 1H = 64cm (then) 64cm - 2. (17.65) = H = 28.7 cm
The riser can not be greater than 18cm or smaller footprint than 28cm.
width dimensions depend on the fate of the ladder and project needs. In public buildings the width should be between 1.50 to 2.30 meters, in office from 1.30 to 1.50 meters, in collective dwellings if a lift will have a minimum of 1m, and if no limit is 1.20 meters, and finally the case of individual housing width of 0.8 m is correct.
Among the demands are the type of pavement should be resistant to wear, slip and submit security elements (handrails, for example).
ramps in turn, allow access to people with disabilities and require minimal effort. Its slope can not exceed 15 ° so it takes very long.
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