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Study Program Year : 2007 : S 0673 / Building Construction II Stairs Meeting Study Program Year : 2007 : S 0673 / Building Construction II Stairs Meeting 4

Learning Outcomes By the end of this meeting, expected student will be able to Learning Outcomes By the end of this meeting, expected student will be able to : • Student can explain stairs construction conditions as building connection. 3 Bina Nusantara

Outline Items • Items Stairs house and 1 condition : forremain public building. • Outline Items • Items Stairs house and 1 condition : forremain public building. • Items 2 Size : measure formula counting and of stairs. • Items 3 : Kinds of stair. 4 Bina Nusantara

Condition of Stair 1. Stairs have to be functional. Its meaning of form goodness, Condition of Stair 1. Stairs have to be functional. Its meaning of form goodness, size measure and also materials of stair have to be adapted for existing building as well as have to be accommodated also with building function. 2. Stair have to easy to seen and reached. Its meaning stair location really earn easily reached by its user and not blocked and also enough light. 5 Bina Nusantara

3. Inclination of stair bevel angle may not too sloping because can be boring 3. Inclination of stair bevel angle may not too sloping because can be boring one who go up as well as needing many place. That way also stair bevel angle may not too steep so that endanger at the time of people go down. • Inclination of stair / minimum stair angle 25 o and maximum 42 o • Good Bevel stair angle between 36 o – 40 o • Stair for house remain at the most 42 o • Stair for public building at the most 38 o. 6 Bina Nusantara

Inclination an stair earn also determined with formula : a + 2 O = Inclination an stair earn also determined with formula : a + 2 O = 60 – 62 cm Which : a = wide of stair step = Aantrede O = High of stair step = Optrede 7 Bina Nusantara

4. Size measure / to the number of stair Stair step size measure very 4. Size measure / to the number of stair Stair step size measure very is influencing its user freshment. For House : a. Wide of stair step 22 – 30 cm. Good is 30 cm. b. High of stair step maximum 20 cm. Good is 16 – 17, 5 cm. For public building : a. Wide of stair step 30 cm, and may not less than 22, 5 cm. b. High of stair step maximum 19 cm and good is 14 – 15 cm. 8 Bina Nusantara

Stair step size measure have to uniform. Many foot step on stair in an Stair step size measure have to uniform. Many foot step on stair in an zoom, may not more than 12 foot step. If high in the reality floor make the amount of foot step more than 12, hence can be made by arrange in steps with “ BORDES”. 9 Bina Nusantara

5. Wide Stair Wide an stair depended from the stair function as well as 5. Wide Stair Wide an stair depended from the stair function as well as depended from building function. More and more one who often use the stair, wide it is of course stair will be more big compared to with stair which a little its user. Wide of stair in general: * House : 80 – 100 cm * Public building : 120 – 200 cm Wide of stair is also reckoned when needed to street conveyor of goods. 10 Bina Nusantara

6. Free High Such is vertical free path is people moment stand up in 6. Free High Such is vertical free path is people moment stand up in stair, good start first foot step of stair, bordes and also until last foot step, people as well as transported to goods earn free walk without there is barrier above him. Free high minimum 2, 00 M 11 Bina Nusantara

Stairs Construction • Stair have to be strong and sturdy. • Cannot make a Stairs Construction • Stair have to be strong and sturdy. • Cannot make a move or joggle. • Comfortable and Simple form got through; except planned certain to the beauty of an interior from an room. 12 Bina Nusantara

Plan of Stairs Making of stair is also influenced by roominess, wide and long Plan of Stairs Making of stair is also influenced by roominess, wide and long of room and also high difference of existing floor. From this data can be counted foot step of stair then determined by wanted arrange in steps. Example : 1. If wide of room, long of room do not limit, but which is determined : - High difference of floor. ( H ) = 3, 20 m - High size measure of Optrede ( O ) = 18 cm 13 Bina Nusantara

Many foot step of stair and is wide of foot step can be determined Many foot step of stair and is wide of foot step can be determined as follows : Many foot step : H/O = 320 / 18 = 17, 778 ~ 18 foot step Wide of foot step ( a ) : a + 2 O = 62 a + ( 2 x 18 ) = 62 a = 26 cm 14 Bina Nusantara

2. If wide limited room length so that foot step can only be made 2. If wide limited room length so that foot step can only be made 25 cm. With formula : a + 2 O = 62 25 + 2 O = 62 O = 18, 5 cm Many foot step : H / O = 320 / 18, 5 = 17, 29 If taken 17, high of foot step of stair = 320/17 = 18, 82 cm If taken 18, high of foot step = 320 / 18 = 17, 78 cm So if taken 17 or 18, high foot step of stair still up to standard. 15 Bina Nusantara

Stairs Form 1. 2. 3. 4. 5. 6. 7. 8. 9. Diametrical Stair. Ordinary Stairs Form 1. 2. 3. 4. 5. 6. 7. 8. 9. Diametrical Stair. Ordinary stair heel. Bordes Stair 90 o Bordes stair with 2 bordes among 180 o Bordes Stair 180 o Stair used to a quarter turn downwards. Stair used to a quarter turn to the top. Stair used to a quarter turn among. etc 16 Bina Nusantara

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Diametrical stair With Bordes H = Floor High = 2. 80 m H 1 Diametrical stair With Bordes H = Floor High = 2. 80 m H 1 = Bordes high = 1. 40 m L = Stair length B = Wide length Wide Bordes = 1. 00 m a = aantrede = 25 cm O = optrede = 17, 5 cm h = High of arm rest = 80 cm 18 Bina Nusantara

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a = aantrede = Stair angle b = Wide stair o = optrede B a = aantrede = Stair angle b = Wide stair o = optrede B = Wide of bordes H = High of bordes s = arm rest L. D = Ground floor ( 0. 00) L. T = High level floor 20 Bina Nusantara

Fuik Method 1. Determining journey line with have directive 1/3 b from outside. 2. Fuik Method 1. Determining journey line with have directive 1/3 b from outside. 2. Dismember journey line each of = a 3. Gives a number 1, 2, 3, ……. 12 21 Bina Nusantara

4. Area 1 – 2, 2 – 3 and others until 11 – 12 4. Area 1 – 2, 2 – 3 and others until 11 – 12 is not the same area. 5. Aantrede after no. 12 is Normal Aantrede. 6. Measure AB from tip of baluster until dot projection 12. 7. Cut AB line = e, slice 11 same part, and gives a number 1 until 12. 8. Draw vertical line of dot 1 until 12 is mentioned. 9. At vertical line of dot 12 measure a = Aantrede is got dot 12’. 10. At vertical line of dot 6 measure mark with lines with length = 1/11 AB is got dot 6’. 11. Draw line 12’ – 6’ and lengthened to cut vertical line there are dot 1’, 2’, 3’ and so on. 22 Bina Nusantara

12. Vertical line 1 – 1’ = y 1 2 – 2’ = y 12. Vertical line 1 – 1’ = y 1 2 – 2’ = y 2 and so on 13. Cut line y 1, y 2, y 3 and so on, this applied at line of AB mentioned gives a number 1”, 2”, 3” and so on. 14. Finally contact dot between: With 1” – With 2” 23 Bina Nusantara