STRAIGHT FLIGHT STAIRCASESAngle of inclination / rise 74Custom design 74Staircases with one flight /with several flights 75Stringers / dimensioning 76 - 77Treads / landings 78 - 79Footbridges 80Railings 80 - 81Fixing elements / surface treatment 82Cat ladders / folding gangway steps 83Special staircases / helical staircases 83How to order 85

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Weland standard straight flight staircases are manufac-tured of steel and are mainly used in industrial buildingsand as escape staircases in different types of buildings.The staircases consist of stringers, treads and landingsof grating as well as balustrades. The steel componentsare, as a rule, hot dip galvanized and supplied inseparate parts for assembly on site.

Our manufacture also comprises straight flight stair-cases for other applications such as installations inoffice buildings, flats, entrances, public rooms, schoolsetc. In these cases the treads normally consist of othermaterial than grating. Also the design of the balustradeand the surface treatment can differ.

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CUSTOM DESIGNThe simplest method for design is to leave the planningto us. Our technical department can look back at manyyears of experience with the planning and dimensioningof straight flight staircases. Just send us your drawing,we do the rest.We dimension and draw the staircase, and all you needto do is check the measurements and approve thedrawing before manufacture starts.

ANGLE OFINCLINATION / RISEFor comfortable passage of staircases there should be acertain ratio between the angle of inclination, the rise andthe going. The suitable angle of inclination lies between30° and 45°, in practice, however, it is often necessaryto compromise due to the limited space for the base line.The table below shows the suitable rise and going whenthe angle of inclination is known.

Angle of Suitable Suitable Ratio* Base line/ inclination rise going height of stair

60° 240 160 0,5857° 230-240 160 0,6555° 230 200 0,7052° 220-230 200 0,7850° 220 200 0,8447° 210-220 230 0,9345° 210 230 1,0042° 200-210 260 1,1140° 200 260 1,1937° 190 260 1,3335° 180-190 300 1,4332° 175 300 1,6030° 170 300 1,73

* If the angle is not known, but the base line is given,divide the base line figure L by the figure for the heightof the stair H, then look up the closest figure in thecolumn to the right

Example:Base line (L) = 3,5 mHeight of stair (H) = 2,5 m

L = 3,5 = 1,4 the angle of inclination is 35°H 2,5

L

H

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EXAMPLES OF STAIRCASES WITH ONE FLIGHT

EXAMPLES OF STAIRCASES WITH SEVERAL FLIGHTS

Top tread onestep heightbelow existinglanding.

Top tread onlevel with ex-isting landing.

Staircase includinglanding.

1. 2. 3.

Staircase incl. lan-

ding below, existing lan-

ding on top.

Staircase incl. lan-

ding below, top tread on

level with ex-isting landing.

Staircase including

landings.

Top tread one step height below existing landing.

Top tread on level with existing landing.

Staircase including landing.

Staircase incl. landing

below, exist-ing landing

on top.

Staircase incl. lan-

ding below, top tread on

level with ex- isting landing.

Staircase including

landings.

4. 5. 6.

7. 8.

10. 11. 12.

9.

DIMENSIONINGFor the dimensioning of stringers for a straight flight stair-case Building Standards BBR94 and BKR94 apply. Baseline, width, load etc. have to be considered. In order tofacilitate the dimensioning we have worked out a diagramshowing a graph intended to give a lead for choosingthe suitable type of stringer. The graph is calculated fora staircase with an effective inclination of 35 degrees.

Table: Load Graph

Values for WUC profile

In case of other load values please contact Weland.

UPE220

UPE200

UPE180

UPE160

WUC170/5

WUC170/4

WUC170/3

WUC120/3

12,0

11,0

10,0

9,0

8,0

7,0

6,0

5,0

4,0

3,0

2,0

1,0

0,0

0,6 0,7 0,8 0,9 1 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2

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FLAT BAR / U PROFILEIf for any reason the WUC profile can-not be used, we manufacture stringers also from flat bars or U-shaped profile.

STRINGERS

COMPUTERCONTROLLEDMANUFACTUREWeland straight flight staircases with WUC profiles aremanufactured in a computer controlled production line- „from coil to finished stringer“ - fully automatically. Thismethod gives the following advantages:• Low weight and esthetic design• Close tolerances• Large delivery capacity• Short deliveries

WUC PROFILESWeland standard straight flight staircases are manufac-tured with stringers of WUC profile. This profile has beendeveloped with the objective of achieving high stabilitycombined with low weight. WUC profiles are manufactured from 3, 4 or 5 mm steelsheet with height (A) 120 and 170 mm respectively.

t

A

CB

Type of A B C t Bending resis- Weightstringer mm mm mm mm tance W in cm3 kg/m

WUC 120/3 120 45 22 3 25,0 5,6WUC 170/3 170 55 25 3 46,1 7,3WUC 170/4 170 55 25 4 59,6 9,6WUC 170/5 170 55 25 5 72,7 12,0

Calculation of Stringer

Tread Width (m)

Bas

e Li

ne (

m)

77

WUC-profile

Flat bar

U-profile

78

STANDARD STAIRTREADSType TH6 is manufactured from press-welded grating with mesh size30 x 67 mm. Type TH6-S is manufactured from the samegrating, but is provided with a safety front edge marking thefront of the tread and giving increased non-slip properties.Standard stairtreads are hot dip galvanized and kept instock. Stairtreads up to 900 mm length have end plates 60mm high, from length 1000 mm end plates 70 mm high.Thisapplies to all types of tread.Special type treads can bemanufactured from grating chosen from Weland gratingprogramme (see separate brochure).

STANDARD LANDINGSWeland Standard landings are designed in the sameway as the treads. Standard depth is 500, 700 and 1000mm respectively. Landings other than standard design onrequirement.

TH6

TH6-S

Tread length (L)Compare stair widthordering examplespage 85

Treadwidth(B)

B= 130 40 15 25 50

B= 160 36 39 35 50

B= 200 50 35 65 50

B= 230 60 50 70 50

B= 260 80 58 72 50

B= 300 100 35 115 50

B= 500 100 35 315 50

B= 700 100 35 515 50

front edge

45 mm up to L = 900 mm55 mm from L = 1000 mm

15 mm

Hole-Ø 14 mmfor M12screw

= stock dimensions

The figures in the table indicatedthe approximateweight in kg.

MEASUREMENTSOF TREADS ANDLANDINGS

End plate tread

Length Stairtreads Landings

Type Width, mmmm 130 160 200 230 260 300 500 700 1000

400 TH6 1,9 2,2

400 TH6-S 1,9 2,2

500 TH6 2,2 2,6 3,1 5,9 8,0 11,2

500 TH6-S 2,2 2,6 3,1 5,9 8,0 11,2

600 TH6 2,6 3,1 3,6 4,1 4,6 6,9 9,4 13,1

600 TH6-S 2,6 3,1 3,6 4,1 4,6 6,9 9,4 13,1

700 TH6 3,4 4,0 4,7 5,3 5,9 9,2 12,4 17,7

700 TH6-S 3,4 4,0 4,7 5,3 5,9 9,2 12,4 17,7

800 TH6 3,8 4,5 5,2 5,9 6,6 7,3 10,4 14,3 20,0

800 TH6-S 3,8 4,5 5,2 5,9 6,6 10,4 14,3 20,0

900 TH6 4,2 5,0 5,8 6,6 7,3 8,0 11,7 15,9 22,3

900 TH6-S 4,2 5,0 5,8 6,6 7,3 11,7 15,9 22,3

1000 TH6 5,5 6,5 7,6 8,5 9,5 10,6 15,0 20,5 28,7

1000 TH6-S 5,5 6,5 7,6 8,5 9,5 10,6 15,0 20,5 28,7

1100 TH6 8,2 9,3 10,4 11,5 16,5 22,5 31,4

1100 TH6-S 8,2 9,3 10,4 11,5 16,5 22,5 31,4

1200 TH6 8,9 10,0 11,2 12,4 17,9 24,4 34,1

1200 TH6-S 8,9 10,0 11,2 12,4 17,9 24,4 34,1

1300 TH6 12,0 13,4 14,9 21,7 29,6 41,5

1300 TH6-S 12,0 13,4 14,9 21,7 29,6 41,5

1400 TH6 12,9 14,3 16,0 23,3 31,8 44,6

1400 TH6-S 12,9 14,3 16,0 23,3 31,8 44,6

1500 TH6 15,0 16,9 18,8 27,7 37,9 53,2

1500 TH6-S 15,0 16,9 18,8 27,7 37,9 53,2

1600 TH6 18,0 20,0 29,7 40,7 57,2

1600 TH6-S 18,0 20,0 29,7 40,7 57,2

1800 TH6 22,3 61,0

1800 TH6-S 22,3 61,0

B= 1000 100 35 390 35 390 50

front edge

measurement asend plate tread

End plate landing

SPECIAL DESIGNTREADSApart from treads produced from grating we can alsomanufacture treads made of slit grating, checker plate,plate with carpet, wood of different types, marble, con-crete, terrazzo etc. Get in touch with us already in theplanning stage, we assist you with the solution. Treadscan also be designed as riser treads for reducing thedistance between the steps. Building Standards BBR99 chapter 8:232.

Slit grating

Staircase with treads of concrete covered with ceramic tiles

Staircase in public baths. Treads of plate with non-slip carpet

Staircase in residential house. Treads of concrete with top faceof terrazzo

Checker plate

Wood

Riser tread

Concrete with topface of terrazzo

Plate with carpet

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Typ 6: Handrail and balu-sters from tube Ø 42,4 mm,intermediate balusters fromtube Ø 16 mm, daylightbetween balusters maxi-mum 100 mm.

STANDARD BALUSTRADEStraight flight staircases can be provided with balu-strades on one side, on both sides or balustrade onone side and hand-rail fixed to the wall on the other.The height of balustrade is as standard 900 mm inthe stair flights and 1100 mm on the landings. In case of danger of fal-ling the height of balustrade in the flights can also be 1100 mm.Se BBR99 chapter 8:232.

PLATFORM BALUSTRADEPlatform balustrades are manufactured on customer re-quirement and always with height 1100 mm. The fixingis done following alternatives A or B. If people are likelyto be expected underneath the platform or its edge, thebalustrade has to be provided with a kick strip to preventobjects from unintentionally getting kicked down. Welandalso stocks standard railings manufactured in modules.These modules can be combined to the required length,see brochure Weland Universal Railings.

FOOTBRIDGESFootbridges manufactured from grating with completerailings, module build-up for easy and quick erection. Thefootbridge consists of grating and stringers welded tothe gangway. The stringers also serve as kick strip. Themodules are connected by bolts. The railing is suppliedin loose parts for bolting together on site.

Typ 4: Handrail andbalusters from tube Ø 42 mm.

Typ 2: Handrail and balu-sters from tube Ø 42 mm,intermediate rails from tubeØ 27 mm.

A B

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Balustrade

Joint

81Protective cage preventing trespassing.

Staircase with balustrade type 6.

Special design balustrade with fill-ins of grating.

Balustrade with handrail of wood, square profile postsand board cladding.

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SURFACE TREATMENTIndustrial staircases and staircases for outdoor use are as standard hot dip galvanized in accordance with EN 1461. Staircases for internal use, other than industrial, can be supplied primer painted, varnished or treatedto customer requirement.

FIXING DEVICES

1-flight stair, fixing angles

With landing, supporting leg

With landing, fixing angles

Multi-flight stair with supporting legs

With landing, bracket

Separate platform

20

10

20

30

40

50

0 40 60 80 100 120 140 160 180 200

Life spanin years Country

EN 1461Smaller townsCoastalareas Hard river water

Inner city centres

Industries

RainwaterPh4

Sea waterSoft riverwater

Zinc penetration in µm

83

LADDERSWeland stocks a standard ladder with measurements as shown in the figure. The ladder is manu-factured without railing and hot dip galvanized. Ladders with other measurements and different design on requi-rement, see ordering straight flight staircase.

FOLDING GANGWAY STEPSA somewhat odd product, the Weland balance bridge,is used mainly within the petrol and chemical industries. It is easily moun-ted and easy to handle. It is stoc-ked in different sizes, always hot dip galvanized.

HELICAL STAIRCASESWeland helical staircases are manufactured with stringers in the same way as straight flight staircases. Thestaircases can be freestanding or follow the inside or outside of a silo.

SPECIAL DESIGN STAIRCASESWe also manufacture staircases differing from our standard design. This applies for instance to the stringers, materialused in treads, railing and special surface treatment. Treads of concrete, marble and other stone material accordingto standard of our subcontractors.

500

225 56°

978

1575

900

70°

30°R

R=720-1440 mm

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Trappor

Trappor, ramper, balkonger o.d. i utrymmen där barn kanvistas, skall utformas så att risken för barnolycksfall begränsas.

Öppningar mellan plansteg i trappor bör vara högst100 mm. Inom bostäder bör trappor vara utformade så attgrindar kan monteras i trappans övre och nedre del.

Räcken på balkonger, trapplan och trapplopp bör, upp tillen höjd av 0,8 meter, utformas så att de inte medgerklättring. Vertikala öppningar bör vara högst 100 mmbreda.

Fritt mått i höjdled mellan ett balkongräckes underkantoch balkonggolvet eller mellan ett trappräckes underkantoch trappstegens stegnos bör vara högst 50 mm. Frittmått i höjdled mellan ett trappräckes underkant och etttrapplan eller golv bör vara högst 100 mm.

För att barn inte skall kunna fastna med huvudet bördet ovanför en balkongfront inte finnas horisontellaöppningar i intervallet mellan 110 och 230 mm.

Räcken och ledstänger (8:2321)

Fri höjd (8:312)

Trappor och balkonger (8:232, 2321)

Trappschakt för trappor som utgör huvudkommunikationerbör utföras med en minsta bredd enligt följande tabell.

Trappor i olika byggnader Trappschaktetsoch lokaler minsta bredd i m

Trappor i bostadshus

Inom och till en bostad 0,90Till flera bostäder i en byggnad som inte har hissar för bårtransporter 1,20Till flera bostäder i en byggnad som har hissar för bårtransporter 0,90Till källare och vindar i flerbostadshus 0,90Till källare och inredda vindar i småhus 0,80

Passagemått i utrymningsvägUtrymningsvägar skall utformas med sådan rymlighet ochframkomlighet att de kan betjäna det antal personer de äravsedda för.Bredden i utrymningsvägar bör inte understiga0,9 m. I utrymningsvägar från brandceller som är avsedda för fler än 150 personer bör breddeninte understiga 1,20

Trapplopp, trapplan, ramper och balkonger som inte av-gränsas av väggar, skall ha räcken som begränsar riskenför personskador. Trappor och ramper som är högre än0,50 meter skall ha ledstänger eller motsvarande på bådasidor.

Ledstänger eller motsvarande skall vara lätta att gripa om.

Trappor som är bredare än 2,5 meter bör delas medräcken eller ledstänger i två eller flera lopp.

Räcken i trapplopp bör vara minst 0,9 meter höga. Omen öppning vid sidan av ett trapplopp är så stor attstörtningsrisk föreligger och fallhöjden är mer än ettnormalt våningsplan, bör räcket vara minst 1,1 meter högt.

Räcken på trapplan inom en bostad bör vara minst 0,9meter höga. Räcken på andra trapplan, balkonger ochloftgångar bör vara minst 1,1 meter höga.

Den fria höjden i en trappa skall vara minst 2,0 m.Med fri höjd avses det vertikala måttet mellan två

tänkta parallella linjer, varav den ena tangerar stegnosarnaoch den andra underkanterna av ovanförliggande bygg-nadsdelar eller inredningsdetaljer.

Barnsäkerhet

FÖRESKRIFTER OCH ALLMÄNNA RÅDENLIGT BBR99

Brandklassning enl. R30Weland raka trappor med standardkomponenter somWUC-vangprofiler, kan dimensioneras enligt brandklassR30, utan brandskyddsmålning ellerbrandisolering.Testat och godkänt enligt ISO 834 och NT FIRE 005.

Trappschaktets bredd

Trappschakt

Handledare

Steglängd

max 100 max 100

max 50 max 50

Trapplanet skall ha minst samma bredd som trappan.Dörrar på trapplan skall placeras så att passage inte

försvåras. I flerbostadshus skall trapplan med dörrar varaminst 1,30 m breda.

Stegdjup i en rak trappa skall vara minst 0,25 m, mätt igånglinjen.

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3. Treads and landings

❑ TH6

❑ TH6-S

❑

ORDER SPECIFICATIONS

2. Type of stringer

❑ WUC

❑ U-profile

❑ flat bar

4. Stair widthOn each side of the staircasestringers, bases, balustrades,handrails etc. must not encroachmore than 100 mm on the stairshaft. The distance between anadjacent wall and the flight to bemaximum 50 mm.

6. Railing on landing ❑ as per separate sketch

7. Surface treatment treads ❑ hot dip galvanized Surface treatment other ❑ hot dip galvanized

❑ steel components ❑

Fill in the form below or send dimensioned sketch or building drawing. We design the staircase for you.

1. Type of stair, height and base line

5. Railing

Right side (right side when climbing)

❑ Railing type ❑ No railing ❑ HandrailLeft side (left side when climbing)

❑ Raling type ❑ No railing ❑ Handrail

Stair shaft

tread widthstair width 50

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

H

L

L

1. 2. 3.

4. 5. 6.

7. 8. 9.

10. 11. 12.

H H

L

l

l

l

l

l

l

l1

l1

l2

l2

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