Timber Construction Using Baubuche

TIMBER CONSTRUCTION USING BAUBUCHE The world's largest roof truss made of BauBuche: design and assembly of SWG’s new production hall A NEW DIMENSION OF TIMBER CONSTRUCTION A BauBuche structure spanning up to 82 me- screw manufacturer belonging to the Würth Group. In ters is a world record! Timber has long been used spring 2019, the company broke ground for the largest as a building material in residential and public build- production hall made of wood worldwide. This brochure ings. What's new about this project: designing, calculat- provides an insight into the construction and assembly ing and finally building a production hall covering more techniques used. The key aspect in this construction pro- than 10,000 m2 of floor space that is entirely made of ject: the innovative building material BauBuche, a laminat- BauBuche. That very endeavor was undertaken on the ed veneer lumber made from European-sourced beech, premises of SWG Schraubenwerk Gaisbach GmbH, a which is gaining in importance in times of climate change.

2 TIMBER CONSTRUCTION USING BAUBUCHE Overall area: 12,800 m2 Dimensions: 96.50 m x 113.30 m x 12.00 m Materials: 420 m3 of BauBuche, 900 m3 of cross-laminated timber, 330 m3 of glued laminated timber Truss made entirely of BauBuche Maximum span: 82 m resting on just one column Screws: 250,000 ASSY® screws Utilization: approx. 20 % storage space, 70 % production and logistics space, approx. 10 % exhibition area and sanitary facilities Architects: Hermann Kaufmann + Partner ZT GmbH, Schwarzach (Austria) Structural design: SWG Engeneering, Rülzheim Building owner: SWG Schraubenwerk Gaisbach GmbH, Production Unit, Waldenburg Execution: Schlosser Holzbau, Jagstzell

BauBuche truss nodes

TIMBER CONSTRUCTION USING BAUBUCHE 3 “WE VENTURED PAST THE LIMITS OF WHAT IS POSSIBLE.”

Henning Ernst from SWG Engineering is the mind behind the design and construction of SWG’s new production hall. The below interview outlines his reasons for choosing BauBuche as beam material and sheds light on the constructional and technical challenges that had to be overcome.

4 TIMBER CONSTRUCTION USING BAUBUCHE Interview with Henning Ernst

How did you come up with the idea of using BauBuche for the entire truss of the new production hall? Our aim was to point the way for timber construction and showcase the opportunities it offers. Combining two high-performance products, BauBuche and ASSY®plus FT full-thread screws by Würth, helped us achieve this goal. BauBuche excels by its comparatively high strength. In combination with ASSY® timber screws, it is possible to optimize the size and cross-section of the building components.

What motivated you to use BauBuche in your design? The material’s high strength and consequently the possibility to build strong, yet very slender structures. At present, the market does not offer any other standardized material that even begins to compare to the properties of BauBuche. So having set ourselves the goal of creating a roof structure that was as resource-efficient as possible, there was no way around BauBuche.

Did the implementation go according to plan? There were a few unexpected incidents we had to cope with when producing and assembling the truss. Yet we found suitable solutions that pleased everyone thanks to a close and very trusting collaboration between the architects, truss designers, and the executing contractors. My colleagues and I were in close contact with our building contractor Schlosser Holzbau when planning the truss design/the timber structure to make sure the ideas we came up with would be feasible to implement. Schlosser Holzbau tested the feasibility of ideas and joining of truss members early on in internal tests and trial runs. This way, we managed to eliminate any unpleasant surprises at an early stage. The result of our collaboration speaks for itself: Feel free to visit the hall in Waldenburg.

So what exactly is new about the roof structure of SWG’s hall? Which constructional details make it different from and

TIMBER CONSTRUCTION USING BAUBUCHE 5 better than what has been known so far? Above all, it is the combination of different dimensions: creating a large span while using very slender beams. We also invested a lot of time in developing our joints. The new thing is that we can use almost 100 % of a beam’s cross-section without the joints determining the cross-section of the beams. By redistributing loads, we managed to enlarge the contact areas, thus completely eliminating the necessity to use fasteners for the application of compressive forces. Tensile forces, on the other hand, are

require the use of high-strength screws and steels. By combining BauBuche and ASSY® plus FT full-thread screws, we open up new fields of application, which we have already tested in other projects. These projects include joints and other points designed to transfer high loads, which could be solved easily by using these products, thus replacing elaborate, welded steel parts.

Please describe the role played by fasteners in such a project. Which fasteners would you recommend? The fasteners used and the resulting joints play a vital role. Without proper joints, forces cannot be transferred from one component to the other. It is crucial that fasteners are tested and approved for use in BauBuche. The correct installation of these fasteners must also be ensured. taken up by the ASSY® timber screws and transmitted to the connected When joining roof truss members in industrial settings, it does not building components. matter whether the holes for screws used in BauBuche must be pre- drilled or not. In theory, fastening wood screws without pre-drilling What did you learn from this project? What are your tips for a hole may be possible. However, the joints in our project require BauBuche structures that you would like to share with other dozens or even hundreds of short and long screws to be driven planners? into the wood. We ventured past the limits of what is possible. BauBuche allows us to design high-performance structures that are very slender and look really Due to the large number of screws to be used, the required nice and elegant. Using ASSY®plus FT full-thread screws allows us to precision, screw lengths, and the limited space available for joints join components almost irrespective of their internal forces. Furthermore, of this kind, pre-drilling is essential. When using BauBuche in other the handling of forces acting on the steel parts connecting the building projects, I recommend choosing the right fasteners based on their components must not be underestimated. The forces acting on these parts maximum load-bearing capacity, pull-out strength, screw spacing,

6 TIMBER CONSTRUCTION USING BAUBUCHE - SWG Engineering

Engineering support provided by experts from SWG Engineering (Würth Group) The use of self-tapping timber screws in structural timber constructions requires a sound knowledge of the required approvals and standards. In an engineer’s day-to-day work, it is nearly impossible to keep track of all the normative and product-specific regulations.

The SWG Engineering team supports engineers in all screw connection matters, helping with the design of joints, the calculation of screw connections or pointing application instructions and other requirements, which are included outalternatives.Furthermore, the services in each fastener's European Technical Approval (ETA), in this case provided by the engineers at SWG ETA-11/0190. These factors are decisive for planning, designing and Engineering include the structural design, building such construction projects. execution planning and construction of timber engineering projects, the development To which customers do you offer your planning services? of timber-construction-specific calculation We would be happy to share the experience we gathered and our software, participation in associations and findings with any planner or building owner interested, helping them contributions to standardization efforts as develop their projects—be they with BauBuche or other materials. well as the development of suitable fasteners and fastening systems, both improving tried and tested methods and designing new connections. Contact us!

TIMBER CONSTRUCTION USING BAUBUCHE 7 BAUBUCHEClimate change and bark beetles are giving coniferous forestsBEAMS a hard SWG’s production hall is around 114 m long and 96.5 m wide. time, which is why future cultured forests will certainly have to evolve into Along its entire length, the production hall has been divided mixed forests with a higher share of hardwood trees. Beech wood is an into five bays each measuring 18.7 m in length. Between the interesting material for timber structures. Creating a truss of BauBuche, a bays, the rooftop drops by about 5 m before rising again to building material made from laminated beech veneer, facilitates building normal height over the next bay. A 9 m annex on the eastern more slender structures than would be possible with steel, concrete, or glued side of the production hall (which is the front part in the laminated timber made from spruce. As a result, less load is applied to the isometric projection) will house common areas, seminar and ground, which greatly reduces the effort required to prepare the building training facilities. The western part of the hall accommodates ground. Smaller foundations may be needed, which is a prerequisite for a mechanical room of approx. 5 m. unique architectural structures.

BauBuche truss of SWG’s production hall.

2 © SWG Schraubenwerk Gaisbach GmbH, Waldenburg 28.11.19 2 © SWG Schraubenwerk Gaisbach GmbH, Waldenburg 28.11.19

Layout of main and secondary BauBuche truss. The primary truss spanning 82 m rests on just one central support, which is also made of BauBuche.

8 TIMBER CONSTRUCTION USING BAUBUCHE Detailed planning is the prerequisite for efficient timber construction.

SLENDER, LIGHT-WEIGHT, SEXY! Compared to spruce, steel, and concrete, BauBuche excels as a building material for supports thanks to its properties. Calculated internal forces: N ≤ 2806 kN, M ≤ 33.24 kNm Bauen mit BauBU – Die neue Produktionshalle dert,Ed SWG y,Ed Tragwerksplanung  Materialwahl

• Materialeigenschaften  27,7 m³  64,8 m³  79,2 m³ • Bemessungsschnittkräfte:  20,3 t  32,4 t  29,7 t  198 t Nt,Ed ≤ 2806 kN My,Ed ≤ 33,24 kNm 80x200 32/28 BauBU 32/28 GL28h 24/56 x 2 340 HEB 320x16 QR 406,4x17,5 RR

Comparison of various materials/cross sections, their dimensions and weight

14 © SWG Schraubenwerk Gaisbach GmbH, Waldenburg 27.03.2020 © SWG Engineering

TIMBER CONSTRUCTION USING BAUBUCHE 9 INNOVATIVE JOINTS The most interesting aspect for planners: • Load component 2 acts perpendicular to the joints designed for the SWG project the angle bisector between the diagonal using BauBuche and steel components. member and the bottom chord/shear cleat (see bottom ill.) Joint detail: main truss, node at center post beam To achieve this distribution of forces, the Five truss members meet at the center post beam inner parts of the diagonal members were Example of an extended multiple step joint supporting the main truss' bottom chord. Every removed and the bottom chords reduced on member is subjected to compressive forces. the outside to create a tongue and fork joint against a shear cleat, which, among other things, As the bottom chord has been designed as a with the diagonal members. The diagonal connects both diagonal members horizontally. continuous member, the transfer of loads in members' open mortises thus fit around the This shear cleat and the inner part of the open the bottom chords must be guaranteed. The bottom chord, while the reduced ends of the mortises have been cut along their angle bisector compressive force from the diagonal members is bottom chords form a butt joint in the center. and butt-joined as well. transmitted in two points each. As a consequence, For transferring the forces from the diagonal these forces acting along the diagonal members members (N ≤ 1984 kN), the ends of both c,Ed This way, load component 1 of the diagonal are applied in two directions at the joint: the center post beam and the open mortises members is transferred directly into the center • Load component 1 acts perpendicular to the of the diagonal members are cut along their post beam through the ends of the open mortises. angle bisector between the diagonal member angle bisector and butt-joined. The inner part Load component 2 of both diagonal members is and the center post beam. of the diagonal members' open mortises rests transferred into the cleat through the remaining cross sections on the insides of the open mortises, where both forces partly balance each other. The remaining share of this load component, which results from the difference of the opposing forces, is transferred into the bottom chords Node at the center post beam through the notches on the underside of the cleat. Any unbalanced forces resulting from the Nc,Ed=197 kN load transfer through the notches is taken up and N =1921 kN c,Ed released into the bottom chords by additional screws inserted vertically into the cleat. The relatively low compressive force acting along the verti- Nc,Ed=1984 kN *cal member is transferred into the center post beam through a similar tongue and fork joint.

The transmission of compressive force between Nc,Ed=1246 kN the two bottom chords is achieved through a butt joint. The force moment acting on this point in the M =52,42 kNm y,Ed bottom chord can be split into two horizontally acting forces. The tensile force component acting on the top of the bottom chords is transferred through the notched joint between the bottom My,Ed=52,42 kNm chords and the above cleat. As described above,

Load acting on the center post beam node the unbalanced forces resulting from the notched chord-cleat joint are taken up by additional screws. © SWG Engineering

10 TIMBER CONSTRUCTION USING BAUBUCHE JOINT DETAIL—MAIN TRUSS, PRIMARY DIAGONAL MEMBER The planners designed the structural sections used in this project: approx. 4.9 N/ Increased load-bearing capacity thanks system of the main truss so that all mm²). The assumed edgewise shear strength to a variation of the step joint: notched diagonal members are in compression of laminated veneer lumber is 8 N/mm² for joint, multiple step joint, extended multiple and all vertical members are in tension. this type of joint. step joint • If the shear strength is not sufficient, the contact Connecting diagonal members area must be enlarged (e.g. by making Depending on the forces to be transferred, the contact area longer). This goal can be diagonal members are joined using a multiple achieved by mounting a cleat. The diagonal step joint or an extended multiple step joint. force is thus redirected into a shallower A multiple step joint is a succession of several angle. The corresponding load component notched joints. acting perpendicular to the chord member is transferred into the chord through lateral As a rule, the shear force acting on the notches compression. in the chord is decisive when verifying the structural strength of the joint. The following A comparison of the load-bearing capacities of Notched joint design considerations improved the load-bearing a conventional notched joint and a multiple step F = 998 kN capacity of the joints: joint or an extended multiple step joint establish c,Rk • According to ETA-12/0354, the shear strength the following capacities for the present use case: of BauBuche is assumed to be 4.5 N/mm² (see illustrations on the right). (when taking into account the specific cross-

D3-9 (Achse 13) Diagonale und Pfosten an Obergurt, M 1:5 D3-11 (Achse 13) --> spiegelbildlich ausf�hren (Achse B7)

W�rth ASSY plus CS 13 C.1 Gesamt 42 ü 12 - VG 1x6 ü12x300 + 3x6 ü12x380 + 100 220

1 3x6 ü12x430

Obergurt 28/32

0 8 3 0 x 8 2 3 1 0 x 0 0 ü 2 8 3 1

3 0 x ü x 2 0 8 2 3 1 2 1 4 ü Stahlbleche S235JR , M 1:5 Stahlteil oben, M 1:5 ü x 0 2 3 1 4 ü x 0 2 3 1 4 ü x 26.0 26.0 2 324 1 ü Multiple step joint 165 63.5 10.0 10.0 101.0 10.0 10.0 63.5 226 2 Laschen 240x12x1023 2 Laschen 240x12x1023 7 30 294 73 70 6

7 8 Bohrung ü18 3 20.017.5 49.0 49.0 49.0 49.0 49.0 17.520.0 5 F = 2178 kN, many small notches to 73 . c,Rk 5 3 Bo ü18 5 4 73 3 Bo. ü18 3 Bo. ü18 4

5 7 5

9 2 7 53 67 67 53 53 67 67 53 .4 9 4,5 4,5 3 7

0 93 70 70 40 ° Senkung 0 5 73 increase the shear and compression area 5 0 0 1 0 06 4 3 2 3 0 6 6 0 2 0 7 7 5

9 280 ➞ 10 63 56 56 294 30 Di ag 70 70 Stahlbauschrauben on Neben-Fachwerkbinder 70 a 0 10 26 10 10 26 10 0 le 0 D2 70 70 3 2 15 b = 20 cm, BauBuche 3 x M16x220 -10.9 1 70 x 2 3 N =1984 kN 2 56 56 1 0/ C,Ed 42 Bo. ü13 + U-Sch. 30/17/3 0 32 5 1 1 2 2 mit Senkung ü24 Lönge Gew. = 24,5 2 2 306 294 170 36 Bo. ü11 0 36 Bo. ü11

0 0 2 2 x 2 Laschen - S355 !!!

7 4 4 mit Senkung 0 mit Senkung 10 63 95x10x324 0 0 3 2 0 5 0 0 7 Grundplatte 280x30x580 - S355 !!! 7 7

4,5 4 4 0 26 1 Schubknaggen - S355 !!!

0 6 2 63x20x240 0 0 0 7 7 1 4,5 4 x 36 = 144 St�ck 4 Bo ü20 4 Bo ü20 0 ü 10 x 80 - TG 4 Bo ü20 0 1 0 7 0 8 1 7 7 2 1 2 2 W�rth ASSY 3.0 4 4

W�rth ASSY plus CS 9 9 4,5

1 3 3 4x ü 12 x 280 - VG 0 50 2 2 3 0 0 0 1

35 45 40 45 35 5 15 45 40 45 15 15 45 40 45 15 1 1 4 5 6 0 0 2 2 1 1 7 7 2 2 4 4 0 1 9 9

4,5 3 Ausfrösung 40/45 mm 40 4

Holzknagge b�ndig mit Stahlteil! 5 0 7 L = 320 mm 3

226 73 73 73 73 73 73 106 0 0 0 7 7 7 770 4 4 5 5 4 4 0 0 0 7 7 7 Neben-Fachwerkbinder 8

D2 b = 20 cm, BauBuche 2 / 6 0 0 0 7 1

7 7 z l 8 o 8 2 / h ➞ 2 Stahlteil unten, M 1:5 l / 8

e 8 t

z t l i z 0 l o 0 0 7 M o 7 7 h h

n 26.0 26.0

n 3 e 24 t e i 12 12 12 12 t 63.5 10.0 10.0 101.0 10.0 10.0 63.5 i 6 e 2 e

S Extended multiple step joint S

0 0 294 30 7 7

N = 1147 kN 6 6 ° °

7 7 Bohrung ü18 t,Ed 2 2 3 3

5 6 5 6 . . 1 80 160 80 2 2 7 7 . 3 Bo ü18 5 5 1 1 Fc,Rk= 3325 kN, extending the contact 4 4

° 5 5 9 45 60 60 60 15 45 60 60 60 15 7 9 4,5 .4 4,5

2 0 0 15 30 30 30 30 30 30 30 15 Senkung 7 40 70 70 93 5 5 15 60 60 60 45 15 60 60 60 45 5 0 0 20 240 20 2 3 Example of an extended multiple step joint area through additional notches 3 2 2 1 1 0 2 5

5 280 240 240 0

1 63 10 0

0 30 294 . 4 2 C

D3-27 (Achse 13) Diagonale und Pfosten an Untergurt, M 1:5 5 5 Stahlbleche S235JR , M 1:5 © SWG Engineering © SWG Engineering 42 Bo. ü13 5 D3-29 (Achse 13) --> spiegelbildlich ausf�hren (Achse B7) 2 2 Laschen 240x12x883 2 Laschen 240x12x883 mit Senkung ü24 126 294 160 C.1 2 x 2 Laschen - S355 !!! 20 240 20 80 160 80 63 10 95x10x324 1

6 6 3 7 7

15 30 30 30 30 30 30 30 15 5 Grundplatte 280x30x580 - S355 !!! 4 4,5 4 6 6 2 2 0 8 8 8 1 Schubknaggen - S355 !!! 2 2 2 / / / 6 6 2 8 8

63x20x240 1 0 0

z z 0 7 7 l l z 1 l o o o h h 6 h n n

l 4,5 2 e e e t t t i i t i e e 1 0 0 0 S M S 7 8 1 0 0 2 2 0 7 7 7 4,5 4 x 36 = 144 St�ck 0 1

ü 10 x 80 - TG 6

TIMBER CONSTRUCTION USING BAUBUCHE 0 11 0 2 0 7 7 0 W�rth ASSY 3.0 7 1

3 4,5 36 Bo. ü11 4 36 Bo. ü11 5

0 0 mit Senkung 0 7 7

7 mit Senkung 3

63 73 73 73 73 73 73 79 7 7 0 0 8 8 0 0 0 7 7 7 3 3

8 8 580 Holzknagge b�ndig mit Stahlteil! 8 8 7 7 0 0 0 0 8 8 0 7 7 7 Holzbauarbeiten 0 0 e 0 7 7 7 h c

u Alle Hølzer des Haupt- und Nebenfachwerkbinders sind in Furnierschichtholz (BauBuche GL75) auszuf�hren. B u a 0 0 B - 0 7 7 Alle versenkten Schrauben sind entsprechend �ber die ganze Setztiefe zu verstøpseln! 7 2 3 / 0

2 56 56

n 70 70 BAUSTOFFE sofern nichts anderes angegeben: 0 e t 8 0 s 2 7 70 70 o D f Nadelholz C24, KVH, Holzfeuchte u<15 % Stahlteile S235 P Senkbohrung ü50 56 56 iag on BS-Holz Gl24c Stahlteile S355 al Stahlbauschrauben mit Querholzd�bel e 70 1 1 2 2 2

8 2 2 /32 70 3 x M16x220 -10.9 BS-Holz Gl28c

6 10 26 10 10 26 10 2 1 + U-Sch. 30/17/3 Brettsperrholz Lönge Gew. = 24,5 0 3 6 6 BauBuche GL70 Stahlbeton C25/30 (bewehrt) 7 7 5 2 4 0 0 Holzweichfaserplatte Beton (unbewehrt) 5 9

Abdeckung BauBuche 0

5 Gipsbauplatten Perimeterdömmung (Syyrodur) 4 9 5 (Brandschutz) 45 60 60 60 15 45 60 60 60 15 4 5 Nichttragende Wönde Wörmedömmung (PUR-Hartschaum) 0 8 0 1 63 3 °

3 15 60 60 60 45 15 60 60 60 45 5 7 0 . 3 5 ° 7 9

6 1 2

0 1 . 73 5 3

0° 73 20.0 17.5 49.0 49.0 49.0 49.0 49.0 17.5 20.0 2 2 .0 0 1 1 0 5 9 73

9 240 240 73 0 1 0 3 2 73 2 60 60 0 2 79 120 ... RM/... d

0 3 4 ... RM/... c x 0 2 8 0 1 3 8 0 ü x 0 Beschriftungen ergönzt RS/08.01.2019 b

2 0 2 8 0 3 1 0 3 x ü x 0 3 2 0 2 8 x Stahlknagge oben verlöngert RS/19.12.2018 a 1 0 1 3 2 ü 3 ü x 1 x 2 ü W�rth ASSY plus CS 2 1 ÄNDERUNG/ERGÄNZUNG GEZ./DATUM INDEX 1 ü ü Gesamt 42 ü 12 - VG 3x6 ü12x300 + PRßFINGENIEUR Pr�fstempel: Untergurt 28/32 - BauBuche 3x6 ü12x380

1 1x6 ü12x430 320

Auf ßbereinstimmung mit der statischen 0 2 8 Schnitt 1-1

0 erec nung un au ons ru e 3 B h d f k t ktiv 5 1 Richtigkeit gepr�ft 9 4 Bauvorh.: SWG Produktionshalle Am Bahnhof ... 9

4 74638 Waldenburg 0 0 0 0 Schraubenwerk Gaisbach GmbH 9 7 6 8 8 4 2 2 2 2 Bauherr: SWG Schraubenwerk Gaisbach GmbH Am Bahnhof 50 9 4 D-74638 Waldenburg

Planung: Hermann Kaufman + Partner ZT GmbH Tel. +49 (0)5572 58174 9 Eisenbahnstraäe 20 4 Sportplatzweg 5 Fax ... 76761 R�lzheim

0 A-6858 Schwarzach 8 1 5 Tel.: 07272 7775329 3 0 2 Hauptsitz 63 73 73 73 73 73 73 79 Am Bahnhof 50 Detail D3-9/D3-11 und D3-27/D-29 74638 Waldenburg 506 63 10 Hauptfachwerkbinder Achse 13/15/17 Tel.: 07942 100-0 580

gepr�ft: Dat.: 08.01.2019 Blattgrøäe: Schnitt 2-2 gez.: RM A0 (1189 x 841) Proj.-Nr. Plan-Nr.

Datei: 18-0005_AP_Fachwerk_HT.2d D3-3 (Achse 13) Diagonale und Pfosten an Obergurt, M 1:5 D3-4 (Achse 13) Diagonale und Pfosten an Obergurt, M 1:5 D3-16 (Achse 13) --> spiegelbildlich ausführen (Achse B3) C.7 13 Senkung ø14 x 50 mm C.6 13 Verschließen mit Buche ø14 320 320 Senkung ø14 x 50 mm Würth ASSY plus Cyl 280 100 220 Verschließen mit Buche ø14 200 100 220 6 x 6 ø10 x 750 - VG 40 40 40 40 40 40 40 35 50 50 50 50 50 35 Würth ASSY plus Cyl 40 40 40 40 40 35 50 50 50 50 50 35 4 x 6 ø10 x 750 - VG 0 Obergurt 28/32 - BauBuche 5

Obergurt 28/32 - BauBuche 0 8 2

2 2 0 96 0 91 6 6 1 1 6 6 8 8 5 5 90.000° 85 85 Bem.: Ausbildung des NT-Anschluss Bem.: Ausbildung des NT-Anschluss 32 2 0 4/ /3 5 2 28 7 le le sh. Plan FW-3! na sh. Plan FW-3! na go go ia ia 2 D 2 D 4 3 0 / 0 2 n e 2 Neben-Fachwerkbinder t Neben-Fachwerkbinder

8 s

0 o

D2 b = 20 cm, Baubuche f D2 b = 20 cm, Baubuche

P Extended multiple step joint ➞ 2

3 Würth ASSY 3.0 SK /

Würth ASSY 3.0 SK 8 2 2 x 2ø 8 x 380 - TG Nt,Ed= 608 kN 2 x 2ø 8 x 380 - TG n e t s

2 2 o

4 4 f

0 0 P Neben-Fachwerkbinder 81 D2 b = 20 cm, Baubuche Connecting the vertical members Depending on the acting forces, the vertical members can be joined Neben-Fachwerkbinder D2 b = 20 cm, Baubuche 260 36 pcs Würth ASSY®plus FT using one of the following two options: 260 10 x 750 mm ➞ 0 150 F = 639 kN If only a small force is applied,0 long full-thread150 screws are used exclusively 3 0 ax,Rd 3 0 5 5

4 2 4 5 5 2 in the joint, with the screws2 aligned perpendicular to the top chord and Ausfräsung 40/45 mm 40 Ausfräsung 40/45 mm Ausfräsung 40/45 mm 40 Ausfräsung 40/45 mm ® 40 200 40 L = 320 mm L = 320 mm L = 200 mm in parallel to the grain of the vertical Lmember. = 200 mm The Würth ASSY plus FT

280 320 200 full-thread screws used320 here have a diameter of 10 mm and need only be anchored 314 mm deep if aligned in parallel to the grain in order to achieve their maximum load-bearing capacity in the vertical member Vertical members are connected to the top chord using ASSY®plus FT full-thread 5 5

2 (load-bearing capacity of 2 steel f ). screws installed parallel to the grain of the vertical member. tens,k 5 5 5 5 0 0 0 0 0 0 0 0 . 7 . 6 4 4 2 2 2 C © SWG Engineering C 5 5 5 5

5 Highly stressed vertical members are joined 5 2 2 using steel parts. The vertical members consist D3-9 (Achse 13) Diagonale und Pfosten an Obergurt, M 1:5 D3-11 (Achse 13) --> spiegelbildlich ausf�hren (Achse B7) of three pieces (80 mm/160 mm/80 mm) that W�rth ASSY plus CS 13 C.1 Gesamt 42 ü 12 - VG 1x6 ü12x300 + 3x6 ü12x380 + 100 220

have been cut out to house two steel ties. The 1 3x6 ü12x430 ® Obergurt 28/32 combination with the 10 x 80 mm Würth ASSY 0 8 3 0 x 8 2 3 1 0 x 0 0 ü 2 8 3 1

3 0 x ü x 2 0 8 2 3 1 2 1 4 ü Stahlbleche S235JR , M 1:5 Stahlteil oben, M 1:5 ü x 0 2 3 1 4 3.0 wood screws aligned perpendicular to the ü x 0 2 3 1 4 ü x 26.0 26.0 2 324 1 ü 165 63.5 10.0 10.0 101.0 10.0 10.0 63.5 226 N =1984 kN 2 Laschen 240x12x1023 2 Laschen 240x12x1023 7 30 294 D3-21 (Achse 13) Diagonale und Pfosten an Untergurt, M 1:5 D3-22 (Achse 13) Diagonale und Pfosten an Untergurt, M 1:5 73 70 c,Ed 6

shearing surface plane creates a quadruple- 8 Bohrung ü18 7

3 20.017.5 49.0 49.0 49.0 49.0 49.0 17.520.0 5 73 . 5 3 Bo ü18 5 4 73 3 Bo. ü18 3 Bo. ü18 4

5 7 5

9 2 7 53 67 67 53 53 67 67 53 .4 9 4,5 4,5 3 7 0 93 70 70 40 ° Senkung 0 5 shear joint with the concealed steel ties. These 73 5 0 0 1 0 06 4 3 ® 2 3 0 6 6 0 D3-34 (Achse 13) --> spiegelbildlich ausführen (Achse B3) 2 0 7 7 5 Würth ASSY plus FT, 9 280

10 63 294 30 D 56 56 ties are connected to a cap plate using three ia g 70 70 Stahlbauschrauben on Neben-Fachwerkbinder 70 a 0 10 26 10 10 26 10 0 le 0 D2 70 70 3 2 15 b = 20 cm, BauBuche 3 x M16x220 -10.9 1 70 x 2 3 2 56 56 dia. 12 mm 1 0 / 42 Bo. ü13 + U-Sch. 30/17/3 0 32 5 1 1 2 2 mit Senkung ü24 C.7 13 C.6 13 2 2 M16 (10.9) steel construction screws. The cap Lönge Gew. = 24,5 306 294 170 36 Bo. ü11 0 36 Bo. ü11

0 0 2 2 x 2 Laschen - S355 !!!

7 4 4 mit Senkung 1 x 6 pcs of 12 x 300 mm 0 mit Senkung 10 63 95x10x324 0 0 3 2 0 5 1 0 0 plate is anchored in the top chord using Würth 7 Grundplatte 280x30x580 - S355 !!! 7 7

➞ 4,5 4 4 0 200 26 1 Schubknaggen - S355 !!! 3 x 6 pcs of 12 x 380 mm 0 6 2 63x20x240 0 0 0 7 7

® 1 4,5 ASSY plus FT full-thread screws with a diameter 4 x 36 = 144 St�ck 4 Bo ü20 4 Bo ü20 0 ü 10 x 80 - TG 4 Bo ü20 0 1 0 7 0 8 1 7 7

280 2 1 2 2 W�rth ASSY 3.0 4 4

W�rth ASSY plus CS 9 9 3 x 6 pcs of 12 x 430 mm 4,5 1 3 3 4x ü 12 x 280 - VG 0 50 2 2 3 0 0 0 1

35 45 40 45 35 5 15 45 40 45 15 15 45 40 45 15 1 1 4 5 6 0 0 2 2 1 1 7 7 2 2 4 4 of 12 mm. As these screws are not arranged 0 1 9 9

4,5 3 Ausfrösung 40/45 mm 40 4

Holzknagge b�ndig mit Stahlteil! 5 0 7 L = 320 mm 3 in parallel to the tensile force acting along the 226 73 73 73 73 73 73 106 0 0 0 7 7 7 770 4 4 5 5 2 4 4 3 0 2 0 0 7 / 7 7 ➞ 3 8

vertical member, this creates an unbalanced / Neben-Fachwerkbinder 8 2 0

4 x 36 pcs = 144 pcs Würth D2 2 b = 20 cm, BauBuche / 6 2 0 n 0 0 7 1

7 7 z l e 8 n o 8 t 2 / h 2 Stahlteil unten, M 1:5 l / e 8 s

e 8 t t

® z t l i z 0 o

force acting in parallel to the cleat in addition to l o s 0 0 7 f M o 7 7 h h

n 26.0 26.0 o ASSY with countersunk head,

n 3 e 24 P f t e i 12 12 12 12 t 63.5 10.0 10.0 101.0 10.0 10.0 63.5 i 6 e 2 e P S S

0 0 294 30 7 7 6 6

° °

N = 1147 kN 7 7 Bohrung ü18 the force acting along the screw axis. Through 2 2 3 3

c,Ed 5 6 5 6 . . 1 80 160 80 2 2 10 x 80 mm 7 7 . 3 Bo ü18 5 5 1 1 4 4

° 5 5 9 45 60 60 60 15 45 60 60 60 15 7 9 4,5 .4 4,5

2 0 0 15 30 30 30 30 30 30 30 15 Senkung 7 40 70 70 93 5 5 0 0 15 60 60 60 45 15 60 60 60 45

the cap plate, this unbalanced force is in turn 5 0 0 4 4 20 240 20 2 3 3

2 2 2 2 1 1 0 2 5

Holzbauarbeiten5 280 240 240 0

1 63 10 0

0 30 294 . 4 balanced by the force acting along the diagonal 2 Di Di C a a D3-27 (Achse 13) Diagonale und Pfosten an Untergurt, M 1:5 5 go go Alle Hölzer des Haupt- und5 Nebenfachwerkbinders sind in Furnierschichtholz (BauBuche GL75) auszuführen.Stahlbleche S235JR , M 1:5 n n 42 Bo. ü13 5

a a 2 le le D3-29 (Achse 13) --> spiegelbildlich ausf�hren (Achse B7) 2 Laschen 240x12x883 2 Laschen 240x12x883 mit Senkung ü24 24 member. 24 /3 /3 Joining a highly stressed BauBuche vertical member with integratedC.1 ties 126 294 160 2- 2- Alle versenkten Schrauben sind entsprechend über die ganze Setztiefe zu verstöpseln! 2 x 2 Laschen - S355 !!! Ba Ba 20 240 20 80 160 80 63 10 95x10x324

u u 1 B B 6 6 3 u u 7 7

c c 5 h h 15 30 30 30 30 30 30 30 15 Grundplatte 280x30x580 - S355 !!! 4 4,5 e e 4 6 6 BAUSTOFFE sofern nichts anderes angegeben: 2 2 0 8 8 8 1 Schubknaggen - S355 !!! 2 2 2 / / / 6 6 2 8 8

63x20x240 1 0 0

z z 0 7 7 l l z 1

96 l o o o h h 6 h n n

l 4,5 2 e e e t t t

i Nadelholz C24,i KVH, Holzfeuchte u<15 % Stahlteile S235 © SWGt Engineering i e e 1 0 0 0 S M S 7 8 1 0 0 2 2 0 7 7 ° ° 7 4,5 6 .00° 6 .00° 4 x 36 = 144 St�ck BS-Holz Gl24c Stahlteile S355 0 90 0 90 0 . . 1

5 5 ü 10 x 80 - TG 6 0 0 2 0 7 7 0 3 3 W�rth ASSY 3.0 7 BS-Holz Gl28c 1

3 4,5 36 Bo. ü11 4 36 Bo. ü11 5

0 0 mit Senkung 0 7 7 6 6

7 mit Senkung 3

1 1 Brettsperrholz 63 73 73 73 73 73 73 79 7 7 0 0 8 8 0 0 0 7 7

7 BauBuche GL70 Stahlbeton C25/30 (bewehrt)

0 0 3 3

2 2 8 8 580 Holzknagge b�ndig mit Stahlteil! 8 8 7 7 0 0

Untergurt 28/32 - BauBuche Untergurt 28/32 - BauBuche 0 0 8 8 0 Holzweichfaserplatte Beton (unbewehrt) 7 7 7 Holzbauarbeiten

Gipsbauplatten Perimeterdämmung (Syyrodur) 0 0 e 0 7 7 7 h c

u Alle Hølzer des Haupt- und Nebenfachwerkbinders sind in Furnierschichtholz (BauBuche GL75) auszuf�hren. B u

a Nichttragende Wände Wärmedämmung (PUR-Hartschaum) 0 0 0 0 B - 0 7 7 Alle versenkten Schrauben sind entsprechend �ber die ganze Setztiefe zu verstøpseln! 8 8 7 2 3 / 2 2 0

2 56 56

8 2 2 /32 70 3 x M16x220 -10.9 BS-Holz Gl28c

6 10 26 10 10 26 10 2 1 + U-Sch. 30/17/3 Brettsperrholz Lönge Gew. = 24,5 0 3 6 6 BauBuche GL70 Stahlbeton C25/30 (bewehrt) 7 7 5 12 TIMBER CONSTRUCTION USING BAUBUCHE 2 4 0 0 Holzweichfaserplatte Beton (unbewehrt) 5 9

Abdeckung BauBuche 0

5 Gipsbauplatten Perimeterdömmung (Syyrodur) 4 9 5 (Brandschutz) 45 60 60 60 15 45 60 60 60 15 4 5 Nichttragende Wönde Wörmedömmung (PUR-Hartschaum) 0 8 0 1 63 3 °

3 15 60 60 60 45 15 60 60 60 45 5 7 0 . 3 5 ° 7 9

6 1 2

0 1 7 Würth ASSY plus Cyl . 3 5 3

40 40 40 40 40 40 40 35 50 50 50 50 50 35 40 40 40 40 40 ° 35 50 50 50 50 50 35 2 2 0 73 20.0 17.5 49.0 49.0 49.0 49.0 49.0 17.5 20.0 .0 0 1 1 0 5 ... RM/... d 4 x 6 ø10 x 750 - VG 9 73

9 240 240 73 0 1 0 3 280 2 73 2 60 60 0 320 200 320 2 BSP-Plattenanschluss entfernt RS/30.01.2019 c Würth ASSY plus Cyl 79 120 ... RM/... d 6 x 6 ø10 x 750 - VG 1 Senkung ø14 x 50 mm Senkung ø14 x 50 mm 0 ...Diagonalenhöhe korrigiert RS/03.01.2019 b 3 4 ... RM/... c x 0 2 8 Verschließen mit Buche ø14 Verschließen mit Buche ø14 0 1 3 8 0 ü x 0 Beschriftungen ergönzt RS/08.01.2019 b

2 0 2 8 0 3 1 0 3 x ü x 0 3 Detailüberschriften ergänzt RS/29.11.2018 a 2 0 2 8 x Stahlknagge oben verlöngert RS/19.12.2018 a 1 0 1 3 2 ü 3 ü x 1 x 2 ü W�rth ASSY plus CS 2 1 ÄNDERUNG/ERGÄNZUNG GEZ./DATUM INDEX 1 ü ü Gesamt 42 ü 12 - VG ÄNDERUNG/ERGÄNZUNG GEZ./DATUM INDEX 3x6 ü12x300 + PRßFINGENIEUR Pr�fstempel: Schnitt 1-1 Untergurt 28/32 - BauBuche 3x6 ü12x380 1 1x6 ü12x430 PRÜFINGENIEUR320 Prüfstempel:

Auf ßbereinstimmung mit der statischen 0 2 8 Schnitt 1-1

0 erec nung un au ons ru e 3 B h d f k t ktiv 5 1 Richtigkeit gepr�ft 9 4 Bauvorh.: SWG Produktionshalle Am Bahnhof ... 9

4 74638 Waldenburg 0 0 0 0 Schraubenwerk Gaisbach GmbH 9 7 6 8 8 4 2 2 2 2 Bauherr: SWG Schraubenwerk Gaisbach GmbH Am Bahnhof 50 9 4 Auf Übereinstimmung mit der statischen D-74638 Waldenburg Planung: Hermann Kaufman + Partner ZT GmbH Tel. +49 (0)5572 58174 9 Eisenbahnstraäe 20 4 Berechnung und auf konstruktive Sportplatzweg 5 Fax ... 76761 R�lzheim

0 A-6858 Schwarzach 8 1 5 Tel.: 07272 7775329 3 0 2 Richtigkeit geprüft Hauptsitz 63 73 73 73 73 73 73 79 Detail D3-9/D3-11 und D3-27/D-29 Am Bahnhof 50 Bauvorh.: SWG Produktionshalle 74638 Waldenburg 506 63 10 Hauptfachwerkbinder Achse 13/15/17 Tel.: 07942 100-0 580 Am Bahnhof ... 74638 Waldenburg gepr�ft: Dat.: 08.01.2019 Blattgrøäe: Schnitt 2-2 gez.: RM A0 (1189 x 841) Proj.-Nr. Plan-Nr.

Datei: 18-0005_AP_Fachwerk_HT.2d Schraubenwerk Gaisbach GmbH Bauherr: SWG Schraubenwerk Gaisbach GmbH Am Bahnhof 50 D-74638 Waldenburg

Planung: Hermann Kaufman + Partner ZT GmbH Tel. +49 (0)5572 58174 Eisenbahnstraße 20 Sportplatzweg 5 Fax ... 76761 Rülzheim A-6858 Schwarzach Tel.: 07272 7775329 Hauptsitz Am Bahnhof 50 Detail D3-3/ D3-4/16, D3-21, D3-22/34 74638 Waldenburg Hauptfachwerkbinder Achse 13/15/17 Tel.: 07942 100-0

geprüft: Dat.: 03.01.2019 Blattgröße: gez.: RM A0 (1189 x 841) Proj.-Nr. Plan-Nr.

Datei: 18-0005_AP_Fachwerk_HT.2d Pos D3.1 und D3.2: Hauptfachwerkbinder Zugstoss M 1:5 Im Obergurt 2x (Achse B6 und C2) C.7 Im Untergurt 4x (Achse B1,B5, C3 und C7) 2 3 / 8 2

n Sectional and detailed drawing of a steel-BauBuche e t s o f P tension joint using ASSY®plus FT full-thread screws with a countersunk head.

/32 96 184 24 ale on ag Di

1 105 20 70 20 105 5 5 5 1 5 5 3 5 5 5 0 5 5 7 5 0 7 9

5,5 5,5 2 0 4 7

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

Untergurt 28/32 - BauBuche 1 50 220 50 Untergurt 28/32 - BauBuche 2 x 3 Bo. M27x110 - 10.9 10 300 10 + U-Sch. 50/8 Länge Gew. = 35,5 320 1.45 320

Kopfplatte S355JO 280x30x260 Seitenblech S355JO 270x20x987 Schnitt 1-1 Steife S355JO 130x15x260 Würth ASSY plus Cyl Würth ASSY plus CS Würth ASSY plus CS Würth ASSY 3.0 Würth ASSY 3.0 Würth ASSY plus CS Würth ASSY 3.0 Würth ASSY plus CS Ansicht Seitenblech 5 x 6 ø10 x 750 - VG 2 x 2 ø10 x 260 - VG 4 x 8 ø12 x 180 - VG 2x2 ø 10 x 80 - TG 2 x 2 ø 10 x 80 - TG 4 x 8 ø12 x 180 - VG 2 x 2 ø 10 x 80 - TG 2 x 2 ø10 x 260 - VG

5 Würth ASSY plus CS Würth ASSY plus CS 5

0 ø12 x 160 - VG ø12 x 160 - VG 6

0 3

6 5

4 6 0

0 6

6 0

0 0 0 8 7

0 0 6 3 2 2 2

7 6 2 3 3

5 6

4 5

5 2 2 5 1 160 3 60 30 30 85 85 85 85 85 85 85 85 85 85 85 85 85 Würth ASSY plus CS 957 85 85 85 57 27 50 957 85 ø12 x 160 - VG Würth ASSY plus CS Würth ASSY 3.0 Würth ASSY plus CS 280 130 30 30 130 ø12 x 160 - VG 2 x 2 ø 10 x 80 - TG 4 x 8 ø12 x 180 - VG Würth ASSY plus CS 4 x 8 ø12 x 180 - VG

2002 Seitenblech S355JO 270x20x957

Pos D3.1 und D3.2: Hauptfachwerkbinder Druckstoss M 1:5 Im Obergurt 2x (Achse B3 und C5) © SWG Engineering B.3 Montageschrauben Würth ASSY 3.0 Im Untergurt 1x (Achse C) 2 ø 8 x 300 - TG C.5

Querzugsicherung 1 320 Würth ASSY plus Cyl Stoss 5 ø8 x 200 - VG 50 55 55 55 55 50 40 97 53 53 53 97 97 53 53 53 97 40

Obergurt 28/32 0 Obergurt 28/32 0 BauBuche 1 BauBuche Holzbauarbeiten 0 8 2 Alle Hölzer des Haupt- und Nebenfachwerkbinders sind in Furnierschichtholz (BauBuche GL75) auszuführen. 0 8 1 Alle versenkten Schrauben sind entsprechend über die ganze Setztiefe zu verstöpseln!

BAUSTOFFE sofern nichts anderes angegeben: Nadelholz C24, KVH, Holzfeuchte u<15 % Stahlteile S235 56 352 352 56 BS-Holz Gl24c Stahlteile S355 BS-Holz Gl28c Brettsperrholz 2 /3 D BauBuche GL70 Stahlbeton C25/30 (bewehrt) 24 ia le go na na Holzweichfaserplatte Beton (unbewehrt) go le ia 2 24 D 3 / Gipsbauplatten Perimeterdämmung (Syyrodur) / 32

1 0 2 0 2 Nichttragende Wände Wärmedämmung (PUR-Hartschaum) n e t s o f

2 P 4 0 1 2 0 Würth ASSY plus CYL 2x5 ø 10 x 750 - VG Tension or compression joints using

83 ... RM/... d ® ... RM/... c ASSY plus FT full-thread screws Schraubenanzahl in Pos. D3.1 und D3.2 korrigiert RS/30.01.2019 b Interne Änderungen, Schraubenbezeichnungen, Einarbeitung Korrekturen vom Prüfer vom 21.12.2018 und Beschriftungen ergänzt RS/08.01.2019 a

ÄNDERUNG/ERGÄNZUNG GEZ./DATUM INDEX Würth ASSY plus CYL 5 ø 10 x 650 - VG Prüfstempel: 1 Due to a restriction of timber lengths for PRÜFINGENIEUR 50 100 50 50 55 55 55 55 50 200 320 transport, manufacturing a hall beam that Auf Übereinstimmung mit der statischen Würth ASSY plus Cyl Würth ASSY plus Cyl Schnitt 1-1 Berechnung und auf konstruktive 9 x 4 ø8 x 200 - VG 9 x 4 ø8 x 200 - VG Richtigkeit geprüft Bauvorh.: SWG Produktionshalle

3 Am Bahnhof ... 3 8 0 4 5

0 0 spans the entire length of the hall is hardly

7 7 74638 Waldenburg 0 3 0 3

0 5 Schraubenwerk Gaisbach GmbH 3 5 0 5 5

3 Bauherr: SWG Schraubenwerk Gaisbach GmbH 4 4 0 3

0 Am Bahnhof 50 3 5 0 5 5 5

3 D-74638 Waldenburg 4 4

0 ever possible. In order to be able to join the 0 3 2 0 3 3 Planung: Hermann Kaufman + Partner ZT GmbH Tel. +49 (0)5572 58174 0 5 5 Eisenbahnstraße 20 5 3 4 4 5

0 Sportplatzweg 5 Fax ...

3 76761 Rülzheim 0

3 A-6858 Schwarzach 0 5 5 Tel.: 07272 7775329 3 4 4 0 5 3 5

0 Hauptsitz 3 individual parts on site, the compression and 0

3 Am Bahnhof 50 0 0 7 7 0 8

5 Zugstoss und Druckstoss 4 3 74638 Waldenburg 3 Hauptfachwerkbinder Tel.: 07942 100-0 704 tension joints need to be economically feasible. geprüft: Dat.: 08.01.2019 Blattgröße: gez.: RM A0 (1189 x 841) Proj.-Nr. Plan-Nr. Datei: 18-0005_AP_Fachwerk_HT.2d A combination of ASSY®plus FT screws and 45° angled washers is recommended for transferring high loads. Example of a metal-wood joint using ASSY®plus FT full-thread screws and 45° angled washers.

In addition, lubricating grease is applied to reduce friction when screwing into BauBuche.

TIMBER CONSTRUCTION USING BAUBUCHE 13 PLANNINGSafely and efficiently working withAND BauBuche requiresPREPARATION meticulous planning and preparation. The most important findings from our pioneering project have been summarized below.

Trimming BauBuche beams and cutting a multiple step joint to take up compressive loads.

Cutting to size Cooperation with CNC machine manufacturers would be recommended for the preparation and cutting of the timber. When preparing multiple step joints in compression, the following aspects of CNC trimming need to be taken into consideration:

• Shorter calibration intervals to ensure the perfect fit of the joint • Shorter service life of the carbide cutting edges • Minimization of component sizes due to the higher weight of the components • Reduced production output of the woodworking machines

14 TIMBER CONSTRUCTION USING BAUBUCHE Make sure to provide sufficient storage space early on. Ensuring the secure interim storage of the pre-assembled PROJECT PLAN- truss structures is essential. NING, PROCESS PLANNING, AND STORAGE.

Safe and efficient assembly requires detailed project planning, adjusted processes and prior capacity and storage space planning.

Protection against moisture Moisture may become a problem when working with BauBuche. Therefore, take precautions to avoid a penetration of moisture. • Break cutting edges to apply a sufficient amount of hydrophobic agent • Allow for sufficient storage space or—if outsourcing the impregnation against moisture – just-in-time production and delivery

TIMBER CONSTRUCTION USING BAUBUCHE 15 SCREWS AND ASSEMBLY DETAILS Around 250,000 ASSY® screws were used in the SWG production hall. Next to providing more detailed assembly information, we will also explain the advantages of the new ASSY® 4,

Pre-drilling for ASSY® screws with longer threads * Note: Using the Merk/Zübling drilling system, a simple dust protection and a conventional drill jig is recommended for large pre-drilling depths. • Assembly of truss butt joints using roof truss jigs • Execution of secure steel-BauBuche joints (hard joint application) by using driving tools in conjunction with torque angle gauges and documenting the tightening torque for quality assurance purposes • Simple assembly of strong joints using screws in tension in combination with 45° angled washers and a suitable fire-resistant cover • High-strength connections thanks to steel ties Detailed planning, exact pre-drilling and careful assembly help prevent fasteners from colliding in such joints.

On-site pre-drilling and countersinking for screw connections in the multiple step joint. The Würth BS13SEC drill driver is a robust and powerful allrounder.

16 TIMBER CONSTRUCTION USING BAUBUCHE Do not forget to allow for personal protective equipment such as hearing or dust protection in your project plans. A protective cover made from STEEL-BAUBUCHE JOINT cardboard is a very pragmatic aid. Creating tension joints and nodes Combining load-transferring metal ties with 45° capable of bearing high loads thanks to angled washers will help reduce the thickness of the steel ties steel ties to be installed. These washers are inserted The key question in every construction project in pre-drilled elongated or round holes and greatly is: How to take up and transfer the forces reduce the steel thickness required compared to acting on the individual joints? There are two angled countersunk holes. possibilities: On the one hand, loads can be transferred from BauBuche component to When a level steel tie surface is required, ASSY®plus BauBuche component and on the other, loads FT full-thread screws with a 90° countersunk head can be transferred into the cross-sectional areas may be used if the beam cross-section is sufficient. of BauBuche components through steel parts. In order to increase the load-bearing capacity of Timber engineering has been and still is relying a screw connection consisting of several full-thread very much on glued laminated timber. While screws, you can use ASSY®plus FT full-thread high loads acting on a structure often made the screws to increase the transverse tensile strength. glulam timber cross-sections and not the fasteners To do so, install an ASSY®plus FT full-thread screw fail, it proves to be the other way around with perpendicular to the multiple screw connection BauBuche structures as a newly “invented” that needs to be reinforced. The screw connections construction method capable of bearing high need to be calculated in compliance with ETA loads. Thanks to the high strength of BauBuche, 11/0190 Appendix 6. Steel-BauBuche joints are the fasteners often fail before the cross-sections. considered hard joint applications. To ensure a smooth transfer of force, screws must be fastened In order to make optimum use of the fasteners using steady torque. Driving tools with integrated and to keep timber cross-sections as slender data-logging system and torque angle gauge would as possible while allowing for the required be recommended for series production. edge distances, it is advisable to arrange the ASSY® wood screws in a specific pattern. By The utilization of hole or drill jigs prevents screws aligning the ASSY®plus FT full thread screws to in connections with multiple screws from touching bear only tensile loads, it is possible to improve each other to create highly accurate steel-BauBuche effectiveness and profitability significantly. joints.

TIMBER CONSTRUCTION USING BAUBUCHE 17 and adjusted if need be. In order to facilitate assembling individual components, workplaces should have an ergonomic height. Customized Assembly aids jigs help avoid assembly inaccuracies and boost profitability when preparing several identical joints. during production BauBuche’s higher specific density may result in a higher tool wear and lower production output. The material properties of BauBuche allow of several pieces are a suitable solution to this According to ETA 11/0190, ASSY® screws with transferring large loads in spite of the building problem: They can be joined on site using special a thread-length-to-diameter ratio of up to 10:1 components’ relatively small cross-sections. As tension and compression joints. can be screwed in directly and do not require any a result, builders can choose from a whole new pre-drilling. ASSY®Plus FT full-thread screws, on the range of design possibilities in hall construction, As compared to spruce, BauBuche has a much other hand, always require pre-drilled holes – a as wide-span structures can now be much higher specific weight. That aspect does not process step that needs to be taken into account sleeker than structures using conventional glued only affect in-plant but also on-site handling and when calculating production times. laminated timber. However, large or particularly transport, with lifting gear also required on the long BauBuche components present a special construction site. To ensure successful project Impregnation with hydrophobing challenge in production, as they cannot be implementation, detailed planning, adjustment of agents, just-in-time delivery and swift moved manually and must be lifted using processes, provision of assembly and transport assembly appropriate gear. Limits to component length due aids as well as capacity and storage space One of the critical properties of BauBuche is its to transport restrictions must also be taken into planning must therefore be thoroughly monitored moisture sensitivity. In order to prevent irreversible account in the planning stage. Beams made up up until the start of the construction works swelling, it is therefore crucial not to expose BauBuche to any moisture. Any BauBuche material must therefore be kept from coming into contact with splash water during transport and be protected from the effects of moisture during assembly. This can be achieved by impregnating the building components with a hydrophobing agent. Before using such agents extensively, we recommend testing them on samples. At the same time, prepare an exact delivery schedule, allowing for interim storage that is as brief as possible, swift assembly of the components and the final assembly and the quick attachment of roof cladding.

In order to keep assembly times as brief as possible, provide required subcarriers or mobile assembling dollies with adequate tools and fasteners. In this endeavor, the support provided by Würth’s construction site logistics and the accessibility of the closest Würth shops in the area is an immense help.

When assembling individual components, you may want to use transport systems or handling hooks. The individual components are assembled at optimum ergonomic height.

18 TIMBER CONSTRUCTION USING BAUBUCHE ON-SITE ASSEMBLY In order to ensure the quick and smooth on-site assembly of building components delivered just in time, your machinery and tools need to be well organized. Given the higher density of BauBuche, suitable screwdrivers, fasteners and accessories must be available on site.

Plan ahead for the transport and interim storage of large prefabricated components. Besides marking off the required storage space and ensuring its accessibility, also specify ways and means to secure your stored goods. Furthermore, take into account that you need to plan and provide lifting equipment to handle the heavier components.

Würth offers service boxes to handle hand and power tools on site. As a rule, components for long spans need to be assembled at greater working heights. For making your employees’ on-site work as safe as possible, you need to provide suitable fall protection equipment.

TIMBER CONSTRUCTION USING BAUBUCHE 19 THE NEW ASSY4: MADE FOR YOUR PERFORMANCE. INNOVATIVE

NEW TIP NEW MILLING SHANK The gently expanding tip with a Moving the milling shank forward into the thread allows for easier POWER linear rise in the counter thread reduces splitting. driving-in of the screw.

New thread The new thread pulls boards together much better, e.g. when building cabinets.

20 TIMBER CONSTRUCTION USING BAUBUCHE INNOVATIVE POWER

NEW BIT The new bit with tight-fit recess for improved grip allows for more efficiency: 80 % of all applications can be done with only two bits.

NEW MILLING POCKETS NEW DRIVE The greater number of milling pockets The larger contact surfaces on the makes it easier to install the screw in new RW drive allow for even better hard surfaces. torque transmission.

TIMBER CONSTRUCTION USING BAUBUCHE 21 Würth and SWG Production offer much more than just good products. Würth’s STRUCTURAL Construction Site Project Management team helps you to optimize time-consuming communication processes TIMBER CONSTRUC- within the framework of major construction projects by establishing well-coordinated planning and production TION IN COOPERA- processes. The sophisticated interplay of building owner, architect, planner, timber construction business, TION WITH WÜRTH and the Würth Group’s construction experts facilitates smooth project handling and minimizes construction costs.

Expert advice—100 % support Würth supports your construction project from the planning stage all the way to its execution: • Technical calculations by our inside staff • Approvals, calculation aids, load tables, expert reports and CAD drawings available for download from wuerth.de/assy • On-site sales service • Product advice provided on the phone by our inside staff • Technical on-site key account support

Your benefit: 100 % support from planning to execution

22 TIMBER CONSTRUCTION USING BAUBUCHE 100 % high-quality products

Würth’s product portfolio is huge. From A in ASSY® to Z in ZEBRA®: Würth offers ASSY® screws, ZEBRA® tools, WÜRTH MASTER power tools and anything else you need to treat material or protect yourself and your workers –supplying our top-quality products worldwide. Many of our Würth-branded products have been designed and produced by Würth. Your benefit: Receiving 100 % quality – in any place, at any time.

Your benefit: Receiving 100 % quality – in any place, at any time.

Detailed information on timber joints – 100 % expertise in timber construction For more detailed information on suitable timber joints, please refer to the ASSY® service site at www.wuerth.de/assy

Your benefit: 100 % expertise in timber construction – caring for every detail

Construction site logistics and delivery service – 100 % product availability Thanks to the Würth Express Service, Würth delivers any required goods within a few hours. Our experts in Construction Site Project Management would be happy to discuss with you the optimum material supply to your construction site. We offer our Bauloc® modules in various sizes, thus guaranteeing permanent material supply and maximum theft protection.

Your benefit: 100 % goods availability around the clock

TIMBER CONSTRUCTION USING BAUBUCHE 23 TIMBER CONSTRUCTION USING BAUBUCHE

Adolf Würth GmbH & Co. KG © by Adolf Würth GmbH & Co. KG Reprint, in whole or in part, is subject to prior approval. 74650 Künzelsau Printed in Germany. SWG-MCPV-M00184-ZPPD-30-06/20 T +49 7940 15-0 All rights reserved. We reserve the right to make any changes we deem necessary to improve the quality of a product, even F +49 7940 15-1000 Responsible for content: without prior announcement or notification. Illustrations include sample illustrations and may differ in [email protected] Dept. MCPV/Udo Cera appearance from the actual goods delivered. Errors excepted. We do not accept any liability for printing errors. Our general terms and conditions apply. www.wuerth.de SWG Engineering/Henning Ernst SWG Production/Markus Steinhart Edited by: Dept. MW/Ulrich Paulus