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544 Barry’s Advanced Construction of Buildings Transfer own weight and any fixtures mounted on the wall The ability of a partition wall to accept fixtures and fittings is often overlooked. Overloading a wall with shelves or other fittings may cause the wall itself to break or topple over, or the load of the fittings may simply pull the fittings out of the wall fabric. The wall materials must be capable of restraining the loads applied. Studs and other reinforcing materials may need to be positioned so that the wall can accommodate the load. The head of the wall will also need to be restrained if loads are anything other than minimal. Transfer building loads (loadbearing) While it is common to have large, flexible open spaces divided by non-loadbearing, potentially demountable walls, it is often economical to have intermediate loadbearing supports, such as internal walls. The walls can be loadbearing, carrying loads from floors, beams and components above the wall down to the building’s foundations. By using intermediate loadbearing walls, the floor beams do not need to span as far, and the section and depth of each beam can be reduced. Smaller, shallower beams are less expensive per unit length than long, deep section beams. Allow the passage of light Light may be allowed to pass with or without vision through the material (usually glass). Windows and vision panels are easily introduced into stud and masonry walls. It is important that the windows are carefully selected and fitted so that they comply with the other performance criteria of the wall, e.g. fire resistance and acoustic properties. Allow cross ventilation Mechanical and natural ventilation ducts may be installed through the wall. If the wall is a compartment wall, these service ducts will need to be fitted with a fire stop that is capable of sealing the duct in the event of a fire. Demountability of partition walls To accommodate changes of use, large spaces are often divided using demountable partitions. In such situations the ease with which a wall can be dismantled, reassembled and repositioned is of considerable importance. Any non-loadbearing wall is demountable, but it may not be possible to re-erect the structure using the same components. Some patent partition walls have been designed so that they can be easily repositioned, e.g. folding concertina doors, sliding doors or walls, without the need for tools. Others are bolted, clipped or fixed into place but can be relatively easily repositioned with minimum disruption. Continuity of floor, wall and ceiling finishes may sometimes be compromised when partition walls are repositioned or removed. Partition wall assembly Partition walls are manufactured to a modular size. Systems are usually based on a lightweight steel stud system. Alternatively timber studs may be used (Figure 10.6). Using multiple layers of acoustic or gypsum fire-resisting plasterboard and filling the studs with mineral wall, the fire-resisting and sound-reducing properties of the wall can be significantly increased. Often selected purely on economic grounds, different arrangements of brick, timber, concrete, steel and patent systems can be selected to provide the required finish, flexibility, acoustics and fire-resisting properties, as illustrated in Figure 10.7.
Fit Out and Second Fix 545 Multiple layers of acoustic board can be used to increase sound reduction. Services should not penetrate acoustic board Floor boarding Ceiling joist Head plate (or rail) 74 x 50 Timber studs Noggins at 1 m centres Stud wedged to wall Folding wedges between stud and wall Mineral wool improves sound reduction and increases fire resistance. All perimeter joints should be sealed Figure 10.6 Timber stud partition wall. Sole plate 75 x 50 Extra noggins may be used to support and house first fix services Opening for door frame
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BARRY’S ADVANCED CONSTRUCTION OF
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This edition first published 2014 T
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vi Contents 6 Structural Concrete F
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Acknowledgements Over the years our
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1 Introduction In Barry’s Introdu
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Introduction 3 Photograph 1.1 Frame
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Introduction 5 (2) Positional toler
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Introduction 7 some of the factors
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Introduction 9 Photograph 1.2 Artif
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Introduction 11 on legislation, oth
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Introduction 13 allow for innovatio
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2 Scaffolding, Façade Retention an
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Scaffolding, Façade Retention and
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3 Ground Stability, Foundations and
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Ground Stability, Foundations and S
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Where the ground is susceptible to
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Heavy pad reinforcement Reinforceme
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Photograph 3.3 Driven precast concr
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(a) (b) Photograph 3.6 (a) A drop a
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Working direction Hopper and cellul
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Infill concrete packing applies pre
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Reinforced structural concrete base
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4 Single-Storey Frames, Shells and
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Single-Storey Frames, Shells and Li
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Portal rafter Plate welded to rafte
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Zed purlins Washer plate bolted to
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Sheeting rails for cladding Steel r
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Photograph 4.12 Lattice column to b
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Side lap of sheeting Sheeting screw
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Outline of straight line limited hy
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5 Structural Steel Frames Structura
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Structural Steel Frames 275 penetra
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Structural Steel Frames 277 calcula
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Structural Steel Frames 279 The lim
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Structural Steel Frames 281 420.5-
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Structural Steel Frames 283 no stro
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Structural Steel Frames 285 Channel
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One-way span floor and roof slabs R
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Structural Steel Frames 289 A disad
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Structural Steel Frames 291 Rib bea
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Structural Steel Frames 293 Timber
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Structural Steel Frames 295 Horizon
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Structural Steel Frames 297 Concret
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Beam End plate welded to beam Colum
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Structural Steel Frames 301 Cap pla
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Structural Steel Frames 303 Bearing
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Structural Steel Frames 305 Bolt fa
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Structural Steel Frames 307 Electro
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Structural Steel Frames 309 Types o
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Structural Steel Frames 311 Weld fa
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Structural Steel Frames 313 beam en
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Structural Steel Frames 315 Column
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A timber profile is cut to the same
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Structural Steel Frames 319 Square
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Structural Steel Frames 321 for a s
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Structural Steel Frames 323 Photogr
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Structural Steel Frames 327 Column
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Structural Steel Frames 329 Strengt
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Structural Steel Frames 331 Figure
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Structural Steel Frames 333 Floor b
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Structural Steel Frames 335 50 or 7
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Structural Steel Frames 339 rating,
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Structural Steel Frames 341 The adv
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Structural Steel Frames 343 Shear s
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Structural Concrete Frames 345 ❏
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Structural Concrete Frames 347 Work
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Structural Concrete Frames 349 6.2
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Structural Concrete Frames 351 is o
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Structural Concrete Frames 353 plac
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Structural Concrete Frames 355 Comp
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Structural Concrete Frames 357 Beam
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Structural Concrete Frames 359 cant
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Structural Concrete Frames 361 Clos
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Structural Concrete Frames 363 Rein
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Structural Concrete Frames 365 Stee
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Structural Concrete Frames 367 Sold
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Structural Concrete Frames 369 Hand
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Structural Concrete Frames 371 Conc
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Structural Concrete Frames 373 Edge
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Figure 6.23 Prop and deck floor pos
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Structural Concrete Frames 377 Main
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Structural Concrete Frames 379 Edge
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Handrail protects workers when pour
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Structural Concrete Frames 383 calc
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Structural Concrete Frames 385 Wire
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Structural Concrete Frames 387 Thru
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Structural Concrete Frames 389 ❏
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Structural Concrete Frames 391 Expo
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Structural Concrete Frames 393 Balc
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Structural Concrete Frames 395 In s
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Structural Concrete Frames 401 comp
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Structural Concrete Frames 403 Stee
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Structural Concrete Frames 405 The
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Structural Concrete Frames 407 Wrap
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Structural Concrete Frames 409 alte
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7 Cladding and Curtain Wall Constru
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Cladding and Curtain Wall Construct
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Stainless steel restraint cramps fi
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15 mm Cladding and Curtain Wall Con
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Roof support Roof or eaves level La
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Prefabrication and Off-Site Product
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Prefabrication and Off-Site Product
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Page 535 and 536: Lifts and Escalators 523 FFL Lift c
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Page 543 and 544: Fit Out and Second Fix 531 cabinets
Page 545 and 546: Fit Out and Second Fix 533 ❏ ❏
Page 547 and 548: Fit Out and Second Fix 535 Four-way
Page 549 and 550: Fit Out and Second Fix 537 Services
Page 551 and 552: Fit Out and Second Fix 539 Wire han
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Page 555: Fit Out and Second Fix 543 Metal st
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Page 561 and 562: Building Obsolescence and Revitalis
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Page 577 and 578: Index Access from heights, 42 Acces
Page 579 and 580: Index 567 Innovation, 505 Inspectio
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