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326 Barry’s Advanced Construction of Buildings Universal column Steel angles screwed to structural floor Structural floor 6 mm cover strips screwed to back of boards to seal butt joints Beam Board casing fixed around column and secured with screws Cover strips screwed to back of boards to seal butt joints between boards Medium-density board casing Board casing fits around beam and is secured with screws Figure 5.49 Board casing. Preformed casings These casings are made in preformed ‘L’ or ‘U’ shapes ready for fixing around the range of standard column or beam sections, respectively. The boards are made of vermiculite and gypsum, or with a sheet steel finish on a fire-resisting lining, as illustrated in Figure 5.50. The vermiculite and gypsum boards are screwed to steel straps fixed around the steel sections and the sheet metal-faced casings by interlocking joints and screws. These preformed casings provide a neat, ready finished surface with good resistance to knocks and abrasions in the case of the metal-faced casings. Plaster and lath Plaster on metal lath casing is one of the traditional methods of fire protection for structural steelwork. Expanded metal lath is stretched and fixed to stainless steel straps fixed around steel sections with metal angle beads at arrises, as illustrated in Figure 5.51. The lath is covered with vermiculite gypsum plaster to provide an insulating fire-protective casing that is trowelled smooth, ready for decoration. This rigid, robust casing can suffer abrasion and knocks and is particularly suitable for use where a similar finish is used for ceilings and walls. Concrete, brick or block casing An in situ cast concrete casing provides fire protection to structural steelwork and protection against corrosion. This solid casing is highly resistant to damage by knocks. To prevent the concrete spalling away from the steelwork during fires, it is lightly reinforced, as illustrated
Structural Steel Frames 327 Column Concrete floor Steel stirrups strapped around beam Steel stirrups strapped around column Beam Precast ‘U’-section vermiculite gypsum casing, reinforced with galvanised wire mesh, is fixed to stirrups with self-tapping screws Figure 5.50 Preformed casings. Column 6 mm diameter steel rods wired to straps as spacers Stainless steel straps around column at 350 mm centres Expanded metal lath fixed to straps Concrete floor Beam Stainless steel straps around beam at 350 mm centres Expanded metal lath Angle bead 6 mm steel rods as spacers Vermiculite gypsum plaster Angle bead Vermiculite gypsum plaster Figure 5.51 Metal lath and plaster casing.
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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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Page 299 and 300: One-way span floor and roof slabs R
Page 301 and 302: Structural Steel Frames 289 A disad
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Page 305 and 306: Structural Steel Frames 293 Timber
Page 307 and 308: Structural Steel Frames 295 Horizon
Page 309 and 310: Structural Steel Frames 297 Concret
Page 311 and 312: Beam End plate welded to beam Colum
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Page 315 and 316: Structural Steel Frames 303 Bearing
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Page 353 and 354: Structural Steel Frames 341 The adv
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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 397 Conc
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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 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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The finished hospital looks no diff
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Lifts and Escalators 515 ❏ ❏
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Lifts and Escalators 517 will be bu
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Lifts and Escalators 519 hydraulic
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Lifts and Escalators 521 ❏ ❏
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Lifts and Escalators 523 FFL Lift c
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Lifts and Escalators 525 Climbing f
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Lifts and Escalators 527 Above 30 m
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Lifts and Escalators 529 Photograph
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Fit Out and Second Fix 531 cabinets
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Fit Out and Second Fix 533 ❏ ❏
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Fit Out and Second Fix 535 Four-way
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Fit Out and Second Fix 537 Services
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Fit Out and Second Fix 539 Wire han
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Fit Out and Second Fix 541 tiles ar
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Fit Out and Second Fix 543 Metal st
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Fit Out and Second Fix 545 Multiple
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11 Building Obsolescence and Revita
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Building Obsolescence and Revitalis
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Appendix B: Additional References C
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Index Access from heights, 42 Acces
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Index 567 Innovation, 505 Inspectio
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Index 569 Suspended frameless glazi
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