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170 Barry’s Advanced Construction of Buildings a height of around 1500 mm as protection against accidental impact damage, with wall sheeting above. North light steel lattice truss construction The north light roof has an asymmetrical profile with the south-facing slope pitched at 17° or more to the horizontal and the north-facing slope at around 60°, as illustrated in Figure 4.7 and Figure 4.8. To limit the volume of unusable roof space (that has to be heated) most north light roofs are limited to spans of up to about 10 m. Multi-bay lattice steel roof truss construction To cover large areas, it is common practice to use two or more bays of symmetrical pitch roofs to both limit the volume of roof space and the length of the members of the trusses. Lattice steel north light roof truss Purlins fixed across trusses support roof covering Purlins fixed across north slope support roof glazing Up to 12.0 Sheeting rails Column 3.0 to 5.0 Figure 4.7 Single-bay north light lattice steel roof trusses on steel columns. Corrugated sheeting to roof Glazed north slope of roof Corrugated sheeting to side and end walls Figure 4.8 Single-bay lattice steel north light roof on columns with corrugated sheeting.
Single-Storey Frames, Shells and Lightweight Coverings 171 Purlins fixed across trusses to support roof covering Lattice steel roof truss Valley beam supports trusses between internal columns Up to 12.0 Columns 3.0 to 5.0 Figure 4.9 Two-bay symmetrical pitch lattice steel roof and columns with valley beam. Closely spaced internal columns Clear headroom Valley beam with widely spaced internal columns Figure 4.10 Increased volume of unused roof space with widely spaced internal columns. To avoid the use of closely spaced internal columns (which may obstruct the working floor area) to support roof trusses, a valley beam is used. The valley beam supports the roof trusses between the internal columns, as illustrated in Figure 4.9. The greater the clear span between internal columns, the greater the depth of the valley beam and the greater the volume of unused roof space, as illustrated in Figure 4.10. Cantilever (umbrella) multi-bay lattice steel truss roof Figure 4.11 shows a cantilever (or umbrella) roof with lattice steel girders constructed inside the depth of each bay of trusses at mid-span. The lattice girder supports half of each truss with each half cantilevered each side of the truss. Lattice steel truss construction Lattice steel trusses are often fabricated from one standard steel angle section with two angles positioned back to back for the rafters and main tie, and a similar angle for the internal struts and ties, as illustrated in Figure 4.12. The usual method of joining the members of a steel truss is with steel gusset plates, which are cut to shape to contain the required number of bolts at each connection. The flat gusset plates are fixed between the two angle
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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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Single-Storey Frames, Shells and Li
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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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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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