• with more than 100+ years experience

PEB

Description:    With 95 + years global experience H.H. Robertson has set up a state-of-the-art pre-engineered steel buildings (PEB) manufacturing facility near Lahore. H.H. Robertson operate with the modern design software and experienced designers. Automatic cutting and semi-automatic submerged-arc welding machines, together with modern drilling and forming equipment used at our manufacturing facilities delivers high quality Pre-Engineered Buildings. Computer controlled manufacturing equipment ensure precise tolerances resulting in high quality and easy job site assembly. Stringent quality control procedures assure superior workmanship. H.H. Robertson offers comprehensive solutions for all your PEB needs.Focused primarily on Pakistani market with local technical resources, H.H. Robertson is always available for prompt customer’s service.

Local currency transaction ensure firm pricing, the need for trying capital for extended L/C or Bank guarantees is eliminated as the concern about exchange rate fluctuations during order confirmation. Furthermore, port clearance procedures, transportation from the port and other hassles etc. are eliminated. H.H. Robertson stocks common building materials and accessories to ensure on time

Manufacturing Facility    H.H. Robertson Pak (Private) Limited, (HHR) with the Manufacturing Facility at 49-Km Lahore, Multan Road, Lahore produces state-of-the-art Pre-Engineered steel buildings. Our CNC based cutting machines & semi- automatic submerged ARC welding system assures international quality.
PEB Element: peb-element
Basic Building Parameters Basic-building-parameter

Framing System
The most common framing systems are shown below. All are shown symmetrical about the ridge line. Unsymmetrical and multispan frame designs can also be manufactured. Practically any frame geometry is possible. Please consult a H.H. Robertson Pak representative for your specific requirements
Primary Framing
Primary Built Up Members
Minimum Yield Strength is 36,000 “PSI”.

.  High grade steel plate conforming to
ASTM A36 / “ASTM A572M.
.  Factory painted with red oxide primer minimum
35 microns (DFT).

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The standard Robertson Floor System framing system consists of a steel deck supported by joists framed onto main mezzanine beams. The main beams may also be supported by intermediate Columns if dictated by design loads. The top flange of the joists fits immediately below the top flange of the primary beams.

Applied floor loads, such as dead, live and collateral loads along with mezzanine column spacing, can affect the economy of a  system. Robertson representative can help you to determine the most economical.

Mezzanine design and column spacing for your project. Unless otherwise specified, the primary mezzanine beams should run across the width of the building parallel to the main frame rafters. Joists should run parallel to the roof purlins along the length of the building.

Multi-level mezzanines, including features such as interior equipment platforms, catwalks, floor openings and staircases are also available. It is important to make the data for these requirements available to our representative at the time of quotation.

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Evaluation Criteria PEB BUILDING CONCRETE BUILDING STEEL ADVANTAGE
Building Dimensions
  • Suitable for spans 20-30m. Can sustain much larger spans
  • Suitable for short span buildings, 5-8m. Becomes difficult and heavy for larger spans
12-50% Cost saving for long span steel building
Fabrication
  • Members fabricated in a controlled environment.
  • Precise fabrication.
  • Fabrication done on site.
  • Requires building the reinforcement cage and shuttering work prior to pouring.
90% saving in fabrication time on site.
Delivery and Logistics
  • Can be delivered anywhere in the world.
  • Can be properly sequenced.
  • Might have to build batch plant on site if site is secluded or huge.
Capital Investment saving.
Erection Time Fast erection. Virtually no idle time
  • Slow erection and time consuming.
  • Pouring should take place in limited amount of time. If exceeded, the concrete quality may be jeopardized.
  • The contractor will have to wait for the previous cast to harden (14-28 days) before being able to cast another batch
50% saving in construction time.
Industrial Applications
  • Can easily handle equipment such as multiple cranes within building.
  • Sways can be controlled.
  • Precision can be achieved during installation.
  • Heavy equipment usage such as cranes is limited.
  • To solve precision problems, contractors use steel I beams and platforms in concrete buildings.
Saving on maintenance cost.
Quality Quality of steel is guaranteed because:
  • It is a homogeneous product.
  • Pieces are tailored according to shop drawings.
  • Precise machinery is used for fabrication.
  • It is fabricated under shop control.
  • Quality is not affected by weather conditions
Many factors lead to quality deterioration:
  • Concrete is not a homogeneous product
  • Concrete mix ingredient ratios are difficult to maintain.
  • Quality of water used may vary.
  • Weather conditions .
  • Labor experience in pouring.
  • Adequate use of vibrators.
  • Using proper curing methods.
  • Concrete shrinkage.
  • High manpower count may weakan control.
Less time is spent to maintain steel quality.
Cost
  • Low man power count needed.
  • Erection cost is low at site
Construction cost is high at site

Modulability & Scalability
  • Can change a section of the building or even cancel a section with controlled effort and with little effect on structure stability and functionality.
  • Expansion is easy. Longitudinally expansion is about adding more bays and connecting the secondary members and the sheeting to the old building.
  • Needs a lot of planning and has usually major consequences. Might be even impossible.
  • To expand, the contractor has to build a new structure with foundations, columns and might have to break part of the old structure in order to expand it.
Lower modification cost.
Error Modification
  • Easy to modify on site, even after erection.
  • Modification can be done by cutting, welding or attaching steel pieces.
  • Have to break concrete if modification is necessary.


Consistency and Reliability
  • Strength is assured from design.
  • Steel properties are stable with time.
  • Strength cannot be guaranteed without testing.
  • Concrete properties may change over time and environmental conditions


Seismic Effect
  • Ductility of steel provides flexible behavior under seismic loads. Light Steel structures minimize the seismic effect on the structure.
  • Steel is heavier than concrete but is 18 times stronger. A steel member can hold 6 times its own weight.
Poor flexibility under seismic loads. Heavy structures maximize the seismic effect on the structure. • Heavy self-weight. Large portion of concrete strength consumed to resist effect of its own weight.

Ductility
  • Show signs of failure when overloaded.
  • Gives chance to fix the problem.
  • No warning signs.
  • May result in disastrous collapse.
  • Steel reinforcement is used to prevent brittle failure.
Steel building requires less costly safety measures.