Estimating in Building Construction

(Barré) #1

144 CHAPTERTWELVE


The estimator should make notes on the types of mate-
rials required, catalog numbers (if available), and quantities
required and call a supplier that can provide them. Installa-
tion may be with the general contractor’s work crews, or a
subcontractor may be used.


Expansion Control Covers. Expansion control covers
include the manufactured, cast or extruded metal expansion
joint frames and covers, slide bearings, anchors, and related
accessories. These materials are taken off by the linear foot,
with the materials and any special requirements noted.
Many times they are installed by a subcontractor doing
related work. For example, an expansion joint cover being
used on an exterior block wall might be installed by the
masonry subcontractor (if one is used). In other cases, the
general contractor may assume the responsibility. The key is
to be certain that both material and installation are included
in the estimate somewhere.


12–9 Metal Checklist


Shapes:
sections
weights
locations

fasteners
Engineering:
fabrication

shop drawings
shop painting
testing
inspection
unloading, loading
erection
plumbing up
Installation:
riveting
welding
bracing (cross and wind)
erection
bolts

Miscellaneous:
clips
ties
rods
lengths
quantities
painting

hangers
plates
anchor bolts

Fabrications:
metal stairs
ladders
handrails and railings
(pipe and tube)
gratings and floor plates
castings

Ornamental:
stairs
prefab spiral stairs
handrails and railings
metal castings
sheet metal

Expansion control:
expansion joint cover
assemblies
slide bearings

Web Resources


http://www.sdi.org


http://www.daleincor.com


http://www.asce.org


http://www.mca1.org


http://www.steeltubeinstitute.org


http://www.steeljoist.com


http://www.vulcraft-in.com


Review Questions



  1. What two materials are most commonly used for struc-
    tural framing metals, and how are they priced?
    2. Under what conditions might it be desirable for the
    contractor to use a structural subcontractor to erect the
    structural metal frame of the project?
    3. Why should the estimator list each of the different
    shapes (such as columns and steel joists) separately?
    4. What is the unit of measure for metal decks? What type
    of information needs to be noted?
    5. How are fabricated metal and ornamental metal usually
    priced?
    6. Estimate the metal decking requirements for the build-
    ing in Appendix C.
    7. Using the drawings for Billy’s Convenience Store
    (Appendix F), prepare an estimate for the structural
    steel found in the roof structure.

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