October 2013
Intermediate to advanced
306 pages
12h 17m
English
Content preview from Estimating for Heating and Ventilating, 3rd Edition
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148 ESTIMATING LABOUR REQUIRED FOR ERECTION
Section 27
SHEET STEEL DUCTS
(Weights as Standard Specification, Clause 21, Section B)
Off load at site, and move ducts and brackets to fixing positions on ground floor of
new building. Arrange scaffolding or other fixing platform. Mark out duct runs and
bracket fixings. Fix hangers and brackets. Trim ductwork, joint and erect straight
runs at a maximum height of
6
m from floor. Mark out for, trim and fix branches and
bends. Remove scaffolding and clean up.
A. Straight runs per metre. B. Fit bend, branch, damper, or connecting piece.
Duct size, Metric Duct size, Imperial
Hours, fitter and mate
Rectangular ...
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