CAE
80
CAE
pay for the workmanship in themselves, but also for thetrouble of cutting and fitting the jack-rafters.
It is impossible to fix a proper rate, including bothmaterials and workmanship, as the one may be stationary,while the other is variable. With respect to materials, thevalue of any quantity may be easily ascertained, whatever bethe price per load; but the far greater difficulty lies in fixingproper rates of workmanship; however, admitting that thetime of executing every species of work were known, therewould be no difficulty in establishing certain uniform quan-tities, which would give the real value at any time; the fol-lowing is a specimen of the several rates of workmanship, bywhich the prices may be regulated at any time, admittingthem to be right for the present. Each rate consists gene-rally of three places of decimals on the right side of the point,and sometimes an integer on the left side. This table showsalso the customary methods of measuring.
To find the price of the common measure of any hind of•workmanship, at any time .— Multiply the wages of theworkman by the rate; then, whatever denomination thewages is per day, the integers of the product, if any, will beof the same denomination, and the decimals will be parts ofthe same.
Example. —The centering of cylindric vaults is 2.033 persquare; now let the wages per day be 5 shillings, or 60pence; then 2.033 x 5 = 10.165 shillings per square, and bymultiplying the decimal parts by 12, we obtain the pence.Thus—
.165
12
1.980 penny, or very near two pence;so that the value of a square of centering is nearly 10s. 2d.
Again, suppose the wages to be 5s. 6d. per day, then2.033 x 51 = 11.181 shillings, or 11s. 2d. nearly: and thusfor any other example.
TABLE I.
CENTERING.
Fixedper square.
For cylindric plain vaults... 2.033per ft. super.
For groins .057
For gauged brickwork.073
For brick trimmers bridge-
wise....041
For coach-head trimmers... .057per ft. run .
For apertures.02
TABLE II.
MISCELLANIES.
Fixedper ft. run.
Fir-in-bond and wood bricks . 008Fir-in-templets, lintels, and
turning pieces.025
Planing fir from the saw,
per foot super..017
Rebating fir up to 2 inches
byj.025
Rebating from 2 inches by J
to 3 inches by 1J .041
Single beading up to | inch .008
Single quirk beading from
I inch to 1^- .012
Return beads to be paid forat a double rate
TABLE III.
QUARTER PARTITIONS.
Fixedper square.
Common four inch. 1.033
Five inch. 1.113
Six inch.1. 1.307
Six inch circular plan . 1.888
Trussed frame with king-post. 1.743
Trussed, both king and queen
posts . 2.226
TABLE IV.
NAKED FLOORING.
Fixedper square.
Ceiling floor, framed, withtie-beams, binding, and
ceiling-joists .. 1.355
Ceiling floor with tie-beams
and ceiling-joists only ... 1.065
Ceiling-joists only.646
Single framed floor, trimmedto chimney and well-holes,less than 9 inches deep ... 1.355The same, above 9 inches... 1.646The same, if trimmed toparty walls, add extra per
square . .388
Single framed floor, with
one girder . 1.936
Strutting to be paid forextra
Continuation of Table IV.
Fixedper square.
Single framed floor-case and
tail bays. 2.130
For every extra-cased bay
add per square.484
Framed floors, with girders,
binding, and ceiling-joists 3.581
Ground joists bedded.775
Ground-joists bedded and
framed to chimneys.968
Ground-joists pinned downon plates, and framed tochimneys . 1.065
per ft* run .
Girders reversed and bolted .097Truss girder-braces 4 inches
by 4. 194
If any of the above works bedone in oak, add one-third.
TABLE V.
ROOFS.
Common Shed Roofing.
Fixed
per square.
One story high .
Two stories.
. 1.033
Three stories .
. 1.113
Single Span
Roofing.
One story high .
. 1.065
Two stories high.
. 1.113
Three stories high ..
. 1.210
If the above have purlins,
add per square .
194; or
if the purlins be
framed
diagonally, add
double,
or .
... .388
Hips and valleys ..
.08
In common kirb roofing , add
extra per square when one
side is kirbed.
... .194
When three sides ...
... .357
When four sides ...
.516
Girt roofing , with framedprincipals, collar-beams,
and purlins. 2.323
Framed with principals,beams, king-posts, pur-lins, and common rafters 3.484If the principals and raftersare framed flush, and thepurlins housed in, add.387 per square to theabove.
Continuation of Table V.
Fixedper square.
Framed with principals,beams, king-posts, queen-posts, and common raft-ers, three stories. 4.549
The same, four stories . 4.84
per ft. run.
Hips and valleys .145
Hip, and ridge rolls fixed on
iron.048
Bedded plates to common
span roofing .008
Bedded plates to framed
roofing, as above .028
Diagonal and dragon pieces .065
Angular ties and struts.032
Rafter-feet and eaves-board . 032
TABLE VI.
GUTTERING.
per ft. super*
One or lj inch deal, andbearers, including 6-inch
side layer board.057
The same in kirb roofs.078
TABLE VII.
FURRINGS OR BATTENINGS.
per square*
If the stuff be J inch by 1£ .87*
But if the stuff is to be cutout, add . 146 per square.Battenings with quarters, 3
inches by 2.6*
Battening to quarters, 3inches by 2, to window -
piers . 1.8***
If the battens be fixed toplugs, add. 29 per square.
When any of the above arecircular on the plan, addhalf as much more.
TABLE VIII.
BRACKETING, INCLUDINGPLUGGING.
Fixed
v^fi- suf 0 %
To straight cornices . • „$)
To coved straight cornices... •
If circular on the plan, addone half more.
To groins in passages less jgj
than 4 feet wide. jgl
To the same, above 4 feet... •
CAEPENTEY, the art of employing timbers in the e° Dstruction of buildings.
The important and useful art to which the general nof carpentry is given, is so intimately connected w * tcomforts and requirements of man, in every stage of clV ' {0society, that no apology can be necessary for the leng „which our observations on it must necessarily extend. ,work especially devoted to architecture, it of course ^occupy a prominent place; for carpentry may be con3 'of so great importance, that no man may pretend to ^architect who is not well acquainted with its principle® jits practice. Carpentry may be divided into two b ^branches— Carpentry and Joinery. The first include^.^
larger and rougher kinds of work, or that which is ess qy,to the construction and stability of an edifice : and, geneall the work wherein timber is valued by the cubica