Imatges de pÓgina
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Bids for Treasury extension.

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$31, 735
20,944
14,554
12,600
12,000
4,000
2,520
37,800
4, 120

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737

$51, 900
35, 700
26,810
6,860
6,250
4,000
1,960
25, 200
2,060

590
13,825
3, 200
4,800
94, 025
15,825
16,714
15, 215
13,055

829, 410
26,656
19, 150
16, 114
12, 100
7, 250
4, 494
63,518
4, 120

883
17,972
3, 800
6, 200
97,290
16, 200
69,641
12, 679
15, 293

825,085
15, 232
7,660
6,020
3,000

800
1,820
25,000
3,090

516
13, 825

5,000
23, 600
509, 736
88, 700
27,856
13,947
14,920

840,568
21, 896
12, 069
13,300
17,750
6,350
3,640
51, 408
3,214

814
16,590
4, 200
9,600
179, 344
30, 650
71,631
13,947
13,055

$28,615
17,136

9,958
14,518
9,000
7,500
4, 550
33,600
5,088
1,032
13,000
3,000

000
92,000
13,000
79,590
17,117
12,309

$28,545
20, 468
15, 320
11, 200
8,500
4,900
4,130
3,500
3, 605
1,033
12, 443
3,000

9,000
176, 078
30, 275
35,816
19,013
14,000

12, 166
2,680
4, 460
71,933
12,031
31,836
11,410
14, 119

2,800
35, 641
3, 708

590
16,590

3,300
5, 100
75, 416
12, 425
35, 815
17,751
13, 196

785
13,548
3, 460

6, 460
156, 164
19, 425
3,000
13,947

501
13,272
4,320
19,920
426, 159

74,075
25, 867
15, 849
13,055

18,650

11,000

303,645

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Beals & Dixon.

Cornice.

865 cubic feet.
Architraves

476 cubic feet.
Architraves.

766 cubic feet Column caps.......

14....... Ante.............

50.. ....... Antæ bases......

50.......... Column bases.......

14.
Column shafts

14.
Steps..

2,060 cubic feet.
Platforms..

590 sup. feet.
30 cubic feet stock.....27,650.
60 cubic feet stock..... 4,000.

20 cubic feet stock.....
412 cubic feet stock. .21, 765.
613 cubic feet stock. 2,500.
21 hammering. .39, 795.

63,392.
Balustrades.

377.

2,000,

Beds ...

Curved work.

30,000

No bid.

No bid.

50,000

No bid.

No bid.

No bid.

37,500

No bid.

333,615

6, 227, 845

321,685

337,984

378, 756

395,379

422, 722

785,807

529,576

666,211

339, 847

401,713

332, 831

These variations in the quantities of material are accounted for as follows:

CORNICE.

There having been no change in the plan of the building, as authorized by Congress, the reason of the excess of this item above the synopsis is owning to an error in the computation of measurement in the synopsis of 1855.

ARCHITRAVES OVER COLUMNS AND ANTE.

The increase in length in these items is owing to the fact that no plans for the three portico ceilings existed at the time the schedule of 1855 was made, it not having been determined whether they were to be of iron or granite; and an error in estimate of length of some 400 feet.

COLUMNS, BASES, AND CAPITALS OF COLUMNS. The number of columns, with their caps and bases, was reduced by the change of plan in the south portico, authorized by the Secretary.

PLAIN STEPS AND PLATFORMS.

These are reduced by a proposed change of plan for steps, o which the estimate of amount required to complete the south wing is based.

ROUGH STOCK NOT EXCEEDING THIRTY CUBIC FEET.

This item does not contain the stock used in the interior of the building—such as steps, well-hole, plates in stairways and inside architraves, which were not included in the quantities furnished by the synopsis of 1855, but the increase is caused by using backers. fillers, and bonds in basement, and larger stones in the upper stories.

ROUGH STOCK NOT EXCEEDING THREE HUNDRED AND THIRTY CUBIC FEET.

The large increase in this item was caused by increasing the thickness of antæ from “two feet six inches'' to two feet ten inches, by introducing the scotia and moulding on the shaft, and by twelvecorner antæ, which are much larger than those on which the synopsis of 1855 was made.

HAMMERING NUMBER ONE. This item now contains the quantities furnished by the synopsis of 1855, under the head of hammering No. 1, No. 2, and No. 3. The quantities of hammering in that synopsis were calculated from the small plan furnished by Mr. Walter, the architect. drawn on a scale of thirty feet to one inch.

BEDS. The decrease in this item is owing to the decrease of beds and builds, caused by substituting single stones in place of ashlar around the doors and windows, as supposed in making the synopsis of 1855.

BALUSTRADE.

The length of balustrade, as given in the synopsis of 1855, in cluded the blocking courses on the rear front, which have no need of a balustrade.

N. B.-It will be seen from the foregoing statements that if the schedule or synopsis of bids for granite had been made from the actual quantities instead of the estimated or relative quantity, the result would not have been altered in making Beals & Dixon the lowest bidders.

ALTERATIONS AND CHANGES OF PLANS.

1. In style of cutting: Cornice ..

Estimated in schedule of 1855.
Architrave....
Capitals of antæ..... As hammering No. 3.
Capitals of columns... Estimated as No. 2.

These items have all been cut with hammering No. 1, and the capitals of antæ enlarged and ordered with elaborately carved necks.

These changes have caused an increase of cost as follows : Change of hammering from Nos. 2 and 3 to No. 1...... $2,359 Capitals of antæ

25,449 Bases ... Increase in large-sized saddle stones from bevelled course

on raking pediment cornice, from carved dentals, carved groins of middle course with extra sinkages to admit top groins, and from peculiar cuttings of 380 feet longitudinal of top course...

7,169

2,138

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2. Alterations in size of stone: Antoe.—The forty-nine antæ estimated in schedule of 1855 were in three stones, but a plan was submitted to your predecessor, in October, 1856, proposing to make the shafts of anta in one piece, with scotia moulding, with a statement of cost, and by him approved. The antæ were estimated in the synopsis of 1855 as follows: 16,000 cubic feet, of 330 feet average

$43, 040 9,400 cubic feet, of hammering Nos. 1, 2, and 3

5,610

48,650

Total cost as originally estimated..
The change authorized by your predecessor from No. 3 to

No. 1 stone, increased depth of stone, finer cutting, &c.,

cost as follows : 21,765 cubic feet of 412 cubic feet sione average,

being increase of 3,650 cubic feet, at increased price..

$28,893 Change of hammering 9,400 superficial feet from Nos. 1, 2, and 3, to No. 1

1,910 Work on scotia moulding, &c....

42, 342

73, 145

Total cost of change ..
Errorin original estimate in not estimating rightly

for amount necessarily involved in this work,
viz: for hammering 9,400 superficial feet, 5, 722
feet beds ...

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Total cost of antæ ...

130, 345

Base and belt course of basement story window and door sills, posts,

lintels, moulded blocking courses forming the panels between the anta in first, second, and third stories, and sunk work and rebates in rear front:

In the plans submitted by the architect (Mr. Walter) all these stones were represented as plain ashlar, and were estimated accordingly in the synopsis of 1855, and as being hammered—No. 1, in basement and entrance stories; No. 2, in second story; No. 3, in third story. These alterations were submitted to your predecessor in 1855 and 1856, and by him approved, when the substitution of highly-finished moulded stone for plain ashlar was adopted.

The whole exterior of the building was originally estimated as follows: 17,192 superficial feet, No. 1

$13, 753 10,174 superficial feet, No. 2.

6,104 10,791 superficial feet, No. 3

5,179

$25,036 Of this in face work of antæ

5,610

Total amount of exterior work in basement and between

antæ, hammered. Beds as in table

19,426 13, 210

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