; ' 
te— ss — 1 — 
ifci i i 1 

littt 
1 : i 
i 
oo: 
MH 
! ' ; 
1 !„ 1 .. 1 i . I i : , ; . i . 1 1 
1 ,,l 
iiii.tii 
lilll.lilillllllii H 1,1 „ 
TrrVV^r 
JLil ^LiuiiL. .,,,,, ii ,,,!,,,! ,: 
J. .Ill 1 
™Lii. ,!. 1, I. HI 1 hi.., II. ! !..!, . i 
- i " 
1 I! 1 
-•■' 
- 
MAY26'l4j t MAY 77.1914 
-„4^ U JUNE 3 19,4 J 1 JUNE 5 
I JUNE 5 I9I4 | JUNE 6 ,4 I 
O o; 
95 F | 97 f | oo r, | // r. | | ci r. . | 75 „ F | 
_t 79T. ' ■ «•« 1 
£ 
1 : . 
! i II | j 
:JL 
--■0 
ii i> ! in! ii ii|||||!ii|i|ii|i|<iin'r | 
H 1 "i 1 
MHp 
n- 
!: i 1 1 APRIL 14,1914 | APRIL 
4«"14| 
jili | eo-F '| 52' 
r | 77- r. 1 
K Z 
:.:);! i! 1, J ; 
2 '" a 
llWfil 
ll i i 
.-■ 
ill II 11111 lili .! .1 , II.,,, Ill .. 1. . U.„,.!.,IJlln„ ,. 1 III ! ..l! rtl . i i ! ! 
■rpri ' 
l|l |j| 
1' | IFIIIil' || ■];!>■ |l|l |'l 
IH|' '||i IH'I " llll I'" I 
-,._ 
I'M 1 i ' 1 
JULY,., ID 1 
AUGUST 19 
.?■? 
| 3EPT3,I3| 1 JUNE 17,1913 [ JUNE 18 , ,9,3 |jUNEI9| 
I OCT 27. 13 1 APRIL 21 ,1914 1 
95°F. 8 -» T. |" S4°F |J .90T 1 '\ SS°F |BO»F.| 
TOT. 61° F. 
1 
... 
! 1 '• 
- 
till ' 
- 
hfl 
: ; i 
! i| i , , , ! : , i , i 
...Li 1. Nihil .., 
ri 
|l |>|l' |l|!|| 'q||»|'l' 
■U||'l' 1 
... p, ,|, 
i'i|i pH «!' 'ipr y iTH' i iffl '"I' i| i i"if iv" 
'•"-'■ 
1 
004 
FEB. 5 . 1913 | FEBRUARY 6,1913 | FEB,I.I9I3| FEB 8,19,3 | FEB ,0,19,3 
1 JULY, ,9,3 | 
34-F t 2G°F '1 j' 38-F «|« „. f . 'I' 32«F >| | .OOT | 
LAYOUT OF EXPERIMENTAL SECTIONS 
I NOV IS '12 I NOV. 18 I I NOV 22 I NOV. 2S I NOV. 26,1912 I NOV 27 I DEC. 7. 19,2 I 
I «■* I - 7 °H I "' r - 1 « 7 ° r I 46 ° r I »■« I *+' F - I I 
ijii 
P 10-20 30 
I PLAIN CEMENT 
JGRAVCL AGGREGATE 
^N0V2^-r 
PLAIN CEMENT 
I PLAIN CEMENT] 
|gRAV£L AGS. | 
ISO 190 200 
OIL CEMENT 
GRAVEL AGG. 
j_»j |*-APRIL23'l3-^-APRIL22"| 
320 330 
CEMENT | OIL CEME1* 
AOG. 
10 310 320 330 340 3SQ Jfco 
| OIL CEMENT OIL CEMENT 
LIMESTONE AGG. | TRAP AGG. | 
Fig. 13. — Expansion and co 
80045°— 17— Bull. 532. (To race page 1G.) 
of concrete road, Connecticut Ave. extended, Chevy Chase, Md. Laid in 1912 and 1013 
