Variables of Contract Price Escalation Factors (K) 
(1987=100)


For 1998

Variable

 JAN. 

 FEB. 

 MAR. 

APR.

 MAY. 

 JUN. 

  JUL. 

 AUG. 

 SEP. 

 OCT. 

 NOV. 

 DEC. 

M

= CONSTRUCTION MATERIALS
   (EXCLUDE CEMENT & STEEL)

183.0

187.4

188.3

189.1

189.4

189.0

191.8

190.9

191.0

190.6

 190.4

188.7 

S

= STEEL PRICE INDEX

146.2

170.9

170.7

165.0

159.1

154.3

152.1

144.0

142.2

139.0

134.8

126.4

C

= CEMENT PRICE INDEX

138.0

141.5

144.1

145.1

145.1

149.6

152.3

156.4

156.4

163.7

163.7

162.2

G

= IRON SHEET PRICE INDEX

192.4

214.8

214.8

210.4

204.4

194.7

193.5

189.3

175.0

167.6

 164.2

157.8

I

= GENERAL CONSUMER PRICE INDEX OF 
   THAILAND

172.0

173.2

175.2

176.4

177.4

178.4

178.5

179.2

178.9

178.6

 178.1

 177.4

F

= HIGH SPEED DIESEL PRICE INDEX

180.3

174.8

160.2

152.5

153.1

136.8

138.7

134.9

129.1

131.1

121.9

110.9

A

= ASPHALT PRICE INDEX

100.8

96.2

91.7

91.7

91.7

91.7

87.4

87.4

85.2

85.2

85.2

85.2

E

= MACHINERY AND EQUIPMENT PRICE INDEX

144.8

144.8

153.1

153.1

152.4

154.2

157.5

157.3

158.0

158.0

157.5

157.1

GIP

= GALVANIZED IRON PIPE PRICE INDEX

207.5

236.4

236.4

236.4

236.4

236.4

236.4

236.4

236.4

228.8

228.8

228.8

AC

= ASBESTOS PIPE PRICE INDEX

120.3

120.3

120.3

120.3

120.3

120.3

120.3

120.3

120.3

120.3

 120.3

120.3

PVC

= PVC WATER PIPE PRICE INDEX

125.9

125.9

125.9

125.9

125.9

125.9

125.9

125.9

125.9

125.9

125.9

125.9

W

= INSULATED WIRE PRICE INDEX

133.2

149.9

149.9

149.9

149.9

149.9

149.9

149.9

149.9

149.9

149.9

149.9

PE

= HYDENSITY POLYETHYLENE PIPE PRICE INDEX  
   (HYDENSITY POLYETHYLENE)

142.0

142.0

142.0

142.0

142.0

142.0

142.0

142.0

142.0

142.0

 142.0

 142.0


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