盛岡市給水装置工事施行要領

令和６年５月１日以降適用

盛岡市上下水道局

盛岡市給水装置工事施行要領
令和６年５月１日上下水道事業管理者決裁

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１・１ 目的 ···································································· １
１・２ 用語の定義 ······························································ １
１・３ 給水装置の種類 ·························································· ２
別図第１ 給水装置の概要図 ············································ ３
１・４ 給水装置工事の種類 ······················································ ４
１・５ 給水装置工事の施行 ······················································ ４
１・６ 加入金・手数料 ·························································· ５２給水装置の設計 ································································ ７

２・１ 事前調査等 ······························································ ７
２・１・１ 事前調査等 ························································ ７
別表第１ 標準事前調査項目と内容 ································ ８
２・１・２ 給水装置図面写しの交付申請 ········································ ９
２・２ 給水方式と給水管の口径の決定 ············································ 10
２・２・１ 給水方式 ·························································· 10
２・２・２ 同時使用水量 ······················································ 11
別表第２ 給水用具の種類別吐水量 ································ 13
別表第３ 同時使用を考慮した標準給水用具数 ······················ 13
別表第４ 総給水用具数と標準同時使用水量比 ······················ 13
別表第５ 器具給水負荷単位 ······································ 14
別図第２ 給水用具給水負荷単位による同時使用水量図 ·············· 15
２・２・３ 計画一日使用水量 ·················································· 16
別表第６ 建物用途別標準単位給水量・使用時間・人員 ·············· 17
２・２・４ 設計水圧 ·························································· 18
２・２・５ 給水管内の流速 ···················································· 18
２・２・６ メーターの性能とメーター口径の選定 ································ 18

別表第７ メーター口径別許容流量 ································ 19
２・２・７ 給水管の口径の決定 ················································ 20
別図第３ 動水勾配線図 ·········································· 21
別図第４ 口径の決定手順 ········································ 22
別表第８ 給水用具の種類別直管換算延長 ·························· 23
別図第５ ウエストン公式による流量図 ···························· 24
別図第６ ヘーゼン・ウィリアムズ公式による流量図 ················ 25
別表第９ 動水勾配早見表 ········································ 26
２・３ 給水装置の構造及び材質 ·················································· 29
２・３・１ 給水装置の構造及び材質の基準 ······································ 29
別表第10 給水管及び給水用具の性能基準 ·························· 31
２・４ 給水装置の設計基準 ······················································ 32
２・４・１ 配水管等への取付口からメーターまでの給水管及び給水用具 ············ 32
別図第７ 耐震継手を使用した既設配水管から分岐する場合の施工方法 33
別図第８ サドル付分水栓、非耐震継手を使用した配水管から不断水分
岐する場合の施工方法 ·································· 35
別表第11 給水装置工事の指定材料一覧表 ·························· 36
２・４・２ 給水管の占用位置 ·················································· 43
２・４・３ 給水管の埋設深さ ·················································· 43
２・４・４ 給水管の埋設工法 ·················································· 44
別図第９ 標準掘削断面図 ········································ 45
２・４・５ 給水管等の分岐 ···················································· 46
別表第12 標準管径均等表 ········································ 48
別表第13 分岐方法一覧表 ········································ 49
別図第10 分岐部分の標準配管図 ·································· 50
別図第11 配水管等への取付口からメーターまでの標準配管図 ········ 51
別図第12 既設給水管の途中で接続する場合の配管例 ················ 57
別表第14 ポリエチレン管の口径別防護管口径目安表 ················ 58
２・４・６ 構造物等に近接又は交差する場合の配管 ······························ 59
別図第13 構造物等に近接又は交差する場合の標準配管図 ············ 60
２・４・７ 給水管の布設替えと切替え ·········································· 63
別図第14 既設給水管の標準切替図 ································ 64
２・４・８ 仕切弁及び止水栓の設置 ············································ 65
別図第15 道路内に仕切弁又は止水栓を設置する場合の標準図 ········ 66

別図第16 宅地盤が盛土等で高い場合の止水栓の設置例 ·············· 67
２・４・９ メーターの設置 ···················································· 68
別図第17 メーターボックスの仕様 ································ 69
別図第18 メーター前後の標準配管図 ······························ 73
別表第15 メーター仕様表 ········································ 75
別図第19 メーターの標準配置図 ·································· 76
別図第20 電子メーターの設置標準図 ······························ 77
２・４・10 メーター直結止水栓及び逆止弁の設置 ································ 78
２・４・11 自己メーターの設置 ················································ 78
２・４・12 私設消火栓の設置 ·················································· 79
別図第21 地上式消火栓の標準図 ·································· 80
別図第22 地下式消火栓弁室構造図 ································ 81
２・４・13 空気弁の設置 ······················································ 82
別図第23 空気弁室構造図 ········································ 82
２・４・14 排水弁の設置 ······················································ 83
別表第16 末端口径別の排水弁選定表 ······························ 83
別図第24 排水弁室構造図 ········································ 84
２・４・15 メーター下流側の配管 ·············································· 85
別図第25 分岐箇所の配管例 ······································ 87
別図第26 メーター下流側の標準配管図 ···························· 88
別表第17 ポリエチレン管の曲げ配管 ······························ 89
別表第18 架橋ポリエチレン管及びポリブテン管の曲げ半径 ·········· 89
２・４・16 水抜き用の給水用具の設置 ·········································· 90
別図第27 水抜き栓の排水口周りの標準図 ·························· 91
別図第28 外部排水式不凍給水栓の排水口周りの標準図 ·············· 91
２・４・17 受水槽への給水と受水槽の構造等 ···································· 92
別表第19 受水槽式集合住宅の認定制度の概要 ······················ 93
別表第20 吐水口空間 ············································ 95
別図第29 水槽等の吐水口空間 ···································· 96
別図第30 オーバーフロー管の排水口空間‥‥‥‥‥‥‥‥‥‥‥‥‥‥98
２・４・18 特定施設水道連結型スプリンクラー設備の設置 ························ 99
２・４・19 水道の給水管に直結する非常用貯水槽の設置‥‥‥‥‥‥‥‥‥‥‥‥‥ 100３

施工 ········································································· 101

３・１ 施工の準備と現場管理 ··················································· 101
３・１・１ 許可等の取得と許可条件の遵守 ····································· 101
３・１・２ 分岐位置及び埋設物の確認 ········································· 101
３・１・３ 現場管理 ························································· 102
３・２ 土工事 ································································· 103
３・２・１ 掘削 ····························································· 103
３・２・２ 土留め ··························································· 104
３・２・３ 埋戻し ··························································· 104
別図第31 本復旧標準断面図 ····································· 105
３・２・４ 残土処理 ························································· 112
３・２・５ 舗装の本復旧 ····················································· 112
３・２・６ 舗装の仮復旧 ····················································· 112
３・３ 給水管の分岐 ··························································· 113
３・３・１ 分岐工事を行う場合等の立ち会い及び届出 ··························· 113
３・３・２ 給水装置工事に関し技能を有する者の施工・監督 ····················· 114
３・３・３ 給水管の分岐の際の留意事項 ······································· 114
別図第32 サドル付分水栓等の外面防食 ··························· 116
３・４ 配管 ··································································· 117
３・４・１ 配管施工上の留意事項 ············································· 117
別表第22 乾燥時間 ············································· 118
別図第33 配管スリーブの設置 ··································· 118
別図第34 ポリエチレンスリーブ施工図 ··························· 118
３・４・２ 撤去工事の施工 ··················································· 120
３・５ 弁、栓、メーター及び筺等の設置 ········································· 121
３・５・１ 仕切弁、止水栓及び筺の設置 ······································· 121
別図第35 仕切弁標準図 ········································· 122
３・５・２ メーター及びメーターボックスの設置 ······························· 123
別図第36 メーターボックス蓋裏面図 ····························· 123
別図第37 メーターボックスの調整枠と底板の連結について ········· 124
３・６ 給水管等の明示 ························································· 125
３・６・１ 給水管等の明示 ··················································· 125
別図第38 埋設標識シート標準断面図 ····························· 126
別図第39 バルブ埋設表示の設置参考図 ··························· 127

４申込み等の手続と設計審査 ····················································· 128

４・１ 申込み等の手続と設計審査 ··············································· 128
４・１・１ 給水装置工事の手続 ··············································· 128
別図第40 給水装置工事の手続フロー ····························· 129
別表第22 給水装置工事台帳チェックリスト（参考） ··············· 130
４・１・２ 給水装置工事の申込み ············································· 131
４・１・３ 給水装置工事設計審査の申込み ····································· 131
４・１・４ 給水装置工事及び給水装置工事設計審査の一括申込み ················· 133
４・１・５ 設計審査 ························································· 134
４・１・６ 給水装置工事及び給水装置工事設計審査の承認 ······················· 134
４・１・７ 主任技術者の変更の届出 ··········································· 135
４・１・８ 設計変更の場合の給水装置工事設計審査の申込み ····················· 135
４・１・９ 給水装置工事の取消し ············································· 136
４・１・10 占用許可の変更及び取消し ········································· 136
４・１・11 占用許可の完了の届出 ············································· 137
４・１・12 給水装置工事の事前着工 ··········································· 137
４・１・13 口径変更の届出 ··················································· 137
４・１・14 しゅん工予定日の変更 ············································· 138
４・２ 申込みを省略できる給水装置工事 ········································· 138
４・２・１ 給水装置工事申込みを省略できる工事の範囲 ························· 138
４・２・２ 工事の設計及び完了検査等 ········································· 139
４・２・３ 工事の届出等 ····················································· 140

５検査 ········································································· 141

５・１ 管理者が行う給水装置工事の検査 ········································· 141
５・２ 検査の申込み ··························································· 142
別表第23 検査時添付書類一覧表 ······································· 143
別表第24 写真検査撮影箇所一覧表 ····································· 144
５・３ 工事事業者が行う自社検査 ··············································· 145
５・４ 管理者が行う完了検査 ··················································· 146
５・４・１ 書類検査 ························································· 146
５・４・２ 現場検査 ························································· 146
５・４・３ 写真検査 ························································· 147
５・５ 管理者が行う完了検査の合否 ············································· 148

５・６ 給水装置所有者への引き渡し ············································· 148

６

給水装置工事図の作成 ························································· 149
６・１ 図の作成 ······························································· 149
６・２ 設計図及びしゅん工図の様式等 ··········································· 150
６・３ 作図記号及び地図記号等 ················································· 151

６・４ 口径及び延長等の単位 ··················································· 152
６・５ 設計図に記載する図 ····················································· 153
６・６ 位置図の作成 ··························································· 154
６・７ 平面図の作成 ··························································· 155
６・８ その他の図の作成 ······················································· 157
６・９ 設計変更の場合の設計図の作成 ··········································· 158
６・10 部分施行の場合の設計図の作成 ··········································· 159
６・11 しゅん工図に記載する図等 ··············································· 160
６・12 立面図の作成 ··························································· 161
６・13 オフセット図の作成 ····················································· 162
６・14 立面図の省略 ··························································· 163
別表第25 設計図及びしゅん工図等の作図記号一覧表 ····················· 164７

占用許可申請図の作成 ························································· 168

７・１ 申請図書の作成 ························································· 168
７・２ 占用許可申請図の様式等 ················································· 168
７・３ 作図記号及び地図記号等 ················································· 169
７・４ 口径及び延長等の単位 ··················································· 169
７・５ 占用許可申請図に記載する図 ············································· 169
７・６ 申請概要表の作成について ··············································· 170
７・７ 位置図の作成 ··························································· 172
７・８ 平面図の作成 ··························································· 173
７・９ 横断面図の作成 ························································· 174
７・10 本復旧標準断面図の作成 ················································· 175
別表第26 占用許可申請に係る提出図書一覧表 ··························· 176

８

様式集 ······································································· 177

９

附則 ········································································· 260

10 参考資料 ····································································· 261
10・１ 条例・要綱等
10・１・１ 盛岡市水道事業給水条例
10・１・２ 盛岡市水道事業給水条例施行規程
10・１・３ 盛岡市上下水道局補助金交付規程
10・１・４ 盛岡市水道私設配水管等設置費補助金交付要綱
10・１・５ 盛岡市鉛製給水管布設替え工事費補助金交付要綱
10・１・６ 盛岡市給水装置工事資金融資要綱
10・１・７ 中高層建物直結給水技術基準
10・１・８ 盛岡市公共下水道計量装置設置及び認定等に関する要領
10・１・９ 盛岡市水道給水装置の用途の認定基準
10・２ 水道工事標準仕様書（抜粋）
10・２・１ 水道工事承認材料一覧表
10・２・２ 一体化長さ早見表
10・２・３ 標準図、構造図
10・２・４ 継手チェックシート
10・３ 給水装置工事設計図・しゅん工図の作図例
10・４ パンフレット等
10・４・１ 鉛管布設替補助パンフレット
10・４・２ 給水装置工事（窓口用）パンフレット
10・４・３ 工事資金融資パンフレット
10・４・４ 分岐工事又は撤去工事等の施工に関する現地立ち会いについて
10・５ 水理計算事例集
10・５・１ 一戸建て住宅（３階建て）の場合
10・５・２ 集合住宅（３階建て）の場合
10・５・３ 一定規模以上の給水用具を有する施設等の場合
10・５・４ 受水槽式の場合
10・５・５ 直結増圧式（集合住宅、５階建て）の場合
10・６ 水理計算様式
10・６・１ 一戸建て住宅（３階建て）の場合
10・６・２ 集合住宅（３階建て）の場合
10・６・３ 一定規模以上の給水用具を有する施設等の場合
10・６・４ 受水槽式の場合
10・６・５ 直結増圧式（集合住宅、５階建て）の場合